Imap client with ~7500 imap cmds ~250/~500 read() syscall

Aki Tuomi aki.tuomi at open-xchange.com
Wed Dec 30 11:54:30 EET 2020


> On 30/12/2020 11:46 Marc Roos <m.roos at f1-outsourcing.eu> wrote:
> 
>  
> I am playing a bit with the monitoring, and I have noticed there is one 
> client of the chart with ~7500, while the others are between ~17 and ~60 
> (dovecot_user_num_cmds).
> 
> I assume this is related to the client, or is it possible something is 
> wrong on the server side? Is someone having also such numbers or is this 
> really strange. Is it possible to limit these cmd's?

Maybe you should look into what command(s) are being executed first?

event_exporter cmd_export {
  format = json
  format_args = time-rfc3339
  transport = log
}

metric imap_command {
   event_name = imap_command_finished
   filter {
      user = anomalous
   }
   exporter = cmd_export
}

Aki


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