SAS-62 clusterd: set TCP keepalive sysctls on pods#36351
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jubrad merged 1 commit intoMaterializeInc:mainfrom May 1, 2026
Merged
SAS-62 clusterd: set TCP keepalive sysctls on pods#36351jubrad merged 1 commit intoMaterializeInc:mainfrom
jubrad merged 1 commit intoMaterializeInc:mainfrom
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Container network namespaces get default kernel values, not the host's
custom sysctl settings. This means host-level TCP keepalive tuning was
being silently overwritten by container defaults.
Add net.ipv4.tcp_keepalive_{time,intvl,probes} to the clusterd
PodSecurityContext so the values are enforced at the Kubernetes pod
spec level.
Also adds validation in the orchestratord integration tests to assert
the sysctls are present on clusterd pods.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
net.ipv4.tcp_keepalive_time=300,net.ipv4.tcp_keepalive_intvl=30,net.ipv4.tcp_keepalive_probes=3to the clusterdPodSecurityContextvalidate_clusterd_pod()to the orchestratord integration tests, called from all three existing clusterd pod validation sites (SwapEnabledGlobal,StorageClass,ClusterdCpu)