Ubuntu环境Docker+K8s+Dashboard的安装配置(无坑亲测) java

安装之前的准备：安装docker 使用国内 daocloud 一键安装命令：

curl -sSL https://get.daocloud.io/docker | sh

直接从dockerhub下载镜像太慢, 需要配置国内镜像源, 修改daemon.json文件
添加镜像源, luffy使用的是中科大的镜像源

cat </etc/docker/daemon.json { "registry-mirrors": ["https://docker.mirrors.ustc.edu.cn/"] } EOF

启动docker

sudo systemctl daemon-reload sudo systemctl restart docker

安装kubelet,kubectl,kubeadm：打开apt源文件：

vim /etc/apt/sources.list

添加如下：

deb https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial main

然后更新apt源：

apt-get update

ps:如果出现下面错误
W: GPG error: https://mirrors.aliyun.com/ku... kubernetes-xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY FEEA9169307EA071 NO_PUBKEY 8B57C5C2836F4BEB

执行安装GPG秘钥：

curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg |sudo apt-key add -

在进行

apt-get update

安装kube：

apt-get install -y kubelet=1.18.0-00 kubeadm=1.18.0-00 kubectl=1.18.0-00

启动master节点查看镜像列表

kubeadm config images list --kubernetes-version v1.18.0

拉取镜像：

docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.18.0 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.18.0 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.18.0 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.18.0 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.2 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.4.3-0 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.6.7

给镜像改名：

docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.18.0 k8s.gcr.io/kube-apiserver:v1.18.0 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.18.0 k8s.gcr.io/kube-controller-manager:v1.18.0 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.18.0 k8s.gcr.io/kube-scheduler:v1.18.0 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.18.0 k8s.gcr.io/kube-proxy:v1.18.0 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.2 k8s.gcr.io/pause:3.2 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.4.3-0 k8s.gcr.io/etcd:3.4.3-0 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.6.7 k8s.gcr.io/coredns:1.6.7

注意：以上三步关于镜像的操作也可以直接写到一个脚本里，for循环来执行，详情可以查询脚本操作。

vim k8s-pull.sh

添加内容：

#将对应的包, 从国内镜像上拉下来 foriin`kubeadm config images list --kubernetes-version v1.18.0`; do imageName=${i#k8s.gcr.io/} docker pull registry.aliyuncs.com/google_containers/$imageName docker tag registry.aliyuncs.com/google_containers/$imageName k8s.gcr.io/$imageName docker rmi registry.aliyuncs.com/google_containers/$imageName done;

执行脚本

sh k8s-pull.sh

镜像下载完成，可以启动master节点了：

kubeadm init --kubernetes-version=v1.18.0 --pod-network-cidr=10.10.0.0/16 --apiserver-advertise-address=172.18.10.172 --ignore-preflight-errors=NumCPU

注意172.18.10.172是我的服务器内网地址，注意替换，--ignore-preflight-errors=NumCPU 是因为我的服务器是买的低配单核，加上就忽略启动是的cpu核心数报错，多核的不用加这个

设置配置文件如下：

mkdir -p /root/.kube cp -i /etc/kubernetes/admin.conf /root/.kube/config chown root:root /root/.kube/config

设置网络插件

export KUBECONFIG=/etc/kubernetes/admin.conf kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

mkdir -p /etc/cni/net.d

编辑网络通道配置列表（没有会默认创建）

vi 10-flannel.conflist

{ undefined"name": "cbr0", "plugins": [ { undefined"type": "flannel", "delegate": { undefined"hairpinMode": true, "isDefaultGateway": true } }, { undefined"type": "portmap", "capabilities": { undefined"portMappings": true } } ] }

多次刷新查看是否relay

kubectl get nodes

显示Ready表示执行成功

NAMESTATUSROLESAGEVERSION izwz91w9jegcgf28ttbe2yzReadymaster46hv1.18.0

重启kubelet

systemctl daemon-reload systemctl restart kubelet

安装 kubernetes-dashboard 下载包

wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0/aio/deploy/recommended.yaml

可以修改下名字kubernetes-dashboard，编辑配置文件

vim kubernetes-dashboard.yaml

下面我这个已经修改好了没有坑，注意下端口就行

# Copyright 2017 The Kubernetes Authors. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # #http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License.apiVersion: v1 kind: Namespace metadata: name: kubernetes-dashboard---apiVersion: v1 kind: ServiceAccount metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kubernetes-dashboard---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: 30443 # 新增 selector: k8s-app: kubernetes-dashboard---apiVersion: v1 kind: Secret metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-certs namespace: kubernetes-dashboard type: Opaque---apiVersion: v1 kind: Secret metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-csrf namespace: kubernetes-dashboard type: Opaque data: csrf: ""---apiVersion: v1 kind: Secret metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-key-holder namespace: kubernetes-dashboard type: Opaque---kind: ConfigMap apiVersion: v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-settings namespace: kubernetes-dashboard---kind: Role apiVersion: rbac.authorization.k8s.io/v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kubernetes-dashboard rules: # Allow Dashboard to get, update and delete Dashboard exclusive secrets. - apiGroups: [""] resources: ["secrets"] resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs", "kubernetes-dashboard-csrf"] 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. - 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"]---kind: ClusterRole apiVersion: rbac.authorization.k8s.io/v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard rules: # Allow Metrics Scraper to get metrics from the Metrics server - 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: kubernetes-dashboard roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: kubernetes-dashboard subjects: - kind: ServiceAccount name: kubernetes-dashboard namespace: kubernetes-dashboard---apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: kubernetes-dashboard roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: kubernetes-dashboard subjects: - kind: ServiceAccount name: kubernetes-dashboard namespace: kubernetes-dashboard---kind: Deployment apiVersion: apps/v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kubernetes-dashboard spec: replicas: 1 revisionHistoryLimit: 10 selector: matchLabels: k8s-app: kubernetes-dashboard template: metadata: labels: k8s-app: kubernetes-dashboard spec: containers: - name: kubernetes-dashboard image: kubernetesui/dashboard:v2.0.0 imagePullPolicy: Always ports: - containerPort: 8443 protocol: TCP args: - --auto-generate-certificates - --namespace=kubernetes-dashboard # Uncomment the following line to manually specify Kubernetes API server Host # If not specified, Dashboard will attempt to auto discover the API server and connect # to it. Uncomment only if the default does not work. # - --apiserver-host=http://my-address:port volumeMounts: - name: kubernetes-dashboard-certs mountPath: /certs # Create on-disk volume to store exec logs - mountPath: /tmp name: tmp-volume livenessProbe: httpGet: scheme: HTTPS path: / port: 8443 initialDelaySeconds: 30 timeoutSeconds: 30 securityContext: allowPrivilegeEscalation: false readOnlyRootFilesystem: true runAsUser: 1001 runAsGroup: 2001 volumes: - name: kubernetes-dashboard-certs secret: secretName: kubernetes-dashboard-certs - name: tmp-volume emptyDir: {} serviceAccountName: kubernetes-dashboard nodeSelector: "kubernetes.io/os": linux # Comment the following tolerations if Dashboard must not be deployed on master tolerations: - key: node-role.kubernetes.io/master effect: NoSchedule---kind: Service apiVersion: v1 metadata: labels: k8s-app: dashboard-metrics-scraper name: dashboard-metrics-scraper namespace: kubernetes-dashboard spec: ports: - port: 8000 targetPort: 8000 selector: k8s-app: dashboard-metrics-scraper---kind: Deployment apiVersion: apps/v1 metadata: labels: k8s-app: dashboard-metrics-scraper name: dashboard-metrics-scraper namespace: kubernetes-dashboard 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: containers: - name: dashboard-metrics-scraper image: kubernetesui/metrics-scraper:v1.0.4 ports: - containerPort: 8000 protocol: TCP livenessProbe: httpGet: scheme: HTTP path: / port: 8000 initialDelaySeconds: 30 timeoutSeconds: 30 volumeMounts: - mountPath: /tmp name: tmp-volume securityContext: allowPrivilegeEscalation: false readOnlyRootFilesystem: true runAsUser: 1001 runAsGroup: 2001 serviceAccountName: kubernetes-dashboard nodeSelector: "kubernetes.io/os": linux # Comment the following tolerations if Dashboard must not be deployed on master tolerations: - key: node-role.kubernetes.io/master effect: NoSchedule volumes: - name: tmp-volume emptyDir: {}

【Ubuntu环境Docker+K8s+Dashboard的安装配置(无坑亲测)】更新dashboard配置