该安装基于Centos7 ，使用阿里云的源，kubernetes版本1.12.3
添加k8s软件源
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
exclude=kube*
EOF
安装依赖软件
yum install -y yum-utils device-mapper-persistent-data lvm2
docker软件源
yum-config-manager -y --add-repo
安装docker 18.06.1.ce
yum makecache fast && yum -y install docker-ce-18.06.1.ce
创建 /etc/docker 目录.
mkdir /etc/docker
mkdir -p /etc/systemd/system/docker.service.d
重启 docker.
systemctl daemon-reload
systemctl enable docker
systemctl restart docker
systemctl status docker
systemctl disable firewalld
systemctl stop firewalld
禁用SELinux及交换分区
setenforce 0
sed -i 's/^SELINUX=.*$/SELINUX=permissive/' /etc/selinux/config
swapoff -a
安装kubernetes
yum install -y kubelet-1.12.3 kubeadm-1.12.3 kubectl-1.12.3 --disableexcludes=kubernetes
systemctl enable kubelet && systemctl start kubelet
cat <<EOF > /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system
下载k8s.1.12.3所需要的镜像列表
echo 'docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver-amd64:v1.12.3
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager-amd64:v1.12.3
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler-amd64:v1.12.3
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy-amd64:v1.12.3
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/etcd-amd64:3.2.24
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.1
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.2.2
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.2.3
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.2.4
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.1
k8s.gcr.io/pause:3.1
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.2.2
k8s.gcr.io/coredns:1.2.2
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.2.3
k8s.gcr.io/coredns:1.2.3
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.2.4
k8s.gcr.io/coredns:1.2.4
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/etcd-
amd64:3.2.24 k8s.gcr.io/etcd:3.2.24
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler-amd64:v1.12.3 k8s.gcr.io/kube-scheduler:v1.12.3
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager-amd64:v1.12.3 k8s.gcr.io/kube-controller-manager:v1.12.3
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver-amd64:v1.12.3 k8s.gcr.io/kube-apiserver:v1.12.3
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy-amd64:v1.12.3 k8s.gcr.io/kube-proxy:v1.12.3' > ~/down-images.sh
chmod +777 ~/down-images.sh
sh ~/down-images.sh
以上步骤要在所有节点上执行
初始化k8s
这一步只需要在Master节点上执行
sysctl net.bridge.bridge-nf-call-iptables=1
kubeadm init --kubernetes-version=1.12.3 --pod-network-cidr=10.244.0.0/16 --apiserver-advertise-address=192.168.9.246
这个地方的192.168.9.246改成自己master的节点的IP地址
根据执行成功后的提示信息，执行以下步骤，如果执行错误，执行 kubeadm reset后在重新执行
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
在其他slave节点执行：
kubeadm join 192.168.9.246:6443 --token vldt2a.tuo0oe0z6n6lal5m --discovery-token-ca-cert-hash
sha256:981c9a9d29a921d0519c3e800e2d16cb40760678ab0783bdf6a7e9d7405a50bf
将节点加入到集群中，这句是在集群初始化成功后，最后有显示，拷贝到slave节点上执行就行了
如果是节点加入，因为token是有期限的，需要重新生成token
解决方法如下：
kubeadm token create
openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //'
用红色标出的部分替换原先init命令里的对应部分就可以了。
# 安装k8s-dashboard扩展
kubectl apply -f ~/kubernetes-dashboard.yaml
kubectl apply -f ~/kubernetes-dashboard-admin.rbac.yaml
# 完成后等待pod:dashboard创建启动
# 查看pod状态
kubectl get pods -n kube-system
# 查看service状态
kubectl get service -n kube-system
#打开浏览器：访问 ：https://localhost:30001，使用token登录，token查看方法如下
#kubectl -n kube-system get secret
#kubectl -n kube-system describe secret kubernetes-dashboard-admin-token-skhfh
#{上条命令输出的结果中复制的类似kubernetes-dashboard-admin-token-skhfh的key字符串到这里替换}
#复制tokdn数据到登录框内登录即可登录
在浏览器中输入https://IP:30001就可以看到下面的界面
选择令牌，将我们上面获取的令牌复制黏贴到这里点击登录即可
kubernetes-dashboard.yaml文件内容：
# 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
#
# 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/v1
kind: RoleBinding
metadata:
name: kubernetes-dashboard-minimal
namespace: kube-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: kubernetes-dashboard-minimal
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kube-system
---
# ------------------- Dashboard Deployment ------------------- #
kind: Deployment
apiVersion: apps/v1beta2
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: mirrorgooglecontainers/kubernetes-dashboard-amd64:v1.8.3
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:
type: NodePort
ports:
- port: 443
targetPort: 8443
nodePort: 30001
selector:
k8s-app: kubernetes-dashboard
kubernetes-dashboard-admin.rbac.yaml内容：
---
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-admin
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-admin
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard-admin
namespace: kube-system
---
