【发布时间】：2021-04-22 20:45:48
【问题描述】：
我有一个 NodeJs+Express+Mongodb 应用程序，我正在尝试在我的 vps 上运行它。 我愿意：
pm2 start server
[PM2] Applying action restartProcessId on app [server](ids: [ 1 ])
[PM2] [server](1) ✓
[PM2] Process successfully started
┌────┬────────────────────┬──────────┬──────┬───────────┬──────────┬──────────┐
│ id │ name │ mode │ ↺ │ status │ cpu │ memory │
├────┼────────────────────┼──────────┼──────┼───────────┼──────────┼──────────┤
│ 1 │ server │ fork │ 991 │ online │ 0% │ 13.8mb │
└────┴────────────────────┴──────────┴──────┴───────────┴──────────┴──────────┘
Current process list running is not in sync with saved list. App app differs. Type 'pm2 save' to synchronize.
一切正常。但几分钟后 pm2 出现错误并每 1 秒循环重启一次：
2021-04-21T09:39:19: PM2 log: ===============================================================================
2021-04-21T09:39:19: PM2 log: --- New PM2 Daemon started ----------------------------------------------------
2021-04-21T09:39:19: PM2 log: Time : Wed Apr 21 2021 09:39:19 GMT+0000 (Coordinated Universal Time)
2021-04-21T09:39:19: PM2 log: PM2 version : 4.5.5
2021-04-21T09:39:19: PM2 log: Node.js version : 15.12.0
2021-04-21T09:39:19: PM2 log: Current arch : x64
2021-04-21T09:39:19: PM2 log: PM2 home : /home/debian/.pm2
2021-04-21T09:39:19: PM2 log: PM2 PID file : /home/debian/.pm2/pm2.pid
2021-04-21T09:39:19: PM2 log: RPC socket file : /home/debian/.pm2/rpc.sock
2021-04-21T09:39:19: PM2 log: BUS socket file : /home/debian/.pm2/pub.sock
2021-04-21T09:39:19: PM2 log: Application log path : /home/debian/.pm2/logs
2021-04-21T09:39:19: PM2 log: Worker Interval : 30000
2021-04-21T09:39:19: PM2 log: Process dump file : /home/debian/.pm2/dump.pm2
2021-04-21T09:39:19: PM2 log: Concurrent actions : 2
2021-04-21T09:39:19: PM2 log: SIGTERM timeout : 1600
2021-04-21T09:39:19: PM2 log: ===============================================================================
2021-04-21T09:39:32: PM2 error: 2 : id unknown
2021-04-21T09:39:32: PM2 error: Trace: Error: 2 : id unknown
at Object.God.logAndGenerateError (/home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/lib/God/Methods.js:39:12)
at Object.God.stopProcessId (/home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/lib/God/ActionMethods.js:306:21)
at God.deleteProcessId (/home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/lib/God/ActionMethods.js:383:9)
at Server.onmessage (/home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/node_modules/pm2-axon-rpc/lib/server.js:104:6)
at RepSocket.emit (node:events:369:20)
at RepSocket.emit (node:domain:470:12)
at Parser.<anonymous> (/home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/node_modules/pm2-axon/lib/sockets/rep.js:51:15)
at Parser.emit (node:events:369:20)
at Parser.emit (node:domain:532:15)
at Parser._write (/home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/node_modules/amp/lib/stream.js:91:16)
at Object.God.logAndGenerateError (/home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/lib/God/Methods.js:34:15)
at /home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/lib/God/ActionMethods.js:384:30
at Object.God.stopProcessId (/home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/lib/God/ActionMethods.js:306:14)
at God.deleteProcessId (/home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/lib/God/ActionMethods.js:383:9)
at Server.onmessage (/home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/node_modules/pm2-axon-rpc/lib/server.js:104:6)
at RepSocket.emit (node:events:369:20)
at RepSocket.emit (node:domain:470:12)
at Parser.<anonymous> (/home/debian/.nvm/versions/node/v15.12.0/lib/node_modules/pm2/node_modules/pm2-axon/lib/sockets/rep.js:51:15)
at Parser.emit (node:events:369:20)
at Parser.emit (node:domain:532:15)
2021-04-21T09:39:49: PM2 log: PM2 successfully stopped
2021-04-21T09:39:57: PM2 log: ===============================================================================
2021-04-21T09:39:57: PM2 log: --- New PM2 Daemon started ----------------------------------------------------
2021-04-21T09:39:57: PM2 log: Time : Wed Apr 21 2021 09:39:57 GMT+0000 (Coordinated Universal Time)
2021-04-21T09:39:57: PM2 log: PM2 version : 4.5.5
2021-04-21T09:39:57: PM2 log: Node.js version : 15.12.0
2021-04-21T09:39:57: PM2 log: Current arch : x64
2021-04-21T09:39:57: PM2 log: PM2 home : /home/debian/.pm2
2021-04-21T09:39:57: PM2 log: PM2 PID file : /home/debian/.pm2/pm2.pid
2021-04-21T09:39:57: PM2 log: RPC socket file : /home/debian/.pm2/rpc.sock
2021-04-21T09:39:57: PM2 log: BUS socket file : /home/debian/.pm2/pub.sock
2021-04-21T09:39:57: PM2 log: Application log path : /home/debian/.pm2/logs
2021-04-21T09:39:57: PM2 log: Worker Interval : 30000
2021-04-21T09:39:57: PM2 log: Process dump file : /home/debian/.pm2/dump.pm2
2021-04-21T09:39:57: PM2 log: Concurrent actions : 2
2021-04-21T09:39:57: PM2 log: SIGTERM timeout : 1600
2021-04-21T09:39:57: PM2 log: ===============================================================================
2021-04-21T10:07:24: PM2 log: App [app:0] starting in -fork mode-
2021-04-21T10:07:24: PM2 log: App [app:0] online
2021-04-21T10:07:25: PM2 log: App [app:0] exited with code [1] via signal [SIGINT]
2021-04-21T10:07:25: PM2 log: App [app:0] starting in -fork mode-
2021-04-21T10:07:25: PM2 log: App [app:0] online
2021-04-21T10:07:26: PM2 log: App [app:0] exited with code [1] via signal [SIGINT]
2021-04-21T10:07:26: PM2 log: App [app:0] starting in -fork mode-
2021-04-21T10:07:26: PM2 log: App [app:0] online
2021-04-21T10:07:26: PM2 log: App [app:0] exited with code [1] via signal [SIGINT]
2021-04-21T10:07:26: PM2 log: App [app:0] starting in -fork mode-
2021-04-21T10:07:26: PM2 log: App [app:0] online
// infinite loop here
2021-04-21T10:07:27: PM2 log: App [app:0] exited with code [1] via signal [SIGINT]
2021-04-21T10:07:27: PM2 log: App [app:0] starting in -fork mode-
2021-04-21T10:07:27: PM2 log: App [app:0] online
有人可以帮助我了解问题所在吗？在 localhost 中一切正常，但在生产环境中运行对我来说非常困难。
【问题讨论】：