Make silo replicas configurable and add PDBs for HA#5774
Make silo replicas configurable and add PDBs for HA#5774google-labs-jules[bot] wants to merge 2 commits intomainfrom
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- Makes `silo` replica count configurable in `values.yaml` (default: 1). - Adds `PodDisruptionBudget` templates for `website`, `backend`, `silo`, and `lapis` with configurable `maxUnavailable` (default: 1). - Adds `podAntiAffinity` (preferred) to deployment templates for `website`, `backend`, `silo`, and `lapis` to encourage scheduling on different nodes. - Updates `values.schema.json` to include new configuration options.
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- Makes `silo` replica count configurable in `values.yaml` (default: 1). - Adds `PodDisruptionBudget` templates for `website`, `backend`, `silo`, and `lapis` (in deployment files) with configurable `maxUnavailable` (default: 1). - Adds `podAntiAffinity` (preferred) to deployment templates for `website`, `backend`, `silo`, and `lapis` to encourage scheduling on different nodes. - Updates `values.schema.json` to include new configuration options.
This PR addresses the issue of downtime during Kubernetes node drains for services like
siloandlapis.Changes:
replicas.silotovalues.yamlandvalues.schema.json.silo-deployment.yamlto use this value instead of being hardcoded to 1.pdbsection tovalues.yamlforwebsite,backend,silo, andlapis.maxUnavailable: 1, which allows node drains even with 1 replica (causing downtime) but ensures availability if replicas are scaled to >1.preferredDuringSchedulingIgnoredDuringExecutionanti-affinity rules toloculus-backend,loculus-website,lapis-deployment, andsilo-deploymenttemplates.PR created automatically by Jules for task 8320007074027152157 started by @corneliusroemer
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