nginx restart as failed protocol test http - linked to rrdcached flushall

    • OMV 3.x
    • nginx restart as failed protocol test http - linked to rrdcached flushall


      I have latest OMV 3 running on a RPi. All is working fine but...

      I have recently noticed in the logs that nginx fails a protocol test and restarts many times per day. see log entry below.

      monit[1134]: 'nginx' failed protocol test [HTTP] at INET[] via TCP -- HTTP: Error receiving data -- Resource temporarily unavailable

      this error triggers a restart of nginx which is successful. 15 minutes later the same thing happens again...

      Looking at the logs, this error seems to happen after the rrdcached process does the flushall command.

      Any ideas? I have done a reboot but the issue persists.

      Many thanks
    • Seems that the rrdcache process consumes the whole CPU which leads to an none responding nginx process.
      Absolutely no support through PM!

      I must not fear.
      Fear is the mind-killer.
      Fear is the little-death that brings total obliteration.
      I will face my fear.
      I will permit it to pass over me and through me.
      And when it has gone past I will turn the inner eye to see its path.
      Where the fear has gone there will be nothing.
      Only I will remain.

      Litany against fear by Bene Gesserit
    • thanks for the help. I have monitoring on and I been looking the CPU and it is never above 20%.

      what steps would you suggest to investigate further? I was thinking about turning off monitoring to see if this fixes the issue.

      The strange thing is this is problem started happening recently but I haven't changed anything on my system for weeks.