Branch: refs/heads/master Home: https://github.com/tribe29/checkmk Commit: b622ade4073a87575d1509c2522482999abc40e6 https://github.com/tribe29/checkmk/commit/b622ade4073a87575d1509c2522482999… Author: Andreas Umbreit &lt;andreas.umbreit(a)tribe29.com&gt; Date: 2021-06-08 (Tue, 08 Jun 2021) Changed paths: A .werks/12679 Log Message: ----------- 12679 FIX cmk-update-agent: Prevent crash on missing "Content-Length" HTTP header Previously, the agent updater expected a "Content-Length" HTTP header in responses from the Checkmk server, and crashed with error message<br> <tt>KeyError: 'content-length'</tt><br> if it was missing. This is fixed now. This werk is marked as incompatible, because manual interaction might be needed to overcome the error on a host. You can either install the newly baked agent manually on affected hosts, or prevent the cause that leads to the missing "Content-Lenght" header: An observed cause for the missing header can be an activated transport compression at some point in the infrastructure between Checkmk server and host. To prevent this, you can add the line<br> <tt>SetEnv no-gzip dont-vary</tt><br> at the top of the config file <tt>/etc/apache2/conf-enabled/zzz_omd.conf</tt> on the server running Checkmk, and reload the system apache with <tt>systemctl reload apache</tt>. SUP-6513 Change-Id: I2c1b74d10cb5aa09f482eac3937dfcf7f349553d