Upgrade to 7.4.4 zabbix_agent2 results in 100% CPU usage

[ams047]

I upgraded zabbix_agent2 from 7.4.3-1 to 7.4.4-1 on my Debian 11 and 12 hosts, and openSUSE 15.6 and within a minute it claimed 100%+ CPU usage across all hosts providing databases (mysql and postgresql). Those that are not running databases were unaffected.

My solution was to downgrade back down to 7.4.3-1 on the affected hosts and all is well again.

Anyone else affected by this issue - is there something in their cfg that needed upgrading, or should I just file a bug?

[jonad2002]

I too am seeing precisely this behavior. 100% CPU for zabbix_agent2 7.4.4 and MySQL. I can state that this occurs for a fresh uncustomized configuration of MySQL as well as an uncustomized agent2 .conf. I bumped up debug = 4 and did not see anything in that output that was unexpected. Just the agent2 process pegged for CPU.

[d2inco]

Hate to add a "me too", but: me too. Zabbix-agent2, on a host with only Mysql and Redis running. Running as an "active agent".

[stoege]

same here ... downgrade to 7.4.3 solved the problem. server is running on debian 12 with mariadb 10.11.14.

[cerealx]

Same here on 2 hosts with mariadb 11.8.3 on debian 12 and debian 13

[manusfreedom]

Same here with Zabbix-agent2 and MariaDB (11.4), but on Zabbix 7.0.20.

[brechsteiner]

Same here with zabbix-agent2

• Zabbix Agent2 7.0.20-1+debian12
• MariaDB Server 10.11.14+maria~deb12

[brechsteiner]

Has anyone already created a ticket on support.zabbix.com?

[jonad2002]

Given that I am one of the unwashed heathen (e.g. non-paying customer as this is a homelab installation) :-) I myself can't open tickets -- but someone already has: https://support.zabbix.com/browse/ZBX-27170

[Calypso]

Just got zabbix agent 2 v 7.4.5 on the affected hosts and the issue is still present

[jonad2002]

Confirmed. I tried 7.4.5-1. Agent2 still pegged 100%. Rolled back again to 7.4.3-1.

[aaxvig]

Same on 7.0.21, Debian 13. PostgreSQL and MariaDB are installed--both from stock Debian packages. `apt install zabbix-agent2=1:7.0.19-1+debian13` seems to have fixed it.

[cerealx]

Fixed for me with the latest minor version update

[jonad2002]

Confirmed: 7.0.21-2, 7.4.5-2 -- I didn't test 7.0.21, but the -2 iteration of 7.4.5 resolved for my environments.

[aaxvig]

Relevant bug is ZBX-27156.

[juanorotor]

Good morning, we are experiencing errors when trying to load templates for some devices. We are running installation 7.44, and we suspect that the templates we have are designed for version 7.0 LTS. Is there a way to reinstall Zabbix without losing the list of devices, or is it necessary to load them again from scratch?

Thank you very much in advance.