查看“Helm3”的源代码


[[Helm基础]] 姐妹篇这个是helm2

=helm3=
==ins ==
<pre>
 wget -c https://get.helm.sh/helm-v3.0.3-linux-amd64.tar.gz
    tar xvf  helm-v3.0.3-linux-amd64.tar.gz 
     sudo mv linux-amd64/helm /usr/local/bin/helm


果想要更舒服一些，那么可以添加自动完成的代码：

# source <(helm completion bash)

</pre>
==添加 Chart 仓库==
<pre>
在 Helm 3.0 版本中，默认是不会添加 Chart 仓库，所以这里我们需要手动添加，下面是添加一些常用的 Charts 库，命令如下：

$ helm repo add  elastic    https://helm.elastic.co
$ helm repo add  gitlab     https://charts.gitlab.io
$ helm repo add  harbor     https://helm.goharbor.io
$ helm repo add  bitnami    https://charts.bitnami.com/bitnami
$ helm repo add  incubator  https://kubernetes-charts-incubator.storage.googleapis.com
$ helm repo add  stable     https://kubernetes-charts.storage.googleapis.com

增加完仓库后，需要执行更新命令，将仓库中的信息进行同步：

$ helm repo update

    注意：如果有的仓库不能正常解析，请更换 DNS 地址，在测试过程中，发现有的能正常解析，有的不能。如果还不行，就直接将域名和对应的地址写死在 Host 文件中
</pre>
==Helm 的基本操作==
===安装应用===
通过 Helm 在 Repo 中查询可安装的 nginx 
<pre>
helm search repo nginx
NAME                            	CHART VERSION	APP VERSION         	DESCRIPTION                                       
aliyun/nginx-ingress            	0.9.5        	0.10.2              	An nginx Ingress controller that uses ConfigMap...
aliyun/nginx-lego               	0.3.1        	                    	Chart for nginx-ingress-controller and kube-lego  
apphub/nginx                    	5.1.5        	1.16.1              	Chart for the nginx server                        
apphub/nginx-ingress            	1.30.3       	0.28.0              	An nginx Ingress controller that uses ConfigMap...
apphub/nginx-ingress-controller 	5.3.4        	0.29.0              	Chart for the nginx Ingress controller            
apphub/nginx-lego               	0.3.1        	                    	Chart for nginx-ingress-controller and kube-lego  
apphub/nginx-php                	1.0.0        	nginx-1.10.3_php-7.0	Chart for the nginx php server                    
bitnami/nginx                   	5.1.7        	1.16.1              	Chart for the nginx server         


helm search repo  redis 
NAME                            	CHART VERSION	APP VERSION  	DESCRIPTION                                       
aliyun/redis                    	1.1.15       	4.0.8        	Open source, advanced key-value store. It is of...
aliyun/redis-ha                 	2.0.1        	             	Highly available Redis cluster with multiple se...
</pre>


安装测试：
–namespace：指定安装的 Namespace

   helm install nginx bitnami/nginx -n mydlqcloud 

查看应用状态

  helm status nginx -n mydlqcloud

=== ins mysql===
参考官方  https://helm.sh/docs/intro/quickstart/
<pre>
 helm repo add stable https://kubernetes-charts.storage.googleapis.com/

$ helm repo update              # Make sure we get the latest list of charts

$ helm install stable/mysql --generate-name

NAME: mysql-1583911857
LAST DEPLOYED: Wed Mar 11 15:31:01 2020
NAMESPACE: default
STATUS: deployed
REVISION: 1
NOTES:
MySQL can be accessed via port 3306 on the following DNS name from within your cluster:
mysql-1583911857.default.svc.cluster.local

To get your root password run:

    MYSQL_ROOT_PASSWORD=$(kubectl get secret --namespace default mysql-1583911857 -o jsonpath="{.data.mysql-root-password}" | base64 --decode; echo)

To connect to your database:

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

    kubectl run -i --tty ubuntu --image=ubuntu:16.04 --restart=Never -- bash -il

2. Install the mysql client:

    $ apt-get update && apt-get install mysql-client -y

3. Connect using the mysql cli, then provide your password:
    $ mysql -h mysql-1583911857 -p

To connect to your database directly from outside the K8s cluster:
    MYSQL_HOST=127.0.0.1
    MYSQL_PORT=3306

    # Execute the following command to route the connection:
    kubectl port-forward svc/mysql-1583911857 3306

    mysql -h ${MYSQL_HOST} -P${MYSQL_PORT} -u root -p${MYSQL_ROOT_PASSWORD}

</pre>

=see also=
https://helm.sh/docs/intro/install/

[https://www.cnblogs.com/Erik_Xu/p/8893725.html Helm - Kubernetes服务编排的利器]

[http://www.mydlq.club/article/51/ 安装 Helm3 管理 Kubernetes 应用]

[https://www.jianshu.com/p/8fc2ba925516 【k8s学习】Kubernetes打包工具Helm介绍]

[https://blog.csdn.net/eyeofeagle/article/details/102703065  k8s之helm安装mysql]

[https://blog.csdn.net/rockstics/article/details/115768003  helm3 安装及redis部署]

[https://www.cnblogs.com/evescn/p/16249207.html helm 安装 MySQL 主从 ]

[https://www.cnblogs.com/evescn/p/16242491.html helm 安装 Redis 3主3从]

[https://www.cnblogs.com/wangzhangtao/p/12593812.html helm部署redis主从和哨兵模式]

[https://www.cnblogs.com/evescn/p/16274045.html helm 安装 RabbitMQ 集群]


[https://cloud.tencent.com/developer/article/1433261 Kubernetes 集群使用 Helm 搭建 GitLab 并配置 Ingress]