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Adds externalClusters connectionParameters + replica.self/primary/source to all four Cluster CRs (home pg-gitlab/pg-praefect, VPS pg-gitlab/pg-praefect), turning last commit's recovery-only replicas into real CNPG streaming replicas - exact pattern already proven for pg-authentik. TLS certs copied cross-cluster manually (kubectl, not git, same as every other cross-cluster secret in this plan). Also adds pg-gitlab-app/pg-praefect-app password sync (PushSecret home -> Vault -> ExternalSecret VPS, Merge policy) - CNPG-generated passwords stay in sync via WAL replication but the K8s Secret OBJECTS never resync on their own, same gap already closed for pg-authentik-app. VPS's standalone clusters were already destroyed and recreated as recovery-mode replicas in the prior commit (with the user's explicit help running the classifier-blocked kubectl delete) - this commit turns on the actual streaming replication on top of that. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
145 lines
4.9 KiB
YAML
145 lines
4.9 KiB
YAML
---
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# GitLab cross-site replication Phase 1c (see
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# /home/scooby/.claude/plans/jiggly-snacking-iverson.md) - was a fully
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# independent standalone cluster (own initdb, own root/Scooby test data,
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# never meant to survive this). Now a real replica of home's pg-gitlab
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# (apps/gitlab/manifests/cnpg-cluster.yaml), matching the pattern already
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# proven for pg-authentik.
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#
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# Deployed in two stages, same as the original authentik/n8n/nextcloud
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# VPS replicas were: first as a plain bootstrap.recovery replica (this
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# commit - no externalClusters/replica streaming config yet, since that
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# needs THIS cluster's own CNPG-generated certs to exist first, which
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# only happens once the cluster itself exists), then a second commit adds
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# the streaming replication config once those certs have been copied
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# cross-cluster.
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#
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# postgresql.parameters MUST match-or-exceed home's - copied verbatim
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# from apps/gitlab/manifests/cnpg-cluster.yaml. A replica can't replay
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# WAL past a checkpoint recorded with higher settings than its own
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# ("recovery aborted because of insufficient parameter settings",
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# confirmed live for pg-authentik).
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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-gitlab
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namespace: gitlab
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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 1GB below needs headroom - matches home's requests/limits.
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resources:
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requests:
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memory: "1Gi"
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cpu: "50m"
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limits:
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memory: "4Gi"
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cpu: "500m"
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storage:
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size: 50Gi # matches home's size
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storageClass: local-path
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primaryUpdateStrategy: unsupervised
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postgresql:
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parameters:
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max_connections: "400"
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shared_buffers: "1GB"
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effective_cache_size: "3GB"
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maintenance_work_mem: "256MB"
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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: "16MB"
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min_wal_size: "1GB"
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max_wal_size: "4GB"
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max_worker_processes: "4"
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max_parallel_workers_per_gather: "2"
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max_parallel_workers: "4"
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bootstrap:
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recovery:
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source: home
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# Stage 2 (see /home/scooby/.claude/plans/jiggly-snacking-iverson.md):
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# connectionParameters added alongside the existing barmanObjectStore
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# on the SAME "home" entry - the recovery-mode initial seed stays
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# exactly as-is, ongoing replication now streams instead of relying on
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# WAL-archive polling (the source of the crash-looping/probe-tuning
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# fights documented for the pg-authentik precedent). Also needs a
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# self-referencing "vps" entry - replica.self must match an
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# externalClusters name too, even though it's this very cluster
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# (confirmed live: "External cluster vps not found" until one was
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# added).
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#
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# Reachable via home.kube.huskypup.net:61442 - a UniFi WAN port-forward
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# to talos-cp-01's real LAN IP, source-IP-restricted to the VPS/witness
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# public IPs (see apps/gitlab/manifests/ha-postgres-nodeport.yaml). NOT
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# the Netbird mesh directly - UniFi has no route to that CIDR
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# (confirmed live for the pg-authentik precedent).
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externalClusters:
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- name: home
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barmanObjectStore:
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# serverName defaults to the externalClusters[].name, NOT the
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# source Postgres cluster's actual metadata.name - home's own
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# backup: block defaults serverName to "pg-gitlab" (its own
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# name). Without this override, recovery looks under the wrong
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# server-name prefix and finds nothing (confirmed live for the
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# pg-authentik precedent).
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serverName: pg-gitlab
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destinationPath: s3://cnpg-backups/pg-gitlab
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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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connectionParameters:
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host: home.kube.huskypup.net
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port: "61442"
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dbname: gitlabhq_production
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user: streaming_replica
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sslmode: verify-ca
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sslCert:
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name: pg-gitlab-home-replication
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key: tls.crt
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sslKey:
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name: pg-gitlab-home-replication
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key: tls.key
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sslRootCert:
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name: pg-gitlab-home-ca
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key: ca.crt
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- name: vps
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connectionParameters:
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host: pg-gitlab-rw
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port: "5432"
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dbname: gitlabhq_production
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user: streaming_replica
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sslmode: verify-ca
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sslCert:
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name: pg-gitlab-replication
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key: tls.crt
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sslKey:
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name: pg-gitlab-replication
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key: tls.key
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sslRootCert:
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name: pg-gitlab-ca
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key: ca.crt
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# Distributed topology: both sides agree home is primary today. No
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# replica.enabled - mutually exclusive with primary/self (confirmed
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# live for the pg-authentik precedent).
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replica:
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self: vps
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primary: home
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source: home
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monitoring:
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enablePodMonitor: false # no Prometheus on the VPS cluster
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