CODEWITHSUNDEEP
node.jspm2
Fragilerus
Fragilerus

Reputation: 1909

Make pm2 log to console

I am running a node webserver using pm2. Since pm2 spawns another process and redirects stdout and stderr to files, I have to look somewhere else for the logs. Ideally, I would like to have the node process output to the same console window that I've run pm2 from. Otherwise, I would settle for pm2 run the node process with an active console window and have stdout and stderr of the node process write to that console window. How can this be achieved? I'm on a windows machine.

Upvotes: 68

Views: 158226

Answers (7)

Chukwuemeka Maduekwe
Chukwuemeka Maduekwe

Reputation: 8566

You can easily achieve that by running any of the following command:

  1. pm2 log logs everything to the terminal except console.log

  2. pm2 logs logs everything to the terminal including console.log

Notice the 's' in the second command. The difference is that one is plural and the other is singular.

Upvotes: 36

Devin Rhode
Devin Rhode

Reputation: 25367

I wanted to run pm2 in background of an nginx-based docker container. Added a shell script into /docker-entrypoint.d/ which just runs ./node_modules/.bin/pm2-runtime start ./ecosystem.config.cjs &. The & makes pm2 run in background, but all the stdout is unaffected - it all gets mixed in with normal nginx stdout.

Upvotes: 0

BitOfUniverse
BitOfUniverse

Reputation: 6021

I think --attach flag might be the best option here.

From docs:

To start an app and check logs stream use the --attach option: $ pm2 start api.js --attach When quitting via Ctrl-C, the app will still run in background.

Upvotes: 4

Extrange planet
Extrange planet

Reputation: 278

Direct to the app running that you want to monit logs

pm2 logs <app id or app name> --lines 50

Upvotes: 4

kharandziuk
kharandziuk

Reputation: 12900

programmatically you can do something like this:

const pm2 = require('pm2')

pm2.connect(function(err) {
  if (err) {
    console.error(err);
    process.exit(2);
  }
  pm2.start([
    {
      script             : "server.js",
      output: "/dev/stdout",
      error: "/dev/stderr",
    },
  ]
    , function(err, proc) {
      if(err) {
        throw err
      }
    });
})

Upvotes: 7

Timothy Vann
Timothy Vann

Reputation: 2677

I believe you can also see the stdout and stderr of a process that is running daemonized by the command pm2 logs or pm2 logs [app-name].

Upvotes: 134

Fragilerus
Fragilerus

Reputation: 1909

Found the answer (their documentation is not that great), just added the --no-daemon flag, seems to have done it. Although, it appears that it's still logging to the file (even when using the flag) on the first uptime. Once the process gets restarted (I'm watching for file changes) it starts logging out to the console

Upvotes: 15

Related Questions