一、安装

仓库

1.1 安装argo-rollouts

  1. 创建命名空间
1
kubectl create namespace argo-rollouts
  1. 下载 yaml 文件
1
wget -O argo_rollouts_v1.9.0_install.yaml https://github.com/argoproj/argo-rollouts/releases/download/v1.9.0/install.yaml

​ 代理

1
wget -O argo_rollouts_v1.9.0_install.yaml https://g.bravexist.cn/https://github.com/argoproj/argo-rollouts/releases/download/v1.9.0/install.yaml
  1. 创建资源
1
kubectl apply -n argo-rollouts -f argo_rollouts_v1.9.0_install.yaml
  1. 验证
1
kubectl get all -n argo-rollouts

1.2 安装Kubectl 插件

  1. 下载
1
wget https://github.com/argoproj/argo-rollouts/releases/download/v1.9.0/kubectl-argo-rollouts-linux-amd64

​ 代理

1
wget https://g.bravexist.cn/https://github.com/argoproj/argo-rollouts/releases/download/v1.9.0/kubectl-argo-rollouts-linux-amd64
  1. 移动
1
mv kubectl-argo-rollouts-linux-amd64 /usr/local/bin/kubectl-argo-rollouts
  1. 添加可执行权限
1
chmod u+x /usr/local/bin/kubectl-argo-rollouts
  1. 验证
1
kubectl argo rollouts version

1.3 安装dashboard插件

  1. 下载资源清单
1
wget -O argo_rollouts_dashboard_v1.9.0_install.yaml https://github.com/argoproj/argo-rollouts/releases/download/v1.9.0/dashboard-install.yaml

​ 代理

1
wget -O argo_rollouts_dashboard_v1.9.0_install.yaml https://g.bravexist.cn/https://github.com/argoproj/argo-rollouts/releases/download/v1.9.0/dashboard-install.yaml
  1. 创建资源
1
kubectl apply -f argo_rollouts_dashboard_v1.9.0_install.yaml -n argo-rollouts
  1. 编辑 ingress 资源清单
1
vim ingress_dashboard.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: argo-rollouts
  namespace: argo-rollouts
  annotations:
    cert-manager.io/cluster-issuer: qx-ca-issuer
spec:
  ingressClassName: traefik
  tls:
    - hosts:
        - argo-rollouts.qx.lab
      secretName: argo-rollouts-tls
  rules:
    - host: argo-rollouts.qx.lab
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: argo-rollouts-dashboard
                port:
                  number: 3100
  1. 创建资源
1
kubectl apply -f ingress_dashboard.yaml

二、蓝绿部署

2.1 创建资源清单文件

  1. 创建子目录
1
2
mkdir argorollout-blue-green
cd argorollout-blue-green
  1. 编辑资源清单文件

rollout

1
vim rollout.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
  name: bluegreen-rollout # 定义Rollout的名称
spec:
  replicas: 2 # 期望副本数
  strategy:
    blueGreen: # 指定蓝绿部署策略
      activeService: bluegreen-active # 用于接收生产流量的Service
      previewService: bluegreen-preview # 用于接收预览流量的Service
      autoPromotionEnabled: false # 是否自动提升预览版本为活动版本
      previewReplicaCount: 1 # 预览版本的副本数
  revisionHistoryLimit: 2 # 保留的历史版本
  selector: # 类似deployment的selector
    matchLabels:
      app: myapp
  template: # 类似deployment的template
    metadata:
      labels:
        app: myapp
    spec:
      containers:
      - name: myapp
        image: ikubernetes/myapp:v1
        ports:
        - name: http
          containerPort: 80
          protocol: TCP

service

1
vim service.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
# 接收生产流量的Service
apiVersion: v1
kind: Service
metadata:
  name: bluegreen-active
spec:
  type: ClusterIP
  selector:
    app: myapp
  ports:
  - name: http
    port: 80
---
# 接收预览流量的Service
apiVersion: v1
kind: Service
metadata:
  name: bluegreen-preview
spec:
  type: ClusterIP
  selector:
    app: myapp
  ports:
  - name: http
    port: 80

ingress

1
vim ingress.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: myapp-prod
  annotations:
    cert-manager.io/cluster-issuer: qx-ca-issuer
spec:
  ingressClassName: traefik
  tls:
    - hosts:
        - prod.myapp.qx.lab
      secretName: prod-myapp-tls        # ★ cert-manager 自动创建并填充
  rules:
    - host: prod.myapp.qx.lab
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: bluegreen-active
                port:
                  number: 80
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: myapp-test
  annotations:
    cert-manager.io/cluster-issuer: qx-ca-issuer
spec:
  ingressClassName: traefik
  tls:
    - hosts:
        - test.myapp.qx.lab
      secretName: test-myapp-tls        # ★ cert-manager 自动创建并填充
  rules:
    - host: test.myapp.qx.lab
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: bluegreen-preview
                port:
                  number: 80

2.2 部署 application

可以 webui 点一点，也可以直接 yaml 部署。这里图方便，yaml 直接部署。

1
vim bule-green.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: blue-green
  namespace: argocd
spec:
  destination:
    name: ''
    namespace: default
    server: 'https://kubernetes.default.svc'
  source:
    path: argorollout-blue-green
    repoURL: 'git@gitlab.qx.lab:qiaoxiong/argodemo.git'
    path: argorollout-blue-green
    targetRevision: HEAD
  sources: []
  project: default
  syncPolicy:
    automated:
      prune: false
      selfHeal: false

2.3 更新镜像

可以看到效果，预览版本已经更新了，生产版本还未更新，需要手动确认。

  1. 查看状态
1
kubectl argo rollouts get rollout bluegreen-rollout
  1. 验证无误，跟随预览
1
kubectl argo rollouts promote bluegreen-rollout
  1. 如果更新到生产环境后，发现有问题，依旧可以回滚。
1
2
web 页面回滚
预览环境会先回滚，然后生产环境跟随即可
1
kubectl argo rollouts undo bluegreen-rollout

​ 指定版本回滚

1
kubectl argo rollouts undo bluegreen-rollout --revision=2
  1. 预览环境有问题，终止发布，预览环境会在一会儿后销毁。
1
kubectl argo rollouts abort bluegreen-rollout