KubeSphere DevOps System

What is KubeSphere DevOps System

KubeSphere DevOps System is designed for CI/CD workflows in Kubernetes. Based on Jenkins, it provides one-stop solutions to help both development and Ops teams build, test and publish apps to Kubernetes in a straight-forward way. It also features plugin management, Binary-to-Image (B2I), Source-to-Image (S2I), code dependency caching, code quality analysis, pipeline logging, etc.

The DevOps system offers an enabling environment for users as apps can be automatically released to the same platform. It is also compatible with third-party private image registries (e.g. Harbor) and code repositories (e.g. GitLab/GitHub/SVN/BitBucket). As such, it creates excellent user experiences by providing users with comprehensive, visualized CI/CD pipelines which are extremely useful in air-gapped environments.

For more information, see DevOps Administration.

Enable DevOps before Installation

Installing on Linux

When you install KubeSphere on Linux, you need to create a configuration file, which lists all KubeSphere components.

  1. In the tutorial of Installing KubeSphere on Linux, you create a default file config-sample.yaml. Modify the file by executing the following command:
  1. vi config-sample.yaml

Note

If you adopt All-in-one Installation, you do not need to create a config-sample.yaml file as you can create a cluster directly. Generally, the all-in-one mode is for users who are new to KubeSphere and look to get familiar with the system. If you want to enable DevOps in this mode (e.g. for testing purpose), refer to the following section to see how DevOps can be installed after installation.

  1. In this file, navigate to devops and change false to true for enabled. Save the file after you finish.
  1. devops:
  2.     enabled: true # Change "false" to "true"
  1. Create a cluster using the configuration file:
  1. ./kk create cluster -f config-sample.yaml

Installing on Kubernetes

When you install KubeSphere on Kubernetes, you need to download the file cluster-configuration.yaml for cluster setting. If you want to install DevOps, do not use kubectl apply -f directly for this file.

  1. In the tutorial of Installing KubeSphere on Kubernetes, you execute kubectl apply -f first for the file kubesphere-installer.yaml. After that, to enable DevOps, create a local file cluster-configuration.yaml.
  1. vi cluster-configuration.yaml
  1. Copy all the content in the file cluster-configuration.yaml and paste it to the local file just created.
  2. In this local cluster-configuration.yaml file, navigate to devops and enable DevOps by changing false to true for enabled. Save the file after you finish.
  1. devops:
  2.     enabled: true # Change "false" to "true"
  1. Execute the following command to start installation:
  1. kubectl apply -f cluster-configuration.yaml

Enable DevOps after Installation

  1. Log in the console as admin. Click Platform in the top-left corner and select Clusters Management.

clusters-management

  1. Click CRDs and enter clusterconfiguration in the search bar. Click the result to view its detailed page.

Info

A Custom Resource Definition (CRD) allows users to create a new type of resources without adding another API server. They can use these resources like any other native Kubernetes objects.

  1. In Resource List, click the three dots on the right of ks-installer and select Edit YAML.

edit-yaml

  1. In this yaml file, navigate to devops and change false to true for enabled. After you finish, click Update in the bottom-right corner to save the configuration.
  1. devops:
  2.     enabled: true # Change "false" to "true"
  1. You can use the web kubectl to check the installation process by executing the following command:
  1. kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f

Tip

You can find the web kubectl tool by clicking the hammer icon in the bottom-right corner of the console.

Verify the Installation of Component

Go to Components and check the status of DevOps. You may see an image as follows:

devops

Execute the following command to check the status of pods:

  1. kubectl get pod -n kubesphere-devops-system

The output may look as follows if the component runs successfully:

  1. NAME                                       READY   STATUS    RESTARTS   AGE
  2. ks-jenkins-68b8949bb-jcvkt                 1/1     Running   0          1h3m
  3. s2ioperator-0                              1/1     Running   1          1h3m
  4. uc-jenkins-update-center-8c898f44f-hqv78   1/1     Running   0          1h14m