nagios-charmers team mailing list archive

[Paul Goins <1983986@xxxxxxxxxxxxxxxxxx>]

Added the Ubuntu nagios-nrpe package as being affected by this bug.

In short: if you have a Bionic-based nagios talking to a Focal-based
nrpe, the version 3 packets from nagios will cause error messages to be
continually logged for nrpe.  The code on the NRPE side appears to be
intended for versions 2 through 4, but a specific check was likely
updated incorrectly when adding version 4 support, breaking version 3
support in NRPE.

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https://bugs.launchpad.net/bugs/1983986

Title:
  nrpe reports ssl issues on focal

Status in Nagios Charm:
  New
Status in nagios-nrpe package in Ubuntu:
  New

Bug description:
  We have many cloud deployments showing this particular issue. We were
  also able to reproduce this issue in the lab environment too using [1]

  In lab environment

  cd ~/stsstack-bundles/openstack

  ./generate-bundle.sh \
    --run \
    -n lma-focal \
    -s focal \
    --use-stable-charms \
    --overlay-network-type gre \
    --create-model \
    --num-compute 1 \
    --nagios \
    --lma

  After a moment, and once everything settles, we can login to
  keystone/0, and we will start to see the following messages occurring
  at ~30s intervals

  ~~~
  Aug  8 16:04:59 juju-8d5724-lma-focal-5 nrpe[51760]: Error: (use_ssl == true): Request packet version was invalid!
  Aug  8 16:04:59 juju-8d5724-lma-focal-5 nrpe[51760]: Could not read request from client 10.5.3.37, bailing out...
  Aug  8 16:04:59 juju-8d5724-lma-focal-5 nrpe[51760]: INFO: SSL Socket Shutdown.
  ~~~

  
  [1] https://github.com/canonical/stsstack-bundles

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