diff options
Diffstat (limited to 'doc/administration/geo')
16 files changed, 700 insertions, 397 deletions
diff --git a/doc/administration/geo/disaster_recovery/index.md b/doc/administration/geo/disaster_recovery/index.md index 8862776ee1b..32b3558a51f 100644 --- a/doc/administration/geo/disaster_recovery/index.md +++ b/doc/administration/geo/disaster_recovery/index.md @@ -11,11 +11,11 @@ Geo replicates your database, your Git repositories, and few other assets. We will support and replicate more data in the future, that will enable you to failover with minimal effort, in a disaster situation. -See [Geo current limitations](../index.md#current-limitations) for more information. +See [Geo limitations](../index.md#limitations) for more information. CAUTION: **Warning:** Disaster recovery for multi-secondary configurations is in **Alpha**. -For the latest updates, check the [Disaster Recovery epic for complete maturity](https://gitlab.com/groups/gitlab-org/-/epics/590). +For the latest updates, check the [Disaster Recovery epic for complete maturity](https://gitlab.com/groups/gitlab-org/-/epics/590). Multi-secondary configurations require the complete re-synchronization and re-configuration of all non-promoted secondaries and will cause downtime. @@ -84,8 +84,8 @@ must disable the **primary** node. single recommendation. You may need to: - Reconfigure the load balancers. - - Change DNS records (for example, point the primary DNS record to the **secondary** - node in order to stop usage of the **primary** node). + - Change DNS records (for example, point the primary DNS record to the + **secondary** node to stop usage of the **primary** node). - Stop the virtual servers. - Block traffic through a firewall. - Revoke object storage permissions from the **primary** node. @@ -98,16 +98,16 @@ must disable the **primary** node. Note the following when promoting a secondary: -- If replication was paused on the secondary node, for example as a part of upgrading, - while you were running a version of GitLab lower than 13.4, you _must_ - [enable the node via the database](../replication/troubleshooting.md#while-promoting-the-secondary-i-got-an-error-activerecordrecordinvalid) +- If replication was paused on the secondary node (for example as a part of + upgrading, while you were running a version of GitLab earlier than 13.4), you + _must_ [enable the node by using the database](../replication/troubleshooting.md#message-activerecordrecordinvalid-validation-failed-enabled-geo-primary-node-cannot-be-disabled) before proceeding. - A new **secondary** should not be added at this time. If you want to add a new **secondary**, do this after you have completed the entire process of promoting the **secondary** to the **primary**. - If you encounter an `ActiveRecord::RecordInvalid: Validation failed: Name has already been taken` - error during this process, please read - [the troubleshooting advice](../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-node). + error message during this process, for more information, see this + [troubleshooting advice](../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-node). #### Promoting a **secondary** node running on a single machine @@ -120,6 +120,10 @@ Note the following when promoting a secondary: 1. Edit `/etc/gitlab/gitlab.rb` to reflect its new status as **primary** by removing any lines that enabled the `geo_secondary_role`: + Users of GitLab 13.5 or later can skip this step, due to the appropriate + roles being enabled or disabled during the promotion in the following + step. + ```ruby ## In pre-11.5 documentation, the role was enabled as follows. Remove this line. geo_secondary_role['enable'] = true @@ -129,7 +133,10 @@ Note the following when promoting a secondary: ``` 1. Promote the **secondary** node to the **primary** node. - + +DANGER: **Danger:** +In GitLab 13.2 and later versions, promoting a secondary node to a primary while the secondary is paused fails. We are [investigating the issue](https://gitlab.com/gitlab-org/gitlab/-/issues/225173). Do not pause replication before promoting a secondary. If the node is paused, please resume before promoting. + To promote the secondary node to primary along with preflight checks: ```shell @@ -139,7 +146,7 @@ Note the following when promoting a secondary: If you have already run the [preflight checks](planned_failover.md#preflight-checks) separately or don't want to run them, you can skip preflight checks with: ```shell - gitlab-ctl promote-to-primary-node --skip-preflight-check + gitlab-ctl promote-to-primary-node --skip-preflight-checks ``` You can also promote the secondary node to primary **without any further confirmation**, even when preflight checks fail: @@ -159,6 +166,9 @@ conjunction with multiple servers, as it can only perform changes on a **secondary** with only a single machine. Instead, you must do this manually. +DANGER: **Danger:** +In GitLab 13.2 and later versions, promoting a secondary node to a primary while the secondary is paused fails. We are [investigating the issue](https://gitlab.com/gitlab-org/gitlab/-/issues/225173). Do not pause replication before promoting a secondary. If the node is paused, please resume before promoting. + 1. SSH in to the database node in the **secondary** and trigger PostgreSQL to promote to read-write: @@ -201,6 +211,9 @@ an external PostgreSQL database, as it can only perform changes on a **secondary node with GitLab and the database on the same machine. As a result, a manual process is required: +DANGER: **Danger:** +In GitLab 13.2 and later versions, promoting a secondary node to a primary while the secondary is paused fails. We are [investigating the issue](https://gitlab.com/gitlab-org/gitlab/-/issues/225173). Do not pause replication before promoting a secondary. If the node is paused, please resume before promoting. + 1. Promote the replica database associated with the **secondary** site. This will set the database to read-write: - Amazon RDS - [Promoting a Read Replica to Be a Standalone DB Instance](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ReadRepl.html#USER_ReadRepl.Promote) diff --git a/doc/administration/geo/disaster_recovery/planned_failover.md b/doc/administration/geo/disaster_recovery/planned_failover.md index 9b9c386652c..1238c4d8e2a 100644 --- a/doc/administration/geo/disaster_recovery/planned_failover.md +++ b/doc/administration/geo/disaster_recovery/planned_failover.md @@ -27,7 +27,7 @@ have a high degree of confidence in being able to perform them accurately. ## Not all data is automatically replicated -If you are using any GitLab features that Geo [doesn't support](../index.md#current-limitations), +If you are using any GitLab features that Geo [doesn't support](../index.md#limitations), you must make separate provisions to ensure that the **secondary** node has an up-to-date copy of any data associated with that feature. This may extend the required scheduled maintenance period significantly. diff --git a/doc/administration/geo/disaster_recovery/promotion_runbook.md b/doc/administration/geo/disaster_recovery/promotion_runbook.md index fb2353513df..7eb6ef01aee 100644 --- a/doc/administration/geo/disaster_recovery/promotion_runbook.md +++ b/doc/administration/geo/disaster_recovery/promotion_runbook.md @@ -1,269 +1,5 @@ --- -stage: Enablement -group: Geo -info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers -type: howto +redirect_to: runbooks/planned_failover_single_node.md --- -CAUTION: **Caution:** -This runbook is in **alpha**. For complete, production-ready documentation, see the -[disaster recovery documentation](index.md). - -# Disaster Recovery (Geo) promotion runbooks **(PREMIUM ONLY)** - -## Geo planned failover runbook 1 - -| Component | Configuration | -| ----------- | --------------- | -| PostgreSQL | Omnibus-managed | -| Geo site | Single-node | -| Secondaries | One | - -This runbook will guide you through a planned failover of a single-node Geo site -with one secondary. The following general architecture is assumed: - -```mermaid -graph TD - subgraph main[Geo deployment] - subgraph Primary[Primary site] - Node_1[(GitLab node)] - end - subgraph Secondary1[Secondary site] - Node_2[(GitLab node)] - end - end -``` - -This guide will result in the following: - -1. An offline primary. -1. A promoted secondary that is now the new primary. - -What is not covered: - -1. Re-adding the old **primary** as a secondary. -1. Adding a new secondary. - -### Preparation - -NOTE: **Note:** -Before following any of those steps, make sure you have `root` access to the -**secondary** to promote it, since there isn't provided an automated way to -promote a Geo replica and perform a failover. - -On the **secondary** node, navigate to the **Admin Area > Geo** dashboard to -review its status. Replicated objects (shown in green) should be close to 100%, -and there should be no failures (shown in red). If a large proportion of -objects aren't yet replicated (shown in gray), consider giving the node more -time to complete. - - - -If any objects are failing to replicate, this should be investigated before -scheduling the maintenance window. After a planned failover, anything that -failed to replicate will be **lost**. - -You can use the -[Geo status API](../../../api/geo_nodes.md#retrieve-project-sync-or-verification-failures-that-occurred-on-the-current-node) -to review failed objects and the reasons for failure. -A common cause of replication failures is the data being missing on the -**primary** node - you can resolve these failures by restoring the data from backup, -or removing references to the missing data. - -The maintenance window won't end until Geo replication and verification is -completely finished. To keep the window as short as possible, you should -ensure these processes are close to 100% as possible during active use. - -If the **secondary** node is still replicating data from the **primary** node, -follow these steps to avoid unnecessary data loss: - -1. Until a [read-only mode](https://gitlab.com/gitlab-org/gitlab/-/issues/14609) - is implemented, updates must be prevented from happening manually to the - **primary**. Note that your **secondary** node still needs read-only - access to the **primary** node during the maintenance window: - - 1. At the scheduled time, using your cloud provider or your node's firewall, block - all HTTP, HTTPS and SSH traffic to/from the **primary** node, **except** for your IP and - the **secondary** node's IP. - - For instance, you can run the following commands on the **primary** node: - - ```shell - sudo iptables -A INPUT -p tcp -s <secondary_node_ip> --destination-port 22 -j ACCEPT - sudo iptables -A INPUT -p tcp -s <your_ip> --destination-port 22 -j ACCEPT - sudo iptables -A INPUT --destination-port 22 -j REJECT - - sudo iptables -A INPUT -p tcp -s <secondary_node_ip> --destination-port 80 -j ACCEPT - sudo iptables -A INPUT -p tcp -s <your_ip> --destination-port 80 -j ACCEPT - sudo iptables -A INPUT --tcp-dport 80 -j REJECT - - sudo iptables -A INPUT -p tcp -s <secondary_node_ip> --destination-port 443 -j ACCEPT - sudo iptables -A INPUT -p tcp -s <your_ip> --destination-port 443 -j ACCEPT - sudo iptables -A INPUT --tcp-dport 443 -j REJECT - ``` - - From this point, users will be unable to view their data or make changes on the - **primary** node. They will also be unable to log in to the **secondary** node. - However, existing sessions will work for the remainder of the maintenance period, and - public data will be accessible throughout. - - 1. Verify the **primary** node is blocked to HTTP traffic by visiting it in browser via - another IP. The server should refuse connection. - - 1. Verify the **primary** node is blocked to Git over SSH traffic by attempting to pull an - existing Git repository with an SSH remote URL. The server should refuse - connection. - - 1. On the **primary** node, disable non-Geo periodic background jobs by navigating - to **Admin Area > Monitoring > Background Jobs > Cron**, clicking `Disable All`, - and then clicking `Enable` for the `geo_sidekiq_cron_config_worker` cron job. - This job will re-enable several other cron jobs that are essential for planned - failover to complete successfully. - -1. Finish replicating and verifying all data: - - CAUTION: **Caution:** - Not all data is automatically replicated. Read more about - [what is excluded](planned_failover.md#not-all-data-is-automatically-replicated). - - 1. If you are manually replicating any - [data not managed by Geo](../replication/datatypes.md#limitations-on-replicationverification), - trigger the final replication process now. - 1. On the **primary** node, navigate to **Admin Area > Monitoring > Background Jobs > Queues** - and wait for all queues except those with `geo` in the name to drop to 0. - These queues contain work that has been submitted by your users; failing over - before it is completed will cause the work to be lost. - 1. On the **primary** node, navigate to **Admin Area > Geo** and wait for the - following conditions to be true of the **secondary** node you are failing over to: - - All replication meters to each 100% replicated, 0% failures. - - All verification meters reach 100% verified, 0% failures. - - Database replication lag is 0ms. - - The Geo log cursor is up to date (0 events behind). - - 1. On the **secondary** node, navigate to **Admin Area > Monitoring > Background Jobs > Queues** - and wait for all the `geo` queues to drop to 0 queued and 0 running jobs. - 1. On the **secondary** node, use [these instructions](../../raketasks/check.md) - to verify the integrity of CI artifacts, LFS objects, and uploads in file - storage. - - At this point, your **secondary** node will contain an up-to-date copy of everything the - **primary** node has, meaning nothing will be lost when you fail over. - -1. In this final step, you need to permanently disable the **primary** node. - - CAUTION: **Caution:** - When the **primary** node goes offline, there may be data saved on the **primary** node - that has not been replicated to the **secondary** node. This data should be treated - as lost if you proceed. - - TIP: **Tip:** - If you plan to [update the **primary** domain DNS record](index.md#step-4-optional-updating-the-primary-domain-dns-record), - you may wish to lower the TTL now to speed up propagation. - - When performing a failover, we want to avoid a split-brain situation where - writes can occur in two different GitLab instances. So to prepare for the - failover, you must disable the **primary** node: - - - If you have SSH access to the **primary** node, stop and disable GitLab: - - ```shell - sudo gitlab-ctl stop - ``` - - Prevent GitLab from starting up again if the server unexpectedly reboots: - - ```shell - sudo systemctl disable gitlab-runsvdir - ``` - - NOTE: **Note:** - (**CentOS only**) In CentOS 6 or older, there is no easy way to prevent GitLab from being - started if the machine reboots isn't available (see [Omnibus GitLab issue #3058](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/3058)). - It may be safest to uninstall the GitLab package completely with `sudo yum remove gitlab-ee`. - - NOTE: **Note:** - (**Ubuntu 14.04 LTS**) If you are using an older version of Ubuntu - or any other distribution based on the Upstart init system, you can prevent GitLab - from starting if the machine reboots as `root` with - `initctl stop gitlab-runsvvdir && echo 'manual' > /etc/init/gitlab-runsvdir.override && initctl reload-configuration`. - - - If you do not have SSH access to the **primary** node, take the machine offline and - prevent it from rebooting. Since there are many ways you may prefer to accomplish - this, we will avoid a single recommendation. You may need to: - - - Reconfigure the load balancers. - - Change DNS records (for example, point the **primary** DNS record to the **secondary** - node in order to stop usage of the **primary** node). - - Stop the virtual servers. - - Block traffic through a firewall. - - Revoke object storage permissions from the **primary** node. - - Physically disconnect a machine. - -### Promoting the **secondary** node - -Note the following when promoting a secondary: - -- A new **secondary** should not be added at this time. If you want to add a new - **secondary**, do this after you have completed the entire process of promoting - the **secondary** to the **primary**. -- If you encounter an `ActiveRecord::RecordInvalid: Validation failed: Name has already been taken` - error during this process, read - [the troubleshooting advice](../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-node). - -To promote the secondary node: - -1. SSH in to your **secondary** node and login as root: - - ```shell - sudo -i - ``` - -1. Edit `/etc/gitlab/gitlab.rb` to reflect its new status as **primary** by - removing any lines that enabled the `geo_secondary_role`: - - ```ruby - ## In pre-11.5 documentation, the role was enabled as follows. Remove this line. - geo_secondary_role['enable'] = true - - ## In 11.5+ documentation, the role was enabled as follows. Remove this line. - roles ['geo_secondary_role'] - ``` - -1. Run the following command to list out all preflight checks and automatically - check if replication and verification are complete before scheduling a planned - failover to ensure the process will go smoothly: - - ```shell - gitlab-ctl promotion-preflight-checks - ``` - -1. Promote the **secondary**: - - ```shell - gitlab-ctl promote-to-primary-node - ``` - - If you have already run the [preflight checks](planned_failover.md#preflight-checks) - or don't want to run them, you can skip them: - - ```shell - gitlab-ctl promote-to-primary-node --skip-preflight-check - ``` - - You can also promote the secondary node to primary **without any further confirmation**, even when preflight checks fail: - - ```shell - sudo gitlab-ctl promote-to-primary-node --force - ``` - -1. Verify you can connect to the newly promoted **primary** node using the URL used - previously for the **secondary** node. - - If successful, the **secondary** node has now been promoted to the **primary** node. - -### Next steps - -To regain geographic redundancy as quickly as possible, you should -[add a new **secondary** node](../setup/index.md). To -do that, you can re-add the old **primary** as a new secondary and bring it back -online. +This document was moved to [another location](runbooks/planned_failover_single_node.md). diff --git a/doc/administration/geo/disaster_recovery/runbooks/planned_failover_multi_node.md b/doc/administration/geo/disaster_recovery/runbooks/planned_failover_multi_node.md new file mode 100644 index 00000000000..1e3bac0b354 --- /dev/null +++ b/doc/administration/geo/disaster_recovery/runbooks/planned_failover_multi_node.md @@ -0,0 +1,274 @@ +--- +stage: Enablement +group: Geo +info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers +type: howto +--- + +CAUTION: **Caution:** +This runbook is in **alpha**. For complete, production-ready documentation, see the +[disaster recovery documentation](../index.md). + +# Disaster Recovery (Geo) promotion runbooks **(PREMIUM ONLY)** + +## Geo planned failover for a multi-node configuration + +| Component | Configuration | +|-------------|-----------------| +| PostgreSQL | Omnibus-managed | +| Geo site | Multi-node | +| Secondaries | One | + +This runbook will guide you through a planned failover of a multi-node Geo site +with one secondary. The following [2000 user reference architecture](../../../../administration/reference_architectures/2k_users.md) is assumed: + +```mermaid +graph TD + subgraph main[Geo deployment] + subgraph Primary[Primary site, multi-node] + Node_1[Rails node 1] + Node_2[Rails node 2] + Node_3[PostgreSQL node] + Node_4[Gitaly node] + Node_5[Redis node] + Node_6[Monitoring node] + end + subgraph Secondary[Secondary site, multi-node] + Node_7[Rails node 1] + Node_8[Rails node 2] + Node_9[PostgreSQL node] + Node_10[Gitaly node] + Node_11[Redis node] + Node_12[Monitoring node] + end + end +``` + +The load balancer node and optional NFS server are omitted for clarity. + +This guide will result in the following: + +1. An offline primary. +1. A promoted secondary that is now the new primary. + +What is not covered: + +1. Re-adding the old **primary** as a secondary. +1. Adding a new secondary. + +### Preparation + +NOTE: **Note:** +Before following any of those steps, make sure you have `root` access to the +**secondary** to promote it, since there isn't provided an automated way to +promote a Geo replica and perform a failover. + +On the **secondary** node, navigate to the **Admin Area > Geo** dashboard to +review its status. Replicated objects (shown in green) should be close to 100%, +and there should be no failures (shown in red). If a large proportion of +objects aren't yet replicated (shown in gray), consider giving the node more +time to complete. + + + +If any objects are failing to replicate, this should be investigated before +scheduling the maintenance window. After a planned failover, anything that +failed to replicate will be **lost**. + +You can use the +[Geo status API](../../../../api/geo_nodes.md#retrieve-project-sync-or-verification-failures-that-occurred-on-the-current-node) +to review failed objects and the reasons for failure. +A common cause of replication failures is the data being missing on the +**primary** node - you can resolve these failures by restoring the data from backup, +or removing references to the missing data. + +The maintenance window won't end until Geo replication and verification is +completely finished. To keep the window as short as possible, you should +ensure these processes are close to 100% as possible during active use. + +If the **secondary** node is still replicating data from the **primary** node, +follow these steps to avoid unnecessary data loss: + +1. Until a [read-only mode](https://gitlab.com/gitlab-org/gitlab/-/issues/14609) + is implemented, updates must be prevented from happening manually to the + **primary**. Note that your **secondary** node still needs read-only + access to the **primary** node during the maintenance window: + + 1. At the scheduled time, using your cloud provider or your node's firewall, block + all HTTP, HTTPS and SSH traffic to/from the **primary** node, **except** for your IP and + the **secondary** node's IP. + + For instance, you can run the following commands on the **primary** node: + + ```shell + sudo iptables -A INPUT -p tcp -s <secondary_node_ip> --destination-port 22 -j ACCEPT + sudo iptables -A INPUT -p tcp -s <your_ip> --destination-port 22 -j ACCEPT + sudo iptables -A INPUT --destination-port 22 -j REJECT + + sudo iptables -A INPUT -p tcp -s <secondary_node_ip> --destination-port 80 -j ACCEPT + sudo iptables -A INPUT -p tcp -s <your_ip> --destination-port 80 -j ACCEPT + sudo iptables -A INPUT --tcp-dport 80 -j REJECT + + sudo iptables -A INPUT -p tcp -s <secondary_node_ip> --destination-port 443 -j ACCEPT + sudo iptables -A INPUT -p tcp -s <your_ip> --destination-port 443 -j ACCEPT + sudo iptables -A INPUT --tcp-dport 443 -j REJECT + ``` + + From this point, users will be unable to view their data or make changes on the + **primary** node. They will also be unable to log in to the **secondary** node. + However, existing sessions will work for the remainder of the maintenance period, and + public data will be accessible throughout. + + 1. Verify the **primary** node is blocked to HTTP traffic by visiting it in browser via + another IP. The server should refuse connection. + + 1. Verify the **primary** node is blocked to Git over SSH traffic by attempting to pull an + existing Git repository with an SSH remote URL. The server should refuse + connection. + + 1. On the **primary** node, disable non-Geo periodic background jobs by navigating + to **Admin Area > Monitoring > Background Jobs > Cron**, clicking `Disable All`, + and then clicking `Enable` for the `geo_sidekiq_cron_config_worker` cron job. + This job will re-enable several other cron jobs that are essential for planned + failover to complete successfully. + +1. Finish replicating and verifying all data: + + CAUTION: **Caution:** + Not all data is automatically replicated. Read more about + [what is excluded](../planned_failover.md#not-all-data-is-automatically-replicated). + + 1. If you are manually replicating any + [data not managed by Geo](../../replication/datatypes.md#limitations-on-replicationverification), + trigger the final replication process now. + 1. On the **primary** node, navigate to **Admin Area > Monitoring > Background Jobs > Queues** + and wait for all queues except those with `geo` in the name to drop to 0. + These queues contain work that has been submitted by your users; failing over + before it is completed will cause the work to be lost. + 1. On the **primary** node, navigate to **Admin Area > Geo** and wait for the + following conditions to be true of the **secondary** node you are failing over to: + - All replication meters to each 100% replicated, 0% failures. + - All verification meters reach 100% verified, 0% failures. + - Database replication lag is 0ms. + - The Geo log cursor is up to date (0 events behind). + + 1. On the **secondary** node, navigate to **Admin Area > Monitoring > Background Jobs > Queues** + and wait for all the `geo` queues to drop to 0 queued and 0 running jobs. + 1. On the **secondary** node, use [these instructions](../../../raketasks/check.md) + to verify the integrity of CI artifacts, LFS objects, and uploads in file + storage. + + At this point, your **secondary** node will contain an up-to-date copy of everything the + **primary** node has, meaning nothing will be lost when you fail over. + +1. In this final step, you need to permanently disable the **primary** node. + + CAUTION: **Caution:** + When the **primary** node goes offline, there may be data saved on the **primary** node + that has not been replicated to the **secondary** node. This data should be treated + as lost if you proceed. + + TIP: **Tip:** + If you plan to [update the **primary** domain DNS record](../index.md#step-4-optional-updating-the-primary-domain-dns-record), + you may wish to lower the TTL now to speed up propagation. + + When performing a failover, we want to avoid a split-brain situation where + writes can occur in two different GitLab instances. So to prepare for the + failover, you must disable the **primary** node: + + - If you have SSH access to the **primary** node, stop and disable GitLab: + + ```shell + sudo gitlab-ctl stop + ``` + + Prevent GitLab from starting up again if the server unexpectedly reboots: + + ```shell + sudo systemctl disable gitlab-runsvdir + ``` + + NOTE: **Note:** + (**CentOS only**) In CentOS 6 or older, there is no easy way to prevent GitLab from being + started if the machine reboots isn't available (see [Omnibus GitLab issue #3058](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/3058)). + It may be safest to uninstall the GitLab package completely with `sudo yum remove gitlab-ee`. + + NOTE: **Note:** + (**Ubuntu 14.04 LTS**) If you are using an older version of Ubuntu + or any other distribution based on the Upstart init system, you can prevent GitLab + from starting if the machine reboots as `root` with + `initctl stop gitlab-runsvvdir && echo 'manual' > /etc/init/gitlab-runsvdir.override && initctl reload-configuration`. + + - If you do not have SSH access to the **primary** node, take the machine offline and + prevent it from rebooting. Since there are many ways you may prefer to accomplish + this, we will avoid a single recommendation. You may need to: + + - Reconfigure the load balancers. + - Change DNS records (for example, point the **primary** DNS record to the + **secondary** node to stop using the **primary** node). + - Stop the virtual servers. + - Block traffic through a firewall. + - Revoke object storage permissions from the **primary** node. + - Physically disconnect a machine. + +### Promoting the **secondary** node + +NOTE: **Note:** +A new **secondary** should not be added at this time. If you want to add a new +**secondary**, do this after you have completed the entire process of promoting +the **secondary** to the **primary**. + +CAUTION: **Caution:** +If you encounter an `ActiveRecord::RecordInvalid: Validation failed: Name has already been taken` error during this process, read +[the troubleshooting advice](../../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-node). + +The `gitlab-ctl promote-to-primary-node` command cannot be used yet in +conjunction with multiple servers, as it can only +perform changes on a **secondary** with only a single machine. Instead, you must +do this manually. + +DANGER: **Danger:** +In GitLab 13.2 and later versions, promoting a secondary node to a primary while the secondary is paused fails. We are [investigating the issue](https://gitlab.com/gitlab-org/gitlab/-/issues/225173). Do not pause replication before promoting a secondary. If the node is paused, please resume before promoting. + +1. SSH in to the PostgreSQL node in the **secondary** and trigger PostgreSQL to + promote to read-write: + + ```shell + sudo gitlab-pg-ctl promote + ``` + + In GitLab 12.8 and earlier, see [Message: `sudo: gitlab-pg-ctl: command not found`](../../replication/troubleshooting.md#message-sudo-gitlab-pg-ctl-command-not-found). + +1. Edit `/etc/gitlab/gitlab.rb` on every machine in the **secondary** to + reflect its new status as **primary** by removing any lines that enabled the + `geo_secondary_role`: + + ```ruby + ## In pre-11.5 documentation, the role was enabled as follows. Remove this line. + geo_secondary_role['enable'] = true + + ## In 11.5+ documentation, the role was enabled as follows. Remove this line. + roles ['geo_secondary_role'] + ``` + + After making these changes [Reconfigure GitLab](../../../restart_gitlab.md#omnibus-gitlab-reconfigure) each + machine so the changes take effect. + +1. Promote the **secondary** to **primary**. SSH into a single Rails node + server and execute: + + ```shell + sudo gitlab-rake geo:set_secondary_as_primary + ``` + +1. Verify you can connect to the newly promoted **primary** using the URL used + previously for the **secondary**. + +1. Success! The **secondary** has now been promoted to **primary**. + +### Next steps + +To regain geographic redundancy as quickly as possible, you should +[add a new **secondary** node](../../setup/index.md). To +do that, you can re-add the old **primary** as a new secondary and bring it back +online. diff --git a/doc/administration/geo/disaster_recovery/runbooks/planned_failover_single_node.md b/doc/administration/geo/disaster_recovery/runbooks/planned_failover_single_node.md new file mode 100644 index 00000000000..5e847030077 --- /dev/null +++ b/doc/administration/geo/disaster_recovery/runbooks/planned_failover_single_node.md @@ -0,0 +1,269 @@ +--- +stage: Enablement +group: Geo +info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers +type: howto +--- + +CAUTION: **Caution:** +This runbook is in **alpha**. For complete, production-ready documentation, see the +[disaster recovery documentation](../index.md). + +# Disaster Recovery (Geo) promotion runbooks **(PREMIUM ONLY)** + +## Geo planned failover for a single-node configuration + +| Component | Configuration | +|-------------|-----------------| +| PostgreSQL | Omnibus-managed | +| Geo site | Single-node | +| Secondaries | One | + +This runbook will guide you through a planned failover of a single-node Geo site +with one secondary. The following general architecture is assumed: + +```mermaid +graph TD + subgraph main[Geo deployment] + subgraph Primary[Primary site] + Node_1[(GitLab node)] + end + subgraph Secondary1[Secondary site] + Node_2[(GitLab node)] + end + end +``` + +This guide will result in the following: + +1. An offline primary. +1. A promoted secondary that is now the new primary. + +What is not covered: + +1. Re-adding the old **primary** as a secondary. +1. Adding a new secondary. + +### Preparation + +NOTE: **Note:** +Before following any of those steps, make sure you have `root` access to the +**secondary** to promote it, since there isn't provided an automated way to +promote a Geo replica and perform a failover. + +On the **secondary** node, navigate to the **Admin Area > Geo** dashboard to +review its status. Replicated objects (shown in green) should be close to 100%, +and there should be no failures (shown in red). If a large proportion of +objects aren't yet replicated (shown in gray), consider giving the node more +time to complete. + + + +If any objects are failing to replicate, this should be investigated before +scheduling the maintenance window. After a planned failover, anything that +failed to replicate will be **lost**. + +You can use the +[Geo status API](../../../../api/geo_nodes.md#retrieve-project-sync-or-verification-failures-that-occurred-on-the-current-node) +to review failed objects and the reasons for failure. +A common cause of replication failures is the data being missing on the +**primary** node - you can resolve these failures by restoring the data from backup, +or removing references to the missing data. + +The maintenance window won't end until Geo replication and verification is +completely finished. To keep the window as short as possible, you should +ensure these processes are close to 100% as possible during active use. + +If the **secondary** node is still replicating data from the **primary** node, +follow these steps to avoid unnecessary data loss: + +1. Until a [read-only mode](https://gitlab.com/gitlab-org/gitlab/-/issues/14609) + is implemented, updates must be prevented from happening manually to the + **primary**. Note that your **secondary** node still needs read-only + access to the **primary** node during the maintenance window: + + 1. At the scheduled time, using your cloud provider or your node's firewall, block + all HTTP, HTTPS and SSH traffic to/from the **primary** node, **except** for your IP and + the **secondary** node's IP. + + For instance, you can run the following commands on the **primary** node: + + ```shell + sudo iptables -A INPUT -p tcp -s <secondary_node_ip> --destination-port 22 -j ACCEPT + sudo iptables -A INPUT -p tcp -s <your_ip> --destination-port 22 -j ACCEPT + sudo iptables -A INPUT --destination-port 22 -j REJECT + + sudo iptables -A INPUT -p tcp -s <secondary_node_ip> --destination-port 80 -j ACCEPT + sudo iptables -A INPUT -p tcp -s <your_ip> --destination-port 80 -j ACCEPT + sudo iptables -A INPUT --tcp-dport 80 -j REJECT + + sudo iptables -A INPUT -p tcp -s <secondary_node_ip> --destination-port 443 -j ACCEPT + sudo iptables -A INPUT -p tcp -s <your_ip> --destination-port 443 -j ACCEPT + sudo iptables -A INPUT --tcp-dport 443 -j REJECT + ``` + + From this point, users will be unable to view their data or make changes on the + **primary** node. They will also be unable to log in to the **secondary** node. + However, existing sessions will work for the remainder of the maintenance period, and + public data will be accessible throughout. + + 1. Verify the **primary** node is blocked to HTTP traffic by visiting it in browser via + another IP. The server should refuse connection. + + 1. Verify the **primary** node is blocked to Git over SSH traffic by attempting to pull an + existing Git repository with an SSH remote URL. The server should refuse + connection. + + 1. On the **primary** node, disable non-Geo periodic background jobs by navigating + to **Admin Area > Monitoring > Background Jobs > Cron**, clicking `Disable All`, + and then clicking `Enable` for the `geo_sidekiq_cron_config_worker` cron job. + This job will re-enable several other cron jobs that are essential for planned + failover to complete successfully. + +1. Finish replicating and verifying all data: + + CAUTION: **Caution:** + Not all data is automatically replicated. Read more about + [what is excluded](../planned_failover.md#not-all-data-is-automatically-replicated). + + 1. If you are manually replicating any + [data not managed by Geo](../../replication/datatypes.md#limitations-on-replicationverification), + trigger the final replication process now. + 1. On the **primary** node, navigate to **Admin Area > Monitoring > Background Jobs > Queues** + and wait for all queues except those with `geo` in the name to drop to 0. + These queues contain work that has been submitted by your users; failing over + before it is completed will cause the work to be lost. + 1. On the **primary** node, navigate to **Admin Area > Geo** and wait for the + following conditions to be true of the **secondary** node you are failing over to: + - All replication meters to each 100% replicated, 0% failures. + - All verification meters reach 100% verified, 0% failures. + - Database replication lag is 0ms. + - The Geo log cursor is up to date (0 events behind). + + 1. On the **secondary** node, navigate to **Admin Area > Monitoring > Background Jobs > Queues** + and wait for all the `geo` queues to drop to 0 queued and 0 running jobs. + 1. On the **secondary** node, use [these instructions](../../../raketasks/check.md) + to verify the integrity of CI artifacts, LFS objects, and uploads in file + storage. + + At this point, your **secondary** node will contain an up-to-date copy of everything the + **primary** node has, meaning nothing will be lost when you fail over. + +1. In this final step, you need to permanently disable the **primary** node. + + CAUTION: **Caution:** + When the **primary** node goes offline, there may be data saved on the **primary** node + that has not been replicated to the **secondary** node. This data should be treated + as lost if you proceed. + + TIP: **Tip:** + If you plan to [update the **primary** domain DNS record](../index.md#step-4-optional-updating-the-primary-domain-dns-record), + you may wish to lower the TTL now to speed up propagation. + + When performing a failover, we want to avoid a split-brain situation where + writes can occur in two different GitLab instances. So to prepare for the + failover, you must disable the **primary** node: + + - If you have SSH access to the **primary** node, stop and disable GitLab: + + ```shell + sudo gitlab-ctl stop + ``` + + Prevent GitLab from starting up again if the server unexpectedly reboots: + + ```shell + sudo systemctl disable gitlab-runsvdir + ``` + + NOTE: **Note:** + (**CentOS only**) In CentOS 6 or older, there is no easy way to prevent GitLab from being + started if the machine reboots isn't available (see [Omnibus GitLab issue #3058](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/3058)). + It may be safest to uninstall the GitLab package completely with `sudo yum remove gitlab-ee`. + + NOTE: **Note:** + (**Ubuntu 14.04 LTS**) If you are using an older version of Ubuntu + or any other distribution based on the Upstart init system, you can prevent GitLab + from starting if the machine reboots as `root` with + `initctl stop gitlab-runsvvdir && echo 'manual' > /etc/init/gitlab-runsvdir.override && initctl reload-configuration`. + + - If you do not have SSH access to the **primary** node, take the machine offline and + prevent it from rebooting. Since there are many ways you may prefer to accomplish + this, we will avoid a single recommendation. You may need to: + + - Reconfigure the load balancers. + - Change DNS records (for example, point the **primary** DNS record to the + **secondary** node to stop using the **primary** node). + - Stop the virtual servers. + - Block traffic through a firewall. + - Revoke object storage permissions from the **primary** node. + - Physically disconnect a machine. + +### Promoting the **secondary** node + +Note the following when promoting a secondary: + +- A new **secondary** should not be added at this time. If you want to add a new + **secondary**, do this after you have completed the entire process of promoting + the **secondary** to the **primary**. +- If you encounter an `ActiveRecord::RecordInvalid: Validation failed: Name has already been taken` + error during this process, read + [the troubleshooting advice](../../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-node). + +To promote the secondary node: + +1. SSH in to your **secondary** node and login as root: + + ```shell + sudo -i + ``` + +1. Edit `/etc/gitlab/gitlab.rb` to reflect its new status as **primary** by + removing any lines that enabled the `geo_secondary_role`: + + ```ruby + ## In pre-11.5 documentation, the role was enabled as follows. Remove this line. + geo_secondary_role['enable'] = true + + ## In 11.5+ documentation, the role was enabled as follows. Remove this line. + roles ['geo_secondary_role'] + ``` + +1. Run the following command to list out all preflight checks and automatically + check if replication and verification are complete before scheduling a planned + failover to ensure the process will go smoothly: + + ```shell + gitlab-ctl promotion-preflight-checks + ``` + +1. Promote the **secondary**: + + ```shell + gitlab-ctl promote-to-primary-node + ``` + + If you have already run the [preflight checks](../planned_failover.md#preflight-checks) + or don't want to run them, you can skip them: + + ```shell + gitlab-ctl promote-to-primary-node --skip-preflight-check + ``` + + You can also promote the secondary node to primary **without any further confirmation**, even when preflight checks fail: + + ```shell + sudo gitlab-ctl promote-to-primary-node --force + ``` + +1. Verify you can connect to the newly promoted **primary** node using the URL used + previously for the **secondary** node. + + If successful, the **secondary** node has now been promoted to the **primary** node. + +### Next steps + +To regain geographic redundancy as quickly as possible, you should +[add a new **secondary** node](../../setup/index.md). To +do that, you can re-add the old **primary** as a new secondary and bring it back +online. diff --git a/doc/administration/geo/index.md b/doc/administration/geo/index.md index 6fdf213ac78..8767940816b 100644 --- a/doc/administration/geo/index.md +++ b/doc/administration/geo/index.md @@ -39,7 +39,7 @@ Implementing Geo provides the following benefits: In addition, it: -- Can be used for cloning and fetching projects, in addition to reading any data available in the GitLab web interface (see [current limitations](#current-limitations)). +- Can be used for cloning and fetching projects, in addition to reading any data available in the GitLab web interface (see [limitations](#limitations)). - Overcomes slow connections between distant offices, saving time by improving speed for distributed teams. - Helps reducing the loading time for automated tasks, custom integrations, and internal workflows. - Can quickly fail over to a **secondary** node in a [disaster recovery](disaster_recovery/index.md) scenario. @@ -67,9 +67,9 @@ Keep in mind that: - **Secondary** nodes talk to the **primary** node to: - Get user data for logins (API). - Replicate repositories, LFS Objects, and Attachments (HTTPS + JWT). -- Since GitLab Premium 10.0, the **primary** node no longer talks to **secondary** nodes to notify for changes (API). +- In GitLab Premium 10.0 and later, the **primary** node no longer talks to **secondary** nodes to notify for changes (API). - Pushing directly to a **secondary** node (for both HTTP and SSH, including Git LFS) was [introduced](https://about.gitlab.com/releases/2018/09/22/gitlab-11-3-released/) in [GitLab Premium](https://about.gitlab.com/pricing/#self-managed) 11.3. -- There are [limitations](#current-limitations) in the current implementation. +- There are [limitations](#limitations) when using Geo. ### Architecture @@ -195,6 +195,9 @@ For information on how to update your Geo nodes to the latest GitLab version, se > [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/35913) in [GitLab Premium](https://about.gitlab.com/pricing/) 13.2. +DANGER: **Danger:** +In GitLab 13.2 and later versions, promoting a secondary node to a primary while the secondary is paused fails. We are [investigating the issue](https://gitlab.com/gitlab-org/gitlab/-/issues/225173). Do not pause replication before promoting a secondary. If the node is paused, please resume before promoting. + In some circumstances, like during [upgrades](replication/updating_the_geo_nodes.md) or a [planned failover](disaster_recovery/planned_failover.md), it is desirable to pause replication between the primary and secondary. Pausing and resuming replication is done via a command line tool from the secondary node. @@ -247,7 +250,7 @@ For more information on removing a Geo node, see [Removing **secondary** Geo nod To find out how to disable Geo, see [Disabling Geo](replication/disable_geo.md). -## Current limitations +## Limitations CAUTION: **Caution:** This list of limitations only reflects the latest version of GitLab. If you are using an older version, extra limitations may be in place. @@ -261,6 +264,7 @@ This list of limitations only reflects the latest version of GitLab. If you are - Object pools for forked project deduplication work only on the **primary** node, and are duplicated on the **secondary** node. - [External merge request diffs](../merge_request_diffs.md) will not be replicated if they are on-disk, and viewing merge requests will fail. However, external MR diffs in object storage **are** supported. The default configuration (in-database) does work. - GitLab Runners cannot register with a **secondary** node. Support for this is [planned for the future](https://gitlab.com/gitlab-org/gitlab/-/issues/3294). +- Geo **secondary** nodes can not be configured to [use high-availability configurations of PostgreSQL](https://gitlab.com/groups/gitlab-org/-/epics/2536). ### Limitations on replication/verification @@ -278,7 +282,7 @@ For answers to common questions, see the [Geo FAQ](replication/faq.md). ## Log files -Since GitLab 9.5, Geo stores structured log messages in a `geo.log` file. For Omnibus installations, this file is at `/var/log/gitlab/gitlab-rails/geo.log`. +In GitLab 9.5 and later, Geo stores structured log messages in a `geo.log` file. For Omnibus installations, this file is at `/var/log/gitlab/gitlab-rails/geo.log`. This file contains information about when Geo attempts to sync repositories and files. Each line in the file contains a separate JSON entry that can be ingested into. For example, Elasticsearch or Splunk. diff --git a/doc/administration/geo/replication/datatypes.md b/doc/administration/geo/replication/datatypes.md index 166a724f9c1..d1fa2d503be 100644 --- a/doc/administration/geo/replication/datatypes.md +++ b/doc/administration/geo/replication/datatypes.md @@ -23,30 +23,34 @@ We currently distinguish between three different data types: See the list below of each feature or component we replicate, its corresponding data type, replication, and verification methods: -| Type | Feature / component | Replication method | Verification method | -|:---------|:----------------------------------------------|:--------------------------------------|:-----------------------| -| Database | Application data in PostgreSQL | Native | Native | -| Database | Redis | _N/A_ (*1*) | _N/A_ | -| Database | Elasticsearch | Native | Native | -| Database | Personal snippets | PostgreSQL Replication | PostgreSQL Replication | -| Database | Project snippets | PostgreSQL Replication | PostgreSQL Replication | -| Database | SSH public keys | PostgreSQL Replication | PostgreSQL Replication | -| Git | Project repository | Geo with Gitaly | Gitaly Checksum | -| Git | Project wiki repository | Geo with Gitaly | Gitaly Checksum | -| Git | Project designs repository | Geo with Gitaly | Gitaly Checksum | -| Git | Object pools for forked project deduplication | Geo with Gitaly | _Not implemented_ | -| Blobs | User uploads _(filesystem)_ | Geo with API | _Not implemented_ | -| Blobs | User uploads _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | -| Blobs | LFS objects _(filesystem)_ | Geo with API | _Not implemented_ | -| Blobs | LFS objects _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | -| Blobs | CI job artifacts _(filesystem)_ | Geo with API | _Not implemented_ | -| Blobs | CI job artifacts _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | -| Blobs | Archived CI build traces _(filesystem)_ | Geo with API | _Not implemented_ | -| Blobs | Archived CI build traces _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | -| Blobs | Container registry _(filesystem)_ | Geo with API/Docker API | _Not implemented_ | -| Blobs | Container registry _(object storage)_ | Geo with API/Managed/Docker API (*2*) | _Not implemented_ | -| Blobs | Package registry _(filesystem)_ | Geo with API | _Not implemented_ | -| Blobs | Package registry _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | +| Type | Feature / component | Replication method | Verification method | +|:---------|:------------------------------------------------|:--------------------------------------|:-----------------------| +| Database | Application data in PostgreSQL | Native | Native | +| Database | Redis | _N/A_ (*1*) | _N/A_ | +| Database | Elasticsearch | Native | Native | +| Database | Personal snippets | PostgreSQL Replication | PostgreSQL Replication | +| Database | Project snippets | PostgreSQL Replication | PostgreSQL Replication | +| Database | SSH public keys | PostgreSQL Replication | PostgreSQL Replication | +| Git | Project repository | Geo with Gitaly | Gitaly Checksum | +| Git | Project wiki repository | Geo with Gitaly | Gitaly Checksum | +| Git | Project designs repository | Geo with Gitaly | Gitaly Checksum | +| Git | Object pools for forked project deduplication | Geo with Gitaly | _Not implemented_ | +| Blobs | User uploads _(filesystem)_ | Geo with API | _Not implemented_ | +| Blobs | User uploads _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | +| Blobs | LFS objects _(filesystem)_ | Geo with API | _Not implemented_ | +| Blobs | LFS objects _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | +| Blobs | CI job artifacts _(filesystem)_ | Geo with API | _Not implemented_ | +| Blobs | CI job artifacts _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | +| Blobs | Archived CI build traces _(filesystem)_ | Geo with API | _Not implemented_ | +| Blobs | Archived CI build traces _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | +| Blobs | Container registry _(filesystem)_ | Geo with API/Docker API | _Not implemented_ | +| Blobs | Container registry _(object storage)_ | Geo with API/Managed/Docker API (*2*) | _Not implemented_ | +| Blobs | Package registry _(filesystem)_ | Geo with API | _Not implemented_ | +| Blobs | Package registry _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | +| Blobs | Versioned Terraform State _(filesystem)_ | Geo with API | _Not implemented_ | +| Blobs | Versioned Terraform State _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | +| Blobs | External Merge Request Diffs _(filesystem)_ | Geo with API | _Not implemented_ | +| Blobs | External Merge Request Diffs _(object storage)_ | Geo with API/Managed (*2*) | _Not implemented_ | - (*1*): Redis replication can be used as part of HA with Redis sentinel. It's not used between Geo nodes. - (*2*): Object storage replication can be performed by Geo or by your object storage provider/appliance @@ -160,39 +164,34 @@ replicating data from those features will cause the data to be **lost**. If you wish to use those features on a **secondary** node, or to execute a failover successfully, you must replicate their data using some other means. -| Feature | Replicated (added in GitLab version) | Verified (added in GitLab version) | Notes | -|:------------------------------------------------------------------------------------------------------|:-------------------------------------------------------------|:----------------------------------------------------------|:-----------------------------------------------------------------------------------------------------------| -| Application data in PostgreSQL | **Yes** (10.2) | **Yes** (10.2) | | -| Project repository | **Yes** (10.2) | **Yes** (10.7) | | -| Project wiki repository | **Yes** (10.2) | **Yes** (10.7) | | -| Project designs repository | **Yes** (12.7) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/32467) | | -| Uploads | **Yes** (10.2) | [No](https://gitlab.com/groups/gitlab-org/-/epics/1817) | Verified only on transfer, or manually (*1*) | -| LFS objects | **Yes** (10.2) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/8922) | Verified only on transfer, or manually (*1*). Unavailable for new LFS objects in 11.11.x and 12.0.x (*2*). | -| CI job artifacts (other than traces) | **Yes** (10.4) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/8923) | Verified only manually (*1*) | -| Archived traces | **Yes** (10.4) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/8923) | Verified only on transfer, or manually (*1*) | -| Personal snippets | **Yes** (10.2) | **Yes** (10.2) | | -| [Versioned snippets](../../../user/snippets.md#versioned-snippets) | [No](https://gitlab.com/groups/gitlab-org/-/epics/2809) | [No](https://gitlab.com/groups/gitlab-org/-/epics/2810) | | -| Project snippets | **Yes** (10.2) | **Yes** (10.2) | | -| Object pools for forked project deduplication | **Yes** | No | | -| [Server-side Git hooks](../../server_hooks.md) | No | No | | -| [Elasticsearch integration](../../../integration/elasticsearch.md) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/1186) | No | | -| [GitLab Pages](../../pages/index.md) | [No](https://gitlab.com/groups/gitlab-org/-/epics/589) | No | | -| [Container Registry](../../packages/container_registry.md) | **Yes** (12.3) | No | | -| [NPM Registry](../../../user/packages/npm_registry/index.md) | **Yes** (13.2) | No | Behind feature flag `geo_package_file_replication`, enabled by default | -| [Maven Repository](../../../user/packages/maven_repository/index.md) | **Yes** (13.2) | No | Behind feature flag `geo_package_file_replication`, enabled by default | -| [Conan Repository](../../../user/packages/conan_repository/index.md) | **Yes** (13.2) | No | Behind feature flag `geo_package_file_replication`, enabled by default | -| [NuGet Repository](../../../user/packages/nuget_repository/index.md) | **Yes** (13.2) | No | Behind feature flag `geo_package_file_replication`, enabled by default | -| [PyPi Repository](../../../user/packages/pypi_repository/index.md) | **Yes** (13.2) | No | Behind feature flag `geo_package_file_replication`, enabled by default | -| [Composer Repository](../../../user/packages/composer_repository/index.md) | **Yes** (13.2) | No | Behind feature flag `geo_package_file_replication`, enabled by default | -| [External merge request diffs](../../merge_request_diffs.md) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/33817) | No | | -| [Terraform State](../../terraform_state.md) | [No](https://gitlab.com/groups/gitlab-org/-/epics/3112)(*3*) | No | | -| [Vulnerability Export](../../../user/application_security/security_dashboard/#export-vulnerabilities) | [No](https://gitlab.com/groups/gitlab-org/-/epics/3111)(*3*) | No | | -| Content in object storage | **Yes** (12.4) | No | | - -- (*1*): The integrity can be verified manually using - [Integrity Check Rake Task](../../raketasks/check.md) on both nodes and comparing - the output between them. -- (*2*): GitLab versions 11.11.x and 12.0.x are affected by [a bug that prevents any new - LFS objects from replicating](https://gitlab.com/gitlab-org/gitlab/-/issues/32696). -- (*3*): If you are using Object Storage, the replication can be performed by the - Object Storage provider if supported. Please see [Geo with Object Storage](object_storage.md) +| Feature | Replicated (added in GitLab version) | Verified (added in GitLab version) | Object Storage replication (please see [Geo with Object Storage](object_storage.md)) | Notes | +|:---------------------------------------------------------------------------------------------------------------|:-----------------------------------------------------------------------------------|:----------------------------------------------------------|:-------------------------------------------------------------------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| +| [Application data in PostgreSQL](../../postgresql/index.md) | **Yes** (10.2) | **Yes** (10.2) | No | | +| [Project repository](../../..//user/project/repository/) | **Yes** (10.2) | **Yes** (10.7) | No | | +| [Project wiki repository](../../../user/project/wiki/) | **Yes** (10.2) | **Yes** (10.7) | No | | +| [Uploads](../../uploads.md) | **Yes** (10.2) | [No](https://gitlab.com/groups/gitlab-org/-/epics/1817) | No | Verified only on transfer or manually using [Integrity Check Rake Task](../../raketasks/check.md) on both nodes and comparing the output between them. | +| [LFS objects](../../lfs/index.md) | **Yes** (10.2) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/8922) | Via Object Storage provider if supported. Native Geo support (Beta). | Verified only on transfer or manually using [Integrity Check Rake Task](../../raketasks/check.md) on both nodes and comparing the output between them. GitLab versions 11.11.x and 12.0.x are affected by [a bug that prevents any new LFS objects from replicating](https://gitlab.com/gitlab-org/gitlab/-/issues/32696). | +| [Personal snippets](../../../user/snippets.md#personal-snippets) | **Yes** (10.2) | **Yes** (10.2) | No | | +| [Project snippets](../../../user/snippets.md#project-snippets) | **Yes** (10.2) | **Yes** (10.2) | No | | +| [CI job artifacts (other than Job Logs)](../../../ci/pipelines/job_artifacts.md) | **Yes** (10.4) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/8923) | Via Object Storage provider if supported. Native Geo support (Beta) . | Verified only manually using [Integrity Check Rake Task](../../raketasks/check.md) on both nodes and comparing the output between them | +| [Job logs](../../job_logs.md) | **Yes** (10.4) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/8923) | Via Object Storage provider if supported. Native Geo support (Beta). | Verified only on transfer or manually using [Integrity Check Rake Task](../../raketasks/check.md) on both nodes and comparing the output between them | +| [Object pools for forked project deduplication](../../../development/git_object_deduplication.md) | **Yes** | No | No | | +| [Container Registry](../../packages/container_registry.md) | **Yes** (12.3) | No | No | Disabled by default. See [instructions](./docker_registry.md) to enable. | +| [Content in object storage (beta)](object_storage.md) | **Yes** (12.4) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/13845) | No | | +| [Project designs repository](../../../user/project/issues/design_management.md) | **Yes** (12.7) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/32467) | Via Object Storage provider if supported. Native Geo support (Beta). | | +| [NPM Registry](../../../user/packages/npm_registry/index.md) | **Yes** (13.2) | [No](https://gitlab.com/groups/gitlab-org/-/epics/1817) | Via Object Storage provider if supported. Native Geo support (Beta). | Behind feature flag `geo_package_file_replication`, enabled by default | +| [Maven Repository](../../../user/packages/maven_repository/index.md) | **Yes** (13.2) | [No](https://gitlab.com/groups/gitlab-org/-/epics/1817) | Via Object Storage provider if supported. Native Geo support (Beta). | Behind feature flag `geo_package_file_replication`, enabled by default | +| [Conan Repository](../../../user/packages/conan_repository/index.md) | **Yes** (13.2) | [No](https://gitlab.com/groups/gitlab-org/-/epics/1817) | Via Object Storage provider if supported. Native Geo support (Beta). | Behind feature flag `geo_package_file_replication`, enabled by default | +| [NuGet Repository](../../../user/packages/nuget_repository/index.md) | **Yes** (13.2) | [No](https://gitlab.com/groups/gitlab-org/-/epics/1817) | Via Object Storage provider if supported. Native Geo support (Beta). | Behind feature flag `geo_package_file_replication`, enabled by default | +| [PyPI Repository](../../../user/packages/pypi_repository/index.md) | **Yes** (13.2) | [No](https://gitlab.com/groups/gitlab-org/-/epics/1817) | Via Object Storage provider if supported. Native Geo support (Beta). | Behind feature flag `geo_package_file_replication`, enabled by default | +| [Composer Repository](../../../user/packages/composer_repository/index.md) | **Yes** (13.2) | [No](https://gitlab.com/groups/gitlab-org/-/epics/1817) | Via Object Storage provider if supported. Native Geo support (Beta). | Behind feature flag `geo_package_file_replication`, enabled by default | +| [Generic packages](../../../user/packages/generic_packages/index.md) | **Yes** (13.5) | [No](https://gitlab.com/groups/gitlab-org/-/epics/1817) | Via Object Storage provider if supported. Native Geo support (Beta). | Behind feature flag `geo_package_file_replication`, enabled by default | +| [Versioned Terraform State](../../terraform_state.md) | **Yes** (13.5) | No | Via Object Storage provider if supported. Native Geo support (Beta). | Behind feature flag `geo_terraform_state_version_replication`, enabled by default | +| [External merge request diffs](../../merge_request_diffs.md) | **Yes** (13.5) | No | Behind feature flag `geo_merge_request_diff_replication`, enabled by default | | +| [Versioned snippets](../../../user/snippets.md#versioned-snippets) | [No](https://gitlab.com/groups/gitlab-org/-/epics/2809) | [No](https://gitlab.com/groups/gitlab-org/-/epics/2810) | No | | +| [Server-side Git hooks](../../server_hooks.md) | [No](https://gitlab.com/groups/gitlab-org/-/epics/1867) | No | No | | +| [Elasticsearch integration](../../../integration/elasticsearch.md) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/1186) | No | No | | +| [GitLab Pages](../../pages/index.md) | [No](https://gitlab.com/groups/gitlab-org/-/epics/589) | No | No | | +| [CI Pipeline Artifacts](https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/models/ci/pipeline_artifact.rb) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/238464) | No | Via Object Storage provider if supported. Native Geo support (Beta). | Persists additional artifacts after a pipeline completes | +| [Dependency proxy images](../../../user/packages/dependency_proxy/index.md) | [No](https://gitlab.com/gitlab-org/gitlab/-/issues/259694) | No | No | Blocked on [Geo: Secondary Mimicry](https://gitlab.com/groups/gitlab-org/-/epics/1528). Note that replication of this cache is not needed for Disaster Recovery purposes because it can be recreated from external sources. | +| [Vulnerability Export](../../../user/application_security/security_dashboard/#export-vulnerabilities) | [Not planned](https://gitlab.com/groups/gitlab-org/-/epics/3111) | No | Via Object Storage provider if supported. Native Geo support (Beta). | Not planned because they are ephemeral and sensitive. They can be regenerated on demand. | diff --git a/doc/administration/geo/replication/disable_geo.md b/doc/administration/geo/replication/disable_geo.md index aed8e5fc3bc..14a11d9c1e3 100644 --- a/doc/administration/geo/replication/disable_geo.md +++ b/doc/administration/geo/replication/disable_geo.md @@ -29,7 +29,7 @@ anymore on these nodes. You can follow our docs to [remove your secondary Geo no If the current node that you want to keep using is a secondary node, you need to first promote it to primary. You can use our steps on [how to promote a secondary node](../disaster_recovery/#step-3-promoting-a-secondary-node) -in order to do that. +to do that. ## Remove the primary node from the UI diff --git a/doc/administration/geo/replication/faq.md b/doc/administration/geo/replication/faq.md index 3892d73b465..f7f391b360e 100644 --- a/doc/administration/geo/replication/faq.md +++ b/doc/administration/geo/replication/faq.md @@ -67,3 +67,7 @@ That's totally fine. We use HTTP(s) to fetch repository changes from the **prima ## Is this possible to set up a Docker Registry for a **secondary** node that mirrors the one on the **primary** node? Yes. See [Docker Registry for a **secondary** node](docker_registry.md). + +## Can I login to a secondary node? + +Yes, but secondary nodes receive all authentication data (like user accounts and logins) from the primary instance. This means you will be re-directed to the primary for authentication and routed back afterwards. diff --git a/doc/administration/geo/replication/geo_validation_tests.md b/doc/administration/geo/replication/geo_validation_tests.md index 8247b8c6336..c28688930b5 100644 --- a/doc/administration/geo/replication/geo_validation_tests.md +++ b/doc/administration/geo/replication/geo_validation_tests.md @@ -114,6 +114,22 @@ The following are GitLab upgrade validation tests we performed. The following are PostgreSQL upgrade validation tests we performed. +### September 2020 + +[Verify PostgreSQL 12 upgrade for Geo installations](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/5454): + +- Description: With PostgreSQL 12 available as an opt-in version in GitLab 13.3, we tested upgrading + existing Geo installations from PostgreSQL 11 to 12. We also re-tested fresh installations of GitLab + with Geo after fixes were made to support PostgreSQL 12. These tests were done using a + [nightly build](https://packages.gitlab.com/gitlab/nightly-builds/packages/ubuntu/bionic/gitlab-ee_13.3.6+rnightly.169516.d5209202-0_amd64.deb) + of GitLab 13.4. +- Outcome: Tests were successful for Geo deployments with a single database node on the primary and secondary. + We encountered known issues with repmgr and Patroni managed PostgreSQL clusters on the Geo primary. Using + PostgreSQL 12 with a database cluster on the primary is not recommended until the issues are resolved. +- Known issues for PostgreSQL clusters: + - [Ensure Patroni detects PostgreSQL update](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/5423) + - [Allow configuring permanent replication slots in patroni](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/5628) + ### August 2020 [Verify Geo installation with PostgreSQL 12](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/5453): @@ -168,5 +184,4 @@ The following are additional validation tests we performed. [Test Gitaly Cluster on a Geo Deployment](https://gitlab.com/gitlab-org/gitlab/-/issues/223210): - Description: Tested a Geo deployment with Gitaly clusters configured on both the primary and secondary Geo sites. Triggered automatic Gitaly cluster failover on the primary Geo site, and ran end-to-end Geo tests. Then triggered Gitaly cluster failover on the secondary Geo site, and re-ran the end-to-end Geo tests. - - Outcome: Successful end-to-end tests before and after Gitaly cluster failover on the primary site, and before and after Gitaly cluster failover on the secondary site. diff --git a/doc/administration/geo/replication/img/geo-ha-diagram.png b/doc/administration/geo/replication/img/geo-ha-diagram.png Binary files differnew file mode 100644 index 00000000000..da5d612827c --- /dev/null +++ b/doc/administration/geo/replication/img/geo-ha-diagram.png diff --git a/doc/administration/geo/replication/multiple_servers.md b/doc/administration/geo/replication/multiple_servers.md index cba41c375a3..7d65d2165c5 100644 --- a/doc/administration/geo/replication/multiple_servers.md +++ b/doc/administration/geo/replication/multiple_servers.md @@ -13,7 +13,7 @@ described, it is possible to adapt these instructions to your needs. ## Architecture overview - + _[diagram source - GitLab employees only](https://docs.google.com/drawings/d/1z0VlizKiLNXVVVaERFwgsIOuEgjcUqDTWPdQYsE7Z4c/edit)_ @@ -133,7 +133,7 @@ Configure the following services, again using the non-Geo multi-node documentation: - [Configuring Redis for GitLab](../../redis/replication_and_failover.md#example-configuration-for-the-gitlab-application) for multiple nodes. -- [Gitaly](../../high_availability/gitaly.md), which will store data that is +- [Gitaly](../../gitaly/index.md), which will store data that is synchronized from the **primary** node. NOTE: **Note:** @@ -422,7 +422,6 @@ application servers above, with some changes to run only the `sidekiq` service: ## alertmanager['enable'] = false consul['enable'] = false - geo_logcursor['enable'] = false gitaly['enable'] = false gitlab_exporter['enable'] = false gitlab_workhorse['enable'] = false diff --git a/doc/administration/geo/replication/troubleshooting.md b/doc/administration/geo/replication/troubleshooting.md index f6d6f39fb19..b62c5c6f460 100644 --- a/doc/administration/geo/replication/troubleshooting.md +++ b/doc/administration/geo/replication/troubleshooting.md @@ -386,6 +386,15 @@ This happens when you have added IP addresses without a subnet mask in `postgres To fix this, add the subnet mask in `/etc/gitlab/gitlab.rb` under `postgresql['md5_auth_cidr_addresses']` to respect the CIDR format (i.e. `1.2.3.4/32`). +### Message: `Found data in the gitlabhq_production database!` when running `gitlab-ctl replicate-geo-database` + +This happens if data is detected in the `projects` table. When one or more projects are detected, the operation +is aborted to prevent accidental data loss. To bypass this message, pass the `--force` option to the command. + +In GitLab 13.4, a seed project is added when GitLab is first installed. This makes it necessary to pass `--force` even +on a new Geo secondary node. There is an [issue to account for seed projects](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/5618) +when checking the database. + ### Very large repositories never successfully synchronize on the **secondary** node GitLab places a timeout on all repository clones, including project imports @@ -483,8 +492,8 @@ to start again from scratch, there are a few steps that can help you: gitlab-ctl start geo-postgresql ``` - Reconfigure in order to recreate the folders and make sure permissions and ownership - are correctly + Reconfigure to recreate the folders and make sure permissions and ownership + are correct: ```shell gitlab-ctl reconfigure @@ -605,46 +614,18 @@ or `gitlab-ctl promote-to-primary-node`, either: ### Message: ActiveRecord::RecordInvalid: Validation failed: Enabled Geo primary node cannot be disabled -This error may occur if you have paused replication from the original primary node before attempting to promote this node. -To double check this, you can do the following: - -- Get the current secondary node's ID using: - - ```shell - sudo gitlab-rails runner 'puts GeoNode.current_node.id' - ``` - -- Double check that the node is active through the database by running the following - on the secondary node, replacing `ID_FROM_ABOVE`: - - ```shell - sudo gitlab-rails dbconsole - - SELECT enabled FROM geo_nodes WHERE id = ID_FROM_ABOVE; - ``` - -- If the above returned `f` it means that the replication was paused. - You can re-enable it through an `UPDATE` statement in the database: - - ```shell - sudo gitlab-rails dbconsole - - UPDATE geo_nodes SET enabled = 't' WHERE id = ID_FROM_ABOVE; - ``` - -### While Promoting the secondary, I got an error `ActiveRecord::RecordInvalid` - If you disabled a secondary node, either with the [replication pause task](../index.md#pausing-and-resuming-replication) -(13.2) or via the UI (13.1 and earlier), you must first re-enable the -node before you can continue. This is fixed in 13.4. +(13.2) or by using the user interface (13.1 and earlier), you must first +re-enable the node before you can continue. This is fixed in 13.4. -From `gitlab-psql`, execute the following, replacing `<your secondary url>` -with the URL for your secondary server starting with `http` or `https` and ending with a `/`. +Run the following command, replacing `https://<secondary url>/` with the URL +for your secondary server, using either `http` or `https`, and ensuring that you +end the URL with a slash (`/`): ```shell -SECONDARY_URL="https://<secondary url>/" -DATABASE_NAME="gitlabhq_production" -sudo gitlab-psql -d "$DATABASE_NAME" -c "UPDATE geo_nodes SET enabled = true WHERE url = '$SECONDARY_URL';" +sudo gitlab-rails dbconsole + +UPDATE geo_nodes SET enabled = true WHERE url = 'https://<secondary url>/' AND enabled = false;" ``` This should update 1 row. diff --git a/doc/administration/geo/replication/updating_the_geo_nodes.md b/doc/administration/geo/replication/updating_the_geo_nodes.md index b78aeb06ebf..1af2b8d0b88 100644 --- a/doc/administration/geo/replication/updating_the_geo_nodes.md +++ b/doc/administration/geo/replication/updating_the_geo_nodes.md @@ -21,14 +21,17 @@ Updating Geo nodes involves performing: NOTE: **Note:** These general update steps are not intended for [high-availability deployments](https://docs.gitlab.com/omnibus/update/README.html#multi-node--ha-deployment), and will cause downtime. If you want to avoid downtime, consider using [zero downtime updates](https://docs.gitlab.com/omnibus/update/README.html#zero-downtime-updates). +DANGER: **Danger:** +In GitLab 13.2 and later versions, promoting a secondary node to a primary while the secondary is paused fails. We are [investigating the issue](https://gitlab.com/gitlab-org/gitlab/-/issues/225173). Do not pause replication before promoting a secondary. If the node is paused, please resume before promoting. + To update the Geo nodes when a new GitLab version is released, update **primary** and all **secondary** nodes: 1. **Optional:** [Pause replication on each **secondary** node.](../index.md#pausing-and-resuming-replication) 1. Log into the **primary** node. -1. [Update GitLab on the **primary** node using Omnibus](https://docs.gitlab.com/omnibus/update/README.html). +1. [Update GitLab on the **primary** node using Omnibus's Geo-specific steps](https://docs.gitlab.com/omnibus/update/README.html#geo-deployment). 1. Log into each **secondary** node. -1. [Update GitLab on each **secondary** node using Omnibus](https://docs.gitlab.com/omnibus/update/README.html). +1. [Update GitLab on each **secondary** node using Omnibus's Geo-specific steps](https://docs.gitlab.com/omnibus/update/README.html#geo-deployment). 1. If you paused replication in step 1, [resume replication on each **secondary**](../index.md#pausing-and-resuming-replication) 1. [Test](#check-status-after-updating) **primary** and **secondary** nodes, and check version in each. diff --git a/doc/administration/geo/replication/version_specific_updates.md b/doc/administration/geo/replication/version_specific_updates.md index 1ae246e3e61..85c869eff92 100644 --- a/doc/administration/geo/replication/version_specific_updates.md +++ b/doc/administration/geo/replication/version_specific_updates.md @@ -397,7 +397,7 @@ existing repositories was added in GitLab 10.1. ## Updating to GitLab 10.0 -Since GitLab 10.0, we require all **Geo** systems to [use SSH key lookups via +In GitLab 10.0 and later, we require all **Geo** systems to [use SSH key lookups via the database](../../operations/fast_ssh_key_lookup.md) to avoid having to maintain consistency of the `authorized_keys` file for SSH access. Failing to do this will prevent users from being able to clone via SSH. @@ -447,8 +447,8 @@ Omnibus is the following: > **IMPORTANT**: With GitLab 9.0, the PostgreSQL version is updated to 9.6 and manual steps are -required in order to update the **secondary** nodes and keep the Streaming -Replication working. Downtime is required, so plan ahead. +required to update the **secondary** nodes and keep the Streaming Replication +working. Downtime is required, so plan ahead. The following steps apply only if you update from a 8.17 GitLab version to 9.0+. For previous versions, update to GitLab 8.17 first before attempting to @@ -611,9 +611,9 @@ is prepended with the relevant node for better clarity: ### Update tracking database on **secondary** node -After updating a **secondary** node, you might need to run migrations on -the tracking database. The tracking database was added in GitLab 9.1, -and it is required since 10.0. +After updating a **secondary** node, you might need to run migrations on the +tracking database. The tracking database was added in GitLab 9.1, and is +required in GitLab 10.0 and later. 1. Run database migrations on tracking database: diff --git a/doc/administration/geo/setup/database.md b/doc/administration/geo/setup/database.md index aefa8a0e399..09b9c71aeb7 100644 --- a/doc/administration/geo/setup/database.md +++ b/doc/administration/geo/setup/database.md @@ -17,9 +17,10 @@ NOTE: **Note:** The stages of the setup process must be completed in the documented order. Before attempting the steps in this stage, [complete all prior stages](../setup/index.md#using-omnibus-gitlab). -This document describes the minimal steps you have to take in order to -replicate your **primary** GitLab database to a **secondary** node's database. You may -have to change some values according to your database setup, how big it is, etc. +This document describes the minimal steps you have to take to replicate your +**primary** GitLab database to a **secondary** node's database. You may have to +change some values, based on attributes including your database's setup and +size. You are encouraged to first read through all the steps before executing them in your testing/production environment. @@ -433,6 +434,11 @@ data before running `pg_basebackup`. NOTE: **Note:** Replication slot names must only contain lowercase letters, numbers, and the underscore character. + NOTE: **Note:** + In GitLab 13.4, a seed project is added when GitLab is first installed. This makes it necessary to pass `--force` even + on a new Geo secondary node. There is an [issue to account for seed projects](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/5618) + when checking the database. + When prompted, enter the _plaintext_ password you set up for the `gitlab_replicator` user in the first step. |
