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-rw-r--r--doc/administration/geo/replication/troubleshooting.md83
-rw-r--r--doc/raketasks/import.md2
-rw-r--r--doc/user/admin_area/index.md4
-rw-r--r--doc/user/admin_area/labels.md22
-rw-r--r--doc/user/admin_area/license.md16
-rw-r--r--doc/user/admin_area/monitoring/health_check.md33
-rw-r--r--doc/user/admin_area/settings/usage_statistics.md2
-rw-r--r--doc/user/clusters/applications.md263
-rw-r--r--doc/user/group/clusters/index.md31
-rw-r--r--doc/user/project/clusters/index.md109
10 files changed, 405 insertions, 160 deletions
diff --git a/doc/administration/geo/replication/troubleshooting.md b/doc/administration/geo/replication/troubleshooting.md
index 9c95720487d..8a9694f02be 100644
--- a/doc/administration/geo/replication/troubleshooting.md
+++ b/doc/administration/geo/replication/troubleshooting.md
@@ -23,6 +23,8 @@ to help identify if something is wrong:
![Geo health check](img/geo_node_healthcheck.png)
+For information on how to resolve common errors reported from the UI, see [common errors](#common-errors).
+
If the UI is not working, or you are unable to log in, you can run the Geo
health check manually to get this information as well as a few more details.
This rake task can be run on an app node in the **primary** or **secondary**
@@ -40,7 +42,8 @@ Checking Geo ...
GitLab Geo is available ... yes
GitLab Geo is enabled ... yes
GitLab Geo secondary database is correctly configured ... yes
-Using database streaming replication? ... yes
+Database replication enabled? ... yes
+Database replication working? ... yes
GitLab Geo tracking database is configured to use Foreign Data Wrapper? ... yes
GitLab Geo tracking database Foreign Data Wrapper schema is up-to-date? ... yes
GitLab Geo HTTP(S) connectivity ...
@@ -68,22 +71,22 @@ Example output:
```
http://secondary.example.com/
-----------------------------------------------------
- GitLab Version: 11.8.1-ee
+ GitLab Version: 11.10.4-ee
Geo Role: Secondary
Health Status: Healthy
- Repositories: 190/190 (100%)
- Verified Repositories: 190/190 (100%)
- Wikis: 190/190 (100%)
- Verified Wikis: 190/190 (100%)
- LFS Objects: 35/35 (100%)
- Attachments: 528/528 (100%)
- CI job artifacts: 477/477 (100%)
- Repositories Checked: 0/190 (0%)
+ Repositories: 289/289 (100%)
+ Verified Repositories: 289/289 (100%)
+ Wikis: 289/289 (100%)
+ Verified Wikis: 289/289 (100%)
+ LFS Objects: 8/8 (100%)
+ Attachments: 5/5 (100%)
+ CI job artifacts: 0/0 (0%)
+ Repositories Checked: 0/289 (0%)
Sync Settings: Full
Database replication lag: 0 seconds
- Last event ID seen from primary: 2158 (about 2 minute ago)
- Last event ID processed by cursor: 2158 (about 2 minute ago)
- Last status report was: 4 minutes ago
+ Last event ID seen from primary: 10215 (about 2 minutes ago)
+ Last event ID processed by cursor: 10215 (about 2 minutes ago)
+ Last status report was: 2 minutes ago
```
## Is Postgres replication working?
@@ -455,3 +458,57 @@ reload of the FDW schema. To manually reload the FDW schema:
[database-start-replication]: database.md#step-3-initiate-the-replication-process
[database-pg-replication]: database.md#postgresql-replication
+
+## Common errors
+
+This section documents common errors reported in the admin UI and how to fix them.
+
+### Geo database configuration file is missing
+
+GitLab cannot find or doesn't have permission to access the `database_geo.yml` configuration file.
+
+In an Omnibus GitLab installation, the file should be in `/var/opt/gitlab/gitlab-rails/etc`.
+If it doesn't exist or inadvertent changes have been made to it, run `sudo gitlab-ctl reconfigure` to restore it to its correct state.
+
+
+If this path is mounted on a remote volume, please check your volume configuration and that it has correct permissions.
+
+### Geo node has a database that is writable which is an indication it is not configured for replication with the primary node.
+
+This error refers to a problem with the database replica on a **secondary** node,
+which Geo expects to have access to. It usually means, either:
+
+- An unsupported replication method was used (for example, logical replication).
+- The instructions to setup a [Geo database replication](database.md) were not followed correctly.
+
+A common source of confusion with **secondary** nodes is that it requires two separate
+PostgreSQL instances:
+
+- A read-only replica of the **primary** node.
+- A regular, writable instance that holds replication metadata. That is, the Geo tracking database.
+
+### Geo node does not appear to be replicating the database from the primary node.
+
+The most common problems that prevent the database from replicating correctly are:
+
+- **Secondary** nodes cannot reach the **primary** node. Check credentials, firewall rules, etc.
+- SSL certificate problems. Make sure you copied `/etc/gitlab/gitlab-secrets.json` from the **primary** node.
+- Database storage disk is full.
+- Database replication slot is misconfigured.
+- Database is not using a replication slot or another alternative and cannot catch-up because WAL files were purged.
+
+Make sure you follow the [Geo database replication](database.md) instructions for supported configuration.
+
+### Geo database version (...) does not match latest migration (...)
+
+If you are using GitLab Omnibus installation, something might have failed during upgrade. You can:
+
+- Run `sudo gitlab-ctl reconfigure`.
+- Manually trigger the database migration by running: `sudo gitlab-rake geo:db:migrate` as root on the **secondary** node.
+
+### Geo database is not configured to use Foreign Data Wrapper
+
+This error means the Geo Tracking Database doesn't have the FDW server and credentials
+configured.
+
+See [How do I fix a "Foreign Data Wrapper (FDW) is not configured" error?](#how-do-i-fix-a-foreign-data-wrapper-fdw-is-not-configured-error).
diff --git a/doc/raketasks/import.md b/doc/raketasks/import.md
index bb316df5b9a..b59c06a24ea 100644
--- a/doc/raketasks/import.md
+++ b/doc/raketasks/import.md
@@ -16,7 +16,7 @@
The new folder needs to have git user ownership and read/write/execute access for git user and its group:
```
-sudo -u git mkdir /var/opt/gitlab/git-data/repository-import-<date>/new_group
+sudo -u git mkdir -p /var/opt/gitlab/git-data/repository-import-<date>/new_group
```
### Copy your bare repositories inside this newly created folder:
diff --git a/doc/user/admin_area/index.md b/doc/user/admin_area/index.md
index d2995d48833..52c4d2b997c 100644
--- a/doc/user/admin_area/index.md
+++ b/doc/user/admin_area/index.md
@@ -1,3 +1,7 @@
+---
+type: reference
+---
+
# GitLab Admin Area **[CORE ONLY]**
The Admin Area provides a web UI for administering some features of GitLab self-managed instances.
diff --git a/doc/user/admin_area/labels.md b/doc/user/admin_area/labels.md
index e383142c33e..eba27548f86 100644
--- a/doc/user/admin_area/labels.md
+++ b/doc/user/admin_area/labels.md
@@ -1,9 +1,25 @@
+---
+type: reference
+---
+
# Labels administration **[CORE ONLY]**
-## Default Labels
+In the Admin Area, you can manage labels for the GitLab instance. For more details, see [Labels](../project/labels.md).
-### Define your own default Label Set
+## Default Labels
-Labels that are created within the Labels view on the Admin Dashboard will be automatically added to each new project.
+Labels created in the Admin Area become available to each _new_ project.
![Default label set](img/admin_labels.png)
+
+<!-- ## Troubleshooting
+
+Include any troubleshooting steps that you can foresee. If you know beforehand what issues
+one might have when setting this up, or when something is changed, or on upgrading, it's
+important to describe those, too. Think of things that may go wrong and include them here.
+This is important to minimize requests for support, and to avoid doc comments with
+questions that you know someone might ask.
+
+Each scenario can be a third-level heading, e.g. `### Getting error message X`.
+If you have none to add when creating a doc, leave this section in place
+but commented out to help encourage others to add to it in the future. -->
diff --git a/doc/user/admin_area/license.md b/doc/user/admin_area/license.md
index 49959a9daef..1e8ce04da92 100644
--- a/doc/user/admin_area/license.md
+++ b/doc/user/admin_area/license.md
@@ -1,3 +1,7 @@
+---
+type: howto
+---
+
# Activate all GitLab Enterprise Edition functionality with a license **[STARTER ONLY]**
To activate all GitLab Enterprise Edition (EE) functionality, you need to upload
@@ -108,3 +112,15 @@ but only the latest license will be used as the active license.
[free trial]: https://about.gitlab.com/free-trial/
[pricing]: https://about.gitlab.com/pricing/
+
+<!-- ## Troubleshooting
+
+Include any troubleshooting steps that you can foresee. If you know beforehand what issues
+one might have when setting this up, or when something is changed, or on upgrading, it's
+important to describe those, too. Think of things that may go wrong and include them here.
+This is important to minimize requests for support, and to avoid doc comments with
+questions that you know someone might ask.
+
+Each scenario can be a third-level heading, e.g. `### Getting error message X`.
+If you have none to add when creating a doc, leave this section in place
+but commented out to help encourage others to add to it in the future. --> \ No newline at end of file
diff --git a/doc/user/admin_area/monitoring/health_check.md b/doc/user/admin_area/monitoring/health_check.md
index e183898dfb1..43e35505e36 100644
--- a/doc/user/admin_area/monitoring/health_check.md
+++ b/doc/user/admin_area/monitoring/health_check.md
@@ -1,12 +1,16 @@
-# Health Check
+---
+type: concepts, howto
+---
-> **Notes:**
+# Health Check
+> NOTE: **Note:**
+>
> - Liveness and readiness probes were [introduced][ce-10416] in GitLab 9.1.
> - The `health_check` endpoint was [introduced][ce-3888] in GitLab 8.8 and was
> be deprecated in GitLab 9.1.
> - [Access token](#access-token-deprecated) has been deprecated in GitLab 9.4
-> in favor of [IP whitelist](#ip-whitelist)
+> in favor of [IP whitelist](#ip-whitelist).
GitLab provides liveness and readiness probes to indicate service health and
reachability to required services. These probes report on the status of the
@@ -17,8 +21,7 @@ traffic until the system is ready or restart the container as needed.
## IP whitelist
To access monitoring resources, the requesting client IP needs to be included in a whitelist.
-
-[Read how to add IPs to a whitelist for the monitoring endpoints][admin].
+For details, see [how to add IPs to a whitelist for the monitoring endpoints](../../../administration/monitoring/ip_whitelist.md).
## Using the endpoints
@@ -87,9 +90,8 @@ will return a valid successful HTTP status code, and a `success` message.
## Access token (Deprecated)
->**Note:**
-Access token has been deprecated in GitLab 9.4
-in favor of [IP whitelist](#ip-whitelist)
+> NOTE: **Note:**
+> Access token has been deprecated in GitLab 9.4 in favor of [IP whitelist](#ip-whitelist).
An access token needs to be provided while accessing the probe endpoints. The current
accepted token can be found under the **Admin area ➔ Monitoring ➔ Health check**
@@ -103,10 +105,21 @@ The access token can be passed as a URL parameter:
https://gitlab.example.com/-/readiness?token=ACCESS_TOKEN
```
+<!-- ## Troubleshooting
+
+Include any troubleshooting steps that you can foresee. If you know beforehand what issues
+one might have when setting this up, or when something is changed, or on upgrading, it's
+important to describe those, too. Think of things that may go wrong and include them here.
+This is important to minimize requests for support, and to avoid doc comments with
+questions that you know someone might ask.
+
+Each scenario can be a third-level heading, e.g. `### Getting error message X`.
+If you have none to add when creating a doc, leave this section in place
+but commented out to help encourage others to add to it in the future. -->
+
[ce-10416]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/10416
[ce-3888]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/3888
[pingdom]: https://www.pingdom.com
[nagios-health]: https://nagios-plugins.org/doc/man/check_http.html
[newrelic-health]: https://docs.newrelic.com/docs/alerts/alert-policies/downtime-alerts/availability-monitoring
-[kubernetes]: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/
-[admin]: ../../../administration/monitoring/ip_whitelist.md
+[kubernetes]: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/ \ No newline at end of file
diff --git a/doc/user/admin_area/settings/usage_statistics.md b/doc/user/admin_area/settings/usage_statistics.md
index 8b5d80efb0d..01d1eb1cd0e 100644
--- a/doc/user/admin_area/settings/usage_statistics.md
+++ b/doc/user/admin_area/settings/usage_statistics.md
@@ -4,7 +4,7 @@ GitLab Inc. will periodically collect information about your instance in order
to perform various actions.
All statistics are opt-out, you can enable/disable them from the admin panel
-under **Admin area > Settings > Usage statistics**.
+under **Admin area > Settings > Metrics and profiling > Usage statistics**.
## Version check **[CORE ONLY]**
diff --git a/doc/user/clusters/applications.md b/doc/user/clusters/applications.md
new file mode 100644
index 00000000000..97abe99fe62
--- /dev/null
+++ b/doc/user/clusters/applications.md
@@ -0,0 +1,263 @@
+# GitLab Managed Apps
+
+GitLab provides **GitLab Managed Apps**, a one-click install for various applications which can
+be added directly to your configured cluster. These applications are
+needed for [Review Apps](../../ci/review_apps/index.md) and
+[deployments](../../ci/environments.md) when using [Auto DevOps](../../topics/autodevops/index.md).
+You can install them after you
+[create a cluster](../project/clusters/index.md#adding-and-creating-a-new-gke-cluster-via-gitlab).
+
+## Installing applications
+
+Applications managed by GitLab will be installed onto the `gitlab-managed-apps` namespace.
+This namespace:
+
+- Is different from the namespace used for project deployments.
+- Is created once.
+- Has a non-configurable name.
+
+To see a list of available applications to install:
+
+1. For a:
+ - Project-level cluster, navigate to your project's **Operations > Kubernetes**.
+ - Group-level cluster, navigate to your group's **Kubernetes** page.
+
+Install Helm first as it's used to install other applications.
+
+NOTE: **Note:**
+As of GitLab 11.6, Helm will be upgraded to the latest version supported
+by GitLab before installing any of the applications.
+
+The following applications can be installed:
+
+- [Helm](#helm)
+- [Ingress](#ingress)
+- [Cert-Manager](#cert-manager)
+- [Prometheus](#prometheus)
+- [GitLab Runner](#gitlab-runner)
+- [JupyterHub](#jupyterhub)
+- [Knative](#knative)
+
+With the exception of Knative, the applications will be installed in a dedicated
+namespace called `gitlab-managed-apps`.
+
+NOTE: **Note:**
+Some applications are installable only for a project-level cluster.
+Support for installing these applications in a group-level cluster is
+planned for future releases.
+For updates, see [the issue tracking
+progress](https://gitlab.com/gitlab-org/gitlab-ce/issues/51989).
+
+CAUTION: **Caution:**
+If you have an existing Kubernetes cluster with Helm already installed,
+you should be careful as GitLab cannot detect it. In this case, installing
+Helm via the applications will result in the cluster having it twice, which
+can lead to confusion during deployments.
+
+### Helm
+
+> - Available for project-level clusters since GitLab 10.2.
+> - Available for group-level clusters since GitLab 11.6.
+
+[Helm](https://docs.helm.sh/) is a package manager for Kubernetes and is
+required to install all the other applications. It is installed in its
+own pod inside the cluster which can run the `helm` CLI in a safe
+environment.
+
+### Cert-Manager
+
+> - Available for project-level clusters since GitLab 11.6.
+> - Available for group-level clusters since GitLab 11.6.
+
+[Cert-Manager](https://docs.cert-manager.io/en/latest/) is a native
+Kubernetes certificate management controller that helps with issuing
+certificates. Installing Cert-Manager on your cluster will issue a
+certificate by [Let's Encrypt](https://letsencrypt.org/) and ensure that
+certificates are valid and up-to-date.
+
+NOTE: **Note:**
+The
+[stable/cert-manager](https://github.com/helm/charts/tree/master/stable/cert-manager)
+chart is used to install this application with a
+[`values.yaml`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/vendor/cert_manager/values.yaml)
+file.
+
+### GitLab Runner
+
+> - Available for project-level clusters since GitLab 10.6.
+> - Available for group-level clusters since GitLab 11.10.
+
+[GitLab Runner](https://docs.gitlab.com/runner/) is the open source
+project that is used to run your jobs and send the results back to
+GitLab. It is used in conjunction with [GitLab
+CI/CD](../../ci/README.md), the open-source continuous integration
+service included with GitLab that coordinates the jobs. When installing
+the GitLab Runner via the applications, it will run in **privileged
+mode** by default. Make sure you read the [security
+implications](../project/clusters/index.md/#security-implications) before doing so.
+
+NOTE: **Note:**
+The
+[runner/gitlab-runner](https://gitlab.com/charts/gitlab-runner)
+chart is used to install this application with a
+[`values.yaml`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/vendor/runner/values.yaml)
+file.
+
+### Ingress
+
+> - Available for project-level clusters since GitLab 10.2.
+> - Available for group-level clusters since GitLab 11.6.
+
+[Ingress](https://kubernetes.github.io/ingress-nginx/) can provide load
+balancing, SSL termination, and name-based virtual hosting. It acts as a
+web proxy for your applications and is useful if you want to use [Auto
+DevOps] or deploy your own web apps.
+
+NOTE: **Note:**
+The
+[stable/nginx-ingress](https://github.com/helm/charts/tree/master/stable/nginx-ingress)
+chart is used to install this application with a
+[`values.yaml`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/vendor/ingress/values.yaml)
+file.
+
+### JupyterHub
+
+> Available for project-level clusters since GitLab 11.0.
+
+[JupyterHub](https://jupyterhub.readthedocs.io/en/stable/) is a
+multi-user service for managing notebooks across a team. [Jupyter
+Notebooks](https://jupyter-notebook.readthedocs.io/en/latest/) provide a
+web-based interactive programming environment used for data analysis,
+visualization, and machine learning.
+
+Authentication will be enabled only for [project
+members](../project/members/index.md) with [Developer or
+higher](../permissions.md) access to the project.
+
+We use a [custom Jupyter
+image](https://gitlab.com/gitlab-org/jupyterhub-user-image/blob/master/Dockerfile)
+that installs additional useful packages on top of the base Jupyter. You
+will also see ready-to-use DevOps Runbooks built with Nurtch's [Rubix library](https://github.com/amit1rrr/rubix).
+
+More information on
+creating executable runbooks can be found in [our Nurtch
+documentation](../project/clusters/runbooks/index.md#nurtch-executable-runbooks). Note that
+Ingress must be installed and have an IP address assigned before
+JupyterHub can be installed.
+
+NOTE: **Note:**
+The
+[jupyter/jupyterhub](https://jupyterhub.github.io/helm-chart/)
+chart is used to install this application with a
+[`values.yaml`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/vendor/jupyter/values.yaml)
+file.
+
+### Knative
+
+> Available for project-level clusters since GitLab 11.5.
+
+[Knative](https://cloud.google.com/knative) provides a platform to
+create, deploy, and manage serverless workloads from a Kubernetes
+cluster. It is used in conjunction with, and includes
+[Istio](https://istio.io) to provide an external IP address for all
+programs hosted by Knative.
+
+You will be prompted to enter a wildcard
+domain where your applications will be exposed. Configure your DNS
+server to use the external IP address for that domain. For any
+application created and installed, they will be accessible as
+`<program_name>.<kubernetes_namespace>.<domain_name>`. This will require
+your kubernetes cluster to have [RBAC
+enabled](../project/clusters/index.md#rbac-cluster-resources).
+
+NOTE: **Note:**
+The
+[knative/knative](https://storage.googleapis.com/triggermesh-charts)
+chart is used to install this application.
+
+### Prometheus
+
+> - Available for project-level clusters since GitLab 10.4.
+> - Available for group-level clusters since GitLab 11.11.
+
+[Prometheus](https://prometheus.io/docs/introduction/overview/) is an
+open-source monitoring and alerting system useful to supervise your
+deployed applications.
+
+NOTE: **Note:**
+The
+[stable/prometheus](https://github.com/helm/charts/tree/master/stable/prometheus)
+chart is used to install this application with a
+[`values.yaml`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/vendor/prometheus/values.yaml)
+file.
+
+## Upgrading applications
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/24789)
+in GitLab 11.8.
+
+The applications below can be upgraded.
+
+| Application | GitLab version |
+| ----------- | -------------- |
+| Runner | 11.8+ |
+
+To upgrade an application:
+
+1. For a:
+ - Project-level cluster, navigate to your project's **Operations > Kubernetes**.
+ - Group-level cluster, navigate to your group's **Kubernetes** page.
+1. Select your cluster.
+1. If an upgrade is available, the **Upgrade** button is displayed. Click the button to upgrade.
+
+NOTE: **Note:**
+Upgrades will reset values back to the values built into the `runner`
+chart plus the values set by
+[`values.yaml`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/vendor/runner/values.yaml)
+
+## Uninstalling applications
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/issues/60665) in
+> GitLab 11.11.
+
+The applications below can be uninstalled.
+
+| Application | GitLab version | Notes |
+| ----------- | -------------- | ----- |
+| Prometheus | 11.11+ | All data will be deleted and cannot be restored. |
+
+To uninstall an application:
+
+1. For a:
+ - Project-level cluster, navigate to your project's **Operations > Kubernetes**.
+ - Group-level cluster, navigate to your group's **Kubernetes** page.
+1. Select your cluster.
+1. Click the **Uninstall** button for the application.
+
+Support for uninstalling all applications is planned for progressive rollout.
+To follow progress, see [the relevant
+epic](https://gitlab.com/groups/gitlab-org/-/epics/1201).
+
+## Troubleshooting applications
+
+Applications can fail with the following error:
+
+```text
+Error: remote error: tls: bad certificate
+```
+
+To avoid installation errors:
+
+- Before starting the installation of applications, make sure that time is synchronized
+ between your GitLab server and your Kubernetes cluster.
+- Ensure certificates are not out of sync. When installing applications, GitLab expects a new cluster with no previous installation of Helm.
+
+ You can confirm that the certificates match via `kubectl`:
+
+ ```sh
+ kubectl get configmaps/values-content-configuration-ingress -n gitlab-managed-apps -o \
+ "jsonpath={.data['cert\.pem']}" | base64 -d > a.pem
+ kubectl get secrets/tiller-secret -n gitlab-managed-apps -o "jsonpath={.data['ca\.crt']}" | base64 -d > b.pem
+ diff a.pem b.pem
+ ```
+
diff --git a/doc/user/group/clusters/index.md b/doc/user/group/clusters/index.md
index ff6aa4f5930..8458b4f5de3 100644
--- a/doc/user/group/clusters/index.md
+++ b/doc/user/group/clusters/index.md
@@ -12,33 +12,10 @@ your group, enabling you to use the same cluster across multiple projects.
## Installing applications
-GitLab provides a one-click install for various applications that can be
-added directly to your cluster.
-
-NOTE: **Note:**
-Applications will be installed in a dedicated namespace called
-`gitlab-managed-apps`. If you have added an existing Kubernetes cluster
-with Tiller already installed, you should be careful as GitLab cannot
-detect it. In this event, installing Tiller via the applications will
-result in the cluster having it twice. This can lead to confusion during
-deployments.
-
-| Application | GitLab version | Description | Helm Chart |
-| ----------- | -------------- | ----------- | ---------- |
-| [Helm Tiller](https://docs.helm.sh) | 11.6+ | Helm is a package manager for Kubernetes and is required to install all the other applications. It is installed in its own pod inside the cluster which can run the `helm` CLI in a safe environment. | n/a |
-| [Ingress](https://kubernetes.io/docs/concepts/services-networking/ingress) | 11.6+ | Ingress can provide load balancing, SSL termination, and name-based virtual hosting. It acts as a web proxy for your applications and is useful if you want to use [Auto DevOps](../../../topics/autodevops/index.md) or deploy your own web apps. | [stable/nginx-ingress](https://github.com/helm/charts/tree/master/stable/nginx-ingress) |
-| [Cert-Manager](https://docs.cert-manager.io/en/latest/) | 11.6+ | Cert-Manager is a native Kubernetes certificate management controller that helps with issuing certificates. Installing Cert-Manager on your cluster will issue a certificate by [Let's Encrypt](https://letsencrypt.org/) and ensure that certificates are valid and up-to-date. | [stable/cert-manager](https://github.com/helm/charts/tree/master/stable/cert-manager) |
-| [Prometheus](https://prometheus.io/docs/introduction/overview/) | 11.11+ | Prometheus is an open-source monitoring and alerting system useful to supervise your deployed applications. | [stable/prometheus](https://github.com/helm/charts/tree/master/stable/prometheus) |
-| [GitLab Runner](https://docs.gitlab.com/runner/) | 11.10+ | GitLab Runner is the open source project that is used to run your jobs and send the results back to GitLab. It is used in conjunction with [GitLab CI/CD](../../../ci/README.md), the open-source continuous integration service included with GitLab that coordinates the jobs. When installing the GitLab Runner via the applications, it will run in **privileged mode** by default. Make sure you read the [security implications](../../project/clusters/index.md#security-implications) before doing so. | [runner/gitlab-runner](https://gitlab.com/charts/gitlab-runner) |
-
-NOTE: **Note:**
-Some [cluster
-applications](../../project/clusters/index.md#installing-applications)
-are installable only for a project-level cluster. Support for installing these
-applications in a group-level cluster is planned for future releases. For updates, see:
-
-- Support installing [JupyterHub in group-level
- clusters](https://gitlab.com/gitlab-org/gitlab-ce/issues/51989)
+GitLab can install and manage some applications in your group-level
+cluster. For more information on installing, upgrading, uninstalling,
+and troubleshooting applications for your group cluster, see
+[Gitlab Managed Apps](../../clusters/applications.md).
## RBAC compatibility
diff --git a/doc/user/project/clusters/index.md b/doc/user/project/clusters/index.md
index bc4d732a405..e38e4059117 100644
--- a/doc/user/project/clusters/index.md
+++ b/doc/user/project/clusters/index.md
@@ -347,111 +347,10 @@ install it manually.
## Installing applications
-GitLab provides **GitLab Managed Apps**, a one-click install for various applications which can
-be added directly to your configured cluster. These applications are
-needed for [Review Apps](../../../ci/review_apps/index.md) and
-[deployments](../../../ci/environments.md) when using [Auto DevOps](../../../topics/autodevops/index.md).
-You can install them after you
-[create a cluster](#adding-and-creating-a-new-gke-cluster-via-gitlab).
-
-Applications managed by GitLab will be installed onto the `gitlab-managed-apps` namespace. This differrent
-from the namespace used for project deployments. It is only created once and its name is not configurable.
-
-To see a list of available applications to install:
-
-1. Navigate to your project's **Operations > Kubernetes**.
-1. Select your cluster.
-
-Install Helm first as it's used to install other applications.
-
-NOTE: **Note:**
-As of GitLab 11.6, Helm will be upgraded to the latest version supported
-by GitLab before installing any of the applications.
-
-| Application | GitLab version | Description | Helm Chart |
-| ----------- | :------------: | ----------- | --------------- |
-| [Helm](https://docs.helm.sh/) | 10.2+ | Helm is a package manager for Kubernetes and is required to install all the other applications. It is installed in its own pod inside the cluster which can run the `helm` CLI in a safe environment. | n/a |
-| [Ingress](https://kubernetes.io/docs/concepts/services-networking/ingress/) | 10.2+ | Ingress can provide load balancing, SSL termination, and name-based virtual hosting. It acts as a web proxy for your applications and is useful if you want to use [Auto DevOps] or deploy your own web apps. | [stable/nginx-ingress](https://github.com/helm/charts/tree/master/stable/nginx-ingress) |
-| [Cert-Manager](https://docs.cert-manager.io/en/latest/) | 11.6+ | Cert-Manager is a native Kubernetes certificate management controller that helps with issuing certificates. Installing Cert-Manager on your cluster will issue a certificate by [Let's Encrypt](https://letsencrypt.org/) and ensure that certificates are valid and up-to-date. | [stable/cert-manager](https://github.com/helm/charts/tree/master/stable/cert-manager) |
-| [Prometheus](https://prometheus.io/docs/introduction/overview/) | 10.4+ | Prometheus is an open-source monitoring and alerting system useful to supervise your deployed applications. | [stable/prometheus](https://github.com/helm/charts/tree/master/stable/prometheus) |
-| [GitLab Runner](https://docs.gitlab.com/runner/) | 10.6+ | GitLab Runner is the open source project that is used to run your jobs and send the results back to GitLab. It is used in conjunction with [GitLab CI/CD](../../../ci/README.md), the open-source continuous integration service included with GitLab that coordinates the jobs. When installing the GitLab Runner via the applications, it will run in **privileged mode** by default. Make sure you read the [security implications](#security-implications) before doing so. | [runner/gitlab-runner](https://gitlab.com/charts/gitlab-runner) |
-| [JupyterHub](http://jupyter.org/) | 11.0+ | [JupyterHub](https://jupyterhub.readthedocs.io/en/stable/) is a multi-user service for managing notebooks across a team. [Jupyter Notebooks](https://jupyter-notebook.readthedocs.io/en/latest/) provide a web-based interactive programming environment used for data analysis, visualization, and machine learning. We use a [custom Jupyter image](https://gitlab.com/gitlab-org/jupyterhub-user-image/blob/master/Dockerfile) that installs additional useful packages on top of the base Jupyter. Authentication will be enabled only for [project members](../members/index.md) with [Developer or higher](../../permissions.md) access to the project. You will also see ready-to-use DevOps Runbooks built with Nurtch's [Rubix library](https://github.com/amit1rrr/rubix). More information on creating executable runbooks can be found in [our Nurtch documentation](runbooks/index.md#nurtch-executable-runbooks). Note that Ingress must be installed and have an IP address assigned before JupyterHub can be installed. | [jupyter/jupyterhub](https://jupyterhub.github.io/helm-chart/) |
-| [Knative](https://cloud.google.com/knative) | 11.5+ | Knative provides a platform to create, deploy, and manage serverless workloads from a Kubernetes cluster. It is used in conjunction with, and includes [Istio](https://istio.io) to provide an external IP address for all programs hosted by Knative. You will be prompted to enter a wildcard domain where your applications will be exposed. Configure your DNS server to use the external IP address for that domain. For any application created and installed, they will be accessible as `<program_name>.<kubernetes_namespace>.<domain_name>`. This will require your kubernetes cluster to have [RBAC enabled](#rbac-cluster-resources). | [knative/knative](https://storage.googleapis.com/triggermesh-charts)
-
-With the exception of Knative, the applications will be installed in a dedicated
-namespace called `gitlab-managed-apps`.
-
-CAUTION: **Caution:**
-If you have an existing Kubernetes cluster with Helm already installed,
-you should be careful as GitLab cannot detect it. In this case, installing
-Helm via the applications will result in the cluster having it twice, which
-can lead to confusion during deployments.
-
-### Upgrading applications
-
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/24789)
-in GitLab 11.8.
-
-Users can perform a one-click upgrade for the GitLab Runner application,
-when there is an upgrade available.
-
-To upgrade the GitLab Runner application:
-
-1. Navigate to your project's **Operations > Kubernetes**.
-1. Select your cluster.
-1. Click the **Upgrade** button for the Runnner application.
-
-The **Upgrade** button will not be shown if there is no upgrade
-available.
-
-NOTE: **Note:**
-Upgrades will reset values back to the values built into the `runner`
-chart plus the values set by
-[`values.yaml`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/vendor/runner/values.yaml)
-
-### Uninstalling applications
-
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/issues/60665) in
-> GitLab 11.11.
-
-The applications below can be uninstalled.
-
-| Application | GitLab version | Notes |
-| ----------- | -------------- | ----- |
-| Prometheus | 11.11+ | All data will be deleted and cannot be restored. |
-
-To uninstall an application:
-
-1. Navigate to your project's **Operations > Kubernetes**.
-1. Select your cluster.
-1. Click the **Uninstall** button for the application.
-
-Support for uninstalling all applications is planned for progressive rollout.
-To follow progress, see [the relevant
-epic](https://gitlab.com/groups/gitlab-org/-/epics/1201).
-
-### Troubleshooting applications
-
-Applications can fail with the following error:
-
-```text
-Error: remote error: tls: bad certificate
-```
-
-To avoid installation errors:
-
-- Before starting the installation of applications, make sure that time is synchronized
- between your GitLab server and your Kubernetes cluster.
-- Ensure certificates are not out of sync. When installing applications, GitLab expects a new cluster with no previous installation of Helm.
-
- You can confirm that the certificates match via `kubectl`:
-
- ```sh
- kubectl get configmaps/values-content-configuration-ingress -n gitlab-managed-apps -o \
- "jsonpath={.data['cert\.pem']}" | base64 -d > a.pem
- kubectl get secrets/tiller-secret -n gitlab-managed-apps -o "jsonpath={.data['ca\.crt']}" | base64 -d > b.pem
- diff a.pem b.pem
- ```
+GitLab can install and manage some applications in your project-level
+cluster. For more information on installing, upgrading, uninstalling,
+and troubleshooting applications for your project cluster, see
+[Gitlab Managed Apps](../../clusters/applications.md).
## Getting the external endpoint