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--- manuals:vps:incidents [2024/04/15 07:14] – Add descriptions for mysql/postgres/redis/dns/malware aither
+++ manuals:vps:incidents [2025/08/16 12:29] (current) – oomd aither
@@ Line 105: / Line 105: @@
 of installed packages, but that won't include your data and system configuration files.
 It's best to reinstall the VPS and configure it anew.
+===== oomd =====
+The VPS reached its memory limit. As a result, processes were stalled waiting for free memory, while holding shared kernel locks. This had a negative impact not only on the VPS itself but also on other VPSes and the entire node.
+To avoid this, make sure your service configuration prevents more worker processes from starting (e.g. web servers, Apache workers, PHP processes, etc.) than your VPS can handle — even during temporary traffic spikes.
 ===== open-memcached =====

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