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dashboard_op.md

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Kubernetes Dashboard

chattr -i /etc/passwd* && chattr -i /etc/group* && chattr -i /etc/shadow* && chattr -i /etc/gshadow*

cd /etc/ansible/
ansible-playbook 07.cluster-addon.yml

ansible-playbook 90.setup.yml

systemctl restart iptables
systemctl restart kube-scheduler
systemctl restart kube-controller-manager
systemctl restart kube-apiserver
systemctl restart etcd
systemctl restart docker

systemctl restart iptables
systemctl restart kubelet
systemctl restart kube-proxy
systemctl restart etcd
systemctl restart docker

1、查看deployment

[root@node1 ~]# kubectl get deployment -A
NAMESPACE     NAME                         READY   UP-TO-DATE   AVAILABLE   AGE
default       my-mc-deployment             3/3     3            3           2d18h
default       net                          3/3     3            3           4d15h
default       net-test                     2/2     2            2           4d16h
default       test-hello                   1/1     1            1           6d
default       test-jrr                     1/1     1            1           43h
kube-system   coredns                      0/2     2            0           4d15h
kube-system   heapster                     1/1     1            1           8d
kube-system   kubernetes-dashboard         0/1     1            0           4m42s
kube-system   metrics-server               0/1     1            0           8d
kube-system   traefik-ingress-controller   1/1     1            1           2d18h

#查看deployment详情
[root@node1 ~]# kubectl describe deployment kubernetes-dashboard -n kube-system

#删除deployment
[root@node1 ~]# kubectl delete deployment kubernetes-dashboard -n kube-system
deployment.extensions "kubernetes-dashboard" deleted

2、查看Service信息

[root@tw06a2753 ~]# kubectl get service -A -o wide
NAMESPACE     NAME                      TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                       AGE     SELECTOR
default       kubernetes                ClusterIP   172.68.0.1       <none>        443/TCP                       8d      <none>
default       my-mc-service             ClusterIP   172.68.113.166   <none>        60001/TCP,60002/TCP           3d14h   app=products,department=sales
default       nginx-service             ClusterIP   172.68.176.9     <none>        80/TCP                        5d      app=nginx
default       php-service               ClusterIP   172.68.210.6     <none>        9898/TCP                      5d19h   app=nginx-php
default       test-hello                ClusterIP   172.68.248.205   <none>        80/TCP                        6d      run=test-hello
default       test-jrr-php-service      ClusterIP   172.68.58.202    <none>        9090/TCP                      43h     app=test-jrr-nginx-php
kube-system   heapster                  ClusterIP   172.68.19.198    <none>        80/TCP                        8d      k8s-app=heapster
kube-system   kube-dns                  ClusterIP   172.68.0.2       <none>        53/UDP,53/TCP,9153/TCP        4d15h   k8s-app=kube-dns
kube-system   kubernetes-dashboard      NodePort    172.68.46.171    <none>        443:29107/TCP                 6m31s   k8s-app=kubernetes-dashboard
kube-system   metrics-server            ClusterIP   172.68.31.222    <none>        443/TCP                       8d      k8s-app=metrics-server
kube-system   traefik-ingress-service   NodePort    172.68.124.46    <none>        80:33813/TCP,8080:21315/TCP   2d18h   k8s-app=traefik-ingress-lb
kube-system   traefik-web-ui            ClusterIP   172.68.226.139   <none>        80/TCP                        2d19h   k8s-app=traefik-ingress-lb

#查看service详情
[root@node1 ~]# kubectl describe svc kubernetes-dashboard -n kube-system

#删除service
[root@node1 ~]# kubectl delete svc kubernetes-dashboard -n kube-system
service "kubernetes-dashboard" deleted

3、查看Service对应的后端节点

#查看kubernetes-dashboard
[root@node1 ~]# kubectl describe svc kubernetes-dashboard -n kube-system

#查看服务my-mc-service
[root@node1 ~]# kubectl describe svc my-mc-service -n default
Name:              my-mc-service
Namespace:         default
Labels:            <none>
Annotations:       kubectl.kubernetes.io/last-applied-configuration:
                     {"apiVersion":"v1","kind":"Service","metadata":{"annotations":{},"name":"my-mc-service","namespace":"default"},"spec":{"ports":[{"name":"m...
Selector:          app=products,department=sales
Type:              ClusterIP
IP:                172.68.113.166
Port:              my-first-port  60001/TCP
TargetPort:        50001/TCP
Endpoints:         172.20.1.209:50001,172.20.2.206:50001,172.20.2.208:50001
Port:              my-second-port  60002/TCP
TargetPort:        50002/TCP
Endpoints:         172.20.1.209:50002,172.20.2.206:50002,172.20.2.208:50002  ---发现这个service有这3个后端
Session Affinity:  None
Events:            <none>

4、Dashboard运行在哪个节点

#发现Dashboard是运行在node3节点
[root@linux-node1 ~]# kubectl get pod -n kube-system -o wide
NAME                                    READY     STATUS    RESTARTS   AGE       IP          NODE
kubernetes-dashboard-66c9d98865-bqwl5   1/1       Running   0          1h        10.2.76.3   192.168.56.13

#查看Dashboard运行日志
[root@linux-node1 ~]# kubectl logs pod/kubernetes-dashboard-66c9d98865-bqwl5 -n kube-system

#查看Dashboard服务IP(可以访问任意node节点的34696端口就可以访问到Dashboard页面 https://192.168.56.13:34696/#!/overview?namespace=default,如何master节点安装了kube-proxy也可以访问)
[root@linux-node1 ~]# kubectl get service -n kube-system
NAME                   TYPE       CLUSTER-IP   EXTERNAL-IP   PORT(S)         AGE
kubernetes-dashboard   NodePort   10.1.36.42   <none>        443:34696/TCP   1h

https://192.168.56.13:34696/#!/overview?namespace=default

dashboard登录

访问Dashboard

https://192.168.56.11:6443/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy 用户名:admin 密码：admin 选择令牌模式登录。

获取Token

[root@linux-node1 ~]# kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}')
Name:         admin-user-token-c97bl
Namespace:    kube-system
Labels:       <none>
Annotations:  kubernetes.io/service-account.name=admin-user
              kubernetes.io/service-account.uid=379208ff-cb86-11e8-9f1c-080027dc9cd8

Type:  kubernetes.io/service-account-token

Data
====
ca.crt:     1359 bytes
namespace:  11 bytes
token:      eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi11c2VyLXRva2VuLWM5N2JsIiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImFkbWluLXVzZXIiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiIzNzkyMDhmZi1jYjg2LTExZTgtOWYxYy0wODAwMjdkYzljZDgiLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6a3ViZS1zeXN0ZW06YWRtaW4tdXNlciJ9.LopL7AD9feBZmhAuAUlPNjfthlJ1lJAPG6VXgBl-MZdofZpqNU9m-o-7M4hHa5AXkpeLvQrA1UKWWSR9eWEN06ugIkcH4Pk-tKrSVQUM6CDaE7eBdK91x1ltTonLz62_z_X8IvRYx1piv3wRUijoyRHCdziBnOhg67sT974CSPoRSOpl7ZR0Kn_L0LYRMOE9xfU3w4-sCpSx-jgc5oysAix95NqZgIkaZ6TRANpCnHE66fqL6yUwQxQ5yt7pw7J2iuSE3OxPU_cKArjYlWUvr72zG3SxZaR7dzQEggwmjSSeHRs0OK0968QAtCca1NTmcPaTtKhXYfXXdtusVCx7bA

dashboard预览