1,创建一个chart 

[root@k8s-master ~]# helm create mychart
Creating mychart

2，删除默认文件

[root@k8s-master templates]# pwd
/root/mychart/templates
[root@k8s-master templates]# ls
deployment.yaml  _helpers.tpl  ingress.yaml  NOTES.txt  serviceaccount.yaml  service.yaml  tests
[root@k8s-master templates]# rm -rf *

3.新建测试文件

[root@k8s-master templates]# cat NOTES.txt 
hello

4，把项目文件deployment 和 service yaml 文件拷贝过来

[root@k8s-master templates]# cp /root/xiangmu/zhiyue.yaml .

5，安装新建的mychart

[root@k8s-master ~]# helm install zhiyueadmin mychart/
NAME: zhiyueadmin
LAST DEPLOYED: Sun May  3 22:57:45 2020
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
hello

 6，查看

[root@k8s-master templates]# helm list
NAME       	NAMESPACE	REVISION	UPDATED                               	STATUS  	CHART        	APP VERSION
zhiyueadmin	default  	1       	2020-05-03 22:57:45.79447501 +0800 CST	deployed	mychart-0.1.0	1.16.0     
[root@k8s-master templates]# kubectl get pods
NAME                                      READY   STATUS    RESTARTS   AGE
echowebvue-69467b45f7-svbqx               1/1     Running   0          4d1h
jenkins-fcc9d45fc-v97hx                   1/1     Running   0          4d12h
nfs-client-provisioner-75b84f8458-cjq28   1/1     Running   0          11d
zhiyueadmin-7bb864f5df-sp9zn              1/1     Running   0          8m33s

7，开始用变量文件，values.yaml，那么一套yaml 部署差异化的地方

a,资源名称     b，镜像地址       c, pv/pvc 目录位置    d,端口       e, 命名空间     f，标签     g，service端口，服务类型  h,副本数

[root@k8s-master ~]# cat mychart/values.yaml 
image: 10.1.1.11/library/zhiyueadmin
tag: 7
replicas: 2

8，让项目文件引用变量文件

[root@k8s-master xiangmu]# cat /root/mychart/templates/zhiyue.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  labels:
    app: zhiyueadmin
  name: zhiyueadmin
spec:
  replicas: {{ .Values.replicas }}
  selector:
    matchLabels:
      app: zhiyueadmin
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: zhiyueadmin

  
    spec:
      containers:
        - name: zhiyueadmin
          image: {{ .Values.image }}:{{ .Values.tag }}
          ports:
          - containerPort: 80
          resources:
            limits:
              cpu: 1
              memory: 2Gi
            requests:
              cpu: 0.5
              memory: 1Gi
          volumeMounts:
            - name: zhiyueadmin
              mountPath: /usr/share/nginx/html/
      volumes:
        - name: zhiyueadmin
          persistentVolumeClaim:
            claimName: zhiyueadmin-pvc
---

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: zhiyueadmin-pvc
spec:
  storageClassName: managed-nfs-storage 
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Gi

---
apiVersion: v1
kind: Service
metadata:
  name: zhiyueadmin
spec:
  type: NodePort
  selector:
    app: zhiyueadmin 
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80

---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: zhiyueadmin 
  namespace: default
spec:
  rules:
  - host: zhiyueadmin.rpdns.com
    http:
      paths:
      - path: /
        backend:
          serviceName: zhiyueadmin 
          servicePort: 80

9，安装

[root@k8s-master xiangmu]# helm install zhiyuemy /root/mychart/
NAME: zhiyuemy
LAST DEPLOYED: Sun May  3 23:43:21 2020
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
hello

10，查看

[root@k8s-master xiangmu]# kubectl get pods
NAME                                      READY   STATUS    RESTARTS   AGE
echowebvue-69467b45f7-svbqx               1/1     Running   0          4d2h
jenkins-fcc9d45fc-v97hx                   1/1     Running   0          4d12h
nfs-client-provisioner-75b84f8458-cjq28   1/1     Running   0          11d
zhiyueadmin-7bb864f5df-5dr97              1/1     Running   0          2m5s
zhiyueadmin-7bb864f5df-drw22              1/1     Running   0          2m5s

11，用helm 动态更新

[root@k8s-master xiangmu]# helm list
NAME       	NAMESPACE	REVISION	UPDATED                                	STATUS  	CHART        	APP VERSION
zhiyueadmin	default  	1       	2020-05-03 22:57:45.79447501 +0800 CST 	deployed	mychart-0.1.0	1.16.0     
zhiyuemy   	default  	1       	2020-05-03 23:43:21.088297068 +0800 CST	deployed	mychart-0.1.0	1.16.0     
[root@k8s-master xiangmu]# helm upgrade zhiyuemy --set replicas=3 /root/mychart/
Release "zhiyuemy" has been upgraded. Happy Helming!
NAME: zhiyuemy
LAST DEPLOYED: Sun May  3 23:48:13 2020
NAMESPACE: default
STATUS: deployed
REVISION: 2
TEST SUITE: None
NOTES:
hello

12，再次查看，可以看到副本数增加了

[root@k8s-master xiangmu]# kubectl get pods
NAME                                      READY   STATUS    RESTARTS   AGE
jenkins-fcc9d45fc-v97hx                   1/1     Running   0          4d12h
nfs-client-provisioner-75b84f8458-cjq28   1/1     Running   0          11d
zhiyueadmin-7bb864f5df-5dr97              1/1     Running   0          6m9s
zhiyueadmin-7bb864f5df-9spgt              1/1     Running   0          77s
zhiyueadmin-7bb864f5df-drw22              1/1     Running   0          6m9s

13，回滚到版本 1

[root@k8s-master xiangmu]# helm list
NAME       	NAMESPACE	REVISION	UPDATED                                	STATUS  	CHART        	APP VERSION
zhiyueadmin	default  	1       	2020-05-03 22:57:45.79447501 +0800 CST 	deployed	mychart-0.1.0	1.16.0     
zhiyuemy   	default  	2       	2020-05-03 23:48:13.651886259 +0800 CST	deployed	mychart-0.1.0	1.16.0     
[root@k8s-master xiangmu]# helm rollback zhiyuemy 1
Rollback was a success! Happy Helming!