centos node 进程保护_CentOS7使用pm2守护进程自启动

找到项目的目录，使用pm2进行启动

执行命令pm2 start 进行启动

[root@centos7 server]# pm2 start app.js

[PM2] Starting /www/server/yapi/vendors/server/app.js in fork_mode (1 instance)

[PM2] Done.

┌──────────┬────┬─────────┬──────┬───────┬────────┬─────────┬────────┬─────┬──────────┬──────┬──────────┐

│ App name │ id │ version │ mode │ pid │ status │ restart │ uptime │ cpu │ mem │ user │ watching │

├──────────┼────┼─────────┼──────┼───────┼────────┼─────────┼────────┼─────┼──────────┼──────┼──────────┤

│ app │ 0 │ 1.7.1 │ fork │ 21501 │ online │ 0 │ 0s │ 0% │ 2.9 MB │ root │ disabled │

└──────────┴────┴─────────┴──────┴───────┴────────┴─────────┴────────┴─────┴──────────┴──────┴──────────┘

Use `pm2 show ` to get more details about an app

保存当前列表

执行命令pm2 save保存现有列表数据，开机后会自动加载已保存的应用列表进行启动

[root@centos7 server]# pm2 save

[PM2] Saving current process list...

[PM2] Successfully saved in /root/.pm2/dump.pm2

[root@centos7 server]#

设置开机启动

执行命令pm2 startup进行设置开机启动

输出以下信息就表明已经设置成功

[root@centos7 server]# pm2 startup

[PM2] Init System found: systemd

Platform systemd

Template

[Unit]

Description=PM2 process manager

Documentation=https://pm2.keymetrics.io/

After=network.target

[Service]

Type=forking

User=root

LimitNOFILE=infinity

LimitNPROC=infinity

LimitCORE=infinity

Environment=PATH=/usr/local/src/node-v10.15.3-linux-x64/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin

Environment=PM2_HOME=/root/.pm2

PIDFile=/root/.pm2/pm2.pid

Restart=on-failure

ExecStart=/usr/local/src/node-v10.15.3-linux-x64/lib/node_modules/pm2/bin/pm2 resurrect

ExecReload=/usr/local/src/node-v10.15.3-linux-x64/lib/node_modules/pm2/bin/pm2 reload all

ExecStop=/usr/local/src/node-v10.15.3-linux-x64/lib/node_modules/pm2/bin/pm2 kill

[Install]

WantedBy=multi-user.target

Target path

/etc/systemd/system/pm2-root.service

Command list

[ 'systemctl enable pm2-root' ]

[PM2] Writing init configuration in /etc/systemd/system/pm2-root.service

[PM2] Making script booting at startup...

[PM2] [-] Executing: systemctl enable pm2-root...

[PM2] [v] Command successfully executed.

+---------------------------------------+

[PM2] Freeze a process list on reboot via:

$ pm2 save

[PM2] Remove init script via:

$ pm2 unstartup systemd

[root@centos7 server]#

centos7 可以通过systemctl查看服务状态

[root@centos7 server]# systemctl status pm2-root

● pm2-root.service - PM2 process manager

Loaded: loaded (/etc/systemd/system/pm2-root.service; enabled; vendor preset: disabled)

Active: inactive (dead)

Docs: https://pm2.keymetrics.io/

[root@centos7 server]#

其他相关命令：

# app指pm2创建的项目名

pm2 show app # 显示应用程序的所有信息

pm2 -h # 查看pm2帮助信息，显示命令用法

pm2 start app.js -n project # 将应用设置别名为project

pm2 list # 显示所有项目

pm2 stop app # 停止应用服务

pm2 restart app # 重启应用服务

pm2 delete app # 在进程中删除应用

pm2 status # 查看状态

pm2 monit # 查看占用的CPU和内存