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[Bug 1793328] Re: Add check for DNS resolution

 

This could be very noisy on a cloud if enabled by default.  Suggest we
might want to make it a disabled option by default, but allow for it to
be enabled as needed on smaller deploys of the charm, such as nrpe-lxd-
service-checks that could get related to something like landscape,
nagios, graylog.  Or perhaps this could be builtin to the nagios charm
itself.

** Also affects: nagios-charm
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1793328

Title:
  Add check for DNS resolution

Status in Nagios Charm:
  New
Status in NRPE Charm:
  Confirmed

Bug description:
  We should add a check for DNS resolution working in good fashion.

  Checking both for timeouts and ability to look up a particular
  address.

  Defaults should probably be warn at 10 seconds, crit at 30 seconds,
  lookup archive.ubuntu.com.

  This will help us identify upstream and cloud DNS issues.

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