Logging Configuration

[ron...@gmail.com]

I have several questions regarding logs - specifically using a file:

1. Is there an easy way to prevent it from filling the disk e.g. rolling file?

2. Could I set a log level via configuration file and not only by CLI?

3. Is there another way to use a link mount file besides the Linux pipeline i.e. /bin/prometheus > /log/log file 2>&1

I have read the documentation and found only this:

$ prometheus -h
...
 == LOG ==
  
   -log.format "\"logger:stderr\""
      Set the log target and format. Example: 
      "logger:syslog?appname=bob&local=7" or "logger:stdout?json=true"

Are those the only two options - stderr and syslog?

Thanks in advance.

[Matthias Rampke]

1. logrotate, or see 3.
2. no
3. you could use svlogd (from the runit package), it also handles rotation for you. Or, on systemd based systems, just let journald handle everything for you.

/MR

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