Hi Vasiliy, > Does it possible to monitor ovn service uptime? If uptime bigger then before > - service is restarted.
True, one can do that. Personally, I prefer gauges over counters for the monitoring. > I think that it is not right way. Sometimes i want to write logs to syslog or > journald... Then, you don't use that metric for alerting and scraping. > For what this mertic can be used? If i have debian and fedora systems and > this dir may changed over distributions.... I run OVN on CentOS boxes and from time to time I change run_dir. It helps my awareness. If I do change run_dir, and it lasts for more than a day, I alert :-))))) Regards, Paul From: Vasiliy Tolstov <[email protected]> Sent: Friday, October 5, 2018 4:34 PM To: [email protected] Cc: Василий Толстов; [email protected] Subject: Re: [ovs-discuss] Prometheus Exporter for OVN > > Here is the thinking on this one. The presence of pid file and the validation > that the process listed in the pid file are process checks. If the process is > 0, then it is down and one can monitor for that. Also, if the process ID of a > subsystem (say OVN NB) changed, then it means that service was restarted. I > guess the alert would be if a process is 0 or if the process ID changed, then > alert. > Does it possible to monitor ovn service uptime? If uptime bigger then before - service is restarted. > Per the log files. It happened on a number of occasions that a subsystem > crashed, but its process was still running. One way of detecting something > like that is watch for the log file being stale, i.e. log size does not > increment. There are obviously other ways to monitor that. Also, any spike in > log activity, i.e. sudden large increase in log file size, means something is > happening and it worth looking into it. I think that it is not right way. Sometimes i want to write logs to syslog or journald... > > > also system run dir. May be to monitor disk > space, but i'm confused. > > That's really informational. Kinda know where system dir is. For what this mertic can be used? If i have debian and fedora systems and this dir may changed over distributions.... -- Vasiliy Tolstov, e-mail: [email protected] _______________________________________________ discuss mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
