-
可以用来管理和守护应用程序，包括启动、停止、重启、开机启动应用进程等。
-
Install pm2
-
With yarn:
yarn global add pm2 -
With npm:
npm install pm2 -g
-
-
查看相关命令
# pm2 examples [PM2] pm2 usage examples: - Start and add a process to the pm2 process list: $ pm2 start app.js --name app - Show the process list: $ pm2 ls - Stop and delete a process from the pm2 process list: $ pm2 delete app - Stop, start and restart a process from the process list: $ pm2 stop app $ pm2 start app $ pm2 restart app - Clusterize an app to all CPU cores available: $ pm2 start -i max - Update pm2 : $ npm install pm2 -g && pm2 update - Install pm2 auto completion: $ pm2 completion install Check the full documentation on https://pm2.keymetrics.io/ -
使用示例 - 启动应用
# pm2 start "yarn start" --name nextchat-prod ------------- __/\\\\\\\\\\\\\____/\\\\____________/\\\\____/\\\\\\\\\_____ _\/\\\/////////\\\_\/\\\\\\________/\\\\\\__/\\\///////\\\___ _\/\\\_______\/\\\_\/\\\//\\\____/\\\//\\\_\///______\//\\\__ _\/\\\\\\\\\\\\\/__\/\\\\///\\\/\\\/_\/\\\___________/\\\/___ _\/\\\/////////____\/\\\__\///\\\/___\/\\\________/\\\//_____ _\/\\\_____________\/\\\____\///_____\/\\\_____/\\\//________ _\/\\\_____________\/\\\_____________\/\\\___/\\\/___________ _\/\\\_____________\/\\\_____________\/\\\__/\\\\\\\\\\\\\\\_ _\///______________\///______________\///__\///////////////__ Runtime Edition PM2 is a Production Process Manager for Node.js applications with a built-in Load Balancer. Start and Daemonize any application: $ pm2 start app.js Load Balance 4 instances of api.js: $ pm2 start api.js -i 4 Monitor in production: $ pm2 monitor Make pm2 auto-boot at server restart: $ pm2 startup To go further checkout: http://pm2.io/ ------------- [PM2] Spawning PM2 daemon with pm2_home=/root/.pm2 [PM2] PM2 Successfully daemonized [PM2] Starting /usr/bin/bash in fork_mode (1 instance) [PM2] Done. ┌────┬────────────────────┬──────────┬──────┬───────────┬──────────┬──────────┐ │ id │ name │ mode │ ↺ │ status │ cpu │ memory │ ├────┼────────────────────┼──────────┼──────┼───────────┼──────────┼──────────┤ │ 0 │ nextchat-prod │ fork │ 0 │ online │ 0% │ 29.8mb │ └────┴────────────────────┴──────────┴──────┴───────────┴──────────┴──────────┘-
查看应用日志
# pm2 logs nextchat-prod [TAILING] Tailing last 15 lines for [nextchat-prod] process (change the value with --lines option) /root/.pm2/logs/nextchat-prod-out.log last 15 lines: 0|nextchat | $ next start 0|nextchat | ▲ Next.js 14.1.1 0|nextchat | - Local: http://localhost:3000 0|nextchat | 0|nextchat | [Next] build mode standalone 0|nextchat | [Next] build with chunk: true 0|nextchat | info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command. 0|nextchat | yarn run v1.22.22 0|nextchat | $ next start 0|nextchat | ▲ Next.js 14.1.1 0|nextchat | - Local: http://localhost:3000 0|nextchat | 0|nextchat | [Next] build mode standalone 0|nextchat | [Next] build with chunk: true 0|nextchat | info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command. /root/.pm2/logs/nextchat-prod-error.log last 15 lines: 0|nextchat | path: '/home/wwwroot/DeepSeek/NextChat_main/.next/prerender-manifest.json' 0|nextchat | } 0|nextchat | error Command failed with exit code 1. 0|nextchat | Error: ENOENT: no such file or directory, open '/home/wwwroot/DeepSeek/NextChat_main/.next/prerender-manifest.json' 0|nextchat | at async open (node:internal/fs/promises:639:25) 0|nextchat | at async Object.readFile (node:internal/fs/promises:1246:14) 0|nextchat | at async setupFsCheck (/home/wwwroot/DeepSeek/NextChat_main/node_modules/next/dist/server/lib/router-utils/filesystem.js:181:40) 0|nextchat | at async initialize (/home/wwwroot/DeepSeek/NextChat_main/node_modules/next/dist/server/lib/router-server.js:58:23) 0|nextchat | at async Server.<anonymous> (/home/wwwroot/DeepSeek/NextChat_main/node_modules/next/dist/server/lib/start-server.js:247:36) { 0|nextchat | errno: -2, 0|nextchat | code: 'ENOENT', 0|nextchat | syscall: 'open', 0|nextchat | path: '/home/wwwroot/DeepSeek/NextChat_main/.next/prerender-manifest.json' 0|nextchat | } 0|nextchat | error Command failed with exit code 1. -
重启应用
# pm2 restart nextchat-prod Use --update-env to update environment variables [PM2] Applying action restartProcessId on app [nextchat-prod](ids: [ 0 ]) [PM2] [nextchat-prod](0) ✓ ┌────┬────────────────────┬──────────┬──────┬───────────┬──────────┬──────────┐ │ id │ name │ mode │ ↺ │ status │ cpu │ memory │ ├────┼────────────────────┼──────────┼──────┼───────────┼──────────┼──────────┤ │ 0 │ nextchat-prod │ fork │ 16 │ online │ 0% │ 19.5mb │ └────┴────────────────────┴──────────┴──────┴───────────┴──────────┴──────────┘ -
查看应用信息
# pm2 info nextchat-prod Describing process with id 0 - name nextchat-prod ┌───────────────────┬─────────────────────────────────────────┐ │ status │ online │ │ name │ nextchat-prod │ │ namespace │ default │ │ version │ N/A │ │ restarts │ 16 │ │ uptime │ 5s │ │ script path │ /usr/bin/bash │ │ script args │ -c yarn start │ │ error log path │ /root/.pm2/logs/nextchat-prod-error.log │ │ out log path │ /root/.pm2/logs/nextchat-prod-out.log │ │ pid path │ /root/.pm2/pids/nextchat-prod-0.pid │ │ interpreter │ none │ │ interpreter args │ N/A │ │ script id │ 0 │ │ exec cwd │ /home/wwwroot/DeepSeek/NextChat_main │ │ exec mode │ fork_mode │ │ node.js version │ N/A │ │ node env │ N/A │ │ watch & reload │ ✘ │ │ unstable restarts │ 0 │ │ created at │ 2025-03-13T02:37:42.134Z │ └───────────────────┴─────────────────────────────────────────┘ Divergent env variables from local env Add your own code metrics: http://bit.ly/code-metrics Use `pm2 logs nextchat-prod [--lines 1000]` to display logs Use `pm2 env 0` to display environment variables Use `pm2 monit` to monitor CPU and Memory usage nextchat-prod
-