Mark-20170807-k8s-假装终于成功安装 dashboard

正确的安装步骤

# 关闭防火墙
systemctl stop firewalld
systemctl disable firewalld

setenforce 0


# master
yum -y install etcd kubernetes-master 

vi /etc/etcd/etcd.conf 
#ETCD_LISTEN_CLIENT_URLS="http://localhost:2379"
ETCD_LISTEN_CLIENT_URLS="http://0.0.0.0:2379"

vi /etc/kubernetes/apiserver
#KUBE_API_ADDRESS="--insecure-bind-address=127.0.0.1"
KUBE_API_ADDRESS="--insecure-bind-address=0.0.0.0"

vi /etc/kubernetes/controller-manager
#KUBE_CONTROLLER_MANAGER_ARGS=""
KUBE_CONTROLLER_MANAGER_ARGS="--node-monitor-grace-period=10s --pod-eviction-timeout=10s"

vi /etc/kubernetes/config
#KUBE_MASTER="--master=http://127.0.0.1:8080"
KUBE_MASTER="--master=http://172.16.232.129:8080"

systemctl enable etcd kube-apiserver kube-scheduler kube-controller-manager 
systemctl start etcd kube-apiserver kube-scheduler kube-controller-manager  

etcdctl mk /coreos.com/network/config '{"Network":"172.17.0.0/16"}'  


# node
yum -y install kubernetes-node flannel  

vi /etc/kubernetes/config
#KUBE_MASTER="--master=http://127.0.0.1:8080"  
KUBE_MASTER="--master=http://172.16.232.129:8080" 

vi /etc/kubernetes/kubelet
KUBELET_HOSTNAME="--hostname-override=172.16.232.129"
KUBELET_API_SERVER="--api-servers=http://172.16.232.129:8080"  
#KUBELET_ARGS=""  
KUBELET_ARGS="--pod-infra-container-image=kubernetes/pause"

vi /etc/sysconfig/flanneld
#FLANNEL_ETCD="http://127.0.0.1:2379"
FLANNEL_ETCD="http://172.16.232.129:2379"
#FLANNEL_ETCD_KEY="/atomic.io/network"
FLANNEL_ETCD_KEY="/coreos.com/network"
FLANNEL_OPTIONS=" -iface=ens33"

systemctl restart flanneld docker
systemctl start kubelet kube-proxy
systemctl enable flanneld kubelet kube-proxy

部分省略，详见以下。。

kubernetes学习1–centOS7.2使用yum安装kubernetes

设置当前 namespace

kubectl config set-context kube-system --namespace=kube-system
kubectl config use-context kube-system

v1.5.2 安装 kube-dashboard 报错

[root@centos kube]# kubectl create -f kube-dashboard_new.yaml
serviceaccount "kubernetes-dashboard" created
Error from server (BadRequest): error when creating "kube-dashboard_new.yaml": ClusterRoleBinding in version "v1beta1" cannot be handled as a ClusterRoleBinding: no kind "ClusterRoleBinding" is registered for version "rbac.authorization.k8s.io/v1beta1"
error validating "kube-dashboard_new.yaml": error validating data: [expected type array, for field spec.template.spec.containers[0].args, got string, found invalid field tolerations for v1.PodSpec]; if you choose to ignore these errors, turn validation off with --validate=false

听说换一个版本，就好了。

wget https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/kubernetes-dashboard-no-rbac.yaml?gitio

wget 的脚本如下：

# Copyright 2015 Google Inc. All Rights Reserved.
#
# 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.

# Configuration to deploy release version of the Dashboard UI.
#
# Example usage: kubectl create -f 

kind: Deployment
apiVersion: extensions/v1beta1
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
      # Comment the following annotation if Dashboard must not be deployed on master
      annotations:
        scheduler.alpha.kubernetes.io/tolerations: |
          [
            {
              "key": "dedicated",
              "operator": "Equal",
              "value": "master",
              "effect": "NoSchedule"
            }
          ]
    spec:
      containers:
      - name: kubernetes-dashboard
        image: gcr.io/google_containers/kubernetes-dashboard-amd64:v1.6.3
        ports:
        - containerPort: 9090
          protocol: TCP
        args:
          # 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
        livenessProbe:
          httpGet:
            path: /
            port: 9090
          initialDelaySeconds: 30
          timeoutSeconds: 30
---
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kube-system
spec:
  ports:
  - port: 80
    targetPort: 9090
  selector:
    k8s-app: kubernetes-dashboard

TASK [atomic-k8s-master-post : Install the k8s dashboard] fails

最后改一下 apiserver 地址(–apiserver-host=http://172.16.232.129:8080)，以及 image 地址 (image:docker.io/ist0ne/kubernetes-dashboard-amd64) ，就可以了。

kubernetes + kubernetes-dashboard 安装和各种踩坑

nodeport 没有分配啊，看来还要改一改，加上一个 type:NodePort 即可。

---
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kube-system
spec:
  type: NodePort
  ports:
  - port: 80
    targetPort: 9090
  selector:
    k8s-app: kubernetes-dashboard

高级的来了，我不能访问装在虚机里的这个端口。==，先规避一下，装个 docker 版本的 vnc 玩玩。这个问题，先 mark 一下。

Mark-20170807-ubuntu vnc on docker

Expose Service

暴露 svc 端口到宿主机上，完美～

kubectl expose pods kubernetes-dashboard-2530647839-b6476 --port=9090 --external-ip=172.16.232.129

Docker 镜像导入导出

docker save eb9a804ae885 > /opt/soft/postgres.img
docker load < postgres.img

vi 跳到行首行尾

0 是移动到行首，$ 是移动到行尾

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