mirror of
https://gitlab.kube.huskypup.net/Scooby/Homelabv4.git
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Scooby Husky
a21a8601f3
Confirmed live: 'spec.replica.source: Required value' even though home isn't actually replicating from anyone (self == primary). Set to its own self-referencing entry name.
156 lines
5.4 KiB
YAML
156 lines
5.4 KiB
YAML
apiVersion: postgresql.cnpg.io/v1
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kind: Cluster
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metadata:
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name: pg-authentik
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namespace: authentik
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spec:
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imageName: ghcr.io/cloudnative-pg/postgresql:16
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instances: 2
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# Resource limits to prevent OOM
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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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# Spread replicas across different nodes
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affinity:
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topologyKey: kubernetes.io/hostname
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storage:
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size: 5Gi
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storageClass: rook-ceph-block
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primaryUpdateStrategy: unsupervised
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# PostgreSQL configuration for better performance
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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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initdb:
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database: app
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owner: app
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# Backup to VPS MinIO - RE-ENABLED 2026-08-18. Real pod-egress routing to
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# the VPS now exists (netbird-egress DaemonSet, hostNetwork + per-node
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# route into 100.108.0.0/16 - see infrastructure/netbird/manifests/
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# egress-daemonset.yaml). Endpoint changed from the NodePort
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# (vps-minio.netbird.internal:30900 - never resolvable anyway, Netbird has
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# no DNS configured, and separately blocked by Netbird's own ACL model,
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# which only permits *established* forwarded connections through a peer,
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# never new ones) to a locally-terminated socat forward on the VPS host
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# itself (100.108.113.41:9000 - see minio-forward.service on the VPS),
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# mirroring the pattern that already worked for the CrowdSec CAPI proxy.
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backup:
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barmanObjectStore:
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destinationPath: s3://cnpg-backups/pg-authentik
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endpointURL: http://100.108.113.41:9000
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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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wal:
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compression: gzip
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maxParallel: 2
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retentionPolicy: "30d"
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monitoring:
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enablePodMonitor: true
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# Multi-site active failover pilot (see
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# /home/scooby/.claude/plans/jiggly-snacking-iverson.md) - streaming
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# replication to/from the VPS's pg-authentik cluster, alongside (not
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# replacing) the barmanObjectStore backup above.
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#
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# Auth: reuses CNPG's own generated streaming_replica client cert
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# (CN=streaming_replica, issued by the VPS's own pg-authentik CA) -
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# copied here manually as pg-authentik-vps-{ca,replication} (kubectl,
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# not git - same pattern as every other cross-cluster secret tonight).
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# This is the exact credential CNPG's own pg_hba.conf already trusts
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# for streaming replication, nothing new to provision.
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#
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# sslmode: verify-ca (not verify-full) - the VPS's server cert was
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# issued for its in-cluster DNS names, not for the NodePort IP address
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# (100.108.113.41) home actually dials; verify-ca still validates the
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# cert chain/CA trust and encrypts the connection, just skips hostname
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# matching.
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#
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# Reachable via 100.108.113.41 (VPS's Netbird IP) - home reaching OUT
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# to the VPS already works today via the netbird-egress DaemonSet's
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# route (same path used for MinIO/CrowdSec backups all session) - no
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# UniFi port-forward needed for this direction, only the reverse
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# (VPS/witness reaching INTO home) needed that.
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# CNPG's distributed-topology validation requires both replica.self and
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# replica.primary to reference names present in THIS cluster's OWN
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# externalClusters list - including a self-referencing entry (confirmed
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# live: "External cluster home not found" until one was added, even
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# though "home" is this very cluster). The "home" entry's
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# connectionParameters point at its own local -rw service - never
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# actually dialed while primary: home (that's this cluster), it only
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# exists to satisfy the name-reference validation.
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externalClusters:
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- name: home
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connectionParameters:
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host: pg-authentik-rw
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port: "5432"
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dbname: app
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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-authentik-replication
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key: tls.crt
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sslKey:
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name: pg-authentik-replication
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key: tls.key
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sslRootCert:
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name: pg-authentik-ca
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key: ca.crt
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- name: vps
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connectionParameters:
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host: 100.108.113.41
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port: "32433"
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dbname: app
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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-authentik-vps-replication
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key: tls.crt
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sslKey:
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name: pg-authentik-vps-replication
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key: tls.key
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sslRootCert:
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name: pg-authentik-vps-ca
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key: ca.crt
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# Distributed topology: both sides agree home is primary today. Failover
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# flips the VPS's replica.primary to "vps" (+ promotion token) - see the
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# plan doc's failover-watcher section. Failback is the same in reverse,
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# deliberately manual. No replica.enabled here - that flag belongs to
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# CNPG's older single-source replica-cluster mode and is mutually
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# exclusive with primary/self (confirmed live: "replica mode enabled is
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# not compatible with the primary field").
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replica:
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self: home
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primary: home
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source: home # required unconditionally by the admission webhook, even though home isn't actually replicating from anyone right now (self == primary)
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