Kubernetes v1.10 快速安装（只需三步）

K8sv1.10快速安装，只需三步即可（执行三个.sh脚本，下面贴出了脚本内容，直接复制即可）

#测试环境centos 7.3 , docker 17.06

• 第一步：初始化环境

~]# vi env_set.sh

#!/bin/bash

#check

[[ $UID -ne 0 ]]&& { echo "Must run in root user !";exit; }

echo '# 基础配置#

#关闭防火墙

#关闭Selinux

#关闭Swap

#内核配置

#防火墙#

systemctl stopfirewalld &>/dev/null

systemctl disablefirewalld &>/dev/null

[[ -f /etc/init.d/ufw]] && { ufw disable;}

[[ -f/etc/init.d/iptables ]] && { /etc/init.d/iptables stop; }

#关闭Selinux

setenforce  0 &>/dev/null

sed -i"s/^SELINUX=enforcing/SELINUX=disabled/g" /etc/sysconfig/selinux

sed -i"s/^SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config

sed -i"s/^SELINUX=permissive/SELINUX=disabled/g" /etc/sysconfig/selinux

sed -i"s/^SELINUX=permissive/SELINUX=disabled/g" /etc/selinux/config

#关闭Swap

swapoff -a

sed's/.*swap.*/#&/' /etc/fstab &>/dev/null

#内核#

cat <<EOF >/etc/sysctl.d/k8s.conf

net.ipv4.ip_forward =1

net.bridge.bridge-nf-call-ip6tables= 1

net.bridge.bridge-nf-call-iptables= 1

vm.swappiness=0

EOF

sysctl -p/etc/sysctl.d/k8s.conf &>/dev/null

echo "sysctl -p/etc/sysctl.d/k8s.conf" >>/etc/profile

echo "#myset

* soft nofile 65536

* hard nofile 65536

* soft nproc 65536

* hard nproc 65536

* soft  memlock unlimited

* hard memlock  unlimited

">>/etc/security/limits.conf

#hosts

• 第二步：下载相关组件

~]# vi download.sh

#安装kubelet kubeadm

curl -s http://elven.vip/ks/sh/kubelet.sh|bash

echo '下载K8S相关镜像'

MyUrl=registry.cn-shanghai.aliyuncs.com/alik8s

images=(kube-proxy-amd64:v1.10.0kube-controller-manager-amd64:v1.10.0 kube-scheduler-amd64:v1.10.0kube-apiserver-amd64:v1.10.0 etcd-amd64:3.1.12kubernetes-dashboard-amd64:v1.8.3 heapster-grafana-amd64:v4.4.3heapster-influxdb-amd64:v1.3.3 heapster-amd64:v1.4.2k8s-dns-dnsmasq-nanny-amd64:1.14.8 k8s-dns-sidecar-amd64:1.14.8k8s-dns-kube-dns-amd64:1.14.8 pause-amd64:3.1)

#

for imageName in${images[@]} ; do

  docker pull $MyUrl/$imageName

  docker tag $MyUrl/$imageNamek8s.gcr.io/$imageName

  docker rmi $MyUrl/$imageName

done

#

docker pull$MyUrl/flannel:v0.10.0-amd64

docker tag$MyUrl/flannel:v0.10.0-amd64 quay.io/coreos/flannel:v0.10.0-amd64

docker rmi$MyUrl/flannel:v0.10.0-amd64

echo '下载yml文件,部署flannel网络,dashboard用到'

mkdir -p$HOME/k8s/heapster ; cd $HOME/

YmlUrl=http://elven.vip/ks/k8s/oneinstall/yml

curl -s$YmlUrl/kube-flannel.yml >k8s/kube-flannel.yml

curl -s$YmlUrl/kubernetes-dashboard.yaml >k8s/kubernetes-dashboard.yaml

curl -s$YmlUrl/heapster-rbac.yaml >k8s/heapster-rbac.yaml

curl -s$YmlUrl/heapster/influxdb.yaml >k8s/heapster/influxdb.yaml

curl -s$YmlUrl/heapster/heapster.yaml >k8s/heapster/heapster.yaml

curl -s$YmlUrl/heapster/grafana.yaml >k8s/heapster/grafana.yaml

echo 

echo '镜像列表'

docker images |egrep'k8s.gcr.io|quay.io'

echo 

echo "yml部署文件"

ls -l $HOME/k8s/

echo 

• 第三步：安装部署k8s

~]# vi install.sh

#!/bin/bash

#k8s v1.10 master 单节点安装

#check

[[ $UID -ne 0 ]]&& { echo "Must run in root user !";exit; }

#重置#

kubeadm reset&>/dev/null

echo -e"33[32m初始化安装K8S Master33[0m"

kubeadm init--kubernetes-version=v1.10.0 --pod-network-cidr=10.244.0.0/16 |tee /tmp/install.log

echo 

echo -e"33[32mk8s node节点代码保存到$HOME/k8s.add.node.txt33[0m"

grep 'kubeadm join'/tmp/install.log >$HOME/k8s.add.node.txt

rm -f/tmp/install.log

sleep 2

#默认token有效期24小时，生成一个永不过期的

Token=`kubeadm tokencreate --ttl 0`

# echo $Token

# kubeadm token list

sed -i -r"s#(.*) --token (.*) --discovery(.*)#1 --token $Token --discovery3#"$HOME/k8s.add.node.txt

#kubectl认证

exportKUBECONFIG=/etc/kubernetes/admin.conf

echo "exportKUBECONFIG=/etc/kubernetes/admin.conf" >> ~/.bash_profile

##

echo "# used forkubectl ,k8s" >/etc/profile

echo "exportKUBECONFIG=/etc/kubernetes/admin.conf" >>/etc/profile

sleep 5

echo -e"33[32m查看K8S状态33[0m"

kubectl get cs

#让master也运行pod

kubectl taint nodes--all node-role.kubernetes.io/master-

cd $HOME/

echo -e"33[32m部署flannel网络 33[0m"

kubectl create -fk8s/kube-flannel.yml

sleep 5

echo 

echo -e"33[32m部署dashboard33[0m"

kubectl create -fk8s/kubernetes-dashboard.yaml

#dashboard监控图形化

sleep 5

kubectl create -fk8s/heapster/

kubectl create -fk8s/heapster-rbac.yaml

sleep 10

echo -e"33[32m查看pod33[0m"

kubectl get pods--all-namespaces

echo 

echo -e"33[32mdashboard登录令牌,保存到$HOME/k8s.token.dashboard.txt33[0m"

kubectl -nkube-system describe secret $(kubectl -n kube-system get secret | grepadmin-user | awk '{print $1}') |awk '/token:/{print$2}'>$HOME/k8s.token.dashboard.txt

echo 'dashboard登录令牌如下:'

echo 

cat$HOME/k8s.token.dashboard.txt

echo 

echo 'dashboard登录地址 https://本机IP:30000即: '

IP=`sed -r 's#^.*join(.*):6443.*$#1#' $HOME/k8s.add.node.txt`

echo "  https://$IP:30000"

echo 

echo '登录dashboard，输入令牌token'

echo '推荐火狐浏览器'

echo '若提示不安全的连接, 高级->添加例外'

echo 

echo 

echo -e"33[32m添加k8s node节点代码如下:33[0m"

echo 

cat$HOME/k8s.add.node.txt

echo 

echo  "重新登录查看Node    kubectl getnodes"

echo 

exit

# 若安装失败，重新执行

至此安装完成，访问dashboard登录地址https://本机IP:30000

• 附：

1、K8S节点加入命令：kubeadm token create --print-join-command （适用于1.9版本之后）

2、Kubeadm 初始化时提示：

unable toget URL "https://dl.k8s.io/release/stable-1.10.txt":Get https://storage.googleapis.com/kubernetes-release/release/stable-1.10.txt:dial tcp 216.58.200.48:443: i/o timeout

解决方案：

需要指定k8s版本：kubeadm init --kubernetes-version=1.10.0…………

3、执行kubectl  get  pods提示：The connection to theserver localhost:8080 was refused - did you specify the right host or port?

解决方案:

$ sudo cp /etc/kubernetes/admin.conf $HOME/

$sudochown $(id -u):$(id -g) $HOME/admin.conf

$export KUBECONFIG=$HOME/admin.conf

$ sudo cp /etc/kubernetes/kubelet.conf $HOME/

$sudochown $(id -u):$(id -g) $HOME/kubelet.conf

$export KUBECONFIG=$HOME/kubelet.conf

  -End-

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