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Info
This might be caused by a bug that has been addressed and fixed with 2.0.0p9: https://checkmk.com/werk/12663

Status

colour	Green
title	LAST TESTED ON CHECKMK 2.0.0P1

Panel

borderColor	black
bgColor	#f8f8f8
title	Table of Contents

Table of Contents

Problem

In a distributed setup, you encounter the following problems on the central site.:

The GUI on the central site randomly becomes very slow, and the "liveproxyd.log" gets filled with hundreds of these entries:

Code Block

language	bash
theme	RDark

2021-09-30 16:24:45,502 [40] [cmk.liveproxyd.(5252).Site(<remote_site_name>).Client(81)] Reading request from client took longer than 5s
Traceback (most recent call last):
File "/omd/sites/mysite/lib/python3/cmk/cee/liveproxy/Client.py", line 150, in receive_new_request
request = self._receive_request()
File "/omd/sites/mysite/lib/python3/cmk/cee/liveproxy/Client.py", line 339, in _receive_request
raise ClientRequestTimeoutException(
cmk.cee.liveproxy.Client.ClientRequestTimeoutException: Reading request from client took longer than 5s

Solution

It seems the livestatus is bombarded with hundreds of requests per second.

You probably might find this one:

Code Block

language	bash
theme	RDark

Reading requests from client took longer than 5s

This is caused by the GUI, which establishes a connection with the Liveproxyd but then does not send any query. This could indicate an overload of either the GUI or Liveproxyd.

Panel

borderColor	black
bgColor	#F8F8F8

If the werk mentioned above is the cause, this workaround might also help before installing p9:

Remove all Host/Service Statistics Snapins in all dashboards
Save them
Re-add them
Then reload all dashboards in the browser.

If this does not work, please open a ticket and add the ~/var/log/apache/access_log of some of the affected sites, which might show many entries like

"ajax_figure_dashlet_data"

Versions Compared

Old Version 16

New Version 17

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Problem

Solution

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