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|
apiVersion: apps/v1
kind: Deployment
metadata:
name: docker-registry
namespace: infra
labels:
app: docker-registry
spec:
replicas: 1
# Recreate so the old pod fully terminates before the new one starts —
# avoids NFS-lock races on the hostPath-backed PVC during rolling updates.
strategy:
type: Recreate
selector:
matchLabels:
app: docker-registry
template:
metadata:
labels:
app: docker-registry
spec:
initContainers:
- name: nfs-check-registry
image: busybox:stable
command:
- sh
- -c
- |
test -f /mnt/.nfs-sentinel || (
echo "ERROR: NFS sentinel missing at /mnt/.nfs-sentinel"
echo "refusing to start; node likely has NFS unmounted"
echo "pod would otherwise bind-mount the local-XFS shadow"
exit 1
)
volumeMounts:
- name: registry-storage
mountPath: /mnt
readOnly: true
containers:
- name: registry
image: registry:2
ports:
- containerPort: 5000
# Startup probe: give registry time to initialize (especially if NFS is slow)
startupProbe:
httpGet:
path: /v2/
port: 5000
initialDelaySeconds: 5
periodSeconds: 5
timeoutSeconds: 3
failureThreshold: 12 # 60 seconds total (12 * 5s)
# Liveness probe: restart pod if registry returns 503 (stale NFS) or becomes unresponsive
livenessProbe:
httpGet:
path: /v2/
port: 5000
periodSeconds: 30
timeoutSeconds: 5
failureThreshold: 3 # Restart after 90 seconds of failures
# Readiness probe: remove from service if not ready
readinessProbe:
httpGet:
path: /v2/
port: 5000
periodSeconds: 10
timeoutSeconds: 3
failureThreshold: 2
volumeMounts:
- name: registry-storage
mountPath: /var/lib/registry
volumes:
- name: registry-storage
persistentVolumeClaim:
claimName: docker-registry-pvc
|
