K8S——关于K8S控制台的yaml文件编写(基于上一章多节点K8S部署)
K8S——关于K8S控制台的yaml文件编写(基于上一章多节点K8S部署)一、yaml文件编写流程二、证书自签一、yaml文件编写流程rbac.yaml---->secret.yaml---->configmap.yaml---->controller.yaml----->dashboard.yaml-------------------------------------
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K8S——关于K8S控制台的yaml文件编写(基于上一章多节点K8S部署)
一、yaml文件编写流程
rbac.yaml---->secret.yaml---->configmap.yaml---->controller.yaml----->dashboard.yaml
#dashboard-rbac.yaml文件
vim dashboard-rbac.yaml
kind: Role #角色
apiVersion: rbac.authorization.k8s.io/v1 #api版本号(有专门的版本号控制)
metadata: #源信息
labels:
k8s-app: kubernetes-dashboard
addonmanager.kubernetes.io/mode: Reconcile
name: kubernetes-dashboard-minimal #创建的资源名称
namespace: kube-system
rules: #参数信息的传入
# Allow Dashboard to get, update and delete Dashboard exclusive secrets.
- apiGroups: [""]
resources: ["secrets"]
resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs"]
verbs: ["get", "update", "delete"]
# Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map.
- apiGroups: [""]
resources: ["configmaps"]
resourceNames: ["kubernetes-dashboard-settings"]
verbs: ["get", "update"]
# Allow Dashboard to get metrics from heapster.
- apiGroups: [""]
resources: ["services"]
resourceNames: ["heapster"]
verbs: ["proxy"]
- apiGroups: [""]
resources: ["services/proxy"]
resourceNames: ["heapster", "http:heapster:", "https:heapster:"]
verbs: ["get"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: kubernetes-dashboard-minimal
namespace: kube-system
labels:
k8s-app: kubernetes-dashboard
addonmanager.kubernetes.io/mode: Reconcile
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: kubernetes-dashboard-minimal
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kube-system #名称空间的管理(默认为default)
#创建dashboard-rbac.yaml资源
kubectl create -f dashboard-rbac.yaml
#使用-n 查看Role角色kube-system名称空间中的资源
kubectl get Role -n kube-system
------------------------------------------------------------------------
#dashboard-secret.yaml文件
vim dashboard-secret.yaml
apiVersion: v1
kind: Secret #角色
metadata: #源信息
labels:
k8s-app: kubernetes-dashboard
# Allows editing resource and makes sure it is created first.
addonmanager.kubernetes.io/mode: EnsureExists
name: kubernetes-dashboard-certs #资源名称
namespace: kube-system #命名空间
type: Opaque
--- #--- 分段
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
# Allows editing resource and makes sure it is created first.
addonmanager.kubernetes.io/mode: EnsureExists
name: kubernetes-dashboard-key-holder #密钥
namespace: kube-system
type: Opaque
#创建dashboard-secret.yaml 资源
kubectl create -f dashboard-secret.yaml
kubectl get Secret -n kube-system
------------------------------------------------------------------------
#dashboard-configmap.yaml 配置管理文件
vim dashboard-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
labels:
k8s-app: kubernetes-dashboard
# Allows editing resource and makes sure it is created first.
addonmanager.kubernetes.io/mode: EnsureExists
name: kubernetes-dashboard-settings
namespace: kube-system
#创建dashboard-configmap.yaml资源
kubectl create -f dashboard-configmap.yaml
kubectl get Configmap -n kube-system
------------------------------------------------------------------------
#dashboard-controller.yaml 控制器文件
vim dashboard-controller.yaml
apiVersion: v1
kind: ServiceAccount #控制器名称(服务访问)
metadata:
labels:
k8s-app: kubernetes-dashboard
addonmanager.kubernetes.io/mode: Reconcile
name: kubernetes-dashboard
namespace: kube-system
---
apiVersion: apps/v1
kind: Deployment #控制器名称
metadata:
name: kubernetes-dashboard
namespace: kube-system
labels:
k8s-app: kubernetes-dashboard
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
spec:
selector:
matchLabels:
k8s-app: kubernetes-dashboard
template:
metadata:
labels:
k8s-app: kubernetes-dashboard
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ''
seccomp.security.alpha.kubernetes.io/pod: 'docker/default'
spec:
priorityClassName: system-cluster-critical
containers: #资源指定的名称、镜像
- name: kubernetes-dashboard
image: siriuszg/kubernetes-dashboard-amd64:v1.8.3
resources: #设置了CPU和内存的上限
limits:
cpu: 100m
memory: 300Mi
requests:
cpu: 50m
memory: 100Mi
ports:
- containerPort: 8443 #8443提供对外的端口号(HTTPS协议)
protocol: TCP
args:
# PLATFORM-SPECIFIC ARGS HERE
- --auto-generate-certificates
volumeMounts: #容器卷
- name: kubernetes-dashboard-certs
mountPath: /certs
- name: tmp-volume
mountPath: /tmp
livenessProbe:
httpGet:
scheme: HTTPS
path: /
port: 8443
initialDelaySeconds: 30
timeoutSeconds: 30
volumes:
- name: kubernetes-dashboard-certs
secret:
secretName: kubernetes-dashboard-certs
- name: tmp-volume
emptyDir: {}
serviceAccountName: kubernetes-dashboard
tolerations:
- key: "CriticalAddonsOnly"
operator: "Exists"
#创建 dashboard-controller.yaml 资源
kubectl create -f dashboard-controller.yaml
kubectl get ServiceAccount -n kube-system
kubectl get deployment -n kube-system
------------------------------------------------------------------------
#dashboard-service.yaml 服务
vim dashboard-service.yaml
apiVersion: v1
kind: Service #控制器名称
metadata:
name: kubernetes-dashboard
namespace: kube-system
labels:
k8s-app: kubernetes-dashboard
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
spec:
type: NodePort #提供的形式(访问node节点提供出来的端口,即nodeport
selector:
k8s-app: kubernetes-dashboard
ports:
- port: 443 #内部提供
targetPort: 8443 #Pod内部端口
nodePort: 30001 #节点对外提供的端口(映射端口)
#创建dashboard-service.yaml资源
kubectl create -f dashboard-service.yaml
kubectl get service -n kube-system
------------------------------------------------------------------------
#查看pod资源
kubectl get pods,svc -n kube-system
#查看资源分配的位置
kubectl get pods -n kube-system -o wide
#查看此pod资源的日志
kubectl create clusterrolebinding cluster-system-anonymous --clusterrole=cluster-admin --user=system:anonymous
clusterrolebinding.rbac.authorization.k8s.io/cluster-system-anonymous created
kubectl logs kubernetes-dashboard-65f974f565-bh5zh -n kube-system
二、证书自签
vim dashboard-cert.sh
cat > dashboard-csr.json <<EOF #创建json格式的csr签名文件
{
"CN": "Dashboard",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing"
}
]
}
EOF
K8S_CA=$1
#以下产生CA证书
cfssl gencert -ca=$K8S_CA/ca.pem -ca-key=$K8S_CA/ca-key.pem -config=$K8S_CA/ca-config.json -profile=kubernetes dashboard-csr.json | cfssljson -bare dashboard
#删除原本的证书凭据
kubectl delete secret kubernetes-dashboard-certs -n kube-system
#重新创建一个证书凭据
kubectl create secret generic kubernetes-dashboard-certs --from-file=./ -n kube-system
------》wq
#生成证书
bash dashboard-cert.sh /root/k8s/k8s-cert/
#编辑dashboard-controller.yaml,指向证书位置,完成证书自签
vim dashboard-controller.yaml
----47行左右添加/修改
args:
# PLATFORM-SPECIFIC ARGS HERE
- --auto-generate-certificates
- --tls-key-file=dashboard-key.pem
- --tls-cert-file=dashboard.pem
#重新部署
kubectl apply -f dashboard-controller.yaml
#需要注意一个问题,在重新部署的时候,资源可能会分配到其他节点,再次查看pod资源位置
kubectl get pods -n kube-system -o wide
#生成令牌 k8s-admin.yaml
vim k8s-admin.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: dashboard-admin #创建dashboard-admin的资源,相当于一个管理员账户
namespace: kube-system
---
kind: ClusterRoleBinding #绑定群集用户角色
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: dashboard-admin #群集用户角色其实就是管理员的身份
subjects:
- kind: ServiceAccount
name: dashboard-admin
namespace: kube-system
roleRef:
kind: ClusterRole
name: cluster-admin
apiGroup: rbac.authorization.k8s.io
#先查看secret(安全角色)的命名空间中的资源
kubectl get secret -n kube-system
#生成令牌
kubectl create -f k8s-admin.yaml
#再次查看secret资源
kubectl get secret -n kube-system
#详细查看令牌信息
kubectl describe secret dashboard-admin-token-dpjdk -n kube-system
(最下方为token令牌,进行复制,登录web控制台需要使用)
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