15 restarts, no logs

[dandv]

My script is in an errored status and none of the log files shown by pm2 desc contain anything (they don't exist). How can I debug what caused the 15 restarts in a row?

02:16:28 [0s] stockbase:~/stockbase$ pm2 desc 4
Describing process with pid 4 - name stockbase-frontend-prod
┌───────────────────┬────────────────────────────────────────────────────────────────────┐
│ status            │ errored                                                            │
│ name              │ stockbase-frontend-prod                                            │
│ id                │ 4                                                                  │
│ path              │ /home/stockbase/stockbase-prod/frontend/stockbase-frontend-prod.js │
│ exec cwd          │ /home/stockbase/stockbase-prod                                     │
│ error log path    │ /home/stockbase/stockbase-prod/stockbase-frontend-prod.err         │
│ out log path      │ /home/stockbase/stockbase-prod/stockbase-frontend-prod-4.log       │
│ pid path          │ /home/stockbase/.pm2/pids/stockbase-frontend-prod.pid              │
│ mode              │ cluster_mode                                                       │
│ watch & reload    │ ✘                                                                  │
│ interpreter       │ node                                                               │
│ restarts          │ 15                                                                 │
│ unstable restarts │ 0                                                                  │
│ uptime            │ 0                                                                  │
│ created at        │ 1970-01-01T00:00:00.000Z                                           │
└───────────────────┴────────────────────────────────────────────────────────────────────┘
02:16:45 [0s] stockbase:~/stockbase$ cat /home/stockbase/stockbase-prod/stockbase-frontend-prod-4.log
cat: /home/stockbase/stockbase-prod/stockbase-frontend-prod-4.log: No such file or directory
02:17:03 [0s] stockbase:~/stockbase$ cat /home/stockbase/stockbase-prod/stockbase-frontend-prod.err
cat: /home/stockbase/stockbase-prod/stockbase-frontend-prod.err: No such file or directory

Also, ~/pm2/logs is empty.

[soyuka]

• Are you sure that pm2 can write in /home/stockbase/stockbase-prod/ and in /home/stockbase/.pm2/pids/?
• Are you catching unhandled exceptions in your application?

Make sure that the cwd has the wanted impact on your application.
You could try pm2 start myapp.js --no-daemon to see if it gets started as intended.

[dandv]

It seems to be a permissions issue, though I'm trying to figure out exactly which one. The exact same deployment script works if I'm logged in as dandv, and launch it from /home/dandv/stockbase, but fails as above if I'm logged in as stockbase and launch it from /home/dandv/stockbase.

• Yes, the user stockbase can create files in both those directories, though there are no .pid files when I run the deployment script as stockbase (there's one when I run it as dandv, even after I stop the process).
• Probably, but you never know.

pm2 start frontend/stockbase-frontend-prod.js --no-daemon shows

>> pm2 is already daemonized ! You should kill it before launching it in no-daemon mode
fs.js:432
  return binding.open(pathModule._makeLong(path), stringToFlags(flags), mode);
                 ^
Error: ENOENT, no such file or directory '/home/stockbase/.pm2/pm2.pid'

The permissions of /home/stockbase/.pm2/ are 775.

I ran touch pm2.pid in that directory, then pm2 start frontend/stockbase-frontend-prod.js --no-daemon -f again. Got, among other things, PM2 dameon PID = 0 with /home/stockbase/.pm2/pm2.log file not found, and again, 15 restarts.

After touch /home/stockbase/.pm2/pm2.log and running pm2 start a 3rd time, I got process launched... PM2 dameon PID = [blank, no PID], and pm2 was hanging (no output). pm2 l in another shell showed again 15 restarts. Hit ^C.

/home/stockbase/.pm2/pm2.log and /home/stockbase/.pm2/pm2.pid are 0-byte.

Looks like pm2 doesn't quite support more than one user running commands? I've been running pm2 as dandv for months, created boot scripts, then yesterday we wanted to switch to a dedicated user (stockbase) to manage pm2.

[soyuka]

What user has started pm2 the first time?
For example

ps -ef | grep pm2

Could you try specifying logs (out and err) and pid paths through a json file?

[dandv]

That must be it - pm2 was first started by dandv and now trying to control it via stockbase results in the errors above. Is it a bug perhaps? Otherwise I could try using a JSON file for the logs and paths, but it seems like command line parameters should work as well. A similar issue is why I stopped using forever.

[soyuka]

Maybe linked to #329 (comment) (multi-user suggestions) ?

The link leads to a 404 error.

[dandv]

Fixed the link, it was missing http://.

[soyuka]

Ok thanks, could you try changing the user that is running pm2 to see if it works?

You could also try using --run-as-user stockbase on a process but it should be executed from the dandv account (i.e the user that runs pm2):

dandv@x:~/ pm2 start stockbase --run-as-user stockbase

It should resolve such things but this feature is not really working according to #329.