ArgoCD和Argo Rollouts自动化部署应用

环境说明

使用Argo Rollouts部署nginx应用:
1. 使用Rollout部署nginx
2. 采用canary部署策略
3. 结合Analysis进行渐进式交付
4. 结合Istio VirtualService进行自动化流量分割和流量迁移
5. 部署清单放在git repo中

使用ArgoCD进行自动化部署：
1. 使用Application监视Git Repository
2. 自动在Repository和Destination之间进行同步

Git Repo 说明

git repo地址：
HTTP: http://192.168.174.108:8080/admin/projects/root/nginx-deployment.git
SSH:  ssh://[email protected]:35022/root/nginx-deployment.git

添加私有Git Repo

Argo CD CLI 添加 known_hosts

# ssh-keyscan -p35022 192.168.174.108 | argocd cert add-ssh --batch

# 192.168.174.108:35022 SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.4
Enter SSH known hosts entries, one per line. Press CTRL-D when finished.
# 192.168.174.108:35022 SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.4
# 192.168.174.108:35022 SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.4
# 192.168.174.108:35022 SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.4
# 192.168.174.108:35022 SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.4
Successfully created 3 SSH known host entries

Argo CD CLI 添加私有仓库

# argocd repo add ssh://[email protected]:35022/root/nginx-deployment.git --ssh-private-key-path /root/.ssh/id_rsa

Repository 'ssh://[email protected]:35022/root/nginx-deployment.git' added

查看 repo

# argocd repo list

TYPE  NAME  REPO                                                       INSECURE  OCI    LFS    CREDS  STATUS      MESSAGE  PROJECT
git         ssh://[email protected]:35022/root/nginx-deployment.git  false     false  false  false  Successful

ArgoCD 自动部署应用

application-nginx.yaml

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: nginx
  namespace: argocd
  finalizers:                       
    - resources-finalizer.argocd.argoproj.io
  annotations:
    notifications.argoproj.io/subscribe.on-deployed.email: [email protected];[email protected]
spec:
  project: default
  source:
    repoURL: ssh://[email protected]:35022/root/nginx-deployment.git
    targetRevision: HEAD
    path: nginx/prod
  destination:
    server: https://kubernetes.default.svc
    namespace: argo-demo
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
      allowEmpty: false
    syncOptions:
    - Validate=false
    - CreateNamespace=true
    - PrunePropagationPolicy=foreground
    - PruneLast=true
    - ApplyOutOfSyncOnly=true
    retry:
      limit: 5
      backoff:
        duration: 5s
        factor: 2
        maxDuration: 3m
  ignoreDifferences:
  - group: networking.istio.io
    kind: VirtualService
    jsonPointers:
    - /spec/http/0

创建应用

# kubectl apply -f application-nginx.yaml

application.argoproj.io/nginx created

查看应用

访问应用

/ $ while true;do curl nginx.argo-demo.svc.wgs.local -I ; sleep 1;done

HTTP/1.1 200 OK
server: envoy
date: Tue, 19 Dec 2023 07:48:55 GMT
content-type: text/html
content-length: 615
last-modified: Tue, 11 Apr 2023 17:21:57 GMT
etag: "64359735-267"
accept-ranges: bytes
x-envoy-upstream-service-time: 10

更新应用版本

# sed -i 's@nginx:1.24-alpine@nginx:1.25-alpine@g' nginx/prod/Rollout.yaml
# git add .
# git commit -m "update nginx:1.24-alpine to nginx:1.25-alpine"
# git push

查看更新过程