查看“Helm3”的源代码

[[category:k8s]][[category:devops]] 
 

[[Helm基础]] 姐妹篇这个是helm2, 现在直接看本文  helm3

=helm3=
helm [helm] v.掌(舵)；掌握；给…戴上头盔

==ins ==

[https://www.cnblogs.com/lvzhenjiang/p/14878279.html 轻松完爆Helm私有仓库]
<pre>
wget -c https://get.helm.sh/helm-v3.9.3-linux-amd64.tar.gz
tar xvf helm-v3.9.3-linux-amd64.tar.gz
sudo mv linux-amd64/helm /usr/local/bin/helm

 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

===helm redis-cluster  ===
<pre>
1. 添加 bitnami 的仓库
helm repo add bitnami https://charts.bitnami.com/bitnami #国内网络不太成功的
 helm repo add azure http://mirror.azure.cn/kubernetes/charts
helm repo add bitnami "https://helm-charts.itboon.top/bitnami" --force-update
helm repo update bitnami


2. 查询 Redis 资源
helm repo update
redis# helm  search repo redis 
NAME                           	CHART VERSION	APP VERSION	DESCRIPTION                                       
azure/prometheus-redis-exporter	3.5.1        	1.3.4      	DEPRECATED Prometheus exporter for Redis metrics  
azure/redis                    	10.5.7       	5.0.7      	DEPRECATED Open source, advanced key-value stor...
azure/redis-ha                 	4.4.6        	5.0.6      	DEPRECATED - Highly available Kubernetes implem...
bitnami/redis                  	20.1.5       	7.4.0      	Redis(R) is an open source, advanced key-value ...
bitnami/redis-cluster          	11.0.5       	7.4.0      	Redis(R) is an open source, scalable, distribut...

3. 拉取 chart 到本地
helm pull bitnami/redis-cluster --version 11.0.5
  cd redis/

 1277  tar xvf redis-cluster-11.0.5.tgz 
 1278  cp redis-cluster/values.yaml ./values-test.yaml

4. 对本地 valuse-test.yaml 修改
/redis# kubectl get storageclasses
NAME                    PROVISIONER                                        RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE
nfs                     nfs-nfs                                            Delete          Immediate           false                  4d23h
nfs-client              k8s-sigs.io/nfs-subdir-external-provisioner        Delete          Immediate           false                  4d17h

cat values-test.yaml 

global:
  storageClass: "nfs-client" # 配置sc为nfs
  redis:
    password: "redis123"		# 定义 redis 密码

因为你懂的原因  有很多个地方 直接替换
把 image 有关的 docker.io 改为 m.daocloud.io/docker.io
样子如下 

## @param image.debug Enable image debug mode
##
image:
  registry: m.daocloud.io/docker.io
  repository: bitnami/redis-cluster
  tag: 7.4.0-debian-12-r4

5. 安装 Redis 集群
# 创建 mynamespace 名称空间
$ kubectl create ns mynamespace

# 安装 Redis 集群
$ helm -n mynamespace install redis-cluster redis-cluster -f values-test.yaml
NAME: redis-cluster
LAST DEPLOYED: Thu Oct 10 02:22:11 2024
NAMESPACE: mynamespace
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: redis-cluster
CHART VERSION: 11.0.5
APP VERSION: 7.4.0** Please be patient while the chart is being deployed **


To get your password run:
    export REDIS_PASSWORD=$(kubectl get secret --namespace "mynamespace" redis-cluster -o jsonpath="{.data.redis-password}" | base64 -d)

You have deployed a Redis&reg; Cluster accessible only from within you Kubernetes Cluster.INFO: The Job to create the cluster will be created.To connect to your Redis&reg; cluster:

1. Run a Redis&reg; pod that you can use as a client:
kubectl run --namespace mynamespace redis-cluster-client --rm --tty -i --restart='Never' \
 --env REDIS_PASSWORD=$REDIS_PASSWORD \
--image m.daocloud.io/docker.io/bitnami/redis-cluster:7.4.0-debian-12-r4 -- bash

2. Connect using the Redis&reg; CLI:

redis-cli -c -h redis-cluster -a $REDIS_PASSWORD



WARNING: There are "resources" sections in the chart not set. Using "resourcesPreset" is not recommended for production. For production installations, please set the following values according to your workload needs:
  - redis.resources
  - updateJob.resources
+info https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/

⚠ SECURITY WARNING: Original containers have been substituted. This Helm chart was designed, tested, and validated on multiple platforms using a specific set of Bitnami and Tanzu Application Catalog containers. Substituting other containers is likely to cause degraded security and performance, broken chart features, and missing environment variables.

Substituted images detected:
  - m.daocloud.io/docker.io/bitnami/redis-cluster:7.4.0-debian-12-r4
  - m.daocloud.io/docker.io/bitnami/os-shell:12-debian-12-r30
  - m.daocloud.io/docker.io/bitnami/redis-exporter:1.63.0-debian-12-r0
  - m.daocloud.io/docker.io/bitnami/os-shell:12-debian-12-r30


## helm -n NAMESAPCE install SERVER_NAME FILE_NAME -f CONFIG_FILE
-n 指定 kubernetes 集群名称空间
-f 指定使用的配置文件，文件中定义的配置可以覆盖 redis-cluster/values.yaml 文件中配置

/redis#  helm -n mynamespace list
NAME         	NAMESPACE  	REVISION	UPDATED                                	STATUS  	CHART               	APP VERSION
redis-cluster	mynamespace	1       	2024-10-10 02:22:11.203808604 +0000 UTC	deployed	redis-cluster-11.0.5	7.4.0   

kubectl -n mynamespace get pods -l helm.sh/chart=redis-cluster-11.0.5 
NAME              READY   STATUS    RESTARTS      AGE
redis-cluster-0   1/1     Running   1 (21m ago)   24m
redis-cluster-1   1/1     Running   1 (21m ago)   24m
redis-cluster-2   1/1     Running   1 (21m ago)   24m
redis-cluster-3   1/1     Running   1 (21m ago)   24m
redis-cluster-4   1/1     Running   0             24m
redis-cluster-5   1/1     Running   0             24m

edis# kubectl -n mynamespace get pods,sts,svc  -l helm.sh/chart=redis-cluster-11.0.5 
NAME                  READY   STATUS    RESTARTS      AGE
pod/redis-cluster-0   1/1     Running   1 (25m ago)   28m
pod/redis-cluster-1   1/1     Running   1 (25m ago)   28m
pod/redis-cluster-2   1/1     Running   1 (25m ago)   28m
pod/redis-cluster-3   1/1     Running   1 (25m ago)   28m
pod/redis-cluster-4   1/1     Running   0             28m
pod/redis-cluster-5   1/1     Running   0             28m

NAME                             READY   AGE
statefulset.apps/redis-cluster   6/6     28m

NAME                             TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)              AGE
service/redis-cluster            ClusterIP   10.233.79.164   <none>        6379/TCP             28m
service/redis-cluster-headless   ClusterIP   None            <none>        6379/TCP,16379/TCP   28m


6. 连接 Redis 集群 验证服务

kubectl get secret --namespace "mynamespace" redis-cluster -o jsonpath="{.data.redis-password}" | base64 -d
 1301  export REDIS_PASSWORD=$(kubectl get secret --namespace "mynamespace" redis-cluster -o jsonpath="{.data.redis-password}" | base64 -d)
 1302  kubectl run --namespace mynamespace redis-cluster-client --rm --tty -i --restart='Never'  --env REDIS_PASSWORD=$REDIS_PASSWORD --image m.daocloud.io/docker.io/bitnami/redis-cluster:7.4.0-debian-12-r4 -- bash

</pre>
https://juejin.cn/post/7353197221742018600

==== trouble====
<pre>root@ubuntu-2004aug-1:~/redis# kubectl -n mynamespace get pods -l helm.sh/chart=redis-cluster-11.0.5
NAME              READY   STATUS              RESTARTS   AGE
redis-cluster-0   0/1     ImagePullBackOff    0          92s
redis-cluster-1   0/1     ImagePullBackOff    0          91s
redis-cluster-2   0/1     ContainerCreating   0          90s
redis-cluster-3   0/1     ContainerCreating   0          90s
redis-cluster-4   0/1     ContainerCreating   0          89s
redis-cluster-5   0/1     ContainerCreating   0          89s


原因  
Pulling image "docker.io/bitnami/redis-cluster:7.4.0-debian-12-r4"



m.daocloud.io/docker.io/library/xtrabackup:1.0


m.daocloud.io/docker.io/bitnami/redis-cluster:7.4.0-debian-12-r4</pre>
=== 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=

=renference=
[https://blog.csdn.net/Bruce1114/article/details/126034972  国内helm快速安装和添加常用charts仓库]

[https://github.com/sir5kong/helm-charts-hub  Helm Charts 像站，中国区网络加速 ]

https://artifacthub.io/packages/helm/bitnami/redis-cluster


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


[https://juejin.cn/post/6844903928404918286  从入门到实践：创作一个自己的 Helm Chart ]
[https://blog.csdn.net/qq_35887546/article/details/106051393 k8s (二十二) --- kubernetes Helm详解及使用helm部署redis高可用集群]

[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]


[https://www.jianshu.com/p/4bd853a8068b Helm 从入门到实践]