Jenkins installation on Kubernetes issue with volume conflict-CodePudding

I'm following this Link to setup Jenkins on Kubernetes cluster.

The environment information is mentioned below,

Environment:-

On-Premise Physical Server

# kubectl get nodes
NAME          STATUS   ROLES      AGE     VERSION
master-server Ready    master     2d23h   v1.19.16
node-server1  Ready    worker1    2d23h   v1.19.16
node-server2  Ready    worker2    2d23h   v1.19.16
node-server3  Ready    worker3    2d23h   v1.19.16

I have below yaml files.

deploy-jenkins.yaml  
sa-jenkins.yaml  
service-jenkins.yaml  
volume-jenkins.yaml

PersistentVolume i want to use my master server local path, So in the volume-jenkins.yaml file I have updated path and values as below.

  local:
    path: /home/linux-user/kubernetes/jenkins
  nodeAffinity:
    required:
      nodeSelectorTerms:
      - matchExpressions:
        - key: kubernetes.io/hostname
          operator: In
          values:
          - master-server

When i apply the yaml files, My jenkins pod remain in pending status always.

Jenkins Pod status:-

# kubectl get pods -n jenkins
NAME                       READY   STATUS    RESTARTS   AGE
jenkins-69b8564b9f-gm48n   0/1     Pending   0          102m

Jenkins Pod describe Status:-

# kubectl describe pod jenkins-69b8564b9f-gm48n -n jenkins

Events:
  Type     Reason            Age                    From               Message
  ----     ------            ----                   ----               -------
  Warning  FailedScheduling  3m45s (x68 over 104m)  default-scheduler  0/4 nodes are available: 1 node(s) had taint {node-role.kubernetes.io/master: }, that the pod didn't tolerate, 3 node(s) had volume node affinity conflict.

PV describe details:-

# kubectl describe pv jenkins-pv -n jenkins

Name:              jenkins-pv
Labels:            type=local
Annotations:       <none>
Finalizers:        [kubernetes.io/pv-protection]
StorageClass:      local-storage
Status:            Bound
Claim:             jenkins/jenkins-pvc
Reclaim Policy:    Retain
Access Modes:      RWO
VolumeMode:        Filesystem
Capacity:          10Gi
Node Affinity:
  Required Terms:
    Term 0:        kubernetes.io/hostname in [master-server]
Message:
Source:
    Type:  LocalVolume (a persistent volume backed by local storage on a node)
    Path:  /home/linux-user/kubernetes/jenkins
Events:    <none>

What is wrong with my yaml files? and let me know the way to solve the node conflict issue. Thanks in advance.

CodePudding user response：

...i want to use my master server local path

Add nodeSelector and tolerations to your deployment spec:

apiVersion: apps/v1
kind: Deployment
...
spec:
  ...
  template:
    ...
    spec:
      nodeSelector:
        node-role.kubernetes.io/master: ""
      tolerations:
      - key: node-role.kubernetes.io/master
        operator: Exists
      containers:
      - name: jenkins
        ...