鄭毓融 23 October 2017 CI/CD with Kubernetes
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鄭毓融23 October 2017
CI/CD with Kubernetes
AgendaIntroduction of Continuous Integration and Continuous Deployment/Delivery
- What is CI/CD?- Run CI/CD with Kubernetes?
Setup Jenkins with Kubernetes- Setup minikube & jenkins- Add kubernetes in jenkins- Test
Summary
2
Introduction of Continuous Integration and Continuous Delivery (CI/CD)
What is CI/CD and Why need that?
Continuous Integration -
「 持續整合 」 目的在儘快讓新功能的程式碼整合到現存的基礎程式庫 (codebase) 中來進行測試 。
Continuous Deploy -
「 持續部署 」 的目的就是要讓軟體可以快速自動部署到不同的環境 ， 至於有多少環境需要部署則會根據不同公司的持續交付管線 (pipeline) 的設計而定。
Continuous Delivery -
「 持續交付 」 是將新的特性儘快交付到最終使用者 (end-user) 的手中 。
簡單來說就是盡量減少手動人力，將一些日常工作交給自動化工具。例如：環境建置、單元測試、日誌紀錄、產品部署。
What is CI/CD?
引用自:山姆鍋對持續整合、持續部署、持續交付的定義DevOps：持續整合＆持續交付（Docker、CircleCI、AWS）
CI/CD 流程範例
引用自: 安德魯的部落格 - 架構師觀點：你需要什麼樣的CI/CD?
Run CI/CD with Kubernetes
引用自: Achieving CI/CD with Kubernetes
Jenkins 透過 Kubernetes plugin 操作 kubernetes cluster 建立 pod (slaves) 來執行 CI/CD 任務。
Pod 上使用 jenkins/jnlp-slave image，啟動 jnlp java slave 程式，連接 jenkins master。
當完成 CI/CD 任務後，該 pod 自動從 kubernetes cluster 中刪除，釋放資源。
Setup Jenkins with Kubernetes
Use kubernetes-plugin in jenkins
Setup Environment (Minikube)
Host Machine
Virtual Machine (Minikube)
Docker Container (Jenkins Master)
Kubernetes Pod (Jenkins Slave)Kubernetes Pod (Jenkins Slave)
Kubernetes Pod (Jenkins Slave)Kubernetes Pod (Jenkins Slave)
Install minikuberoot@ycheng:/home/ycheng# curl -L https://github.com/dhiltgen/docker-machine-kvm/releases/download/v0.10.0/docker-machine-driver-kvm-ubuntu16.04 > /usr/local/bin/docker-machine-driver-kvmroot@ycheng:/home/ycheng# curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.22.0/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/
root@ycheng:/home/ycheng# curl -O "https://storage.googleapis.com/kubernetes-release/release/v1.7.8/bin/linux/amd64/kubectl"root@ycheng:/home/ycheng# chmod +x kubectl && sudo mv kubectl /usr/local/bin/
root@ycheng:/home/ycheng# minikube start --vm-driver=kvmStarting local Kubernetes v1.7.5 cluster...Starting VM...Getting VM IP address...Moving files into cluster...Setting up certs...Connecting to cluster...Setting up kubeconfig...Starting cluster components...Kubectl is now configured to use the cluster.
Run jenkins dockerroot@ycheng:/home/ycheng# minikube ssh _ _ _ _ ( ) ( ) ___ ___ (_) ___ (_)| |/') _ _ | |_ __ /' _ ` _ `\| |/' _ `\| || , < ( ) ( )| '_`\ /'__`\| ( ) ( ) || || ( ) || || |\`\ | (_) || |_) )( ___/(_) (_) (_)(_)(_) (_)(_)(_) (_)`\___/'(_,__/'`\____)
$ pwd/home/docker$ mkdir /home/docker/jenkins_home$ chmod 777 /home/docker/jenkins_home$ mkdir /home/docker/jenkins_volume$ chmod 777 /home/docker/jenkins_volume$ docker create --name jenkins-k8s jenkins:2.60.3Unable to find image 'jenkins:2.60.3' locally2.60.3: Pulling from library/jenkins3e17c6eae66c: Pull complete ….Status: Downloaded newer image for jenkins:2.60.36f8aef4da1a9ba669e7630ef5deac86c7e15d992ba9a592ff8dca251c4c2c611
Run jenkins docker$ docker run -d --volumes-from jenkins-k8s -p 8080:8080 -p 50000:50000 -v /home/docker/jenkins_home:/var/jenkins_home jenkins:2.60.39107e83bc474e7160fda33c9a52888228ece1e6ad6dd810fca3ac36493b14311$ docker logs 9107e83bc474e7160fda33c9a52888228ece1e6ad6dd810fca3ac36493b14311Running from: /usr/share/jenkins/jenkins.warwebroot: EnvVars.masterEnvVars.get("JENKINS_HOME")….Jenkins initial setup is required. An admin user has been created and a password generated.Please use the following password to proceed to installation:
2e058590dded40e5b3d7996246cf3be2
This may also be found at: /var/jenkins_home/secrets/initialAdminPassword
***************************************************************************************************************************************************************************************….--> setting agent port for jnlp--> setting agent port for jnlp... done
Enter jenkins web console
Install suggested plugins
Install suggested plugins
Create admin user
Start using jenkins
Jenkins web UI
Add kubernetes-plugin
Add kubernetes-plugin
Add kubernetes-plugin
Add kubernetes-plugin
Config kubernetes in jenkins
Add kubernetes in jenkins (minikube)
Add kubernetes in jenkins (minikube)root@ycheng:/home/ycheng# cat /root/.kube/config apiVersion: v1clusters:- cluster: certificate-authority: /root/.minikube/ca.crt server: https://192.168.42.102:8443 name: minikubecontexts:- context: cluster: minikube user: minikube name: minikubecurrent-context: minikubekind: Configpreferences: {}users:- name: minikube user: client-certificate: /root/.minikube/apiserver.crt client-key: /root/.minikube/apiserver.key
Add kubernetes in jenkins (minikube)root@ycheng:/home/ycheng# cat /root/.minikube/ca.crt-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
Add kubernetes in jenkins (minikube)root@ycheng:~# openssl pkcs12 -export -out ~/.minikube/minikube.pfx -inkey ~/.minikube/apiserver.key -in ~/.minikube/apiserver.crt -certfile ~/.minikube/ca.crt -passout pass:secret
root@ycheng:~# cp -afpR ~/.minikube/minikube.pfx ~root@ycheng:~# ls -l ./minikube.pfx -rw-r--r-- 1 root root 3293 10月 17 14:41 ./minikube.pfx
Add kubernetes in jenkins (minikube)
Add kubernetes in jenkins (minikube)
Add kubernetes in jenkins (minikube)
Add kubernetes in jenkins (minikube)
Create a project
Config project label
Add shell command to test
Run the project
Run the project
Run the project
Run the project
Run the project
Check output
Check outputroot@ycheng:~# minikube ssh _ _ _ _ ( ) ( ) ___ ___ (_) ___ (_)| |/') _ _ | |_ __ /' _ ` _ `\| |/' _ `\| || , < ( ) ( )| '_`\ /'__`\| ( ) ( ) || || ( ) || || |\`\ | (_) || |_) )( ___/(_) (_) (_)(_)(_) (_)(_)(_) (_)`\___/'(_,__/'`\____)
$ ls -l ./jenkins_volume/total 4-rw-r--r-- 1 10000 10000 48 Oct 17 09:14 output$ cat ./jenkins_volume/output Tue Oct 17 09:14:39 UTC 2017free-job-test-done
Add another kubernetes cluster (2+1)
Host Machine
Virtual Machine (Minikube)
Docker Container (Jenkins Master)
Virtual Machine (Kubernetes node1 - master)
Virtual Machine (Kubernetes node2 - minion)
Virtual Machine (Kubernetes node3 - minion)
kubernetes cluster 2+1root@ycheng:~# virsh list Id Name State---------------------------------------------------- 33 minikube running 34 kubernetes_node1 running 35 kubernetes_node2 running 36 kubernetes_node3 running
root@node1:~# kubectl get node -o wideNAME STATUS AGE VERSION EXTERNAL-IP OS-IMAGE KERNEL-VERSIONnode1 Ready,master 161d v1.6.2 <none> Ubuntu 16.04.2 LTS 4.4.0-62-genericnode2 Ready 161d v1.6.2 <none> Ubuntu 16.04.2 LTS 4.4.0-62-genericnode3 Ready 161d v1.6.2 <none> Ubuntu 16.04.2 LTS 4.4.0-62-generic
root@node1:~# kubectl create ns jenkinsnamespace "jenkins" created
root@node1:~# showmount -e 192.168.2.254Export list for 192.168.2.254:/root/jenkins_output *
Test script and data on NFS serverroot@ycheng:~/jenkins_output# ls -ltotal 4drwxrwxrwx 3 ycheng ycheng 4096 10月 19 17:36 iostat_analyzer_for_jenkins
root@ycheng:~/jenkins_output# ls -l ./iostat_analyzer_for_jenkins/total 40-rwxrwxr-x 1 ycheng ycheng 527 10月 19 17:19 combine_iostat_files.sh-rwxrwxrwx 1 ycheng ycheng 13542 10月 19 17:19 iostat_analysis_io_req.sh-rwxrwxr-x 1 ycheng ycheng 10079 10月 19 11:15 split_by_day.shdrwxrwxrwx 2 ycheng ycheng 4096 10月 19 17:38 rawdata
Config kubernetes cluster
Config kubernetes cluster
Config kubernetes cluster
Create pipeline job
Write pipeline script
Run pipeline job
pipeline stage
pipeline stage
pipeline stage
Terminal output
Terminal output
Summary
Summary
Continuous IntegrationContinuous DeployContinuous DeliveryCI/CD with Kubernetes
Other CI/CD Tools :- Travis CI- Circle CI- Drone.io- gitlab- & more...
References
https://samkuo.me/post/2013/10/continuous-integration-deployment-delivery/http://blog.amowu.com/2015/04/devops-continuous-integration-delivery-docker-circleci-aws-beanstalk.htmlhttp://columns.chicken-house.net/2017/08/05/what-cicd-do-you-need/https://docs.docker.com/samples/library/jenkins/https://travis-ci.org/http://try.drone.io/https://dzone.com/articles/achieving-cicd-with-kubernetes
www.inwinstack.com
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