127 lines
4.5 KiB
Markdown
127 lines
4.5 KiB
Markdown
|
# 安装dashboard插件
|
|||
|
|
|
|||
|
|
官方文件目录：`kubernetes/cluster/addons/dashboard`
|
|||
|
|
|
|||
|
|
我们使用的文件
|
|||
|
|
|
|||
|
|
``` bash
|
|||
|
|
$ ls *.yaml
|
|||
|
|
dashboard-controller.yaml dashboard-service.yaml dashboard-rbac.yaml
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
已经修改好的 yaml 文件见：[dashboard](./manifests/dashboard)
|
|||
|
|
|
|||
|
|
由于 `kube-apiserver` 启用了 `RBAC` 授权，而官方源码目录的 `dashboard-controller.yaml` 没有定义授权的 ServiceAccount，所以后续访问 `kube-apiserver` 的 API 时会被拒绝，web中提示：
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
Forbidden (403)
|
|||
|
|
|
|||
|
|
User "system:serviceaccount:kube-system:default" cannot list jobs.batch in the namespace "default". (get jobs.batch)
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
增加了一个`dashboard-rbac.yaml`文件，定义一个名为 dashboard 的 ServiceAccount，然后将它和 Cluster Role view 绑定。
|
|||
|
|
|
|||
|
|
## 配置dashboard-service
|
|||
|
|
|
|||
|
|
``` bash
|
|||
|
|
$ diff dashboard-service.yaml.orig dashboard-service.yaml
|
|||
|
|
10a11
|
|||
|
|
> type: NodePort
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
+ 指定端口类型为 NodePort，这样外界可以通过地址 nodeIP:nodePort 访问 dashboard；
|
|||
|
|
|
|||
|
|
## 配置dashboard-controller
|
|||
|
|
|
|||
|
|
``` bash
|
|||
|
|
$ diff dashboard-controller.yaml.orig dashboard-controller.yaml
|
|||
|
|
23c23
|
|||
|
|
< image: gcr.io/google_containers/kubernetes-dashboard-amd64:v1.6.0
|
|||
|
|
---
|
|||
|
|
> image: sz-pg-oam-docker-hub-001.tendcloud.com/library/kubernetes-dashboard-amd64:v1.6.0
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
## 执行所有定义文件
|
|||
|
|
|
|||
|
|
``` bash
|
|||
|
|
$ pwd
|
|||
|
|
/root/kubernetes/cluster/addons/dashboard
|
|||
|
|
$ ls *.yaml
|
|||
|
|
dashboard-controller.yaml dashboard-service.yaml
|
|||
|
|
$ kubectl create -f .
|
|||
|
|
service "kubernetes-dashboard" created
|
|||
|
|
deployment "kubernetes-dashboard" created
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
## 检查执行结果
|
|||
|
|
|
|||
|
|
查看分配的 NodePort
|
|||
|
|
|
|||
|
|
``` bash
|
|||
|
|
$ kubectl get services kubernetes-dashboard -n kube-system
|
|||
|
|
NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
|
|||
|
|
kubernetes-dashboard 10.254.224.130 <nodes> 80:30312/TCP 25s
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
+ NodePort 30312映射到 dashboard pod 80端口；
|
|||
|
|
|
|||
|
|
检查 controller
|
|||
|
|
|
|||
|
|
``` bash
|
|||
|
|
$ kubectl get deployment kubernetes-dashboard -n kube-system
|
|||
|
|
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
|
|||
|
|
kubernetes-dashboard 1 1 1 1 3m
|
|||
|
|
$ kubectl get pods -n kube-system | grep dashboard
|
|||
|
|
kubernetes-dashboard-1339745653-pmn6z 1/1 Running 0 4m
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
## 访问dashboard
|
|||
|
|
|
|||
|
|
有以下三种方式：
|
|||
|
|
|
|||
|
|
- kubernetes-dashboard 服务暴露了 NodePort，可以使用 `http://NodeIP:nodePort` 地址访问 dashboard；
|
|||
|
|
- 通过 kube-apiserver 访问 dashboard（https 6443端口和http 8080端口方式）；
|
|||
|
|
- 通过 kubectl proxy 访问 dashboard：
|
|||
|
|
|
|||
|
|
### 通过 kubectl proxy 访问 dashboard
|
|||
|
|
|
|||
|
|
启动代理
|
|||
|
|
|
|||
|
|
``` bash
|
|||
|
|
$ kubectl proxy --address='172.20.0.113' --port=8086 --accept-hosts='^*$'
|
|||
|
|
Starting to serve on 172.20.0.113:8086
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
+ 需要指定 `--accept-hosts` 选项，否则浏览器访问 dashboard 页面时提示 “Unauthorized”；
|
|||
|
|
|
|||
|
|
浏览器访问 URL：`http://172.20.0.113:8086/ui`
|
|||
|
|
自动跳转到：`http://172.20.0.113:8086/api/v1/proxy/namespaces/kube-system/services/kubernetes-dashboard/#/workload?namespace=default`
|
|||
|
|
|
|||
|
|
### 通过 kube-apiserver 访问dashboard
|
|||
|
|
|
|||
|
|
获取集群服务地址列表
|
|||
|
|
|
|||
|
|
``` bash
|
|||
|
|
$ kubectl cluster-info
|
|||
|
|
Kubernetes master is running at https://172.20.0.113:6443
|
|||
|
|
KubeDNS is running at https://172.20.0.113:6443/api/v1/proxy/namespaces/kube-system/services/kube-dns
|
|||
|
|
kubernetes-dashboard is running at https://172.20.0.113:6443/api/v1/proxy/namespaces/kube-system/services/kubernetes-dashboard
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
浏览器访问 URL：`https://172.20.0.113:6443/api/v1/proxy/namespaces/kube-system/services/kubernetes-dashboard`（浏览器会提示证书验证，因为通过加密通道，以改方式访问的话，需要提前导入证书到你的计算机中）。这是我当时在这遇到的坑：[通过 kube-apiserver 访问dashboard，提示User "system:anonymous" cannot proxy services in the namespace "kube-system". #5](https://github.com/opsnull/follow-me-install-kubernetes-cluster/issues/5)，已经解决。
|
|||
|
|
|
|||
|
|
**导入证书**
|
|||
|
|
|
|||
|
|
将生成的admin.pem证书转换格式
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
openssl pkcs12 -export -in admin.pem -out admin.p12 -inkey admin-key.pem
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
将生成的`admin.p12`证书导入的你的电脑，导出的时候记住你设置的密码，导入的时候还要用到。
|
|||
|
|
|
|||
|
|
如果你不想使用**https**的话，可以直接访问insecure port 8080端口:`http://172.20.0.113:8080/api/v1/proxy/namespaces/kube-system/services/kubernetes-dashboard`
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
由于缺少 Heapster 插件，当前 dashboard 不能展示 Pod、Nodes 的 CPU、内存等 metric 图形。
|