Launching ProFtpd with Kubernetes: Issue mounting volumes - docker

Question

I would like to run a lcoal FTP server ProFtpd with minikube with docker image : vipconsult/proftpd
Here is my deployment file:
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
annotations:
reloader.stakater.com/auto: "true"
name: ftp-local
namespace: influx
labels:
app: ftp-local
component: core
spec:
replicas: 1
template:
metadata:
labels:
app: ftp-local
component: core
spec:
initContainers:
containers:
- image: vipconsult/proftpd
name: ftp-local
imagePullPolicy: IfNotPresent
# env:
resources:
# keep request = limit to keep this container in guaranteed class
limits:
cpu: 100m
memory: 100Mi
requests:
cpu: 100m
memory: 100Mi
env:
- name: USERNAME
value: test
- name: PASSWORD
value: test
volumeMounts:
- name: ftp-persistent-storage
mountPath: /var/lib/ftp
volumes:
- name: ftp-persistent-storage
persistentVolumeClaim:
claimName: ftp-storage
and volume file:
apiVersion: v1
kind: PersistentVolume
metadata:
name: ftp-storage
namespace: influx
spec:
capacity:
storage: 1Gi
accessModes:
- ReadWriteOnce
claimRef:
namespace: influx
name: ftp-storage
hostPath:
path: /data/ftp/storage
---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: ftp-storage
namespace: influx
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
When I deploy it, I have:
➜ proFTP git:(master) ✗ kubectl logs -n influx ftp-local-58d5d774d-zdztf
chown: cannot access '/etc/proftpd/ftpd.passwd': No such file or directory
Documentation states:
to make the users persistent share the passwords file with the host or a data -v /home/docker/proftpd/ftpd.passwd:/etc/proftpd/ftpd.passwd
so, I tried to mount this file:
deployment ( just showing volume section )
volumeMounts:
- name: ftp-persistent-storage
mountPath: /var/lib/ftp
- name: ftp-persistent-users
mountPath: /etc/proftpd/ftpd.passwd
subPath: ftpd.passwd
volumes:
- name: ftp-persistent-storage
persistentVolumeClaim:
claimName: ftp-storage
- name: ftp-persistent-users
persistentVolumeClaim:
claimName: ftp-storage-users
and volumes:
apiVersion: v1
kind: PersistentVolume
metadata:
name: ftp-storage
namespace: influx
spec:
capacity:
storage: 1Gi
accessModes:
- ReadWriteOnce
claimRef:
namespace: influx
name: ftp-storage
hostPath:
path: /data/ftp/storage
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: ftp-storage-user
namespace: influx
spec:
capacity:
storage: 1Gi
accessModes:
- ReadWriteOnce
claimRef:
namespace: influx
name: ftp-storage-user
hostPath:
path: /data/ftp/config
---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: ftp-storage
namespace: influx
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: ftp-storage-user
namespace: influx
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
First I am a bit frustrated to use a 1GB volume for a single file, and then I get:
➜ proFTP git:(master) ✗ kubectl logs -n influx ftp-local-67cfd77497-7rt5m
2019-10-03 07:35:23,853 ftp-local-67cfd77497-7rt5m proftpd[1]: mod_auth_file/1.0: unable to use AuthUserFile '/etc/proftpd/ftpd.passwd': Is a directory
2019-10-03 07:35:23,853 ftp-local-67cfd77497-7rt5m proftpd[1]: fatal: AuthUserFile: unable to use /etc/proftpd/ftpd.passwd: Is a directory on line 193 of '/etc/proftpd/proftpd.conf'
Here are my volumes:
git:(devops) ✗ kubectl get pv,pvc -n influx
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE
persistentvolume/ftp-storage 1Gi RWO Retain Bound influx/ftp-storage 22s
persistentvolume/ftp-storage-user 1Gi RWO Retain Bound influx/ftp-storage-user 22s
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
persistentvolumeclaim/ftp-storage Bound ftp-storage 1Gi RWO standard 22s
persistentvolumeclaim/ftp-storage-user Bound ftp-storage-user 1Gi RWO standard 22s
Now describing PVs:
➜ git:(devops) ✗ kubectl describe pv -n influx ftp-storage
Name: ftp-storage
Labels: <none>
Annotations: kubectl.kubernetes.io/last-applied-configuration:
{"apiVersion":"v1","kind":"PersistentVolume","metadata":{"annotations":{},"name":"ftp-storage"},"spec":{"accessModes":["ReadWriteOnce"],"c...
Finalizers: [kubernetes.io/pv-protection]
StorageClass:
Status: Bound
Claim: influx/ftp-storage
Reclaim Policy: Retain
Access Modes: RWO
VolumeMode: Filesystem
Capacity: 1Gi
Node Affinity: <none>
Message:
Source:
Type: HostPath (bare host directory volume)
Path: /data/ftp/storage
HostPathType:
Events: <none>
➜ git:(devops) ✗ kubectl describe pv -n influx ftp-storage-user
Name: ftp-storage-user
Labels: <none>
Annotations: kubectl.kubernetes.io/last-applied-configuration:
{"apiVersion":"v1","kind":"PersistentVolume","metadata":{"annotations":{},"name":"ftp-storage-user"},"spec":{"accessModes":["ReadWriteOnce...
Finalizers: [kubernetes.io/pv-protection]
StorageClass:
Status: Bound
Claim: influx/ftp-storage-user
Reclaim Policy: Retain
Access Modes: RWO
VolumeMode: Filesystem
Capacity: 1Gi
Node Affinity: <none>
Message:
Source:
Type: HostPath (bare host directory volume)
Path: /data/ftp/config
HostPathType:
Events: <none>
What am I doing wrong ?