- 部署文件 Github 地址:https://github.com/my-dlq/blog-example/tree/master/kubernetes/kubernetes-dashboard2.0.0-deploy
系統環境:
- Kubernetes 版本:1.18.1
- kubernetes-dashboard 版本:v2.0.0
一、簡介
Kubernetes Dashboard 是 Kubernetes 集羣的基於 Web 的通用 UI。它允許用戶管理在羣集中運行的應用程序並對其進行故障排除,以及管理羣集本身。這個項目在 Github 已經有半年多不更新了,最近推出了 v2.0.0 版本,這裏在 Kubernetes 中部署一下,嘗試看看新版本咋樣。
二、兼容性
Kubernetes版本 | 1.13 | 1.14 | 1.15 | 1.16 | 1.17 | 1.18 |
---|---|---|---|---|---|---|
兼容性 | ? | ? | ? | ? | ? | ✓ |
- ✕ 不支持的版本範圍。
- ✓ 完全支持的版本範圍。
- ? 由於Kubernetes API版本之間的重大更改,某些功能可能無法在儀表板中正常運行。
三、部署 Kubernetes Dashboard
注意:如果“kube-system”命名空間已經存在 Kubernetes-Dashboard 相關資源,請換成別的 Namespace。
完整部署文件 Github 地址:https://github.com/my-dlq/blog-example/tree/master/kubernetes/kubernetes-dashboard2.0.0-deploy
pull down相關的鏡像
[root@master dashboard]# docker pull kubernetesui/dashboard:v2.0.0
v2.0.0: Pulling from kubernetesui/dashboard
2a43ce254c7f: Pull complete
Digest: sha256:06868692fb9a7f2ede1a06de1b7b32afabc40ec739c1181d83b5ed3eb147ec6e
Status: Downloaded newer image for kubernetesui/dashboard:v2.0.0
docker.io/kubernetesui/dashboard:v2.0.0
[root@master kubelet-config]# docker pull kubernetesui/metrics-scraper:v1.0.4
v1.0.4: Pulling from kubernetesui/metrics-scraper
07008dc53a3e: Pull complete
1f8ea7f93b39: Pull complete
04d0e0aeff30: Pull complete
Digest: sha256:555981a24f184420f3be0c79d4efb6c948a85cfce84034f85a563f4151a81cbf
Status: Downloaded newer image for kubernetesui/metrics-scraper:v1.0.4
docker.io/kubernetesui/metrics-scraper:v1.0.4
1、Dashboard RBAC
創建 Dashboard RBAC 部署文件
dashboard-rbac.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
rules:
- apiGroups: [""]
resources: ["secrets"]
resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs", "kubernetes-dashboard-csrf"]
verbs: ["get", "update", "delete"]
- apiGroups: [""]
resources: ["configmaps"]
resourceNames: ["kubernetes-dashboard-settings"]
verbs: ["get", "update"]
- apiGroups: [""]
resources: ["services"]
resourceNames: ["heapster", "dashboard-metrics-scraper"]
verbs: ["proxy"]
- apiGroups: [""]
resources: ["services/proxy"]
resourceNames: ["heapster", "http:heapster:", "https:heapster:", "dashboard-metrics-scraper", "http:dashboard-metrics-scraper"]
verbs: ["get"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
rules:
- apiGroups: ["metrics.k8s.io"]
resources: ["pods", "nodes"]
verbs: ["get", "list", "watch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: kubernetes-dashboard
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: kubernetes-dashboard
namespace: kube-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: kubernetes-dashboard
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kube-system
部署 Dashboard RBAC
$ kubectl apply -f dashboard-rbac.yaml
2、創建 ConfigMap、Secret
創建 Dashboard Config & Secret 部署文件
dashboard-configmap-secret.yaml
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-certs
namespace: kube-system
type: Opaque
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-csrf
namespace: kube-system
type: Opaque
data:
csrf: ""
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-key-holder
namespace: kube-system
type: Opaque
---
kind: ConfigMap
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-settings
namespace: kube-system
部署 Dashboard Config & Secret
$ kubectl apply -f dashboard-configmap-secret.yaml
3、kubernetes-dashboard
創建 Dashboard Deploy 部署文件
dashboard-deploy.yaml
## Dashboard Service
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
spec:
type: NodePort
ports:
- port: 443
nodePort: 30001
targetPort: 8443
selector:
k8s-app: kubernetes-dashboard
---
## Dashboard Deployment
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: kubernetes-dashboard
template:
metadata:
labels:
k8s-app: kubernetes-dashboard
spec:
serviceAccountName: kubernetes-dashboard
containers:
- name: kubernetes-dashboard
image: kubernetesui/dashboard:v2.0.0
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: true
runAsUser: 1001
runAsGroup: 2001
ports:
- containerPort: 8443
protocol: TCP
args:
- --auto-generate-certificates
- --namespace=kube-system #設置爲當前部署的Namespace
resources:
limits:
cpu: 1000m
memory: 512Mi
requests:
cpu: 1000m
memory: 512Mi
livenessProbe:
httpGet:
scheme: HTTPS
path: /
port: 8443
initialDelaySeconds: 30
timeoutSeconds: 30
volumeMounts:
- name: kubernetes-dashboard-certs
mountPath: /certs
- name: tmp-volume
mountPath: /tmp
- name: localtime
readOnly: true
mountPath: /etc/localtime
volumes:
- name: kubernetes-dashboard-certs
secret:
secretName: kubernetes-dashboard-certs
- name: tmp-volume
emptyDir: {}
- name: localtime
hostPath:
type: File
path: /etc/localtime
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
部署 Dashboard Deploy
$ kubectl apply -f dashboard-deploy.yaml
4、創建 kubernetes-metrics-scraper
創建 Dashboard Metrics 部署文件
dashboard-metrics.yaml
## Dashboard Metrics Service
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: dashboard-metrics-scraper
name: dashboard-metrics-scraper
namespace: kube-system
spec:
ports:
- port: 8000
targetPort: 8000
selector:
k8s-app: dashboard-metrics-scraper
---
## Dashboard Metrics Deployment
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
k8s-app: dashboard-metrics-scraper
name: dashboard-metrics-scraper
namespace: kube-system
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: dashboard-metrics-scraper
template:
metadata:
labels:
k8s-app: dashboard-metrics-scraper
annotations:
seccomp.security.alpha.kubernetes.io/pod: 'runtime/default'
spec:
serviceAccountName: kubernetes-dashboard
containers:
- name: dashboard-metrics-scraper
image: kubernetesui/metrics-scraper:v1.0.4
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: true
runAsUser: 1001
runAsGroup: 2001
ports:
- containerPort: 8000
protocol: TCP
resources:
limits:
cpu: 1000m
memory: 512Mi
requests:
cpu: 1000m
memory: 512Mi
livenessProbe:
httpGet:
scheme: HTTP
path: /
port: 8000
initialDelaySeconds: 30
timeoutSeconds: 30
volumeMounts:
- mountPath: /tmp
name: tmp-volume
- name: localtime
readOnly: true
mountPath: /etc/localtime
volumes:
- name: tmp-volume
emptyDir: {}
- name: localtime
hostPath:
type: File
path: /etc/localtime
nodeSelector:
"beta.kubernetes.io/os": linux
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
部署 Dashboard Metrics
$ kubectl apply -f dashboard-metrics.yaml
5、創建訪問的 ServiceAccount
創建一個綁定 admin 權限的 ServiceAccount,獲取其 Token 用於訪問看板。
創建 Dashboard ServiceAccount 部署文件
dashboard-token.yaml
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: admin
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
roleRef:
kind: ClusterRole
name: cluster-admin
apiGroup: rbac.authorization.k8s.io
subjects:
- kind: ServiceAccount
name: admin
namespace: kube-system
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: admin
namespace: kube-system
labels:
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
部署訪問的 ServiceAccount
$ kubectl apply -f dashboard-token.yaml
獲取 Token
$ kubectl describe secret/$(kubectl get secret -n kube-system |grep admin|awk '{print $1}') -n kube-system
token:
eyJhbGciOiJSUzI1NiIsImtpZCI6Ikp2bV9pZmNIR0xqLUxRREd3QlRzNU1pdnBkYnMxTXRlWG15alBidW0xNTAifQ.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi10b2tlbi1zandkdiIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VydmljZS1hY2NvdW50Lm5hbWUiOiJhZG1pbiIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VydmljZS1hY2NvdW50LnVpZCI6IjUxOTAxNmFkLTU3YjEtNDkzYS04ZGZiLTM2Mzg3NTIwODgwNiIsInN1YiI6InN5c3RlbTpzZXJ2aWNlYWNjb3VudDprdWJlLXN5c3RlbTphZG1pbiJ9.I4voTZHn83jPe7apabqOtTjsBuj0uEbkgQGu1fl2tAbbpocg89NjN-DrTkyrETa7qDVp2bmXCHbIbiJU64xlfifCgNFgO0HnWqvuMgztYnYMUpbYSRuQVumn-WCDsIxBnfK-lIbhdSGZZVS66PK4Rwlf4hQHdE_3oclzBYnoz_i11xoFaDDUhhSLxmIDuBA-HoR-n_LJRDtJEqD7VmCTiDkUECxVpIM2oQtVb-nLxuBQg7M7rsbdWFsp5MJ7f-AdRBFgszEQaezBCt4kf0Uuakl6AC_0fDGjwEo04M12Md5Q7JOkyUNKgPbw0S3p8rxuw07I_LBipTIW8Sznll_wzw
四、登錄新版本 Dashboard 查看
本人的 Kubernetes 集羣地址爲”192.168.0.155”並且在 Service 中設置了 NodePort 端口爲 30001 和類型爲 NodePort 方式訪問 Dashboard ,所以訪問地址:https://192.168.0.155:30001 進入 Kubernetes Dashboard 頁面,然後輸入上一步中創建的 ServiceAccount 的 Token 進入 Dashboard,可以看到新的 Dashboard
跟上一個版本比較,整體風格更加簡潔,並且,可以感受到的是這個頁面比以前訪問速度更加快速(估計是加了緩存),除了之外還增加了:
- 新增黑色主題
- 新增對CRD的管理
- 新增對集羣角色的編輯
- 新增對 kubernetes 對象以 yaml 格式進行編輯
- 修改集羣資源指標的監控監控信息以及看板樣式
查看設置
查看個節點的資源情況
查看node2的資源情況
五、部署 Metrics Server 爲 Dashboard 提供指標數據
Dashboard 已經部署完成,不過登錄 Dashboard 後可以看到:
這些欄數據顯示都是空,這是由於 Dashboard 的指標部署需要從 Metrics Server 中獲取,Dashboard 該版本另一個組件 kubernetes-metrics-scraper 就是用於從 Metrics Server 獲取指標的適配器。之前我們已經部署 kubernetes-metrics-scraper 組件,接下來只要再部署 Metrics Server 組件就能獲取系統指標數據,供 Dashboard 繪製圖形,部署 Metrics Server 可以參考:
https://blog.csdn.net/baidu_38432732/article/details/105742271
當按照上面部署完成後,等一段時間,再刷新 Dashboard 界面,可以觀察到如下界面: