Helm 部署删除升级回退 k8s 应用

1.Chart包仓库

# 查看当前仓库
$ helm repo list 
NAME          	URL                                                   
local         	http://192.168.10.100:8879/charts

# 增加仓库
$ helm repo add stable https://kubernetes.oss-cn-hangzhou.aliyuncs.com/charts
$ helm repo list 
NAME          	URL                                                   
local         	http://192.168.10.100:8879/charts                      
stable        	https://kubernetes.oss-cn-hangzhou.aliyuncs.com/charts

2.搜索仓库应用

# 搜索 wordpress 应用
$ helm search wordpress
NAME            	CHART VERSION	APP VERSION	DESCRIPTION                                             
stable/wordpress	0.8.8        	4.9.4      	Web publishing platform for building blogs and websites.

# 搜索 jenkins 应用
$ helm search jenkins
NAME          	CHART VERSION	APP VERSION	DESCRIPTION                                                 
local/jenkins 	0.13.5       	2.73       	Open source continuous integration server. It supports mu...
stable/jenkins	0.13.5       	2.73       	Open source continuous integration server. It supports mu...

3.查看应用部署手册信息

$ helm inspect stable/wordpress
$ helm inspect stable/jenkins

3.Helm部署应用

# 部署 wordpress 应用
$ helm install --name linxuhub-blog stable/wordpress

# 部署 jenkins 应用
$ helm install --name linxuhub-jenkins stable/jenkins

4.列出已部署的应用

$ helm list
NAME            	REVISION	UPDATED                 	STATUS  	CHART                 	APP VERSION	NAMESPACE
linxuhub-blog       1       	Fri Dec  7 16:58:40 2018	DEPLOYED	wordpress-0.8.8       	4.9.4      	default   
linxuhub-jenkins	1       	Mon Mar 18 11:30:18 2019	DEPLOYED	jenkins-0.13.5        	2.73       	default

4.查看应用状态

$ helm status linuxhub-blog 
$ helm status linuxhub-jenkins

kubectl查看应用状态

$ kubectl get svc | grep linuxhub
linuxhub-blog-mariadb                  ClusterIP      10.254.61.95     <none>        3306/TCP         100d
linuxhub-blog-wordpress                ClusterIP      10.254.157.64    <none>        80/TCP,443/TCP   100d
linuxhub-jenkins              LoadBalancer   10.254.146.104   <none>     8080:16111/TCP   7m
linuxhub-jenkins-agent        ClusterIP      10.254.103.25    <none>        50000/TCP        7m

5.删除应用

# 删除应用版本
$  helm delete linuxhub-jenkins
release "linuxhub-jenkins" deleted

# 列出已删除的应用版本
$  helm ls --deleted
NAME            	REVISION	UPDATED                 	STATUS 	CHART           	APP VERSION	NAMESPACE
linuxhub-jenkins	1       	Mon Mar 18 11:30:18 2019	DELETED	jenkins-0.13.5  	2.73       	default

默认情况下已经删除的 Release 只是将状态标识为 DELETE 了 ，但该 Release 的历史信息还是继续被保存的。

$ helm hist linuxhub-jenkins
REVISION	UPDATED                 	STATUS 	CHART         	DESCRIPTION      
1       	Mon Mar 18 11:30:18 2019	DELETED	jenkins-0.13.5	Deletion complete

$ helm hist blog
REVISION	UPDATED                 	STATUS  	CHART          	DESCRIPTION     
1       	Fri Dec  7 16:58:40 2018	DEPLOYED	wordpress-0.8.8	Install complete

如果要移除指定 Release 所有相关的 Kubernetes 资源和 Release 的历史记录，可以用如下命令：

$ helm delete --purge linuxhub-jenkins
release "linuxhub-jenkins" deleted

# 已经没要相关记录信息了
$ helm hist linuxhub-jenkins
Error: release: "linuxhub-jenkins" not found

# helm ls 命令也已均无查询记录
$ helm ls --deleted
$ helm ls -a linuxhub-jenkins

6.下载远程仓库应用到本地

#下载远程仓库jenkins应用到本地
$ helm fetch stable/jenkins
$ ls
jenkins-0.13.5.tgz

7.打包应用

#解压下载的Chart包应用
$ tar xvf jenkins-0.13.5.tgz

# 编辑应用，例如修改下版本号
$ vim jenkins/Chart.yaml
version: 0.13.6-linuxhub

# 打包应用
$ helm package jenkins --debug
Successfully packaged chart and saved it to: /home/k8s/linxuhub/jenkins-0.13.6-linuxhub.tgz
[debug] Successfully saved /home/k8s/linxuhub/jenkins-0.13.6-linuxhub.tgz to /data/helm/repository/loca

8.安装本地应用

# 从本地仓库安装
$  helm search local/jenkins
NAME         	CHART VERSION  	APP VERSION	DESCRIPTION                                                 
local/jenkins	0.13.6-linuxhub	2.73       	Open source continuous integration server. It supports mu...

# 指定本地文件Chart包安装
$ helm --name zeze-jenkins install /home/k8s/linxuhub/jenkins-0.13.6-linuxhub.tgz

6.升级应用版本

# 升级前版本 (jenkins-0.13.6-linuxhub)
$  helm list zeze-jenkins
NAME        	REVISION	UPDATED                 	STATUS  	CHART                  	APP VERSION	NAMESPACE
zeze-jenkins	1       	Mon Mar 18 12:03:29 2019	DEPLOYED	jenkins-0.13.6-linuxhub	2.73       	default 

# 升级版本 (jenkins-0.13.7)
$ helm upgrade zeze-jenkins /home/k8s/linxuhub/jenkins-0.13.7.tgz
Release "zeze-jenkins" has been upgraded. Happy Helming!

# 升级后版本 (jenkins-0.13.7)
$  helm list zeze-jenkins
NAME        	REVISION	UPDATED                 	STATUS  	CHART         	APP VERSION	NAMESPACE
zeze-jenkins	2       	Mon Mar 18 12:10:52 2019	DEPLOYED	jenkins-0.13.7	2.73       	default

7.回退应用版本

# 回退前版本(jenkins-0.13.7)
$ helm list zeze-jenkins
NAME        	REVISION	UPDATED                 	STATUS  	CHART         	APP VERSION	NAMESPACE
zeze-jenkins	2       	Mon Mar 18 12:10:52 2019	DEPLOYED	jenkins-0.13.7	2.73       	default 

# 列出历史版本
$ helm history zeze-jenkins
REVISION	UPDATED                 	STATUS    	CHART                  	DESCRIPTION     
1       	Mon Mar 18 12:03:29 2019	SUPERSEDED	jenkins-0.13.6-linuxhub	Install complete
2       	Mon Mar 18 12:10:52 2019	DEPLOYED  	jenkins-0.13.7         	Upgrade complete

# 回退上一个版本
$ helm rollback zeze-jenkins 1
Rollback was a success! Happy Helming!

#　回退后的版本(jenkins-0.13.6-linuxhub)
$ helm list zeze-jenkins
NAME        	REVISION	UPDATED                 	STATUS  	CHART                  	APP VERSION	NAMESPACE
zeze-jenkins	3       	Mon Mar 18 12:16:06 2019	DEPLOYED	jenkins-0.13.6-linuxhub	2.73       	default