Pm2: Cannot read property pm2_env of undefined

[tnguyen14]

Hi,

I'm trying to use pm2 inside a docker container (it works fine on the host machine), and I am getting this error:

:; docker logs test                                                                                                                                                                                                                                            
/src/node_modules/pm2/lib/API.js:995
        Common.printOut(conf.PREFIX_MSG + 'App [%s] launched (%d instances)', data[0].pm2_env.name, data.length);
                                                                                     ^
TypeError: Cannot read property 'pm2_env' of undefined
    at /src/node_modules/pm2/lib/API.js:995:86
    at /src/node_modules/pm2-axon-rpc/lib/client.js:45:10
    at Parser.<anonymous> (/src/node_modules/pm2-axon/lib/sockets/req.js:67:8)

I tried to look this up, and it seems that data is msg.args from the socket? I'm not sure what this is, or how to debug it further.

Is there anything I could do to figure out this issue further?

[vmarchaud]

PM2/NodeJS version ?

[Unitech]

Which Docker image are you using also?

[tnguyen14]

Node version 6.10.1
pm2 version 2.1.4
It is a custom image that is built off of RHEL 7.3

[tnguyen14]

I just updated to pm2 version 2.4.6, and I am getting the same error.

:; docker logs test
/src/node_modules/pm2/lib/API.js:1031
        Common.printOut(conf.PREFIX_MSG + 'App [%s] launched (%d instances)', data[0].pm2_env.name, data.length);
                                                                                     ^
TypeError: Cannot read property 'pm2_env' of undefined
    at /src/node_modules/pm2/lib/API.js:1031:86
    at /src/node_modules/pm2-axon-rpc/lib/client.js:45:10
    at Parser.<anonymous> (/src/node_modules/pm2-axon/lib/sockets/req.js:67:8)

[tnguyen14]

I think this might have to do with having a out_file and error_file property declared, though I haven't been able to completely isolate and reproduce that yet.

[Jasonbit]

Same error - totally killed a deploy for me today.

Node 7.10.0
pm2 2.4.6

Going to try to revert back to diff version(s)..

[vmarchaud]

Published under PM2 2.5

[andyfleming]

@tnguyen14 I think it may have to do with if the log file specified is accessible/writeable. That's what appeared to have solve the issue for me.

[Unitech]

confirmed, it has been fixed. you can try the fix:

$ npm install Unitech/pm2#development -g
$ pm2 update

[zachariahtimothy]

@andyfleming can you confirm what you did to fix this? I am using the latest docker container and it is still an issue.

[ivoribeiro]

Same here

[andyfleming]

To be honest, I can't remember what project I was working on where I ran into this, but I believe what solved the issue for me was reconfiguring the log settings (because the process didn't have permission to write logs where it was trying to).

If you use a processes.json config file to start your processes, try making sure you are sending errors/logs to stdout + stderr.

{
  "apps" : [{
     //...
     "error_file": "/dev/stderr",
     "out_file": "/dev/stdout",
    //...
  }]
}

[vmarchaud]

Could you share the exact error you have ? @ivoribeiro @zachariahtimothy
Last version may have the same error but not the same lines (check here), it would be easier to pinpoint the problem with it

[zachariahtimothy]

@andyfleming thanks I tried that with the same error.
@vmarchaud I am receiving the following:

/usr/local/lib/node_modules/pm2/lib/binaries/Runtime4Docker.js:94
var pm_id = obj[0].pm2_env.pm_id;
^

TypeError: Cannot read property 'pm2_env' of undefined
at /usr/local/lib/node_modules/pm2/lib/binaries/Runtime4Docker.js:94:26
at /usr/local/lib/node_modules/pm2/lib/API.js:1009:21
at /usr/local/lib/node_modules/pm2/lib/API.js:1080:19
at /usr/local/lib/node_modules/pm2/node_modules/async/dist/async.js:421:16
at replenish (/usr/local/lib/node_modules/pm2/node_modules/async/dist/async.js:941:25)
at iterateeCallback (/usr/local/lib/node_modules/pm2/node_modules/async/dist/async.js:931:17)
at /usr/local/lib/node_modules/pm2/node_modules/async/dist/async.js:906:16
at /usr/local/lib/node_modules/pm2/lib/API.js:1046:16
at /usr/local/lib/node_modules/pm2/node_modules/async/dist/async.js:3083:16
at replenish (/usr/local/lib/node_modules/pm2/node_modules/async/dist/async.js:946:17)

[nkostic]

Hi @zachariahtimothy I had very similar error. Please make sure that you app.js file is in the expected location.

[pukapukan]

I came across the same error - turns out I had a typo in the args for pm2-docker.