fix(loki.rules.kubernetes, mimir.rules.kubernetes): add timeout to ruler sync calls#5963
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QuentinBisson wants to merge 5 commits intografana:mainfrom
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fix(loki.rules.kubernetes, mimir.rules.kubernetes): add timeout to ruler sync calls#5963QuentinBisson wants to merge 5 commits intografana:mainfrom
QuentinBisson wants to merge 5 commits intografana:mainfrom
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…ler sync calls Add a 30s context timeout to the ListRules calls in syncLoki and syncMimir to prevent the event loop goroutine from blocking indefinitely when the remote ruler is unreachable (e.g. due to a firewall blackhole). The shared RulerSyncTimeout constant is defined once in the common kubernetes package and reused by both components.
QuentinBisson
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Apr 4, 2026
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Brief description of Pull Request
Add a 30s context timeout to the
ListRules(ruler sync) calls inloki.rules.kubernetesandmimir.rules.kubernetesto prevent the event loop goroutine from blocking indefinitely on transient network issues.Previously,
syncLokiandsyncMimirpassed the raw component context (no deadline) to the HTTP client. If the remote ruler was unreachable silently (e.g. firewall blackhole, no TCP RST), the request would hang forever, blocking the single event-loop goroutine and preventing any further event processing or recovery.The shared
RulerSyncTimeoutconstant is defined once in theinternal/component/common/kubernetespackage and reused by both components to avoid duplication.PR Checklist