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| author | Achilleas Pipinellis <axil@gitlab.com> | 2018-06-12 12:38:10 +0200 |
|---|---|---|
| committer | Achilleas Pipinellis <axil@gitlab.com> | 2018-06-21 19:56:49 +0200 |
| commit | 72754e7faed59dff72535366d97029654a997e58 (patch) | |
| tree | 7d2bd4e56a39fe099b9eecacc7e3346ea3c4e079 /doc/topics | |
| parent | 458d18fef60abc3a1a94701514de7012295d6be5 (diff) | |
| download | gitlab-ce-72754e7faed59dff72535366d97029654a997e58.tar.gz | |
Document end to end flow for Kubernetes and Auto DevOps
Diffstat (limited to 'doc/topics')
29 files changed, 267 insertions, 116 deletions
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b/doc/topics/autodevops/img/rollout_staging_enabled.png diff --git a/doc/topics/autodevops/img/staging_enabled.png b/doc/topics/autodevops/img/staging_enabled.png Binary files differindex 0ef1a67d641..f0e0cd1cfcd 100644 --- a/doc/topics/autodevops/img/staging_enabled.png +++ b/doc/topics/autodevops/img/staging_enabled.png diff --git a/doc/topics/autodevops/index.md b/doc/topics/autodevops/index.md index 103836e59d0..9b1acbac17f 100644 --- a/doc/topics/autodevops/index.md +++ b/doc/topics/autodevops/index.md @@ -1,6 +1,6 @@ # Auto DevOps -> [Introduced][ce-37115] in GitLab 10.0. +> [Introduced][ce-37115] in GitLab 10.0. Generally available on GitLab 11.0. Auto DevOps automatically detects, builds, tests, deploys, and monitors your applications. @@ -13,6 +13,12 @@ without needing to configure anything. Just push your code and GitLab takes care of everything else. This makes it easier to start new projects and brings consistency to how applications are set up throughout a company. +## Quick start + +If you are using GitLab.com, see the [quick start guide](quick_start_guide.md) +for using Auto DevOps with GitLab.com and a Kubernetes cluster on Google Kubernetes +Engine. + ## Comparison to application platforms and PaaS Auto DevOps provides functionality described by others as an application @@ -34,7 +40,7 @@ in a couple of ways: ## Features Comprised of a set of stages, Auto DevOps brings these best practices to your -project in an easy and automatic way: +project in a simple and automatic way: 1. [Auto Build](#auto-build) 1. [Auto Test](#auto-test) @@ -135,10 +141,9 @@ and `1.2.3.4` is the IP address of your load balancer; generally NGINX ([see requirements](#requirements)). How to set up the DNS record is beyond the scope of this document; you should check with your DNS provider. -Alternatively you can use free public services like [nip.io](http://nip.io) or -[nip.io](http://nip.io) which provide automatic wildcard DNS without any -configuration. Just set the Auto DevOps base domain to `1.2.3.4.nip.io` or -`1.2.3.4.nip.io`. +Alternatively you can use free public services like [nip.io](http://nip.io) +which provide automatic wildcard DNS without any configuration. Just set the +Auto DevOps base domain to `1.2.3.4.nip.io`. Once set up, all requests will hit the load balancer, which in turn will route them to the Kubernetes pods that run your application(s). @@ -198,12 +203,6 @@ and verifying that your app is deployed as a review app in the Kubernetes cluster with the `review/*` environment scope. Similarly, you can check the other environments. -## Quick start - -If you are using GitLab.com, see our [quick start guide](quick_start_guide.md) -for using Auto DevOps with GitLab.com and an external Kubernetes cluster on -Google Cloud. - ## Enabling Auto DevOps If you haven't done already, read the [requirements](#requirements) to make @@ -288,7 +287,7 @@ NOTE: **Note:** Auto Test uses tests you already have in your application. If there are no tests, it's up to you to add them. -### Auto Code Quality +### Auto Code Quality **[STARTER]** Auto Code Quality uses the [Code Quality image](https://gitlab.com/gitlab-org/security-products/codequality) to run @@ -323,7 +322,7 @@ to run analysis on the project dependencies and checks for potential security is report is created, it's uploaded as an artifact which you can later download and check out. -In GitLab Ultimate, any security warnings are also +Any security warnings are also [shown in the merge request widget](https://docs.gitlab.com/ee//user/project/merge_requests/dependency_scanning.html). ### Auto License Management **[ULTIMATE]** @@ -331,12 +330,12 @@ In GitLab Ultimate, any security warnings are also > Introduced in [GitLab Ultimate][ee] 11.0. License Management uses the -[License Management Docker image](https://gitlab.com/gitlab-org/security-products/license_management) +[License Management Docker image](https://gitlab.com/gitlab-org/security-products/license-management) to search the project dependencies for their license. Once the report is created, it's uploaded as an artifact which you can later download and check out. -In GitLab Ultimate, any licenses are also +Any licenses are also [shown in the merge request widget](https://docs.gitlab.com/ee//user/project/merge_requests/license_management.html). ### Auto Container Scanning diff --git a/doc/topics/autodevops/quick_start_guide.md b/doc/topics/autodevops/quick_start_guide.md index 61c04f3d9bb..07ba61b48e6 100644 --- a/doc/topics/autodevops/quick_start_guide.md +++ b/doc/topics/autodevops/quick_start_guide.md @@ -1,143 +1,295 @@ -# Auto DevOps: quick start guide +# Getting started with Auto DevOps -> [Introduced][ce-37115] in GitLab 10.0. +This is a step-by-step guide that will help you deploy a project hosted on +GitLab.com to Google Kubernetes Engine, using [Auto DevOps](index.md). -This is a step-by-step guide to deploying a project hosted on GitLab.com to -Google Cloud, using Auto DevOps. +We will use the Kubernetes integration that GitLab provides, so you won't have +to create a Kubernetes cluster manually using the GCP console. -We made a minimal [Ruby -application](https://gitlab.com/auto-devops-examples/minimal-ruby-app) to use -as an example for this guide. It contains two main files: +## Configuring your Google account -* `server.rb` - our application. It will start an HTTP server on port 5000 and - render "Hello, world!" -* `Dockerfile` - to build our app into a container image. It will use a ruby - base image and run `server.rb` +Before creating and connecting your Kubernetes cluster to your GitLab project, +you have to set up your Google Cloud account. If you don't already have one, go +and create it at https://console.cloud.google.com. If you already have a +Google account that you use to access Gmail, etc., you can use it to sign in +the Google Cloud. -## Fork sample project on GitLab.com +1. Follow the steps as outlined in the ["Before you begin" section of the Kubernetes Engine docs](https://cloud.google.com/kubernetes-engine/docs/quickstart#before-you-begin) + in order for the required APIs and related services to be enabled. +1. Make sure you have created a [billing account](https://cloud.google.com/billing/docs/how-to/manage-billing-account). -Let’s start by forking our sample application. Go to [the project -page](https://gitlab.com/auto-devops-examples/minimal-ruby-app) and press the -**Fork** button. Soon you should have a project under your namespace with the -necessary files. +TIP: **Tip:** +Every new Google Cloud Platform (GCP) account receives [$300 in credit](https://console.cloud.google.com/freetrial), +and in partnership with Google, GitLab is able to offer an additional $200 for new GCP accounts to get started with GitLab's +Google Kubernetes Engine Integration. All you have to do is [follow this link](https://goo.gl/AaJzRW) and apply for credit. -You can also start a new project from a -[GitLab project template](https://gitlab.com/gitlab-org/project-templates) if -you want to use a different language. +## Creating a new project from a template -## Setup your own cluster on Google Kubernetes Engine +We will use one of GitLab's project templates to get started. AS the name suggests, +those projects provide a barebone of an application built on some well known frameworks. -If you do not already have a Google Cloud account, create one at -https://console.cloud.google.com. +1. Find the plus icon (**+**) at the top of the navigation bar, click it and select + **New project**. +1. Go to the **Create from template** tab where you can choose among a Ruby on + Rails, a Spring, or a NodeJS Express project. For the sake of the example + let's use the Ruby on Rails template. -Visit the [**Kubernetes Engine**](https://console.cloud.google.com/kubernetes/list) -tab and create a new cluster. You can change the name and leave the rest of the -default settings. Once you have your cluster running, you need to connect to the -cluster by following the Google interface. +  -## Connect to Kubernetes cluster +1. Give your project a name, optionally a description, and make it public so that + you can take advantage of the features available in the + [GitLab Gold plan](https://about.gitlab.com/pricing/#gitlab-com). -You need to have the Google Cloud SDK installed. e.g. -On macOS, install [homebrew](https://brew.sh): +  -1. Install Brew Caskroom: `brew install caskroom/cask/brew-cask` -2. Install Google Cloud SDK: `brew cask install google-cloud-sdk` -3. Add `kubectl` with: `gcloud components install kubectl` -4. Log in: `gcloud auth login` +1. Finally, click on the **Create project** button. -Now go back to the Google interface, find your cluster, follow the instructions -under "Connect to the cluster" and open the Kubernetes Dashboard. It will look -something like: +Now that the project is created, the next step is to create the Kubernetes cluster +under which this application will be deployed. -```sh -gcloud container clusters get-credentials ruby-autodeploy \ --zone europe-west2-c --project api-project-XXXXXXX -``` +## Creating a Kubernetes cluster -Finally, run `kubectl proxy`. +One thing you should notice after you created the project is the **Add Kubernetes cluster** +button on the project's landing page. Go ahead and click it. - + -## Copy credentials to GitLab.com project +TIP: **Tip:** +Another way is to navigate to **Operations > Kubernetes** and click on +**Add Kubernetes cluster**. -Once you have the Kubernetes Dashboard interface running, you should visit -**Secrets** under the "Config" section. There, you should find the settings we -need for GitLab integration: `ca.crt` and token. +From there on, let's see how to create a new Kubernetes cluster on GKE: - +1. Choose **Create on Google Kubernetes Engine**. -You need to copy-paste the `ca.crt` and token into your project on GitLab.com in -the Kubernetes integration page under project -**Settings > Integrations > Project services > Kubernetes**. Don't actually copy -the namespace though. Each project should have a unique namespace, and by leaving -it blank, GitLab will create one for you. +  - +1. Sign in with Google. -For the API URL, you should use the "Endpoint" IP from your cluster page on -Google Cloud Platform. +  -## Expose application to the world +1. Connect with your Google account and press **Allow** when asked (this will + be shown only the first time you connect GitLab with your Google account). -In order to be able to visit your application, you need to install an NGINX -ingress controller and point your domain name to its external IP address. Let's -see how that's done. +  -### Set up Ingress controller +1. The last step is to fill in the cluster details. Give it a name, leave the + environment scope as is, and choose the GCP project under which the cluster + will be created (if you followed the instructions when you + [configured your Google account](#configuring-your-google-account), a project + should have been created for you). Next, choose the + [region/zone](https://cloud.google.com/compute/docs/regions-zones/) under which the + cluster will be created, enter the number of nodes you want it to have, and + finally choose their [machine type](https://cloud.google.com/compute/docs/machine-types). -You’ll need to make sure you have an ingress controller. If you don’t have one, do: +  -```sh -brew install kubernetes-helm -helm init -helm install --name ruby-app stable/nginx-ingress -``` +1. Once ready, hit the **Create Kubernetes cluster** button. -This should create several services including `ruby-app-nginx-ingress-controller`. -You can list your services by running `kubectl get svc` to confirm that. +After a couple of minutes, the cluster will be created. You can also see its +status on your [GCP dashboard](https://console.cloud.google.com/kubernetes). -### Point DNS at Cluster IP +The next step is to install some applications on your cluster that are needed +to take full advantage of Auto DevOps. -Find out the external IP address of the `ruby-app-nginx-ingress-controller` by -running: +## Installing Helm, Ingress and Prometheus -```sh -kubectl get svc ruby-app-nginx-ingress-controller -o jsonpath='{.status.loadBalancer.ingress[0].ip}' -``` +GitLab's Kubernetes integration comes with some +[pre-defined applications](../../user/project/clusters/index.md#installing-applications) +for you to install. + + + +The first one to install is Helm Tiller, a package manager for Kubernetes, which +is needed in order to install the rest of the applications. Go ahead and click +its **Install** button. + +Once it's installed, the other applications that rely on it will have their **Install** +button enabled. For this guide, we need Ingress and Prometheus. Ingress provides +load balancing, SSL termination, and name-based virtual hosting, using NGINX behind +the scenes. Prometheus is an open-source monitoring and alerting system that we'll +use to supervise the deployed application. We will not install GitLab Runner as +we'll use the shared Runners that GitLab.com provides. + +After the Ingress is installed, wait a few seconds and copy the IP address that +will show up, we'll use in the next step when enabling Auto DevOps. + +## Enabling Auto DevOps + +Now that the Kubernetes cluster is set up and ready, let's enable Auto DevOps. + +1. First, navigate to **Settings > CI/CD > Auto DevOps**. + +1. Select **Enable Auto DevOps**. +1. Add in your base **Domain** by using the one GitLab suggests. Note that + generally, you would associate the IP address with a domain name on your + registrar's settings. In this case, for the sake of the guide, we will use + an alternative DNS that will map any domain name of the scheme + `anything.ip_address.nip.io` to the corresponding `ip_address`. For example, + if the IP address of the Ingress is `1.2.3.4`, the domain name to fill in + would be `1.2.3.4.nip.io`. +1. Lastly, let's select the [continuous deployment strategy](index.md#deployment-strategy) + which will automatically deploy the application to production once the pipeline + successfully runs on `master` branch. +1. Hit **Save changes** for the changes to take effect. + +  + +Once you complete all the above and save your changes, a new pipeline will be +automatically created. Go to **CI/CD > Pipelines** to check it out. + + + +In the next section we'll break down the pipeline and explain what each job does. + +## Deploying the application + +So, by now you should see the pipeline running, but what is it running exactly? + +To navigate inside the pipeline, click on its status badge (it should say running) +The pipeline is split into 4 stages, each running a couple of jobs. + + + +In the **build** stage, the application is built into a Docker image and then +uploaded to your project's [Container Registry](../../user/project/container_registry.md) ([Auto Build](index.md#auto-build)). + +In the **test** stage, GitLab runs various checks on the application: + +- The `test` job runs unit and integration tests by detecting the language and + framework ([Auto Test](index.md#auto-test)) +- The `code_quality` job checks the code quality and is allowed to fail + ([Auto Code Quality](index.md#auto-code-quality)) **[STARTER]** +- The `container_scanning` job checks the Docker container if it has any + vulnerabilities and is allowed to fail ([Auto Container Scanning](index.md#auto-container-scanning)) +- The `dependency_scanning` job checks if the application has any dependencies + susceptible to vulnerabilities and is allowed to fail ([Auto Dependency Scanning](index.md#auto-dependency-scanning)) **[ULTIMATE]** +- The `sast` job runs static analysis on the current code and checks for potential + security issues and is allowed to fail([Auto SAST](index.md#auto-sast)) **[ULTIMATE]** +- The `license_management` job searches the application's dependencies for their + license and is allowed to fail ([Auto License Management](index.md#auto-license-management)) **[ULTIMATE]** NOTE: **Note:** -If your ingress controller has been installed in a different way, you can find -how to get the external IP address in the -[Cluster documentation](../../user/project/clusters/index.md#getting-the-external-ip-address). +As you might have noticed, all jobs except `test` are allowed to fail in the +test stage. + +The **production** stage is run after the tests and checks finish, and it automatically +deploys the application in Kubernetes ([Auto Deploy](index.md#auto-deploy)). + +Lastly, in the **performance** stage, some performance tests will run +on the deployed application +([Auto Browser Performance Testing](index.md#auto-browser-performance-testing)). **[PREMIUM]** + +--- + +The URL for the deployed application can be found under the **Environments** +page where you can also monitor your application. Let's explore that. + +### Monitoring + +Now that the application is successfully deployed, let's navigate to its +website, by first going to **Operations > Environments**. + + + +This is the **Environments** where you can see some details about the deployed +applications. At the upper right or the production environment, you should see +some icons: + +- The first one will take you to the URL of the application that is deployed in + production. It's a very simple page, but the purpose is that it works! +- The next icon with the little graph will take you to the metrics page where + prometheus collects data about the Kubernetes cluster and how the application + affects it (in terms of memory/CPU usage, latency etc.). -Use this IP address to configure your DNS. This part heavily depends on your -preferences and domain provider. But in case you are not sure, just create an -A record with a wildcard host like `*.<your-domain>`. +  -Use `nslookup minimal-ruby-app-staging.<yourdomain>` to confirm that domain is -assigned to the cluster IP. +- The third icon is the [web terminal](../../ci/environments.md#web-terminals) + and it will open a terminal session right inside the container where the + application is running. -## Set up Auto DevOps +Right below, there is the +[Deploy Board](https://docs.gitlab.com/ee/user/project/deploy_boards.md). +The squares represent pods in your Kubernetes cluster that are associated with +the given environment. Hovering above each square you can see the state of a +deployment and clicking on the square will take you to the pod's logs page. -In your GitLab.com project, go to **Settings > CI/CD** and find the Auto DevOps -section. Select "Enable Auto DevOps", add in your base domain, and save. +TIP: **Tip:** +There is only one pod hosting the application at the moment, but you can add +more pods by defining the [`REPLICAS` variable](index.md#environment-variables) +under **Settings > CI/CD > Variables**. -Next, a pipeline needs to be triggered. Since the test project doesn't have a -`.gitlab-ci.yml`, you need to either push a change to the repository or -manually visit `https://gitlab.com/<username>/minimal-ruby-app/pipelines/new`, -where `<username>` is your username. +### Working with branches -This will create a new pipeline with several jobs: `build`, `test`, `code_quality`, -and `production`. The `build` job will create a Docker image with your new -change and push it to the Container Registry. The `test` job will test your -changes, whereas the `code_quality` job will run static analysis on your changes. -Finally, the `production` job will deploy your changes to a production application. +Following the [GitLab flow](../../workflow/gitlab_flow.md#working-with-feature-branches) +let's create a feature branch that will add some content to the application. -Once the deploy job succeeds you should be able to see your application by -visiting the Kubernetes dashboard. Select the namespace of your project, which -will look like `minimal-ruby-app-23`, but with a unique ID for your project, -and your app will be listed as "production" under the Deployment tab. +Under your repository, navigate to the following file: `app/views/welcome/index.html.erb`. +By now, it should only contain a paragraph: `<p>You're on Rails!</p>`, so let's +start adding content. Let's use GitLab's [Web IDE]() to make the change. Once +you're on the Web IDE, make the following change: -Once its ready, just visit `http://minimal-ruby-app.example.com` to see the -famous "Hello, world!"! +```html +<p>You're on Rails! Powered by GitLab Auto DevOps.</p> +``` + +Stage the file, add a commit message, and create a new branch and a merge request +by clicking **Commit**. + + + +Once you submit the merge request, you'll see the pipeline running. This will +run all the jobs as [described previously](#deploying-the-application), as well +a few more that run only on branches other than `master`. + + + +After a few minutes you'll realize that there was a failure in a test. +That means that there's a test that was broken when we made the change. +Navigating in the `test` job that failed, you can see what the broken test is: + +``` +Failure: +WelcomeControllerTest#test_should_get_index [/app/test/controllers/welcome_controller_test.rb:7]: +<You're on Rails!> expected but was +<You're on Rails! Powered by GitLab Auto DevOps.>.. +Expected 0 to be >= 1. + +bin/rails test test/controllers/welcome_controller_test.rb:4 +``` -[ce-37115]: https://gitlab.com/gitlab-org/gitlab-ce/issues/37115 +Let's fix that: + +1. Back to the merge request, click the **Web IDE** button. +1. Find the `test/controllers/welcome_controller_test.rb` file and open it. +1. Change line 7 to say `You're on Rails! Powered by GitLab Auto DevOps.` +1. Click **Commit**. +1. On your left, under "Unstaged changes", click the little checkmark icon + to stage the changes. +1. Write a commit message and hit **Commit** + +Now, if you go back to the merge request you should see not only the test passing, +but the application deployed as a [review app](index.md#auto-review-apps). You +can visit it by following the URL in the merge request. The changes that we +previously made should be there. + + + +Once you merge the merge request, the pipeline will run on the `master` branch, +and the application will be eventually deployed straight to production. + +## Conclusion + +By now, you should have gained a solid understanding of how Auto DevOps works. +We started from building and testing to deploying and monitoring an application +all within GitLab. In spite of its auto nature, this doesn't mean that you can't +configure and customize Auto DevOps to fit your workflow. Here are a few +interesting links: + +1. [Auto DevOps](index.md) +1. [Multiple Kubernetes clusters](index.md#using-multiple-kubernetes-clusters) **[PREMIUM]** +1. [Incremental rollout to production](index.md#incremental-rollout-to-production) **[PREMIUM]** +1. [Disable jobs you don't need with environment variables](index.md#environment-variables) +1. [Use a static IP for your cluster](../../user/project/clusters/index.md#using-a-static-ip) +1. [Use your own buildpacks to build your application](index.md#custom-buildpacks) +1. [Prometheus monitoring](../../user/project/integrations/prometheus.md) |
