PM2 `Starts` and then immediately `Errors`
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Description
PM2 is managing http-server on port 8080. PM2 is starting up with an online status and then erroring out soon after in my AWS Amplify build pipeline. Below is the PM2 report:
2025-04-18T19:08:39.650Z [INFO]: # Executing command: npx pm2 start http-server -- './dist' -p 8080
2025-04-18T19:08:42.928Z [WARNING]: npx: installed 134 in 3.229s
2025-04-18T19:08:43.089Z [INFO]: [PM2] Starting /codebuild/output/src4123211847/src/websites-datadogon/node_modules/.bin/http-server in fork_mode (1 instance)
2025-04-18T19:08:43.103Z [INFO]: [PM2] Done.
2025-04-18T19:08:43.118Z [INFO]: ┌────┬────────────────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id │ name │ namespace │ version │ mode │ pid │ uptime │ ↺ │ status │ cpu │ mem │ user │ watching │
├────┼────────────────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 0 │ http-server │ default │ 1.0.0 │ fork │ 1623 │ 0s │ 0 │ online │ 0% │ 27.8mb │ root │ disabled │
└────┴────────────────┴─────────────┴─────────┴─────────┴──────────┴────────┴──────┴───────────┴──────────┴──────────┴──────────┴──────────┘
2025-04-18T19:08:43.636Z [INFO]: # Executing command: echo "report status"
report status
# Executing command: npx pm2 report
2025-04-18T19:08:47.268Z [WARNING]: npx: installed 134 in 3.59s
2025-04-18T19:08:47.437Z [INFO]:
2025-04-18T19:08:47.437Z [INFO]: --- PM2 report ----------------------------------------------------------------
Date : Fri Apr 18 2025 19:08:47 GMT+0000 (Coordinated Universal Time)
===============================================================================
--- Daemon --------------------------------------------------------------------
pm2d version : 6.0.5
node version : 14.21.3
node path : /root/.nvm/versions/node/v14.21.3/bin/npx
argv : /root/.nvm/versions/node/v14.21.3/bin/node,/root/.npm/_npx/1544/lib/node_modules/pm2/lib/Daemon.js
2025-04-18T19:08:47.437Z [INFO]: argv0 : /root/.nvm/versions/node/v14.21.3/bin/node
user : undefined
uid : 0
gid : 0
2025-04-18T19:08:47.437Z [INFO]: uptime : 0min
2025-04-18T19:08:47.438Z [INFO]: ===============================================================================
--- CLI -----------------------------------------------------------------------
local pm2 : 6.0.5
node version : 14.21.3
node path : /root/.nvm/versions/node/v14.21.3/bin/npx
argv : /root/.nvm/versions/node/v14.21.3/bin/node,/root/.npm/_npx/1697/bin/pm2,report
2025-04-18T19:08:47.438Z [INFO]: argv0 : node
user : undefined
uid : 0
gid : 0
===============================================================================
--- System info ---------------------------------------------------------------
2025-04-18T19:08:47.438Z [INFO]: arch : x64
platform : linux
type : Linux
2025-04-18T19:08:47.455Z [INFO]: cpus : Intel(R) Xeon(R) Platinum 8124M CPU @ 3.00GHz
2025-04-18T19:08:47.455Z [INFO]: cpus nb : 4
freemem : 841699328
totalmem : 7981080576
home : /root
2025-04-18T19:08:47.457Z [INFO]: ===============================================================================
2025-04-18T19:08:47.457Z [INFO]: --- PM2 list ------------------------------------------------------------------
2025-04-18T19:08:47.459Z [INFO]: ┌────┬────────────────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id │ name │ namespace │ version │ mode │ pid │ uptime │ ↺ │ status │ cpu │ mem │ user │ watching │
├────┼────────────────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 0 │ http-server │ default │ 1.0.0 │ fork │ 0 │ 0 │ 15 │ errored │ 0% │ 0b │ root │ disabled │
└────┴────────────────┴─────────────┴─────────┴─────────┴──────────┴────────┴──────┴───────────┴──────────┴──────────┴──────────┴──────────┘
2025-04-18T19:08:47.459Z [INFO]: ===============================================================================
--- Daemon logs ---------------------------------------------------------------
2025-04-18T19:08:47.461Z [INFO]: /root/.pm2/pm2.log last 20 lines:
2025-04-18T19:08:47.461Z [INFO]: PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] exited with code [1] via signal [SIGINT]
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] starting in -fork mode-
2025-04-18T19:08:47.461Z [INFO]: PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] online
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] exited with code [1] via signal [SIGINT]
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] starting in -fork mode-
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] online
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] exited with code [1] via signal [SIGINT]
2025-04-18T19:08:47.461Z [INFO]: PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] starting in -fork mode-
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] online
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] exited with code [1] via signal [SIGINT]
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] starting in -fork mode-
2025-04-18T19:08:47.461Z [INFO]: PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] online
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] exited with code [1] via signal [SIGINT]
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] starting in -fork mode-
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] online
2025-04-18T19:08:47.461Z [INFO]: PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] exited with code [1] via signal [SIGINT]
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] starting in -fork mode-
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] online
PM2 | 2025-04-18T19:08:43: PM2 log: App [http-server:0] exited with code [1] via signal [SIGINT]
PM2 |
2025-04-18T19:08:47.462Z [INFO]: 2025-04-18T19:08:43: PM2 log: Script /codebuild/output/src4123211847/src/websites-datadogon/node_modules/.bin/http-server had too many unstable restarts (16). Stopped. "errored"
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing npx pm2 start http-server -- './dist' -p 8080 in the reported AWS Amplify environment and inspect the PM2 daemon logs and pm2 report output. The issue names no source file, test, expected behavior, or proposed change, so the work is complete only after the failure cause and an actionable fix or reproduction are established.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- aws, javascript, nodejs
- Domain
- cli, cloud, devops
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100