net.ipv4.ip_forward = 1
EOF
# sysctl -p
# yum install -y wget
# mkdir -p /etc/yum.repos.d/bak
# cd /etc/yum.repos.d/
# mv * bak
# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.cloud.tencent.com/repo/centos7_base.repo
# wget -O /etc/yum.repos.d/epel.repo http://mirrors.cloud.tencent.com/repo/epel-7.repo
# yum clean all && yum makecache
# cat > /etc/yum.repos.d/kubernetes.repo << EOF
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpghttps://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
# wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo
# yum install -y docker-ce-18.06.1.ce-3.el7
# systemctl enable docker && systemctl start docker
# yum install -y kubelet kubeadm kubectl
# systemctl enable kubelet
在master上进行操作
# kubeadm init --kubernetes-version=1.14.2 --apiserver-advertise-address=172.20.20.171 --image-repository registry.aliyuncs.com/google_containers --service-cidr=172.100.0.0/16 --pod-network-cidr=10.244.0.0/16
Your Kubernetes control-plane has initialized successfully!
To start using your cluster, you need to run the following as a regular user:
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
https://kubernetes.io/docs/concepts/cluster-administration/addons/
Then you can join any number of worker nodes by running the following on each as root:
kubeadm join 172.20.20.171:6443 --token 7d6gy1.wcroc19bpsbpx7bp \
--discovery-token-ca-cert-hash sha256:654a19df7e29ccd08b993014852a678893aeaa5241362767c0c3d59743a16ec9
# mkdir -p $HOME/.kube
# sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
# chown $(id -u):$(id -g) $HOME/.kube/config
[root@node171 ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
node171 NotReady master 2m26s v1.14.3
[root@node171 ~]# kubectl get cs
NAME STATUS MESSAGE ERROR
scheduler Healthy ok
controller-manager Healthy ok
etcd-0 Healthy {"health":"true"}
部署flannel网络
# wgethttps://raw.githubusercontent.com/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml
kubectl create -f ./kube-flannel.yml
在Node节点上操作
需要master节点上的pods状态都是Running时，才执行如下语句：
# kubeadm join 172.20.20.171:6443 --token 7d6gy1.wcroc19bpsbpx7bp \
--discovery-token-ca-cert-hash sha256:654a19df7e29ccd08b993014852a678893aeaa5241362767c0c3d59743a16ec9
在Master查看集群状态
[root@node171 ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
node171 Ready master 18m v1.14.3
node172 Ready 4m8s v1.14.3
node173 Ready 2m24s v1.14.3
若出现Ready说明集群状态正常
验证Pod以验证集群是否正常
# kubectl create deployment nginx --image=nginx
# kubectl expose deployment nginx --port=80 --type=NodePort
[root@node171 ~]# kubectl get pod,svc
NAME READY STATUS RESTARTS AGE
pod/nginx-65f88748fd-7sthx 0/1 ContainerCreating 0 67s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 169.169.0.1 443/TCP 21m
service/nginx NodePort 169.169.231.102 80:30073/TCP 12s
部署Dashboard
在master上操作
# cat > kubernetes-dashboard.yaml << EOF
# 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.
# ------------------- Dashboard Secret ------------------- #
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-certs
namespace: kube-system
type: Opaque
---
# ------------------- Dashboard Service Account ------------------- #
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
---
# ------------------- Dashboard Role & Role Binding ------------------- #
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: kubernetes-dashboard-minimal
namespace: kube-system
rules:
# Allow Dashboard to create 'kubernetes-dashboard-key-holder' secret.
- apiGroups: [""]
resources: ["secrets"]
verbs: ["create"]
# Allow Dashboard to create 'kubernetes-dashboard-settings' config map.
- apiGroups: [""]
resources: ["configmaps"]
verbs: ["create"]
# 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/v1beta1
kind: ClusterRoleBinding
metadata:
name: kubernetes-dashboard
roleRef:
kind: ClusterRole
name: cluster-admin
apiGroup: rbac.authorization.k8s.io
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kube-system
---
# ------------------- Dashboard Deployment ------------------- #
kind: Deployment
apiVersion: apps/v1
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
spec:
containers:
- name: kubernetes-dashboard
image: loveone/kubernetes-dashboard-amd64:v1.10.1
ports:
- containerPort: 8443
protocol: TCP
args:
- --auto-generate-certificates
# 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
volumes:
- name: kubernetes-dashboard-certs
secret:
secretName: kubernetes-dashboard-certs
- name: tmp-volume
emptyDir: {}
serviceAccountName: kubernetes-dashboard
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
---
# ------------------- Dashboard Service ------------------- #
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
spec:
ports:
- port: 443
targetPort: 8443
nodePort: 30001
type: NodePort
selector:
k8s-app: kubernetes-dashboard
EOF
# kubectl create -f kubernetes-dashboard.yaml
[root@node171 ~]# kubectl get deployment kubernetes-dashboard -n kube-system
NAME READY UP-TO-DATE AVAILABLE AGE
kubernetes-dashboard 1/1 1 1 92s
# kubectl get pods -n kube-system -o wide
# kubectl get services -n kube-system
在浏览器中输入：
https://172.20.20.171:30001
# kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep kubernetes-dashboard-token|awk '{print $1}')|grep token:|awk '{print $2}'
使用得到的值，在下方粘贴过去
最后登录成功界面如下：
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