Kubernetes PersistentVolume and PersistentVolumeClaim could be causing issues for my pod which crashes while copying logs - selenium

Question

I have a PersistentVolume that I specified as the following:
apiVersion: v1
kind: PersistentVolume
metadata:
name: mypv-shared
spec:
accessModes:
- ReadWriteMany
capacity:
storage: 5Gi
hostPath:
path: /data/mypv-shared/
Then I created a PersistentVolumeClaim with the following specifications:
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: mypv-shared-claim
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 5Gi
But when I create the PVC, running kubectl get pv shows that it is bound to a randomly generated PV
NAME CAPACITY ACCESSMODES RECLAIMPOLICY STATUS CLAIM STORAGECLASS REASON AGE
pvc-38c77920-a223-11e7-89cc-08002719b642 5Gi RWX Delete Bound default/mypv-shared standard 16m
I believe this is causing issues for my pods when running tests because I am not sure if the pod is correctly mounting the specified directory. My pods crash at the end of the test when trying to copy over the test logs at the end of the run.
Is the cause really the persistentVolume/Claim or should I be looking into something else? Thanks!

Answer 1

Creating the PVC dynamically provisioned a PV instead of using the one you created manually with the hostpath. On the PVC simply set .spec.storageClassName to and an empty string ("")
From the documentation:
A PVC with its storageClassName set equal to "" is always interpreted to be requesting a PV with no class, so it can only be bound to PVs with no class (no annotation or one set equal to ""). A PVC with no storageClassName is not quite the same ...
So create something like this (I've also added labels and selectors to make sure that the intended PV is paired up the PVC; you might not need that constraint):
apiVersion: v1
kind: PersistentVolume
metadata:
name: mypv-shared
labels:
name: mypv-shared
spec:
accessModes:
- ReadWriteMany
capacity:
storage: 5Gi
hostPath:
path: /data/mypv-shared/
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: mypv-shared-claim
spec:
storageClassName: ""
selector:
matchLabels:
name: mypv-shared
accessModes:
- ReadWriteMany
resources:
requests:
storage: 5Gi