Helm App创建

一、gitlab仓库配置
1.1克隆代码

root@k8s-01:~/argocd# cd /opt/
root@k8s-01:/opt# ls
cni  containerd
root@k8s-01:/opt# git clone http://192.168.30.181/develop/argo-demo.git
Cloning into 'argo-demo'...
Username for 'http://192.168.30.181': root
Password for 'http://root@192.168.30.181': 
remote: Enumerating objects: 19, done.
remote: Counting objects: 100% (19/19), done.
remote: Compressing objects: 100% (16/16), done.
remote: Total 19 (delta 3), reused 0 (delta 0), pack-reused 0 (from 0)
Receiving objects: 100% (19/19), 4.49 KiB | 1.12 MiB/s, done.
Resolving deltas: 100% (3/3), done.
root@k8s-01:/opt# cd argo-demo/
root@k8s-01:/opt/argo-demo# ls
manifests  README.md
root@k8s-01:/opt/argo-demo#

1.2创建Helm应用

创建一个名为helm的app

root@k8s-01:/opt/argo-demo# helm create helm
Creating helm
root@k8s-01:/opt/argo-demo# ls
helm  manifests  README.md
root@k8s-01:/opt/argo-demo# tree helm
helm
├── charts
├── Chart.yaml
├── templates
│   ├── deployment.yaml
│   ├── _helpers.tpl
│   ├── hpa.yaml
│   ├── ingress.yaml
│   ├── NOTES.txt
│   ├── serviceaccount.yaml
│   ├── service.yaml
│   └── tests
│       └── test-connection.yaml
└── values.yaml

3 directories, 10 files

修改helm配置

[root@tiaoban argo-demo]# cd helm/
[root@tiaoban helm]# vim Chart.yaml
appVersion: "v1" # 修改默认镜像版本为v1
[root@tiaoban helm]# vim values.yaml
image:
  repository: ikubernetes/myapp # 修改镜像仓库地址

helm文件校验

root@k8s-01:/opt/argo-demo# helm lint helm
==> Linting helm
[INFO] Chart.yaml: icon is recommended

1 chart(s) linted, 0 chart(s) failed

1.3推送代码

root@k8s-01:/opt/argo-demo# git add .
root@k8s-01:/opt/argo-demo# git commit -m "add helm"
Author identity unknown

*** Please tell me who you are.

Run

  git config --global user.email "you@example.com"
  git config --global user.name "Your Name"

to set your account's default identity.
Omit --global to set the identity only in this repository.

fatal: unable to auto-detect email address (got 'root@k8s-01.(none)')
root@k8s-01:/opt/argo-demo# 
root@k8s-01:/opt/argo-demo# 
root@k8s-01:/opt/argo-demo# 
root@k8s-01:/opt/argo-demo# git config --global user.email “790731@qq.com”
git config --global user.name "axing"
root@k8s-01:/opt/argo-demo# git commit -m "add helm"
[main ea70765] add helm
 11 files changed, 450 insertions(+)
 create mode 100644 helm/.helmignore
 create mode 100644 helm/Chart.yaml
 create mode 100644 helm/templates/NOTES.txt
 create mode 100644 helm/templates/_helpers.tpl
 create mode 100644 helm/templates/deployment.yaml
 create mode 100644 helm/templates/hpa.yaml
 create mode 100644 helm/templates/ingress.yaml
 create mode 100644 helm/templates/service.yaml
 create mode 100644 helm/templates/serviceaccount.yaml
 create mode 100644 helm/templates/tests/test-connection.yaml
 create mode 100644 helm/values.yaml
root@k8s-01:/opt/argo-demo# 
root@k8s-01:/opt/argo-demo# git push
Username for 'http://192.168.30.181': root
Password for 'http://root@192.168.30.181': 
Enumerating objects: 17, done.
Counting objects: 100% (17/17), done.
Delta compression using up to 8 threads
Compressing objects: 100% (15/15), done.
Writing objects: 100% (16/16), 6.00 KiB | 6.00 MiB/s, done.
Total 16 (delta 0), reused 0 (delta 0), pack-reused 0
To http://192.168.30.181/develop/argo-demo.git
   293d75f..ea70765  main -> main
root@k8s-01:/opt/argo-demo#

1.4查看验证

二、Argo CD配置
2.1创建helm类型的app

通过Argo UI创建app，填写如下信息：

2.2查看验证

查看argo cd应用信息，已完成部署。

登录k8s查看资源

[root@tiaoban helm]# kubectl get pod -o wide
NAME                         READY   STATUS    RESTARTS        AGE     IP            NODE    NOMINATED NODE   READINESS GATES
demo-helm-585b5ddb66-bdbcr   1/1     Running   0               2m38s   10.244.3.31   work3   <none>           <none>
rockylinux                   1/1     Running   13 (140m ago)   13d     10.244.1.7    work1   <none>           <none>
[root@tiaoban helm]# kubectl get svc 
NAME         TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)    AGE
demo-helm    ClusterIP   10.105.202.171   <none>        80/TCP     2m41s
kubernetes   ClusterIP   10.96.0.1        <none>        443/TCP    279d
[root@tiaoban helm]# kubectl exec -it rockylinux -- bash
[root@rockylinux /]# curl demo-helm 
Hello MyApp | Version: v1 | <a href="hostname.html">Pod Name</a>

版本更新测试

#修改git仓库文件，模拟版本更新
root@k8s-01:/opt/argo-demo# cd helm/
root@k8s-01:/opt/argo-demo/helm# ls
charts  Chart.yaml  templates  values.yaml
root@k8s-01:/opt/argo-demo/helm# vi Chart.yaml 
root@k8s-01:/opt/argo-demo/helm# ls
charts  Chart.yaml  templates  values.yaml
root@k8s-01:/opt/argo-demo/helm# vi values.yaml 
root@k8s-01:/opt/argo-demo/helm# ls
charts  Chart.yaml  templates  values.yaml
# 提交推送至git仓库
root@k8s-01:/opt/argo-demo/helm# git add .
root@k8s-01:/opt/argo-demo/helm# git commit -m "update helm v2"
[main 59dcb2d] update helm v2
 2 files changed, 3 insertions(+), 3 deletions(-)
root@k8s-01:/opt/argo-demo/helm# git push
Username for 'http://192.168.30.181': root
Password for 'http://root@192.168.30.181': 
Enumerating objects: 9, done.
Counting objects: 100% (9/9), done.
Delta compression using up to 8 threads
Compressing objects: 100% (5/5), done.
Writing objects: 100% (5/5), 475 bytes | 475.00 KiB/s, done.
Total 5 (delta 3), reused 0 (delta 0), pack-reused 0
To http://192.168.30.181/develop/argo-demo.git
   ea70765..59dcb2d  main -> main
root@k8s-01:/opt/argo-demo/helm#

查看argo cd更新记录

访问验证

[root@tiaoban helm]# kubectl exec -it rockylinux -- bash
[root@rockylinux /]# curl demo-helm 
Hello MyApp | Version: v2 | <a href="hostname.html">Pod Name</a>

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