I'm using mysql Kubernetes statefulset, i mapped PVs to host directory (CentOS 8 VM) but getting " pod has unbound immediate PersistentVolumeClaims"
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: mysql-container
spec:
serviceName: mysql
replicas: 1
selector:
matchLabels:
app: mysql-container
template:
metadata:
labels:
app: mysql-container
spec:
containers:
- name: mysql-container
image: mysql:dev
imagePullPolicy: "IfNotPresent"
envFrom:
- secretRef:
name: prod-secrets
ports:
- containerPort: 3306
# container (pod) path
volumeMounts:
- name: mysql-persistent-storage
mountPath: /var/lib/mysql
volumes:
- name: mysql-persistent-storage
persistentVolumeClaim:
claimName: mysql-pvc
volumeClaimTemplates:
- metadata:
name: data
spec:
storageClassName: localstorage
accessModes: ["ReadWriteOnce"]
resources:
requests:
storage: 3Gi
selector:
matchLabels:
type: local
Storage class is defaulr and no events in PV
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: localstorage
provisioner: kubernetes.io/no-provisioner
volumeBindingMode: Immediate
reclaimPolicy: Delete
allowVolumeExpansion: True
kind: PersistentVolume
apiVersion: v1
metadata:
name: mysql-01
labels:
type: local
spec:
storageClassName: localstorage
capacity:
storage: 10Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/mnt/mysql01"
---
kind: PersistentVolume
apiVersion: v1
metadata:
name: mysql-02
labels:
type: local
spec:
storageClassName: localstorage
capacity:
storage: 10Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/mnt/mysql02"
Storage class is default one
get sc
NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE
localstorage (default) kubernetes.io/no-provisioner Delete Immediate true 35m
PVC also shows no events:
Name: data-mysql-0
Namespace: default
StorageClass: localstorage
Status: Pending
Volume: mysql-storage
Labels: app=mysql
Annotations: <none>
Finalizers: [kubernetes.io/pvc-protection]
Capacity: 0
Access Modes:
VolumeMode: Filesystem
Mounted By: mysql-0
Events: <none>
Name: mysql-01
Labels: type=local
Annotations: kubectl.kubernetes.io/last-applied-configuration:
{"apiVersion":"v1","kind":"PersistentVolume","metadata":{"annotations":{},"labels":{"type":"local"},"name":"mysql-01"},"spec":{"accessMode...
Finalizers: [kubernetes.io/pv-protection]
StorageClass: localstorage
Status: Available
Claim:
Reclaim Policy: Retain
Access Modes: RWO
VolumeMode: Filesystem
Capacity: 10Gi
Node Affinity: <none>
Message:
Source:
Type: HostPath (bare host directory volume)
Path: /mnt/mysql01
HostPathType:
Events: <none>
Name: mysql-02
Labels: type=local
Annotations: kubectl.kubernetes.io/last-applied-configuration:
{"apiVersion":"v1","kind":"PersistentVolume","metadata":{"annotations":{},"labels":{"type":"local"},"name":"mysql-02"},"spec":{"accessMode...
Finalizers: [kubernetes.io/pv-protection]
StorageClass: localstorage
Status: Available
Claim:
Reclaim Policy: Retain
Access Modes: RWO
VolumeMode: Filesystem
Capacity: 10Gi
Node Affinity: <none>
Message:
Source:
Type: HostPath (bare host directory volume)
Path: /mnt/mysql02
HostPathType:
Events: <none>
Pod is in pending state:
> Events:
> Type Reason Age From Message
> ---- ------ ---- ---- -------
> Warning FailedScheduling 27s (x2 over 27s) default-scheduler error while running >"VolumeBinding" filter plugin for pod "mysql-0": pod has unbound immediate PersistentVolumeClaims
Can someone point out what else should be done here, thanks
PersistentVolumeClaims
will remain unbound indefinitely if a matching PersistentVolume
does not exist. The PersistentVolume
is matched with accessModes
and capacity
. In this case capacity
the PV is 10Gi
whereas PVC has capacity
of 3Gi
.
The capacity
in the PV needs to same as in the claim i.e 3Gi
to fix the unbound immediate PersistentVolumeClaims
issue.