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Scooby Husky
a1d6091122
Postgres refuses to replay WAL past a checkpoint recorded with higher max_connections/max_wal_senders/etc than the recovering instance's own settings: 'recovery aborted because of insufficient parameter settings: max_connections = 100 is a lower setting than on the primary server, where its value was 200' - confirmed live on all 3 VPS clusters (they had no postgresql.parameters block at all, defaulting to CNPG's 100). Copied home's full postgresql.parameters block to remove any other potential mismatch (max_wal_senders, max_worker_processes are subject to the same check). Bumped memory requests/limits to match home too - shared_buffers: 512MB needs headroom the previous 256Mi/1Gi didn't have.
80 lines
2.4 KiB
YAML
80 lines
2.4 KiB
YAML
---
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# CNPG replica cluster continuously replaying WAL from home's pg-n8n
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# (apps/n8n/manifests/cnpg-cluster.yaml) via VPS MinIO's
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# cnpg-backups/pg-n8n bucket path. Same pattern as
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# infrastructure/vps-standby/authentik/manifests/cnpg-cluster.yaml - see
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# that file's comments for the full rationale (replica-cluster mode vs.
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# custom restore scripting, read-only until manual promotion).
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#
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# vps-minio-secret is a plain Secret copied here manually (kubectl, not
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# git), same as the authentik one:
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# kubectl -n n8n create secret generic vps-minio-secret \
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# --from-literal=accesskey=<vps minio root user> \
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# --from-literal=secretkey=<vps minio root password>
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apiVersion: postgresql.cnpg.io/v1
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kind: Cluster
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metadata:
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name: pg-n8n
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namespace: n8n
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spec:
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imageName: ghcr.io/cloudnative-pg/postgresql:16
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instances: 1
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# shared_buffers: 512MB above needs headroom - matches home's requests/limits.
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resources:
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requests:
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memory: "512Mi"
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cpu: "25m"
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limits:
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memory: "2Gi"
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cpu: "250m"
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storage:
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size: 10Gi
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storageClass: local-path
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# See infrastructure/vps-standby/authentik/manifests/cnpg-cluster.yaml
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# for why this must match home's settings (recovery aborts otherwise).
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postgresql:
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parameters:
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max_connections: "200"
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shared_buffers: "512MB"
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effective_cache_size: "1536MB"
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maintenance_work_mem: "128MB"
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checkpoint_completion_target: "0.9"
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wal_buffers: "16MB"
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default_statistics_target: "100"
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random_page_cost: "1.1"
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effective_io_concurrency: "200"
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work_mem: "2621kB"
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min_wal_size: "1GB"
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max_wal_size: "4GB"
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bootstrap:
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recovery:
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source: home-backup
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externalClusters:
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- name: home-backup
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barmanObjectStore:
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# See infrastructure/vps-standby/authentik/manifests/cnpg-cluster.yaml
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# for why this override is required (serverName defaults to the
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# externalClusters[].name, not the source cluster's real name).
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serverName: pg-n8n
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destinationPath: s3://cnpg-backups/pg-n8n
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endpointURL: http://vps-minio.minio.svc.cluster.local:9000
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s3Credentials:
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accessKeyId:
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name: vps-minio-secret
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key: accesskey
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secretAccessKey:
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name: vps-minio-secret
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key: secretkey
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replica:
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enabled: true
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source: home-backup
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monitoring:
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enablePodMonitor: false
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