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This article explains how to debug a site if it is not accessible after a Checkmk Appliance update or a Checkmk update.

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titleLAST TESTED ON CHECKMK 2.3.0P1


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titleTable of Contents

Table of Contents

Problem

Your Checkmk site is not accessible anymore after you updated your appliance firmware, or Checkmk, or a simple reboot.

You are getting a 404 Apache error like the following:

Image Added

Reason

A lot The root of these issues go back to Werk 14281. lies in outdated appliance firmware.

Tip
All relevant background information

...

can be found in Werk 14281.


Info

We have seen this issue also on current firmware occasionally. We are investigating this, but the first two steps of the solution below might still work for you.

Solution

The solution is rather simple and outlined in the abovementioned aforementioned Werk:

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  1. Log into your appliance as root.

  2. For each site that resides on the appliance, run the following

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    languagebash
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    OMD[mysite]~# omd update-apache-config $SITE

    .

  3. You should be back online now, but the next step is necessary for a permanent fix.

  4. As soon as possible, upgrade to an up-to-date firmware version.

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