1 Chart 目录结构
[root@master ~]# helm pull stable/mysql
[root@master ~]# tar xf mysql-1.6.8.tgz
[root@master ~]# ls mysql
Chart.yaml README.md templates values.yaml
[root@master ~]# ls -l mysql/templates/
total 48
-rwxr-xr-x 1 root root 292 Jan 1 1970 configurationFiles-configmap.yaml
-rwxr-xr-x 1 root root 8930 Jan 1 1970 deployment.yaml
-rwxr-xr-x 1 root root 1290 Jan 1 1970 _helpers.tpl
-rwxr-xr-x 1 root root 295 Jan 1 1970 initializationFiles-configmap.yaml
-rwxr-xr-x 1 root root 2036 Jan 1 1970 NOTES.txt
-rwxr-xr-x 1 root root 868 Jan 1 1970 pvc.yaml
-rwxr-xr-x 1 root root 1475 Jan 1 1970 secrets.yaml
-rwxr-xr-x 1 root root 328 Jan 1 1970 serviceaccount.yaml
-rwxr-xr-x 1 root root 800 Jan 1 1970 servicemonitor.yaml
-rwxr-xr-x 1 root root 1231 Jan 1 1970 svc.yaml
drwxr-xr-x 2 root root 50 Nov 13 18:43 tests
文件 | 说明 |
|---|
Chart.yaml | 用于描述Chart的基本信息; helm show chart stable/mysql命令查看的内容就是此文件内容 |
values.yaml | Chart的默认配置文件; helm show values stable/mysql命令查看的内容就是此文件内容 |
README.md | [可选] 当前Chart的介绍 |
LICENS | [可选] 协议 |
requirements.yaml | [可选] 用于存放当前Chart依赖的其它Chart的说明文件 |
charts/ | [可选]: 该目录中放置当前Chart依赖的其它Chart |
templates/ | [可选]: 部署文件模版目录 |
2 创建不可配置的chart
2.1 创建目录与chart.yaml
[root@k8s-master01 ~]# mkdir -p /helm/nginx/templates
[root@k8s-master01 ~]# cd /helm/nginx
2.2 创建deployment.yaml
[root@k8s-master01 nginx]# vim templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: helm-nginx
spec:
replicas: 1
selector:
matchLabels:
app: helm-nginx
template:
metadata:
labels:
app: helm-nginx
spec:
containers:
- name: c1
image: nginx:1.15-alpine
imagePullPolicy: IfNotPresent
2.3 创建service.yaml
[root@k8s-master01 nginx]# vim templates/service.yaml
apiVersion: v1
kind: Service
metadata:
name: helm-nginx
spec:
selector:
app: helm-nginx
ports:
- port: 80
targetPort: 80
protocol: TCP
2.4 使用chart安装应用
[root@k8s-master01 nginx]# helm install /helm/nginx --generate-name
NAME: nginx-1659144826
LAST DEPLOYED: Sat Jul 30 09:33:46 2022
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
2.5 查看与验证
[root@k8s-master01 nginx]# helm ls
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
nginx-1659144826 default 1 2022-07-30 09:33:46.881083524 +0800 CST deployed helm-nginx-1.0.0
[root@k8s-master01 nginx]# kubectl get pods,service
NAME READY STATUS RESTARTS AGE
pod/helm-nginx-65f57fb758-nrpvf 1/1 Running 0 51s
pod/nfs-client-provisioner-9d46587b5-7n2vf 1/1 Running 4 (31m ago) 42h
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/helm-nginx ClusterIP 10.96.2.120 <none> 80/TCP 51s
[root@k8s-master01 nginx]# curl http://10.96.2.120
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
2.5 删除
[root@k8s-master01 ~]# helm uninstall nginx-1659144826
release "nginx-1659144826" uninstalled
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