Questions tagged [persistent-volume-claims]
The persistent-volume-claims tag has no usage guidance.
284
questions
148
votes
12
answers
308k
views
Kubernetes: how to set VolumeMount user group and file permissions
I'm running a Kubernetes cluster on AWS using kops. I've mounted an EBS volume onto a container and it is visible from my application but it's read only because my application does not run as root. ...
- 4,479
146
votes
11
answers
73k
views
What is the difference between persistent volume (PV) and persistent volume claim (PVC) in simple terms?
What is the difference between persistent volume (PV) and persistent volume claim (PVC) in Kubernetes/ Openshift by referring to documentation?
What is the difference between both in simple terms?
- 2,225
115
votes
13
answers
120k
views
Kubernetes: Can't delete PersistentVolumeClaim (pvc)
I created the following persistent volume by calling
kubectl create -f nameOfTheFileContainingTheFollowingContent.yaml
apiVersion: v1
kind: PersistentVolume
metadata:
name: pv-monitoring-static-...
- 6,411
76
votes
5
answers
88k
views
How to identify the storage space left in a persistent volume claim?
I have a Kubernetes cluster on Google Cloud Platform. It has a persistent Volume Claim with a Capacity of 1GB. The persistent volume claim is bound to many deployments.
I would like to identify the ...
- 895
75
votes
13
answers
147k
views
Kubernetes Persistent Volume Claim Indefinitely in Pending State
I created a PersistentVolume sourced from a Google Compute Engine persistent disk that I already formatted and provision with data. Kubernetes says the PersistentVolume is available.
kind: ...
- 1,909
50
votes
5
answers
45k
views
Kubernetes NFS Persistent Volumes - multiple claims on same volume? Claim stuck in pending?
Use case:
I have a NFS directory available and I want to use it to persist data for multiple deployments & pods.
I have created a PersistentVolume:
apiVersion: v1
kind: PersistentVolume
...
- 11.4k
37
votes
2
answers
115k
views
Kubernetes - pod has unbound immediate PersistentVolumeClaims
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:
...
- 1,155
35
votes
3
answers
42k
views
Kubernetes: Is it possible to mount volumes to a container running as a CronJob?
I'm attempting to create a Kubernetes CronJob to run an application every minute.
A prerequisite is that I need to get my application code onto the container that runs within the CronJob. I figure ...
- 761
25
votes
4
answers
59k
views
MountVolume.SetUp failed for volume "nfs" : mount failed: exit status 32
This is 2nd question following 1st question at
PersistentVolumeClaim is not bound: "nfs-pv-provisioning-demo"
I am setting up a kubernetes lab using one node only and learning to setup ...
- 281
24
votes
1
answer
14k
views
Bind different Persistent Volume for each replica in a Kubernetes Deployment
I am using a PVC with ReadWriteOnce access mode, which is used by a logstash Deployment which will run a stateful application and use this PVC.Each pod in the deployment will try to bind to the same ...
- 1,662
21
votes
4
answers
18k
views
Kubernetes: how to do dynamic PersistentVolumeClaim with persistentVolumeReclaimPolicy: Reclaim
I have a dynamic PersistentVolume provisioned using PersistentVolumeClaim.
I would like to keep the PV after the pod is done. So I would like to have what persistentVolumeReclaimPolicy: Retain does.
...
- 45.5k
19
votes
5
answers
51k
views
How can I mount the same persistent volume on multiple pods?
I have a three node GCE cluster and a single-pod GKE deployment with three replicas. I created the PV and PVC like so:
# Create a persistent volume for web content
apiVersion: v1
kind: ...
- 191
17
votes
1
answer
29k
views
Can I rely on volumeClaimTemplates naming convention?
I want to setup a pre-defined PostgreSQL cluster in a bare meta kubernetes 1.7 with local PV enable. I have three work nodes. I create local PV on each node and deploy the stateful set successfully (...
- 199
16
votes
1
answer
26k
views
State of PV/PVC after Pod is Deleted in Kubernetes
I have a Kubernetes cluster with some pods deployed (DB, Frontend, Redis). A part that I can't fully grasp is what happens to the PVC after the pod is deleted.
For example, if I delete POD_A which is ...
- 1,603
14
votes
2
answers
27k
views
Can we connect multiple pods to the same PVC?
I mean is there a one to one or many to one relationship between pod and PVC? Can I connect two or more pods to the same PVC(persistent volume claims) without deleting or disconnecting the earlier ...
- 165
12
votes
3
answers
22k
views
How do I change the storage class of existing persistent volumes?
I have a bunch of standard PVs bound to PVCs in Kubernetes running in Google Kubernetes Engine. I want to change their storage class to SSD. How do I achieve that?
- 663
10
votes
1
answer
7k
views
Shared directory for a kubernetes Deployment between it's replicas
I have a simple deployment with 2 replicas.
I would like that each of the replicas have same storage folder in them (shared application upload folder)
I've been playing with claims and volumes, but ...
- 243
10
votes
4
answers
10k
views
Kubernetes - MountVolume.NewMounter initialization failed for volume "<volume-name>" : path does not exist
I am trying to setup a Local Persistent volume using local storage using WSL. But the pod STATUS stops at Pending.
The kubectl describe pod <pod-name> gives below error.
Warning FailedMount ...
- 113
9
votes
1
answer
13k
views
Add persistent volume in Kubernetes StatefulSet on Minikube
I'm new to Kubernetes and I'm trying to add a PVC in my StatefulSet on Minikube.
PV and PVC are shown here:
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM ...
- 2,551
9
votes
2
answers
12k
views
Kubernetes Permission denied for mounted nfs volume
The following is the k8s definition used:
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: nfs-pv-provisioning-demo
labels:
demo: nfs-pv-provisioning
spec:
accessModes: [ "...
- 1,233
9
votes
1
answer
13k
views
How to reuse an existing persistent volume claims
I have deleted my elasticsearch cluster, but now after I've deployed a new cluster I need to access the old data that was stored on 3 Persistent Volumes PV described bellow:
NAME ...
- 1,139
8
votes
2
answers
9k
views
Can we get Persistent Volume with only PVC (without PV) in k8s?
I just saw a yaml file for Postgres with PersistentVolumeClaim and volumeMounts and volumes with the persistentVolumeClaim in the postgres container. I couldn't find any PersistentVolume defined.
...
- 4,273
8
votes
3
answers
11k
views
delete Kubernetes persistent volume from statefulset after scale down
I scaled my statefulset up to 4, and when scaling down to 1, I saw that I still have 4 persistent volumes with indexes from 0 to 3.
I also saw that the status of all of them is Bound
I guess it is ...
- 1,347
8
votes
3
answers
6k
views
Is it possible to have the same PVC as two volumes in Kubernetes?
My pod declares two different volumes.
I use some definition templating, and depending on the environment in some cases I would like to reuse the same claim for the two volumes.
This results in an ...
- 175
8
votes
1
answer
10k
views
Persistent volume claim not claiming the volume
I have this persistent volume claim
$ kubectl get pvc -ngitlab-managed-apps
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
prometheus-prometheus-server ...
- 909
8
votes
1
answer
15k
views
Resizing PVC in Kubernetes With Kubectl edit
Recently I tried to resize PersistentVolumeClaim with help of Kubectl edit pvc to increase storage from 10 Gi to 70 Gi but it’s giving error:
persistentvolumeclaims "myclaim" was not valid:
*...
- 91
7
votes
4
answers
13k
views
Cannot deploy MySQL pod. --initialize specified but the data directory has files in it
I'm trying to setup a MySQL pod on Digital Ocean with Kubernetes.
I kept getting this error:
Initializing database
2019-03-05T14:32:58.707421Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is ...
- 2,516
7
votes
2
answers
5k
views
Kubernetes ReadWriteOnce Multi-Attach deadlock on deployment reload/restart
Consider the below PersistentVolumeClaim, as well as the Deployment using it.
Being ReadWriteOnce, the PVC can only be mounted by one node at the time. As there shall only be one replica of my ...
- 183
7
votes
1
answer
4k
views
Create PersistentVolumeClaim imperative way?
Why can't we create PV or PVC in imperative way?
Trying using create command, but it doesn't show any of them.
kubectl create --help
Available Commands:
clusterrole Create a ClusterRole.
...
- 562
7
votes
1
answer
15k
views
Kubernetes Multi-Attach error for volume "pvc "Volume is already exclusively attached to one node and can't be attached to another"
Kubernetes version:
V1.22.2
Cloud Provider Vsphere version 6.7
Architecture:
3 Masters
15 Workers
What happened:
One of the pods for some "unknown" reason went down, and when we try to ...
6
votes
2
answers
6k
views
how to bound a Persistent volume claim with a gcePersistentDisk?
I would like to bound PersistentVolumeClaim with a gcePersistentDisk PersistentVolume. Below the steps I did for getting that:
1. Creation of the gcePersistentDisk:
gcloud compute disks create --...
- 3,929
6
votes
1
answer
13k
views
k8s Deployment set readOnly in volumes vs volumeMounts
I want to utilize data from a persistent volume as readOnly inside a container.
What is the difference of setting the readOnly flag under the volumeMounts vs the deployment volumes....
- 400
5
votes
3
answers
6k
views
Kubernetes Delete Persistent Voulmes Created by hostPath
I created a PV and a PVC on docker-desktop and even after removing the pv and pvc the file still remains. When I re-create it, it attaches the same mysql database to new pods. How do you manually ...
- 419
5
votes
1
answer
5k
views
Create Persistent volume using command line (without using any file)
I want to create PV using the kubectl command line, Is it possible in Kubernetes or not. If it is possible then how?
- 91
5
votes
1
answer
8k
views
Multiple pods using same database on kubernetes
I would like to know if it is possible for multiple pods in the same Kubernetes cluster to access a database which is configured using persistent volumes on a Google cloud persistent disk.
Currently ...
- 93
5
votes
2
answers
7k
views
Kubernetes: NFS with StatefulSets
I'm trying to use existing NFS with StateFulSets.
Creation of PresistentVolumeClaim seems automatic using the volumeClaimTemplates.
Problem:
But, since the PresistentVolumeClaim claims a entire ...
- 2,161
4
votes
2
answers
8k
views
Re-use PersistentVolume after re-installing a helm deployment
When I helm delete <deploymentname> a deployment its PVs and PVCs are deleted as well. How can I avoid the actual data in the PVs from being deleted and be able to reclaim those PVs when I helm ...
- 16.5k
4
votes
3
answers
16k
views
Mounting kubernetes volume with User permission
I am using Kubernetes yaml to mount a volume.
I know I can set the mount folder to be for a specific group using this configuration:
securityContext:
fsGroup: 999
but no where I can find a way ...
- 1,347
4
votes
2
answers
7k
views
Is it possible to have PVC's with the same name accross different namespace when using different PV's in Kubernetes?
I have 2 different namespace: prod-01 and prod-02, What I want to do is build a copy of my prod-01 into prod-02 namespace keeping the same names for its pvcs, so that I don't have to maintain 2 sets ...
- 544
4
votes
3
answers
6k
views
Kubernetes - Mounting Persistent Volume as root directory
I'm trying to create a new Kubernetes deployment that will allow me to persist a pod's state when it is restarted or shutdown. Just for some background, the Kubernetes instance is a managed Amazon EKS ...
- 925
4
votes
2
answers
7k
views
HostPath assign persistentVolume to the specific work node in cluster
Using kubeadm to create a cluster, I have a master and work node.
Now I want to share a persistentVolume in the work node, which will be bound with Postgres pod.
Expecting the code will create ...
- 6,462
4
votes
1
answer
1k
views
Creating a PersistentVolume on Okteto Cloud
When I try to create a persistentVolume on Okteto Cloud with the following definition:
kind: PersistentVolume
apiVersion: v1
metadata:
name: postgres-pv
labels:
type: local
app: postgres
...
- 4,306
4
votes
2
answers
2k
views
In which real world scenario would you use ReadWriteOnce over ReadWriteMany for a PVC in Kubernetes?
Just as a quick reminder, said option limits how many nodes can read / write to a volume, not how many pods can access it. You can have a RWO volume accesed by multiple pods as long as they are ...
- 569
4
votes
2
answers
4k
views
Kubernetes AKS Persistent Volume Disk Claims To Multiple Nodes
How can I attach 100GB Persistent Volume Disk to Each Node in the AKS Kubernetes Cluster?
We are using Kubernetes on Azure using AKS.
We have a scenario where we need to attach Persistent Volumes ...
- 211
4
votes
1
answer
5k
views
Kubernetes not claiming persistent volume - "failed due to PersistentVolumeClaim is not bound: "task-pv-claim", which is unexpected."
I'm not sure why the persistent volume is not being claimed, or what steps I could take to further diagnose this?
Should the claim size match the volume size? Should the volume size match the GCP ...
- 31.9k
4
votes
1
answer
3k
views
How to recover pv(Released) data after pvc deletion
I have a kubernetes cluster on the eks of aws. I use aws-ebs as the Provisioner of StorageClass, and the ReclaimPolicy is set to Retain. I install the application with helm. When I delete the ...
- 301
4
votes
2
answers
2k
views
Are Pods forced to run on nodes where their persistent volumes exist?
I'm teaching myself Kubernetes with a 5 Rpi cluster, and I'm a bit confused by the way Kubernetes treats Persistent Volumes with respect to Pod Scheduling.
I have 4 worker nodes using ext4 formatted ...
- 160
4
votes
1
answer
5k
views
How to create an kubernetes NFS volume on Google Container Engine
I am trying to create a kubernetes NFS volume on Google Container Engine (GKE) and get it used by a deployment.
I did this in several steps as it shown in this github repository kubernetes-nfs-volume-...
- 3,929
4
votes
2
answers
2k
views
Can I use existing GCE persistent disk in volumeClaimTemplate of Kubernetes Statefulset
I am using Google Container Engine to run a StatefulSet for MongoDB replica set (3 replica pods).
This works fine with dynamic provisioning of persistent storage - that is new storage is provisioned ...
- 95
3
votes
2
answers
3k
views
PersistentVolume and PersistentVolumeClaim for multiple deployments
I have 3 deployments, a-depl, b-depl, c-depl. Now each of these 3 deployments has a db deployment: a-db-depl, b-db-depl, c-db-depl.
Now I want to persist each of these dbs. Do I need to create a ...
- 555