Can't run snap package

[KhazAkar]

Hi!
I found your interesting project in App Centre in Ubuntu, but I can't get it to work.

khazakar@unity-e7250:~$ parca
ooooooooo.
`888   `Y88.
 888   .d88'  .oooo.   oooo d8b  .ooooo.   .oooo.
 888ooo88P'  `P  )88b  `888""8P d88' `"Y8 `P  )88b
 888          .oP"888   888     888        .oP"888
 888         d8(  888   888     888   .o8 d8(  888
o888o        `Y888""8o d888b    `Y8bod8P' `Y888""8o



level=warn name=parca ts=2024-06-02T18:08:15.538369941Z caller=main.go:59 msg="failed to set GOMAXPROCS automatically" err="open /proc/self/mountinfo: permission denied"
level=error name=parca ts=2024-06-02T18:08:15.53840174Z caller=parca.go:206 msg="failed to read config" path=parca.yaml
level=error name=parca ts=2024-06-02T18:08:15.538421435Z caller=main.go:66 msg="Program exited with error" err="open parca.yaml: no such file or directory"

[jnsgruk]

Hi there! Sorry for the delay. That's because you're not providing a config file for Parca to run.

There are a couple of options outlined in the docs - you can either grab a config file from this repo and point the binary to it, or you can sudo snap start parca to start it with the default config.

[KhazAkar]

Starting service and running binary didn't helped unfortunately, those 3 lines are persistent. When running sudo parca

level=warn name=parca ts=2024-06-21T11:17:05.36490789Z caller=main.go:59 msg="failed to set GOMAXPROCS automatically" err="open /proc/self/mountinfo: permission denied"
level=error name=parca ts=2024-06-21T11:17:05.364984521Z caller=parca.go:206 msg="failed to read config" path=parca.yaml
level=error name=parca ts=2024-06-21T11:17:05.365004706Z caller=main.go:66 msg="Program exited with error" err="open parca.yaml: permission denied"

when running without sudo:

level=warn name=parca ts=2024-06-21T11:17:32.499109185Z caller=main.go:59 msg="failed to set GOMAXPROCS automatically" err="open /proc/self/mountinfo: permission denied"
level=error name=parca ts=2024-06-21T11:17:32.49914405Z caller=parca.go:206 msg="failed to read config" path=parca.yaml
level=error name=parca ts=2024-06-21T11:17:32.49915577Z caller=main.go:66 msg="Program exited with error" err="open parca.yaml: no such file or directory"

Here is log from snap logs parca

2024-06-21T13:16:47+02:00 parca.parca-svc[176237]: level=warn name=parca ts=2024-06-21T11:16:47.385919404Z caller=main.go:59 msg="failed to set GOMAXPROCS automatically" err="open /proc/self/mountinfo: permission denied"
2024-06-21T13:16:47+02:00 parca.parca-svc[176237]: level=info name=parca ts=2024-06-21T11:16:47.387101751Z caller=factory.go:53 msg="loading bucket configuration"
2024-06-21T13:16:47+02:00 parca.parca-svc[176237]: level=info name=parca ts=2024-06-21T11:16:47.3894585Z caller=badger.go:54 msg="Set nextTxnTs to 0"
2024-06-21T13:16:47+02:00 parca.parca-svc[176237]: level=info name=parca ts=2024-06-21T11:16:47.392902224Z caller=server.go:90 msg="starting server" addr=:7070

[KhazAkar]

Additionally, when trying to run with parca.yaml file from repo, this is what I get (with service started)

level=warn name=parca ts=2024-06-21T11:22:56.41977818Z caller=main.go:59 msg="failed to set GOMAXPROCS automatically" err="open /proc/self/mountinfo: permission denied"
level=info name=parca ts=2024-06-21T11:22:56.420065699Z caller=factory.go:53 msg="loading bucket configuration"
level=info name=parca ts=2024-06-21T11:22:56.423565192Z caller=badger.go:54 msg="Set nextTxnTs to 0"
level=info name=parca ts=2024-06-21T11:22:56.428538352Z caller=server.go:90 msg="starting server" addr=:7070
level=info db=parca name=parca ts=2024-06-21T11:22:56.43616135Z caller=db.go:1002 msg="closing DB"
level=info db=parca name=parca ts=2024-06-21T11:22:56.436209991Z caller=db.go:1015 msg="closed all tables"
level=error name=parca ts=2024-06-21T11:22:56.441863836Z caller=main.go:66 msg="Program exited with error" err="listen tcp :7070: bind: address already in use"

After stopping works fine when providing path to config.

[jnsgruk]

Okay, so it looks like with that last one we're getting pretty close. It seems like something is already running on :7070, which you can check with sudo ss -tlpn | grep 7070 - that should give you an idea of what's already got the port. If it's just another instance of parca, I'd recommend killing it and then trying sudo snap restart parca, then sudo snap logs parca to see the result :)

[jnsgruk]

Ah! Actually -- you need to stop the service before you launch manually...

sudo snap stop parca
sudo parca -c /path/to/config.yaml

[KhazAkar]

So only thing left to figure our is to run parca without providing parca.yaml file manually it seems :)

[jnsgruk]

I don't think that's possible. What you're talking about is the equivalent of "Running Parca from Binary" in the upstream docs: https://www.parca.dev/docs/binary, where the path to the config is always passed in as a command line arg.

[KhazAkar]

Yup, but there's no mention of providing config file on parca snap package page, which I use :)
https://www.parca.dev/docs/parca-snap