{"id":2100,"date":"2022-02-11T17:58:31","date_gmt":"2022-02-11T17:58:31","guid":{"rendered":"https:\/\/blog.samarthya.me\/wps\/?p=2100"},"modified":"2022-02-23T08:57:31","modified_gmt":"2022-02-23T08:57:31","slug":"kaniko-jenkins-pipeline","status":"publish","type":"post","link":"https:\/\/blog.samarthya.me\/wps\/2022\/02\/11\/kaniko-jenkins-pipeline\/","title":{"rendered":"Kaniko: Jenkins Pipeline"},"content":{"rendered":"\n

So there are many things I have been simultaneously trying to learn & one of those is to learn how you can configure a pipeline<\/p>\n\n\n\n

Read more about Pipeline as Code (PaC)<\/p><\/blockquote><\/figure>\n\n\n\n

Objectives<\/h2>\n\n\n\n
  1. Learn Jenkins deployment on Kubernetes<\/li>
  2. Learn Jenkins Kubernetes Plugin<\/li>
  3. Learn Jenkins Pipeline (Declarative<\/code>)<\/li>
  4. How to build and deploy images in Kubernetes cluster<\/li><\/ol>\n\n\n\n

    All right, with so many monkeys on my back I had to do things the way I know it works for me.<\/p>\n\n\n\n

    k8s cluster setup<\/h2>\n\n\n\n

    I have a local cluster v1.23.1<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    Jenkins Setup<\/h2>\n\n\n\n

    I have already covered steps to deploy a Jenkins<\/code> instance here<\/a>. A detailed list of all entities in the namespace jenkins<\/code> are below<\/p>\n\n\n\n

    root@master>k get pods,services,pv,pvc,sa,serviceaccount,rolebinding -n jenkins\nNAME              READY   STATUS    RESTARTS      AGE\npod\/myjenkins-0   2\/2     Running   18 (8h ago)   9d\n\nNAME                      TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)     AGE\nservice\/myjenkins         ClusterIP   10.103.226.229   <none>        8080\/TCP    9d\nservice\/myjenkins-agent   ClusterIP   10.105.132.66    <none>        50000\/TCP   9d\n\nNAME                                              CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS     CLAIM                                     STORAGECLASS   REASON   AGE\npersistentvolume\/dx-restmon-restmon--default-pv   1Gi        RWO            Retain           Bound      default\/dx-restmon-restmon--default-pvc                           71d\npersistentvolume\/jenkins-pv                       8Gi        RWO            Retain           Bound      jenkins\/myjenkins                                                 9d\npersistentvolume\/kafka-pv                         8Gi        RWO            Retain           Bound      default\/data-my-release-zookeeper-0                               3h36m\npersistentvolume\/prometheus-alertmanager          2Gi        RWO            Retain           Released   default\/prometheus-alertmanager                                   88d\npersistentvolume\/prometheus-server                8Gi        RWO            Retain           Released   default\/prometheus-server                                         88d\npersistentvolume\/zookeper-pv                      8Gi        RWO            Retain           Bound      default\/data-my-release-kafka-0                                   3h34m\n\nNAME                              STATUS   VOLUME       CAPACITY   ACCESS MODES   STORAGECLASS   AGE\npersistentvolumeclaim\/myjenkins   Bound    jenkins-pv   8Gi        RWO                           9d\n\nNAME                       SECRETS   AGE\nserviceaccount\/default     1         9d\nserviceaccount\/myjenkins   1         9d\n\nNAME                                                               ROLE                             AGE\nrolebinding.rbac.authorization.k8s.io\/jenkins-admin-binding        ClusterRole\/admin                2d\nrolebinding.rbac.authorization.k8s.io\/myjenkins-schedule-agents    Role\/myjenkins-schedule-agents   9d\nrolebinding.rbac.authorization.k8s.io\/myjenkins-watch-configmaps   Role\/myjenkins-casc-reload       9d<\/code><\/pre>\n\n\n\n
    Official documentation is very detailed<\/a><\/p>https:\/\/www.jenkins.io\/doc\/book\/installing\/kubernetes\/<\/cite><\/blockquote><\/figure>\n\n\n\n
    Plugin Kubernetes<\/h2>\n\n\n\n
    Configuring Kubernetes plugin was easier than I thought in Jenkins.<\/p>\n\n\n\n
    Kubernetes Plugin<\/a><\/p>https:\/\/plugins.jenkins.io\/kubernetes\/<\/cite><\/blockquote><\/figure>\n\n\n\n
    \"\"
    Plugin Kubernetes<\/figcaption><\/figure>\n\n\n\n
    Once plugin is installed time to configure the plugin & nodes<\/p>\n\n\n\n
    \"\"<\/figure><\/div>\n\n\n\n
    Click the configure clouds<\/p>\n\n\n\n
    \"\"<\/figure><\/div>\n\n\n\n
    Server URL<\/h3>\n\n\n\n
    root@master>kubectl config view --minify | grep server\n    server: https:\/\/10.80.241.78:6443<\/code><\/pre>\n\n\n\n
    Supply the values of the cluster information set-up the credentials (I named them jenkins<\/code>) and click test connection<\/p>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    In Jenkins create a Secret Text<\/em> credentials and paste the decoded<\/strong> value of the ServiceAccount token.<\/p>\n\n\n\n
    kubectl get secret $(kubectl get sa myjenkins -n jenkins -o jsonpath={.secrets[0].name}) -n jenkins -o jsonpath={.data.token} | base64 --decode<\/code><\/pre>\n\n\n\n
    You can also retrieve server cert by using the command below<\/p>\n\n\n\n
    kubectl get secret $(kubectl get sa myjenkins -n jenkins -o jsonpath={.secrets[0].name}) -n jenkins -o jsonpath={.data.'ca\\.crt'} | base64 --decode<\/code><\/pre>\n\n\n\n
    My source code is posted here (Git HUB)<\/a><\/p>\n\n\n\n
    Two out of 4 objectives are done, time to create a pipeline.<\/p>\n\n\n\n
    Please refer to the usage section of the plugin<\/a>.<\/p><\/blockquote><\/figure>\n\n\n\n
    The Kubernetes plugin allocates Jenkins agents in Kubernetes pods. <\/p>Plugin Kubernetes<\/cite><\/blockquote><\/figure>\n\n\n\n
    Points to remember<\/h2>\n\n\n\n