@n 剩余文档

# 纯量, 就是指的一个简单的值，字符串、布尔值、整数、浮点数、Null、时间、日期
# 1 布尔类型
c1: true (或者True)
# 2 整型
c2: 234
# 3 浮点型
c3: 3.14
# 4 null类型 
c4: ~  # 使用~表示null
# 5 日期类型
c5: 2018-02-17    # 日期必须使用ISO 8601格式，即yyyy-MM-dd
# 6 时间类型
c6: 2018-02-17T15:02:31+08:00  # 时间使用ISO 8601格式，时间和日期之间使用T连接，最后使用+代表时区
# 7 字符串类型
c7: heima     # 简单写法，直接写值 , 如果字符串中间有特殊字符，必须使用双引号或者单引号包裹 
c8: line1
    line2     # 字符串过多的情况可以拆成多行，每一行会被转化成一个空格

# 对象
# 形式一(推荐):
heima:
  age: 15
  address: Beijing
# 形式二(了解):
heima: {age: 15,address: Beijing}

# 数组
# 形式一(推荐):
address:
  - 顺义
  - 昌平  
# 形式二(了解):
address: [顺义,昌平]

# 查看所有pod
kubectl get pod 
 
# 查看某个pod
kubectl get pod pod_name
 
# 查看某个pod,以yaml格式展示结果
kubectl get pod pod_name -o yaml

# 创建一个namespace
[root@master ~]# kubectl create namespace dev
namespace/dev created
 
# 获取namespace
[root@master ~]# kubectl get ns
NAME              STATUS   AGE
default           Active   21h
dev               Active   21s
kube-node-lease   Active   21h
kube-public       Active   21h
kube-system       Active   21h
 
# 在此namespace下创建并运行一个nginx的Pod
[root@master ~]# kubectl run pod --image=nginx:latest -n dev
kubectl run --generator=deployment/apps.v1 is DEPRECATED and will be removed in a future version. Use kubectl run --generator=run-pod/v1 or kubectl create instead.
deployment.apps/pod created
 
# 查看新创建的pod
[root@master ~]# kubectl get pod -n dev
NAME  READY   STATUS    RESTARTS   AGE
pod   1/1     Running   0          21s
 
# 删除指定的pod
[root@master ~]# kubectl delete pod pod-864f9875b9-pcw7x
pod "pod" deleted
 
# 删除指定的namespace
[root@master ~]# kubectl delete ns dev
namespace "dev" deleted

apiVersion: v1
kind: Namespace
metadata:
  name: dev
 
---
 
apiVersion: v1
kind: Pod
metadata:
  name: nginxpod
  namespace: dev
spec:
  containers:
  - name: nginx-containers
    image: nginx:latest

[root@master ~]# kubectl create -f nginxpod.yaml
namespace/dev created
pod/nginxpod created

[root@master ~]#  kubectl get -f nginxpod.yaml
NAME            STATUS   AGE
namespace/dev   Active   18s
 
NAME            READY   STATUS    RESTARTS   AGE
pod/nginxpod    1/1     Running   0          17s

[root@master ~]# kubectl delete -f nginxpod.yaml
namespace "dev" deleted
pod "nginxpod" deleted

# 首先执行一次kubectl apply -f yaml文件，发现创建了资源
[root@master ~]#  kubectl apply -f nginxpod.yaml
namespace/dev created
pod/nginxpod created
 
# 再次执行一次kubectl apply -f yaml文件，发现说资源没有变动
[root@master ~]#  kubectl apply -f nginxpod.yaml
namespace/dev unchanged
pod/nginxpod unchanged

总结:
    其实声明式对象配置就是使用apply描述一个资源最终的状态（在yaml中定义状态）
    使用apply操作资源：
        如果资源不存在，就创建，相当于 kubectl create
        如果资源已存在，就更新，相当于 kubectl patch

scp  -r  HOME/.kube   node1: HOME/

apiVersion: v1
kind: Pod
metadata:
  name: volume-emptydir
  namespace: dev
spec:
  containers:
  - name: nginx
    image: nginx:1.17.1
    ports:
    - containerPort: 80
    volumeMounts:  # 将 logs-volume 挂在到 nginx 容器中，对应的目录为 /var/log/nginx
    - name: logs-volume
      mountPath: /var/log/nginx
  - name: busybox
    image: busybox:1.30
    command: ["/bin/sh","-c","tail -f /logs/access.log"] # 初始命令，动态读取指定文件中内容
    volumeMounts:  # 将 logs-volume 挂在到 busybox 容器中，对应的目录为 /logs
    - name: logs-volume
      mountPath: /logs
  volumes: # 声明 volume， name 为 logs-volume，类型为 emptyDir
  - name: logs-volume
    emptyDir: {}

# 创建 Pod
[ root@k8s-master01 ~]# kubectl create -f volume-emptydir.yaml
pod/volume-emptydir created
 
# 查看 pod
[ root@k8s-master01 ~]# kubectl get pods volume-emptydir -n dev -o wide
NAME                  READY   STATUS    RESTARTS   AGE      IP       NODE   ...... 
volume-emptydir       2/2     Running   0          97s   10.42.2.9   node1  ......
 
# 通过 podIp 访问 nginx
[ root@k8s-master01 ~]# curl 10.42.2.9
......
 
# 通过 kubectl logs 命令查看指定容器的标准输出
[ root@k8s-master01 ~]# kubectl logs -f volume-emptydir -n dev -c busybox
10.42.1.0 - - [27/Jun/2021:15:08:54 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.29.0" "-"

apiVersion: v1
kind: Pod
metadata:
  name: volume-hostpath
  namespace: dev
spec:
  containers:
  - name: nginx
    image: nginx:1.17.1
    ports:
    - containerPort: 80
    volumeMounts:
    - name: logs-volume
      mountPath: /var/log/nginx
  - name: busybox
    image: busybox:1.30
    command: ["/bin/sh","-c","tail -f /logs/access.log"]
    volumeMounts:
    - name: logs-volume
      mountPath: /logs
  volumes:
  - name: logs-volume
    hostPath: 
      path: /root/logs
      type: DirectoryOrCreate  # 目录存在就使用，不存在就先创建后使用

# 创建 Pod
[ root@k8s-master01 ~]# kubectl create -f volume-hostpath.yaml
pod/volume-hostpath created
 
# 查看 Pod
[ root@k8s-master01 ~]# kubectl get pods volume-hostpath -n dev -o wide
NAME                  READY   STATUS    RESTARTS   AGE   IP             NODE   ......
pod-volume-hostpath   2/2     Running   0          16s   10.42.2.10     node1  ......
 
#访问nginx
[ root@k8s-master01 ~]# curl 10.42.2.10
 
[ root@k8s-master01 ~]# kubectl logs -f volume-emptydir -n dev -c busybox
 
# 接下来就可以去 host 的/root/logs 目录下查看存储的文件了
###  注意: 下面的操作需要到 Pod 所在的节点运行（案例中是 node1）
[ root@node1 ~]# ls /root/logs/
access.log  error.log
 
# 同样的道理，如果在此目录下创建一个文件，到容器中也是可以看到的

apiVersion: v1  
kind: PersistentVolume
metadata:
  name: pv2
spec:
  nfs: # 存储类型，与底层真正存储对应
  capacity:  # 存储能力，目前只支持存储空间的设置
    storage: 2Gi
  accessModes:  # 访问模式
  storageClassName: # 存储类别
  persistentVolumeReclaimPolicy: # 回收策略

# 创建目录
[ root@nfs ~]# mkdir /root/data/{pv1,pv2,pv3} -pv
 
# 暴露服务
[ root@nfs ~]# more /etc/exports
/root/data/pv1     192.168.5.0/24(rw,no_root_squash)
/root/data/pv2     192.168.5.0/24(rw,no_root_squash)
/root/data/pv3     192.168.5.0/24(rw,no_root_squash)
 
# 重启服务
[ root@nfs ~]#  systemctl restart nfs

apiVersion: v1
kind: PersistentVolume
metadata:
  name:  pv1
spec:
  capacity: 
    storage: 1Gi
  accessModes:
  - ReadWriteMany
  persistentVolumeReclaimPolicy: Retain
  nfs:
    path: /root/data/pv1
    server: 192.168.5.6
 
---
 
apiVersion: v1
kind: PersistentVolume
metadata:
  name:  pv2
spec:
  capacity: 
    storage: 2Gi
  accessModes:
  - ReadWriteMany
  persistentVolumeReclaimPolicy: Retain
  nfs:
    path: /root/data/pv2
    server: 192.168.5.6
    
---
 
apiVersion: v1
kind: PersistentVolume
metadata:
  name:  pv3
spec:
  capacity: 
    storage: 3Gi
  accessModes:
  - ReadWriteMany
  persistentVolumeReclaimPolicy: Retain
  nfs:
    path: /root/data/pv3
    server: 192.168.5.6

# 创建 pv
[ root@k8s-master01 ~]# kubectl create -f pv.yaml
persistentvolume/pv1 created
persistentvolume/pv2 created
persistentvolume/pv3 created
 
# 查看 pv
[ root@k8s-master01 ~]# kubectl get pv -o wide
NAME   CAPACITY   ACCESS MODES  RECLAIM POLICY  STATUS      AGE   VOLUMEMODE
pv1    1Gi        RWX            Retain        Available    10s   Filesystem
pv2    2Gi        RWX            Retain        Available    10s   Filesystem
pv3    3Gi        RWX            Retain        Available    9s    Filesystem

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: pvc
  namespace: dev
spec:
  accessModes: # 访问模式
  selector: # 采用标签对 PV 选择
  storageClassName: # 存储类别
  resources: # 请求空间
    requests:
      storage: 5Gi

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: pvc1
  namespace: dev
spec:
  accessModes: 
  - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: pvc2
  namespace: dev
spec:
  accessModes: 
  - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: pvc3
  namespace: dev
spec:
  accessModes: 
  - ReadWriteMany
  resources:
    requests:
      storage: 1Gi

# 创建 pvc
[ root@k8s-master01 ~]# kubectl create -f pvc.yaml
persistentvolumeclaim/pvc1 created
persistentvolumeclaim/pvc2 created
persistentvolumeclaim/pvc3 created
 
# 查看 pvc
[ root@k8s-master01 ~]# kubectl get pvc  -n dev -o wide
NAME   STATUS   VOLUME   CAPACITY   ACCESS MODES   STORAGECLASS   AGE   VOLUMEMODE
pvc1   Bound    pv1      1Gi        RWX                           15s   Filesystem
pvc2   Bound    pv2      2Gi        RWX                           15s   Filesystem
pvc3   Bound    pv3      3Gi        RWX                           15s   Filesystem
 
# 查看 pv
[ root@k8s-master01 ~]# kubectl get pv -o wide
NAME  CAPACITY ACCESS MODES  RECLAIM POLICY  STATUS    CLAIM       AGE     VOLUMEMODE
pv1    1Gi        RWx        Retain          Bound    dev/pvc1    3h37m    Filesystem
pv2    2Gi        RWX        Retain          Bound    dev/pvc2    3h37m    Filesystem
pv3    3Gi        RWX        Retain          Bound    dev/pvc3    3h37m    Filesystem   

apiVersion: v1
kind: Pod
metadata:
  name: pod1
  namespace: dev
spec:
  containers:
  - name: busybox
    image: busybox:1.30
    command: ["/bin/sh","-c","while true;do echo pod1 >> /root/out.txt; sleep 10; done;"]
    volumeMounts:
    - name: volume
      mountPath: /root/
  volumes:
    - name: volume
      persistentVolumeClaim:
        claimName: pvc1
        readOnly: false
---
apiVersion: v1
kind: Pod
metadata:
  name: pod2
  namespace: dev
spec:
  containers:
  - name: busybox
    image: busybox:1.30
    command: ["/bin/sh","-c","while true;do echo pod2 >> /root/out.txt; sleep 10; done;"]
    volumeMounts:
    - name: volume
      mountPath: /root/
  volumes:
    - name: volume
      persistentVolumeClaim:
        claimName: pvc2
        readOnly: false

# 创建 pod
[ root@k8s-master01 ~]# kubectl create -f pods.yaml
pod/pod1 created
pod/pod2 created
 
# 查看 pod
[ root@k8s-master01 ~]# kubectl get pods -n dev -o wide
NAME   READY   STATUS    RESTARTS   AGE   IP            NODE   
pod1   1/1     Running   0          14s   10.244.1.69   node1   
pod2   1/1     Running   0          14s   10.244.1.70   node1  
 
# 查看 pvc
[ root@k8s-master01 ~]# kubectl get pvc -n dev -o wide
NAME   STATUS   VOLUME   CAPACITY   ACCESS MODES      AGE   VOLUMEMODE
pvc1   Bound    pv1      1Gi        RWX               94m   Filesystem
pvc2   Bound    pv2      2Gi        RWX               94m   Filesystem
pvc3   Bound    pv3      3Gi        RWX               94m   Filesystem
 
# 查看 pv
[ root@k8s-master01 ~]# kubectl get pv -n dev -o wide
NAME   CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM       AGE     VOLUMEMODE
pv1    1Gi        RWX            Retain           Bound    dev/pvc1    5h11m   Filesystem
pv2    2Gi        RWX            Retain           Bound    dev/pvc2    5h11m   Filesystem
pv3    3Gi        RWX            Retain           Bound    dev/pvc3    5h11m   Filesystem
 
# 查看 nfs 中的文件存储
[ root@nfs ~]# more /root/data/pv1/out.txt
node1
node1
[ root@nfs ~]# more /root/data/pv2/out.txt
node2
node2

apiVersion: v1
kind: ConfigMap
metadata:
  name: configmap
  namespace: dev
data:
  info: |
    username:admin
    password:123456

# 创建 configmap
[ root@k8s-master01 ~]# kubectl create -f configmap.yaml
configmap/configmap created
 
# 查看 configmap 详情
[ root@k8s-master01 ~]# kubectl describe cm configmap -n dev
Name:         configmap
Namespace:    dev
Labels:       <none>
Annotations:  <none>
 
Data
====
info:
----
username:admin
password:123456
 
Events:  <none>

apiVersion: v1
kind: Pod
metadata:
  name: pod-configmap
  namespace: dev
spec:
  containers:
  - name: nginx
    image: nginx:1.17.1
    volumeMounts: # 将 configmap 挂载到目录
    - name: config
      mountPath: /configmap/config
  volumes: # 引用 configmap
  - name: config
    configMap:
      name: configmap

# 创建 pod
[ root@k8s-master01 ~]# kubectl create -f pod-configmap.yaml
pod/pod-configmap created
 
# 查看 pod
[ root@k8s-master01 ~]# kubectl get pod pod-configmap -n dev
NAME            READY   STATUS    RESTARTS   AGE
pod-configmap   1/1     Running   0          6s
 
#进入容器
[ root@k8s-master01 ~]# kubectl exec -it pod-configmap -n dev /bin/sh
# cd /configmap/config/
# ls
info
# more info
username:admin
password:123456
 
# 可以看到映射已经成功，每个 configmap 都映射成了一个目录
# key--->文件     value---->文件中的内容
# 此时如果更新 configmap 的内容, 容器中的值也会动态更新

[ root@k8s-master01 ~]# echo -n 'admin' | base64 #准备username
YWRtaW4=
[ root@k8s-master01 ~]# echo -n '123456' | base64 #准备password
MTIzNDU2

apiVersion: v1
kind: Secret
metadata:
  name: secret
  namespace: dev
type: Opaque
data:
  username: YWRtaW4=
  password: MTIzNDU2

# 创建 secret
[ root@k8s-master01 ~]# kubectl create -f secret.yaml
secret/secret created
 
# 查看 secret 详情
[ root@k8s-master01 ~]# kubectl describe secret secret -n dev
Name:         secret
Namespace:    dev
Labels:       <none>
Annotations:  <none>
Type:  Opaque
Data
====
password:  6 bytes
username:  5 bytes

apiVersion: v1
kind: Pod
metadata:
  name: pod-secret
  namespace: dev
spec:
  containers:
  - name: nginx
    image: nginx:1.17.1
    volumeMounts: # 将 secret 挂载到目录
    - name: config
      mountPath: /secret/config
  volumes:
  - name: config
    secret:
      secretName: secret

# 创建 pod
[ root@k8s-master01 ~]# kubectl create -f pod-secret.yaml
pod/pod-secret created
 
# 查看 pod
[ root@k8s-master01 ~]# kubectl get pod pod-secret -n dev
NAME            READY   STATUS    RESTARTS   AGE
pod-secret      1/1     Running   0          2m28s
 
# 进入容器，查看 secret 信息，发现已经自动解码了
[ root@k8s-master01 ~]# kubectl exec -it pod-secret /bin/sh -n dev
/ # ls /secret/config/
password  username
/ # more /secret/config/username
admin
/ # more /secret/config/password
123456

# Role 只能对命名空间内的资源进行授权，需要指定 nameapce
kind: Role
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  namespace: dev
  name: authorization-role
rules:
- apiGroups: [""]  # 支持的 API 组列表,"" 空字符串，表示核心 API 群
  resources: ["pods"] # 支持的资源对象列表
  verbs: ["get", "watch", "list"] # 允许的对资源对象的操作方法列表

# ClusterRole 可以对集群范围内资源、跨 namespaces 的范围资源、非资源类型进行授权
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
 name: authorization-clusterrole
rules:
- apiGroups: [""]
  resources: ["pods"]
  verbs: ["get", "watch", "list"]

# RoleBinding 可以将同一 namespace 中的 subject 绑定到某个 Role 下，则此 subject 即具有该 Role 定义的权限
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: authorization-role-binding
  namespace: dev
subjects:
- kind: User
  name: heima
  apiGroup: rbac.authorization.k8s.io
roleRef:
  kind: Role
  name: authorization-role
  apiGroup: rbac.authorization.k8s.io

# ClusterRoleBinding 在整个集群级别和所有 namespaces 将特定的 subject 与 ClusterRole 绑定，授予权限
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
 name: authorization-clusterrole-binding
subjects:
- kind: User
  name: heima
  apiGroup: rbac.authorization.k8s.io
roleRef:
  kind: ClusterRole
  name: authorization-clusterrole
  apiGroup: rbac.authorization.k8s.io

# 虽然 authorization-clusterrole 是一个集群角色，但是因为使用了 RoleBinding
# 所以 heima 只能读取 dev 命名空间中的资源
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: authorization-role-binding-ns
  namespace: dev
subjects:
- kind: User
  name: heima
  apiGroup: rbac.authorization.k8s.io
roleRef:
  kind: ClusterRole
  name: authorization-clusterrole
  apiGroup: rbac.authorization.k8s.io

# 1) 创建证书
[ root@k8s-master01 pki]# cd /etc/kubernetes/pki/
[ root@k8s-master01 pki]# (umask 077;openssl genrsa -out devman.key 2048)
 
# 2) 用 apiserver 的证书去签署
# 2-1) 签名申请，申请的用户是 devman,组是 devgroup
[ root@k8s-master01 pki]# openssl req -new -key devman.key -out devman.csr -subj "/CN=devman/O=devgroup"     
# 2-2) 签署证书
[ root@k8s-master01 pki]# openssl x509 -req -in devman.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out devman.crt -days 3650
 
# 3) 设置集群、用户、上下文信息
[ root@k8s-master01 pki]# kubectl config set-cluster kubernetes --embed-certs=true --certificate-authority=/etc/kubernetes/pki/ca.crt --server= https://192.168.109.100:6443
 
[ root@k8s-master01 pki]# kubectl config set-credentials devman --embed-certs=true --client-certificate=/etc/kubernetes/pki/devman.crt --client-key=/etc/kubernetes/pki/devman.key
 
[ root@k8s-master01 pki]# kubectl config set-context devman@kubernetes --cluster=kubernetes --user=devman
 
# 切换账户到 devman
[ root@k8s-master01 pki]# kubectl config use-context devman@kubernetes
Switched to context " devman@kubernetes ".
 
# 查看 dev 下 pod，发现没有权限
[ root@k8s-master01 pki]# kubectl get pods -n dev
Error from server (Forbidden): pods is forbidden: User "devman" cannot list resource "pods" in API group "" in the namespace "dev"
 
# 切换到 admin 账户
[ root@k8s-master01 pki]# kubectl config use-context kubernetes-admin@kubernetes
Switched to context " kubernetes-admin@kubernetes ".

kind: Role
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  namespace: dev
  name: dev-role
rules:
- apiGroups: [""]
  resources: ["pods"]
  verbs: ["get", "watch", "list"]
  
---
 
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: authorization-role-binding
  namespace: dev
subjects:
- kind: User
  name: devman
  apiGroup: rbac.authorization.k8s.io
roleRef:
  kind: Role
  name: dev-role
  apiGroup: rbac.authorization.k8s.io

[ root@k8s-master01 pki]# kubectl create -f dev-role.yaml
role.rbac.authorization.k8s.io/dev-role created
rolebinding.rbac.authorization.k8s.io/authorization-role-binding created

# 切换账户到 devman
[ root@k8s-master01 pki]# kubectl config use-context devman@kubernetes
Switched to context " devman@kubernetes ".
 
# 再次查看
[ root@k8s-master01 pki]# kubectl get pods -n dev
NAME                                 READY   STATUS             RESTARTS   AGE
nginx-deployment-66cb59b984-8wp2k    1/1     Running            0          4d1h
nginx-deployment-66cb59b984-dc46j    1/1     Running            0          4d1h
nginx-deployment-66cb59b984-thfck    1/1     Running            0          4d1h
 
# 为了不影响后面的学习,切回 admin 账户
[ root@k8s-master01 pki]# kubectl config use-context kubernetes-admin@kubernetes
Switched to context " kubernetes-admin@kubernetes ".

# 下载 yaml
[ root@k8s-master01 ~]# wget  https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0/aio/deploy/recommended.yaml
 
# 修改 kubernetes-dashboard 的 Service 类型
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
spec:
  type: NodePort  # 新增
  ports:
    - port: 443
      targetPort: 8443
      nodePort: 30009  # 新增
  selector:
    k8s-app: kubernetes-dashboard
 
# 部署
[ root@k8s-master01 ~]# kubectl create -f recommended.yaml
 
# 查看 namespace 下的 kubernetes-dashboard 下的资源
[ root@k8s-master01 ~]# kubectl get pod,svc -n kubernetes-dashboard
NAME                                            READY   STATUS    RESTARTS   AGE
pod/dashboard-metrics-scraper-c79c65bb7-zwfvw   1/1     Running   0          111s
pod/kubernetes-dashboard-56484d4c5-z95z5        1/1     Running   0          111s
 
NAME                               TYPE       CLUSTER-IP      EXTERNAL-IP  PORT(S)         AGE
service/dashboard-metrics-scraper  ClusterIP  10.96.89.218    <none>       8000/TCP        111s
service/kubernetes-dashboard       NodePort   10.104.178.171  <none>       443:30009/TCP   111s

# 创建账号
[ root@k8s-master01-1 ~]# kubectl create serviceaccount dashboard-admin -n kubernetes-dashboard
 
# 授权
[ root@k8s-master01-1 ~]# kubectl create clusterrolebinding dashboard-admin-rb --clusterrole=cluster-admin --serviceaccount=kubernetes-dashboard:dashboard-admin
 
# 获取账号 token
[ root@k8s-master01 ~]#  kubectl get secrets -n kubernetes-dashboard | grep dashboard-admin
dashboard-admin-token-xbqhh        kubernetes.io/service-account-token   3      2m35s
 
[ root@k8s-master01 ~]# kubectl describe secrets dashboard-admin-token-xbqhh -n kubernetes-dashboard
Name:         dashboard-admin-token-xbqhh
Namespace:    kubernetes-dashboard
Labels:       <none>
Annotations:  kubernetes.io/service-account.name: dashboard-admin
              kubernetes.io/service-account.uid: 95d84d80-be7a-4d10-a2e0-68f90222d039
 
Type:  kubernetes.io/service-account-token
 
Data
====
namespace:  20 bytes
token:      eyJhbGciOiJSUzI1NiIsImtpZCI6ImJrYkF4bW5XcDhWcmNGUGJtek5NODFuSXl1aWptMmU2M3o4LTY5a2FKS2cifQ.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.NAl7e8ZfWWdDoPxkqzJzTB46sK9E8iuJYnUI9vnBaY3Jts7T1g1msjsBnbxzQSYgAG--cV0WYxjndzJY_UWCwaGPrQrt_GunxmOK9AUnzURqm55GR2RXIZtjsWVP2EBatsDgHRmuUbQvTFOvdJB4x3nXcYLN2opAaMqg3rnU2rr-A8zCrIuX_eca12wIp_QiuP3SF-tzpdLpsyRfegTJZl6YnSGyaVkC9id-cxZRb307qdCfXPfCHR_2rt5FVfxARgg_C0e3eFHaaYQO7CitxsnIoIXpOFNAR8aUrmopJyODQIPqBWUehb7FhlU1DCduHnIIXVC_UICZ-MKYewBDLw
ca.crt:     1025 bytes