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Problem report
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Resolution: Fixed
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Critical
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7.0.20, 7.4.4
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None
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None
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Zabbix Agent 2: 7.0.20 (upgrade from 7.0.19)
Installation method: official DEB packages via APT
OS: Debian GNU/Linux 12.12 (“bookworm”) x86_64 (kernel 6.12)
OS2: Raspbian GNU/Linux 12.12 (“bookworm”) aarch64 (kernel 6.12)
Agent mode: active + passive
Server/Proxy version: 7.0.20 (LTS)
Host load prior to upgrade: normal, no persistent high CPU from agentZabbix Agent 2: 7.0.20 (upgrade from 7.0.19) Installation method: official DEB packages via APT OS: Debian GNU/Linux 12.12 (“bookworm”) x86_64 (kernel 6.12) OS2: Raspbian GNU/Linux 12.12 (“bookworm”) aarch64 (kernel 6.12) Agent mode: active + passive Server/Proxy version: 7.0.20 (LTS) Host load prior to upgrade: normal, no persistent high CPU from agent
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0.125
Steps to Reproduce
Upgrade Zabbix Agent 2 from 7.0.19 to 7.0.20 using APT.
Keep the previous configuration (/etc/zabbix/zabbix_agent2.conf) unchanged.
Observe the agent for a few minutes after service restart.
Expected Result
Agent CPU usage remains low and stable (sub-percent to a few percent during checks).
Actual Result
Within a few minutes, zabbix_agent2 reaches ~100% CPU and remains there indefinitely.
Evidence
Process snapshot:
ps aux | grep zabbix_agent zabbix 2052826 99.3 0.1 2142772 54332 ? Ssl 05:53 97:39 /usr/sbin/zabbix_agent2 -c /etc/zabbix/zabbix_agent2.conf
