阿里雲容器服務Kubernetes之Jenkins X（1）-安裝部署實踐篇
摘要： "Jenkins X is a CI/CD solution for modern cloud applications on Kubernetes." 這是Jenkins社群對於Jenkins X 的官方總結和定義。
本文的部署實踐過程參考了雲棲文章 如何在阿里雲容器服務上搭建Jenkins X並記錄了更詳細的過程及日誌輸出。
下面我們開始介紹如何在阿里雲容器服務Kubernetes上快速安裝部署Jenkins X。
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1. 首先，需要在 阿里雲容器服務控制檯 建立一個Kubernetes叢集，本次實踐使用的環境資訊如下：
master1 192.168.0.134 master2 192.168.0.135 master3 192.168.0.136 worker1 192.168.0.137
2. 登入worker1節點（也可以使用叢集外的任意ecs環境）並初始化helm client
# mkdir $HOME/.kube
# scp [email protected]:/etc/kubernetes/kube.conf $HOME/.kube/config
[email protected]'s password:
kube.conf 100% 5472 8.4MB/s 00:00
# scp # helm init --client-only Creating /root/.helm Creating /root/.helm/repository Creating /root/.helm/repository/cache Creating /root/.helm/repository/local Creating /root/.helm/plugins Creating /root/.helm/starters Creating /root/.helm/cache/archive Creating /root/.helm/repository/repositories.yaml Adding stable repo with URL: https://kubernetes-charts.storage.googleapis.com Adding local repo with URL: http://127.0.0.1:8879/charts $HELM_HOME has been configured at /root/.helm. Not installing Tiller due to 'client-only' flag having been set Happy Helming!
3. 安裝 git。
yum install git -y4. 安裝jx客戶端
# curl -L https://github.com/jenkins-x/jx/releases/download/v1.3.464/jx-linux-amd64.tar.gz | tar xzv
# mv jx /usr/local/bin# jx version
Using helmBinary helm with feature flag: none
NAME VERSION
jx 1.3.464
Kubernetes cluster v1.11.2
kubectl v1.11.2
helm client v2.9.1+g20adb27
helm server v2.9.1+g20adb27
git git version 1.8.3.1
A new jx version is available: 1.3.470
? Would you like to upgrade to the new jx version? No5. 下載 cloud-environments 雲環境配置檔案
# mkdir -p ~/.jx
# cd ~/.jx
# git clone https://github.com/haoshuwei/cloud-environments.git
正克隆到 'cloud-environments'...
remote: Enumerating objects: 526, done.
remote: Total 526 (delta 0), reused 0 (delta 0), pack-reused 526
接收物件中: 100% (526/526), 229.61 KiB | 261.00 KiB/s, done.
處理 delta 中: 100% (263/263), done.6. 安裝jenkins-x-platform到Kubernetes叢集
# jx install --provider=kubernetes --domain aliyunk8s.com
訪問日誌中提示的GitHub URL 並生成API Token:
https://github.com/settings/tokens/new?scopes=repo,read:user,read:org,user:email,write:repo_hook,delete_repo
新開啟一個終端視窗檢視jenkins-x-platform各個元件的安裝情況：
# kubectl get ing -n jx
NAME HOSTS ADDRESS PORTS AGE
chartmuseum chartmuseum.jx.aliyunk8s.com xx.xx.xxx.xxx 80 49s
docker-registry docker-registry.jx.aliyunk8s.com xx.xx.xxx.xxx 80 49s
jenkins jenkins.jx.aliyunk8s.com xx.xx.xxx.xxx 80 48s
monocular monocular.jx.aliyunk8s.com xx.xx.xxx.xxx 80 49s
nexus nexus.jx.aliyunk8s.com xx.xx.xxx.xxx 80 49s繫結hosts:
# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
xx.xx.xxx.xxx chartmuseum.jx.aliyunk8s.com
xx.xx.xxx.xxx docker-registry.jx.aliyunk8s.com
xx.xx.xxx.xxx jenkins.jx.aliyunk8s.com
xx.xx.xxx.xxx monocular.jx.aliyunk8s.com
xx.xx.xxx.xxx nexus.jx.aliyunk8s.com檢視jenkins-x-platform元件的安裝情況：
[[email protected] ~]# kubectl get pod -n jx
NAME READY STATUS RESTARTS AGE
jenkins-67d7cc5fcd-x6686 1/1 Running 0 8m
jenkins-x-chartmuseum-84b895f4c5-d2dgc 1/1 Running 0 8m
jenkins-x-docker-registry-6b6f6d67b6-kn9ml 1/1 Running 0 8m
jenkins-x-heapster-65fd697bb-4czvz 2/2 Running 0 8m
jenkins-x-mongodb-784f66c466-zz429 0/1 Pending 0 8m
jenkins-x-monocular-api-58796c57c9-xk8rs 0/1 CrashLoopBackOff 5 8m
jenkins-x-monocular-prerender-5848c74fdc-48ppm 1/1 Running 0 8m
jenkins-x-monocular-ui-c4467bdc5-ttbr6 1/1 Running 0 8m
jenkins-x-nexus-b7454965d-nvlqb 1/1 Running 0 8m
pipelinecontroller-6b5b8d9f47-457xx 1/1 Running 0 8m發現jenkins-x-mongodb和jenkins-x-monocular-api元件啟動異常，這是因為jenkins-x-monocular-api依賴jenkins-x-mongodb， 而jenkins-x-mongodb在建立pvc資源時找不到default storage class而導致的；編輯mongodb-pvc.yaml建立新pvc：
# cat mongodb-pvc.yaml
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: jenkins-x-mongodb
namespace: jx
spec:
accessModes:
- ReadWriteOnce
storageClassName: alicloud-disk-available
resources:
requests:
storage: 20Gi # kubectl get pvc -n jx
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
jenkins Bound d-j6c8mnao06oovpk0vy4h 30Gi RWO alicloud-disk-available 18m
jenkins-x-chartmuseum Bound d-j6c9szfy8smf4ak05hm9 20Gi RWO alicloud-disk-available 18m
jenkins-x-docker-registry Bound d-j6cc913ulnzfa7drkru9 100Gi RWO alicloud-disk-available 18m
jenkins-x-mongodb Pending 18m
jenkins-x-nexus Bound d-j6cfrymuj8lrj2pvz3v0 20Gi RWO alicloud-disk-available 18m# kubectl delete pvc jenkins-x-mongodb -n jx
persistentvolumeclaim "jenkins-x-mongodb" deleted# kubectl create -f mongodb-pvc.yaml
persistentvolumeclaim/jenkins-x-mongodb created# kubectl delete pods jenkins-x-mongodb-784f66c466-zz429 -n jx
pod "jenkins-x-mongodb-784f66c466-zz429" deleted
# kubectl delete pods jenkins-x-monocular-api-58796c57c9-xk8rs -n jx
pod "jenkins-x-monocular-api-58796c57c9-xk8rs" deleted全部元件執行正常後可以看到jenkins-x-platform的安裝程序進入下一步jenkins CLI API Token的配置：
根據提示獲取token填入後， 安裝部署完成：
7. 檢視ingress暴露出來的服務url
# jx get urls
Name URL
jenkins http://jenkins.jx.aliyunk8s.com
jenkins-x-chartmuseum http://chartmuseum.jx.aliyunk8s.com
jenkins-x-docker-registry http://docker-registry.jx.aliyunk8s.com
jenkins-x-monocular-api http://monocular.jx.aliyunk8s.com
jenkins-x-monocular-ui http://monocular.jx.aliyunk8s.com
nexus http://nexus.jx.aliyunk8s.com訪問http://jenkins.jx.aliyunk8s.com：
訪問http://monocular.jx.aliyunk8s.com：
訪問http://nexus.jx.aliyunk8s.com：
docker-registry服務的訪問有問題（暫時未花過多時間除錯）， 但我們會在下一篇中演示如何讓jenkins x使用阿里雲容器映象服務來管理容器映象；下一篇文章也會使用jenkins x建立一個spring應用並演示如何使用GitOps的理念管理和釋出一個雲原生應用。
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