# 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
# 将提前生成好的etcd双向证书放置/opt/etcd/certs目录
# 证书生成，请参考：https://www.cnblogs.com/ipyanthony/p/12011893.html
[root@hdss7-12 opt]# ls /opt/etcd/certs/
ca.pem etcd-peer-key.pem etcd-peer.pem
# 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
不同etcd节点创建启动文件时，需要注意的事项：
--listen-peer-urls 此处填写etcd进程所在机器的ip
例如：--listen-peer-urls https://10.4.7.12:2380
--listen-client-urls 此处填写etcd进程所在机器的ip
例如：--listen-client-urls https://10.4.7.12:2379,http://127.0.0.1:2379
--initial-advertise-peer-urls 此处填写etcd进程所在机器的ip
例如：--initial-advertise-peer-urls https://10.4.7.12:2380
--advertise-client-urls 此处填写etcd进程所在机器的ip
例如：--advertise-client-urls https://10.4.7.12:2379,http://127.0.0.1:2379
# 授权工作目录
chown -R etcd.etcd /data/etcd
chown -R etcd.etcd /data/logs/etcd-server
chown -R etcd.etcd /opt/etcd/
# 安装supervisor进程管理软件
yum -y install supervisor
systemctl start supervisord
systemctl enable supervisord
# 添加etcd-supervisor启动文件
/etc/supervisord.d/etcd-server.ini
[program:etcd-server-7-12]
command=/opt/etcd/etcd-server-startup.sh ; the program (relative uses PATH, can take args)
numprocs=1 ; number of processes copies to start (def 1)
directory=/opt/etcd ; directory to cwd to before exec (def no cwd)
autostart=true ; start at supervisord start (default: true)
autorestart=true ; retstart at unexpected quit (default: true)
startsecs=30 ; number of secs prog must stay running (def. 1)
startretries=3 ; max # of serial start failures (default 3)
exitcodes=0,2 ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT ; signal used to kill process (default TERM)
stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10)
user=etcd ; setuid to this UNIX account to run the program
redirect_stderr=true ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/etcd-server/etcd.stdout.log ; stdout log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4 ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false ; emit events on stdout writes (default false)
# 启动supervisor管理etcd进程
supervisorctl update
supervisorctl status
# 查看进程
netstat -luntp|grep etcd
# 注意事项
2380端口为：etcd监听端口
2379端口为：多个etcd程序之间，互相通信的端口
tcp 0 0 10.4.7.12:2379 0.0.0.0:* LISTEN 22657/./etcd
tcp 0 0 127.0.0.1:2379 0.0.0.0:* LISTEN 22657/./etcd
tcp 0 0 10.4.7.12:2380 0.0.0.0:* LISTEN 22657/./etcd
