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https://gitlab.kube.huskypup.net/Scooby/Homelabv4.git
synced 2026-08-21 11:36:50 +00:00
Phase 2: deploy n8n and Nextcloud warm standbys on the VPS
Same CNPG replica-cluster pattern as Authentik (continuous WAL replay from home via VPS MinIO, app at 0 replicas until manual promotion - see infrastructure/vps-standby/authentik/manifests/cnpg-cluster.yaml for the full rationale). n8n: N8N_ENCRYPTION_KEY copied byte-identical from home (kubectl, not git) - decrypts stored credentials in the replicated DB, same reasoning as Vault's unseal key / root token copies. Nextcloud: adds infrastructure/vps-standby/nextcloud/manifests/ pvc-restore-cronjob.yaml, the read side of home's existing nextcloud-pvc-sync restic backup - restores the latest snapshot from VPS MinIO into this standby's PVC daily at 04:00 (2h after home's 02:00 backup). No Redis on the VPS side (no redis-operator deployed there, out of scope for a standby that isn't serving traffic - Nextcloud degrades gracefully to DB-based locking without it).
This commit is contained in:
Scooby Husky
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---
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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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resources:
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requests:
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memory: "256Mi"
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cpu: "25m"
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limits:
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memory: "1Gi"
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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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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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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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# n8n warm standby on the VPS - Phase 2. Same discipline as
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# infrastructure/vps-standby/authentik/values.yaml: the CNPG replica
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# cluster keeps the DB continuously warm in the background, but the app
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# itself stays at replicaCount: 0 until a deliberate manual promotion
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# (flip pg-n8n's spec.replica.enabled to false, then scale this up).
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#
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# N8N_ENCRYPTION_KEY must be byte-identical to home's - it decrypts
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# stored credentials (API keys, OAuth tokens, etc.) that live encrypted
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# in the DB being replicated. Unlike Authentik's chart-deterministic
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# secret_key, n8n's isn't derived from anything reproducible - it's
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# copied for real (kubectl, not git, same as Vault's unseal key /
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# root token):
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# kubectl -n n8n create secret generic n8n-config-secret \
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# --from-literal=encryption-key=<home's N8N_ENCRYPTION_KEY>
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image:
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repository: n8nio/n8n
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tag: "2.0.3"
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config:
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database:
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type: postgresdb
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postgresdb:
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host: pg-n8n-rw
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port: 5432
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database: n8n
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user: n8n
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schema: public
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generic:
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timezone: America/New_York
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path: /
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host: n8n.kube.huskypup.net
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port: 5678
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protocol: https
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executions:
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mode: regular
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saveDataOnError: all
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saveDataOnSuccess: all
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saveDataManualExecutions: true
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pruneData: true
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pruneDataMaxAge: 3760
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secret: {}
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# Not run in normal operation - see file header.
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replicaCount: 0
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service:
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type: ClusterIP
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port: 80
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securityContext:
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allowPrivilegeEscalation: false
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capabilities:
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drop:
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- ALL
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seccompProfile:
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type: RuntimeDefault
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ingress:
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enabled: false
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persistence:
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enabled: true
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type: existing
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existingClaim: n8n-main-persistence
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storageClass: local-path
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accessModes:
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- ReadWriteOnce
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size: 10Gi
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resources:
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requests:
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cpu: 50m
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memory: 256Mi
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limits:
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cpu: "500m"
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memory: 512Mi
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extraEnvSecrets:
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DB_POSTGRESDB_PASSWORD:
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name: pg-n8n-app
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key: password
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N8N_ENCRYPTION_KEY:
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name: n8n-config-secret
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key: encryption-key
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extraEnv:
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WEBHOOK_URL: https://n8n.kube.huskypup.net/
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N8N_EDITOR_BASE_URL: https://n8n.kube.huskypup.net
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N8N_LOG_LEVEL: error
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postgresql:
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enabled: false
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redis:
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enabled: false
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scaling:
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enabled: false
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extraVolumes: []
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extraVolumeMounts: []
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nodeSelector: {}
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tolerations: []
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affinity: {}
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