feat: remove wal from cache after archiving #659
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Signed-off-by: Marco Nenciarini <[email protected]>
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armru
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Signed-off-by: Leonardo Cecchi <[email protected]>
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…v0.10.0 ##### [\`v0.10.0\`](https://github.com/cloudnative-pg/plugin-barman-cloud/releases/tag/v0.10.0) ##### Features - Add `pprof-server` support ([#538](cloudnative-pg/plugin-barman-cloud#538)) ([921b20c](cloudnative-pg/plugin-barman-cloud@921b20c)), closes [#421](cloudnative-pg/plugin-barman-cloud#421) - Remove wal from cache after archiving ([#659](cloudnative-pg/plugin-barman-cloud#659)) ([df22bf2](cloudnative-pg/plugin-barman-cloud@df22bf2)) ##### Bug Fixes - **deps:** Update all non-major go dependencies ([#685](cloudnative-pg/plugin-barman-cloud#685)) ([df2f91d](cloudnative-pg/plugin-barman-cloud@df2f91d)) - **deps:** Update all non-major go dependencies ([#701](cloudnative-pg/plugin-barman-cloud#701)) ([db96dcc](cloudnative-pg/plugin-barman-cloud@db96dcc)) - **deps:** Update k8s.io/utils digest to [`383b50a`](cloudnative-pg/plugin-barman-cloud@383b50a) ([#695](cloudnative-pg/plugin-barman-cloud#695)) ([95ef5dc](cloudnative-pg/plugin-barman-cloud@95ef5dc)) - **deps:** Update k8s.io/utils digest to [`9d40a56`](cloudnative-pg/plugin-barman-cloud@9d40a56) ([#684](cloudnative-pg/plugin-barman-cloud#684)) ([0ea3d91](cloudnative-pg/plugin-barman-cloud@0ea3d91)) - **deps:** Update kubernetes packages to v0.35.0 ([#694](cloudnative-pg/plugin-barman-cloud#694)) ([30dbc44](cloudnative-pg/plugin-barman-cloud@30dbc44)) - **deps:** Update module google.golang.org/grpc to v1.78.0 ([#697](cloudnative-pg/plugin-barman-cloud#697)) ([3f8d4f7](cloudnative-pg/plugin-barman-cloud@3f8d4f7)) - **deps:** Update module sigs.k8s.io/kustomize/api to v0.21.0 ([#651](cloudnative-pg/plugin-barman-cloud#651)) ([ef19031](cloudnative-pg/plugin-barman-cloud@ef19031)) - Don't log full environment variables at default log level ([#589](cloudnative-pg/plugin-barman-cloud#589)) ([a487c4e](cloudnative-pg/plugin-barman-cloud@a487c4e)) - **targetTime:** Treat RFC3339-like timestamps without timezone as UTC ([#700](cloudnative-pg/plugin-barman-cloud#700)) ([1f1d300](cloudnative-pg/plugin-barman-cloud@1f1d300)), closes [#699](cloudnative-pg/plugin-barman-cloud#699)
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…v0.10.0 ##### [\`v0.10.0\`](https://github.com/cloudnative-pg/plugin-barman-cloud/releases/tag/v0.10.0) ##### Features - Add `pprof-server` support ([#538](cloudnative-pg/plugin-barman-cloud#538)) ([921b20c](cloudnative-pg/plugin-barman-cloud@921b20c)), closes [#421](cloudnative-pg/plugin-barman-cloud#421) - Remove wal from cache after archiving ([#659](cloudnative-pg/plugin-barman-cloud#659)) ([df22bf2](cloudnative-pg/plugin-barman-cloud@df22bf2)) ##### Bug Fixes - **deps:** Update all non-major go dependencies ([#685](cloudnative-pg/plugin-barman-cloud#685)) ([df2f91d](cloudnative-pg/plugin-barman-cloud@df2f91d)) - **deps:** Update all non-major go dependencies ([#701](cloudnative-pg/plugin-barman-cloud#701)) ([db96dcc](cloudnative-pg/plugin-barman-cloud@db96dcc)) - **deps:** Update k8s.io/utils digest to [`383b50a`](cloudnative-pg/plugin-barman-cloud@383b50a) ([#695](cloudnative-pg/plugin-barman-cloud#695)) ([95ef5dc](cloudnative-pg/plugin-barman-cloud@95ef5dc)) - **deps:** Update k8s.io/utils digest to [`9d40a56`](cloudnative-pg/plugin-barman-cloud@9d40a56) ([#684](cloudnative-pg/plugin-barman-cloud#684)) ([0ea3d91](cloudnative-pg/plugin-barman-cloud@0ea3d91)) - **deps:** Update kubernetes packages to v0.35.0 ([#694](cloudnative-pg/plugin-barman-cloud#694)) ([30dbc44](cloudnative-pg/plugin-barman-cloud@30dbc44)) - **deps:** Update module google.golang.org/grpc to v1.78.0 ([#697](cloudnative-pg/plugin-barman-cloud#697)) ([3f8d4f7](cloudnative-pg/plugin-barman-cloud@3f8d4f7)) - **deps:** Update module sigs.k8s.io/kustomize/api to v0.21.0 ([#651](cloudnative-pg/plugin-barman-cloud#651)) ([ef19031](cloudnative-pg/plugin-barman-cloud@ef19031)) - Don't log full environment variables at default log level ([#589](cloudnative-pg/plugin-barman-cloud#589)) ([a487c4e](cloudnative-pg/plugin-barman-cloud@a487c4e)) - **targetTime:** Treat RFC3339-like timestamps without timezone as UTC ([#700](cloudnative-pg/plugin-barman-cloud#700)) ([1f1d300](cloudnative-pg/plugin-barman-cloud@1f1d300)), closes [#699](cloudnative-pg/plugin-barman-cloud#699)
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Summary
This PR fixes the memory leak in the plugin-barman-cloud container where memory usage continuously increases on primary instances during WAL archiving.
Motivation
The plugin-barman-cloud container on primary instances was experiencing ever-increasing memory usage due to archived WAL files accumulating in the OS page cache. In Kubernetes environments running on large machines, memory pressure is typically insufficient to naturally evict these cached files, causing them to waste memory that could be used for active workloads.
Changes
After successfully archiving a WAL file, the plugin now explicitly drops it from the OS page cache using
fadvise(FADV_DONTNEED). This prevents archived WALs from accumulating in memory and causing the observed memory leak.Dependencies
This PR depends on cloudnative-pg/barman-cloud#169
Closes #385