etcd开机自动启动
1、服务文件
/usr/lib/systemd/system/etcd.service
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
Type=notify
WorkingDirectory=/var/lib/etcd/
EnvironmentFile=-/etc/etcd/etcd.conf
User=etcd
# set GOMAXPROCS to number of processors
ExecStart=/bin/bash -c "GOMAXPROCS=$(nproc) /usr/bin/etcd --name=\"${ETCD_NAME}\" --data-dir=\"${ETCD_DATA_DIR}\" --listen-client-urls=\"${ETCD_LISTEN_CLIENT_URLS}\""
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
2、允许开机启动
systemctl enable etcd.service
3、启动
systemctl start etcd.service
4 、关闭
systemctl stop etcd.service
5、重启
systemctl restart etcd.service
6、查看运行状态
systemctl status etcd.service
7、etcdctl 主要命令
COMMANDS:
backup backup an etcd directory 备份目录
cluster-health check the health of the etcd cluster 检查集群状态
mk make a new key with a given value
mkdir make a new directory 新建目录
rm remove a key or a directory 删除key或目录
rmdir removes the key if it is an empty directory or a key-value pair
get retrieve the value of a key 获取制定key的值
ls retrieve a directory 目录列表
set set the value of a key 设值
setdir create a new directory or update an existing directory TTL
update update an existing key with a given value 更新指定key的值
updatedir update an existing directory
watch watch a key for changes
exec-watch watch a key for changes and exec an executable
member member add, remove and list subcommands
user user add, grant and revoke subcommands
role role add, grant and revoke subcommands
auth overall auth controls
help, h Shows a list of commands or help for one command
参考:
对比表,以 apache / httpd 为例
任务 旧指令 新指令
使某服务自动启动 chkconfig –level 3 httpd on systemctl enable httpd.service
使某服务不自动启动 chkconfig –level 3 httpd off systemctl disable httpd.service
检查服务状态 service httpd status systemctl status httpd.service (服务详细信息) systemctl is-active httpd.service (仅显示是否 Active)
显示所有已启动的服务 chkconfig –list systemctl list-units –type=service
启动某服务 service httpd start systemctl start httpd.service
停止某服务 service httpd stop systemctl stop httpd.service
重启某服务 service httpd restart systemctl restart httpd.service
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