Kubernetes(k8s)1.14 离线版集群 - 搭建环境配置

172.26.16.249  k8s-01
172.26.16.250  k8s-02
172.26.16.251  k8s-03
172.26.16.252  k8s-04
EOF

#!/usr/bin/bash

# 生成 EncryptionConfig 所需的加密 key
export ENCRYPTION_KEY=$(head -c 32 /dev/urandom | base64)
# 集群各机器 IP 数组
export NODE_IPS=( 172.26.16.249 172.26.16.250 172.26.16.251 172.26.16.252 )
# 集群各 IP 对应的主机名数组
export NODE_NAMES=(k8s-01 k8s-02 k8s-03 k8s-04)
# 集群MASTER机器 IP 数组
export MASTER_IPS=(172.26.16.249 172.26.16.250 172.26.16.251 )
# 集群所有的master Ip对应的主机
export MASTER_NAMES=(k8s-01 k8s-02 k8s-03)
# etcd 集群服务地址列表
export ETCD_ENDPOINTS="https://172.26.16.249:2379,https://172.26.16.250:2379,https://172.26.16.251:2379"
# etcd 集群间通信的 IP 和端口
export ETCD_NODES="k8s-01=https://172.26.16.249:2380,k8s-02=https://172.26.16.250:2380,k8s-03=https://172.26.16.251:2380"
# etcd 集群所有node ip
export ETCD_IPS=(172.26.16.249 172.26.16.250 172.26.16.251 172.26.16.252 )
# kube-apiserver 的反向代理(kube-nginx)地址端口
export KUBE_APISERVER="https://172.26.16.252:8443"
# 节点间互联网络接口名称
export IFACE="eth0"
# etcd 数据目录
export ETCD_DATA_DIR="/data/k8s/etcd/data"
# etcd WAL 目录，建议是 SSD 磁盘分区，或者和 ETCD_DATA_DIR 不同的磁盘分区
export ETCD_WAL_DIR="/data/k8s/etcd/wal"
# k8s 各组件数据目录
export K8S_DIR="/data/k8s/k8s"
# docker 数据目录
#export DOCKER_DIR="/data/k8s/docker"

## 以下参数不需要修改
# TLS Bootstrapping 使用的 Token，可以使用命令 head -c 16 /dev/urandom | od -An -t x | tr -d ' ' 生成
#BOOTSTRAP_TOKEN="41f7e4ba8b7be874fcff18bf5cf41a7c"
# 最好使用 当前未用的网段 来定义服务网段和 Pod 网段
# 服务网段，部署前路由不可达，部署后集群内路由可达(kube-proxy 保证)
SERVICE_CIDR="10.254.0.0/16"
# Pod 网段，建议 /16 段地址，部署前路由不可达，部署后集群内路由可达(flanneld 保证)
CLUSTER_CIDR="172.30.0.0/16"
# 服务端口范围 (NodePort Range)
export NODE_PORT_RANGE="1024-32767"
# flanneld 网络配置前缀
export FLANNEL_ETCD_PREFIX="/kubernetes/network"
# kubernetes 服务 IP (一般是 SERVICE_CIDR 中第一个IP)
export CLUSTER_KUBERNETES_SVC_IP="10.254.0.1"
# 集群 DNS 服务 IP (从 SERVICE_CIDR 中预分配)
export CLUSTER_DNS_SVC_IP="10.254.0.2"
# 集群 DNS 域名（末尾不带点号）
export CLUSTER_DNS_DOMAIN="cluster.local"
# 将二进制目录 /opt/k8s/bin 加到 PATH 中
export PATH=/opt/k8s/bin:$PATH

cd /opt/k8s/bin && source environment.sh

for node_ip in ${NODE_IPS[@]}
  do
    echo ">>> ${node_ip}"
    scp environment.sh root@${node_ip}:/opt/k8s/bin/
    ssh root@${node_ip} "chmod +x /opt/k8s/bin/* "
done

cd /opt/k8s/bin && source environment.sh

for node_ip in ${NODE_IPS[@]}
  do
    echo ">>> ${node_ip}"
    ntpdate -u ntp.api.bz
	systemctl restart rsyslog && systemctl restart crond
done

cd /opt/k8s/bin && source environment.sh

for node_ip in ${NODE_IPS[@]}
  do
    echo ">>> ${node_ip}"
    systemctl stop firewalld && systemctl disable firewalld
done

cd /opt/k8s/bin && source environment.sh

for node_ip in ${NODE_IPS[@]}
  do
    echo ">>> ${node_ip}"
    swapoff -a && sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
done

cd /opt/k8s/bin && source environment.sh

for node_ip in ${NODE_IPS[@]}
  do
    echo ">>> ${node_ip}"
    iptables -F && iptables -X && iptables -F -t nat && iptables -X -t nat
	iptables -P FORWARD ACCEPT
done

cd /opt/k8s/bin && source environment.sh

for node_ip in ${NODE_IPS[@]}
  do
    echo ">>> ${node_ip}"
	setenforce 0
	sed -i 's/^SELINUX=.*/SELINUX=disabled/' /etc/selinux/config
done

cat <<EOF > /etc/yum.repos.d/kubernetes.repo

[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.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg

EOF

net.ipv4.ip_nonlocal_bind = 1
net.ipv4.ip_forward = 1
net.ipv4.ip_local_port_range = 10000 65000
fs.file-max = 2000000
vm.swappiness =0

EOF