k8s-创建自定义chart及部署efk-二十五

一、chart的结构

(1)更改helm为阿里云仓库源

[root@master helm]# helm repo remove stable
"stable" has been removed from your repositories

[root@master helm]# helm repo add stable https://kubernetes.oss-cn-hangzhou.aliyuncs.com/charts
"stable" has been added to your repositories

[root@master helm]# helm repo list
NAME         URL                                                        
local        http://127.0.0.1:8879/charts                               
incubator    https://kubernetes-charts-incubator.storage.googleapis.com/
stable       https://kubernetes.oss-cn-hangzhou.aliyuncs.com/charts

#更新
[root@master helm]# helm repo update
Hang tight while we grab the latest from your chart repositories...
...Skip local chart repository
...Successfully got an update from the "incubator" chart repository
...Successfully got an update from the "stable" chart repository
Update Complete. ⎈ Happy Helming!⎈

(2)

[root@master helm]# pwd
/root/manifests/helm
[root@master helm]# helm fetch stable/redis    #获取chart，会得到一个压缩包

[root@master helm]# tar zxf redis-6.4.3.tgz

[root@master helm]# ls
redis  redis-6.4.3.tgz  tiller-rbac.yaml

#chart目录结构
[root@master helm]# tree redis
redis
├── Chart.yaml            #chart元数据描述信息(版本...)
├── ci
│   ├── default-values.yaml
│   ├── dev-values.yaml
│   ├── production-values.yaml
│   ├── redisgraph-module-values.yaml
│   └── redis-lib-values.yaml
├── README.md
├── templates            #资源定义清单模板文件
│   ├── configmap.yaml
│   ├── health-configmap.yaml
│   ├── _helpers.tpl
│   ├── metrics-deployment.yaml
│   ├── metrics-prometheus.yaml
│   ├── metrics-svc.yaml
│   ├── networkpolicy.yaml
│   ├── NOTES.txt
│   ├── redis-master-statefulset.yaml
│   ├── redis-master-svc.yaml
│   ├── redis-rolebinding.yaml
│   ├── redis-role.yaml
│   ├── redis-serviceaccount.yaml
│   ├── redis-slave-deployment.yaml
│   ├── redis-slave-svc.yaml
│   └── secret.yaml
├── values-production.yaml
└── values.yaml            #为 templates中的资源定义清单设置自定义属性值
#其他目录结构
requirements.yaml        #当前chart是否依赖其他chart，这个文件是可选的。
charts/               #里面放置的是当前chart所要依赖的其他chart，这个是可选的。

#可以通过chart官方手册，来了解以上每项的详细含义： 
https://docs.helm.sh/developing_charts/#charts

二、用helm生成基础chart示例性文件

(1)

[root@master helm]# helm create myapp
Creating myapp

[root@master helm]# ls |grep myapp
myapp

[root@master helm]# tree myapp/
myapp/
├── charts
├── Chart.yaml
├── templates
│   ├── deployment.yaml
│   ├── _helpers.tpl
│   ├── ingress.yaml
│   ├── NOTES.txt
│   └── service.yaml
└── values.yaml

#可以自己修改每个文件里的值，然后做语法检查
[root@master helm]# helm lint myapp
==> Linting myapp
[INFO] Chart.yaml: icon is recommended

1 chart(s) linted, no failures

#打包
[root@master helm]# helm package myapp/
Successfully packaged chart and saved it to: /root/manifests/helm/myapp-0.0.1.tgz

[root@master helm]# ls |grep myapp
myapp
myapp-0.0.1.tgz

(2)启动本地仓库，并应用

[root@master helm]# helm repo list
NAME      URL                                             
stable    https://kubernetes-charts.storage.googleapis.com
local     http://127.0.0.1:8879/charts  

#启动本地仓库
[root@master helm]# helm serve 
Regenerating index. This may take a moment.
Now serving you on 127.0.0.1:8879

#查看，可见myapp已经自动保存在仓库中了
[root@master ~]# helm search myapp
NAME           CHART VERSION    APP VERSION    DESCRIPTION                            
local/myapp    0.0.1            1.0            A Helm chart for Kubernetes myapp chart

#如果定义的没问题，就可以部署了
[root@master ~]# helm install --name myapp1 local/myapp

#删除
[root@master ~]# helm delete --purge myapp1

三、EFK日志系统

(1)添加incubator源

[root@master ~]# helm repo add incubator https://kubernetes-charts-incubator.storage.googleapis.com/
"incubator" has been added to your repositories

[root@master ~]# helm repo list
NAME         URL