k8s 安装 Helm

    基于 Ubuntu 20.04

    版本对比

    版本对比: https://helm.sh/zh/docs/topics/version_skew/

    检测 k8s 版本 安装合适的helm 版本

    root@l2:~# kubectl version
Client Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.16", GitCommit:"e37e4ab4cc8dcda84f1344dda47a97bb1927d074", GitTreeState:"clean", BuildDate:"2021-10-27T16:25:59Z", GoVersion:"go1.15.15", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.16", GitCommit:"e37e4ab4cc8dcda84f1344dda47a97bb1927d074", GitTreeState:"clean", BuildDate:"2021-10-27T16:20:18Z", GoVersion:"go1.15.15", Compiler:"gc", Platform:"linux/amd64"}

    对比版本可知 1.19 版本的 k8s 支持的最新 helm 版本是 3.7.x

    安装 helm

    see https://helm.sh/zh/docs/intro/install/

    添加仓库

    curl https://baltocdn.com/helm/signing.asc | gpg --dearmor | sudo tee /usr/share/keyrings/helm.gpg > /dev/null
sudo apt-get install apt-transport-https --yes
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/helm.gpg] https://baltocdn.com/helm/stable/debian/ all main" | sudo tee /etc/apt/sources.list.d/helm-stable-debian.list
sudo apt-get update

    检测版本 apt-cache policy helm | grep 3.7

    root@l2:~# apt-cache policy helm | grep 3.7
     3.7.2-1 500
     3.7.1-1 500
     3.7.0-1 500

    安装检索出来的最新版本 apt install helm=3.7.2-1

    添加仓库

    添加仓库
    helm repo add bitnami https://charts.bitnami.com/bitnami
    更新仓库
    helm repo update

    安装测试
    helm install bitnami/mysql --generate-name

    root@l2:~# helm install bitnami/mysql --generate-name
NAME: mysql-1653757888
LAST DEPLOYED: Sun May 29 01:11:33 2022
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: mysql
CHART VERSION: 9.1.1
APP VERSION: 8.0.29

** Please be patient while the chart is being deployed **

Tip:

  Watch the deployment status using the command: kubectl get pods -w --namespace default

Services:

  echo Primary: mysql-1653757888.default.svc.cluster.local:3306

Execute the following to get the administrator credentials:

  echo Username: root
  MYSQL_ROOT_PASSWORD=$(kubectl get secret --namespace default mysql-1653757888 -o jsonpath="{.data.mysql-root-password}" | base64 --decode)

To connect to your database:

  1. Run a pod that you can use as a client:

      kubectl run mysql-1653757888-client --rm --tty -i --restart='Never' --image  docker.io/bitnami/mysql:8.0.29-debian-10-r23 --namespace default --env MYSQL_ROOT_PASSWORD=$MYSQL_ROOT_PASSWORD --command -- bash

  2. To connect to primary service (read/write):

      mysql -h mysql-1653757888.default.svc.cluster.local -uroot -p"$MYSQL_ROOT_PASSWORD"

    指定 nfs 安装

    helm install bitnami/mysql --set global.storageClass=nfs-storage --generate-name

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