高可用etcd集群（三节点） + ssl双向认证

# etcd下载地址
https://github.com/etcd-io/etcd/tags
wget https://github.com/etcd-io/etcd/releases/download/v3.1.20/etcd-v3.1.20-linux-amd64.tar.gz

# 创建etcd启动用户
useradd -s /sbin/nologin -M etcd

# 设置etcd工作空间　
tar -xf etcd-v3.1.20-linux-amd64.tar.gz -C /opt/
mv etcd-v3.1.20-linux-amd64 etcd-v3.1.20
ln -s etcd-v3.1.20 etcd

# 创建etcd工作目录
mkdir -p /opt/etcd/certs /data/etcd /data/logs/etcd-server

# 创建etcd启动脚本
/opt/etcd/etcd-server-startup.sh

#!/bin/sh
./etcd --name etcd-server-7-12 \
       --data-dir /data/etcd/etcd-server \
       --listen-peer-urls https://10.4.7.12:2380 \
       --listen-client-urls https://10.4.7.12:2379,http://127.0.0.1:2379 \
       --quota-backend-bytes 8000000000 \
       --initial-advertise-peer-urls https://10.4.7.12:2380 \
       --advertise-client-urls https://10.4.7.12:2379,http://127.0.0.1:2379 \
       --initial-cluster  etcd-server-7-12=https://10.4.7.12:2380,etcd-server-7-21=https://10.4.7.21:2380,etcd-server-7-22=https://10.4.7.22:2380 \
       --ca-file ./certs/ca.pem \
       --cert-file ./certs/etcd-peer.pem \
       --key-file ./certs/etcd-peer-key.pem \
       --client-cert-auth  \
       --trusted-ca-file ./certs/ca.pem \
       --peer-ca-file ./certs/ca.pem \
       --peer-cert-file ./certs/etcd-peer.pem \
       --peer-key-file ./certs/etcd-peer-key.pem \
       --peer-client-cert-auth \
       --peer-trusted-ca-file ./certs/ca.pem \
       --log-output stdout