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

  • Hi,


    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[127.0.0.1:80] 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

  • 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.

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