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Installing OpenEBS

Installing OpenEBS

  1. helm でインストールする

  2. StorageClassを確認する 

    $ kubectl get sc
NAME                       PROVISIONER           RECLAIMPOLICY   VOLUMEBINDINGMODE      ALLOWVOLUMEEXPANSION   AGE
openebs-device             openebs.io/local      Delete          WaitForFirstConsumer   false                  28m
openebs-hostpath           openebs.io/local      Delete          WaitForFirstConsumer   false                  28m
openebs-jiva-csi-default   jiva.csi.openebs.io   Delete          Immediate              true                   28mS

  3. OpenEBSの各Pod起動を確認する 

    $ kubectl get pods -n openebs
NAME                                            READY   STATUS    RESTARTS      AGE
openebs-cstor-admission-server-b74f5487-djhxj   1/1     Running   0             22m
openebs-cstor-csi-controller-0                  6/6     Running   0             21m
openebs-cstor-csi-node-54prc                    2/2     Running   0             28m
openebs-cstor-csi-node-g844x                    2/2     Running   0             22m
openebs-cstor-csi-node-vrm2w                    2/2     Running   0             95s
openebs-cstor-cspc-operator-84464fb479-vdh67    1/1     Running   0             22m
openebs-cstor-cvc-operator-646f6f676b-5t79q     1/1     Running   0             22m
openebs-jiva-csi-controller-0                   5/5     Running   3 (16m ago)   28m
openebs-jiva-csi-node-2hz6w                     3/3     Running   0             110s
openebs-jiva-csi-node-nt6jz                     3/3     Running   0             28m
openebs-jiva-csi-node-zm49x                     3/3     Running   0             22m
openebs-jiva-operator-f994f6868-w7xrl           1/1     Running   0             22m
openebs-localpv-provisioner-55b65f8b55-2mq9z    1/1     Running   3 (16m ago)   28m
openebs-ndm-4smgw                               1/1     Running   0             2m37s
openebs-ndm-6fpg7                               1/1     Running   0             9m7s
openebs-ndm-operator-6c944d87b6-5dq77           1/1     Running   0             22m
openebs-ndm-vm255                               1/1     Running   0             28m

Deploy Jenkins with OpenEBS

参考

手順

  1. download manifests 
    wget https://raw.githubusercontent.com/openebs/openebs/master/k8s/demo/jenkins/jenkins.yml

  2. modify manifests 

    vim jenkins.yml


    $ diff -u <(curl -s https://raw.githubusercontent.com/openebs/openebs/master/k8s/demo/jenkins/jenkins.yml) <(cat ./jenkins.yml)
--- /dev/fd/63  2022-10-01 14:11:35.968241073 +0000
+++ /dev/fd/62  2022-10-01 14:11:35.980240892 +0000
@@ -3,7 +3,7 @@
 metadata:
   name: jenkins-claim
   annotations:
-    volume.beta.kubernetes.io/storage-class: openebs-jiva-default
+    volume.beta.kubernetes.io/storage-class: openebs-jiva-csi-default
 spec:
   accessModes:
     - ReadWriteOnce
    1. apply manifests 
    kubectl apply -f jenkins.yml

  3. リソース確認

    PersistentVolumeClaim 
    $ kubectl describe PersistentVolumeClaim jenkins-claim
Name:          jenkins-claim
Namespace:     default
StorageClass:  openebs-jiva-csi-default
Status:        Bound
Volume:        pvc-e69e2bbb-f945-4ec7-b61a-490a66596441
Labels:        <none>
Annotations:   pv.kubernetes.io/bind-completed: yes
               pv.kubernetes.io/bound-by-controller: yes
                              volume.beta.kubernetes.io/storage-class: openebs-jiva-csi-default
                                             volume.beta.kubernetes.io/storage-provisioner: jiva.csi.openebs.io
                                             Finalizers:    [kubernetes.io/pvc-protection]
                                             Capacity:      5G
                                             Access Modes:  RWO
                                             VolumeMode:    Filesystem
                                             Used By:       jenkins-7f87d6d6d8-htjx9
                                             Events:        <none>

    Service 
    $ kubectl describe service jenkins-svc
Name:                     jenkins-svc
Namespace:                default
Labels:                   <none>
Annotations:              <none>
Selector:                 app=jenkins-app
Type:                     NodePort
IP Family Policy:         SingleStack
IP Families:              IPv4
IP:                       10.32.0.70
IPs:                      10.32.0.70
Port:                     <unset>  80/TCP
TargetPort:               8080/TCP
NodePort:                 <unset>  30792/TCP
Endpoints:                10.200.0.45:8080
Session Affinity:         None
External Traffic Policy:  Cluster
Events:                   <none>

    >Deployment 
    $ kubectl describe deployment jenkins
Name:                   jenkins
Namespace:              default
CreationTimestamp:      Fri, 30 Sep 2022 04:56:42 +0000
Labels:                 <none>
Annotations:            deployment.kubernetes.io/revision: 1
Selector:               app=jenkins-app
Replicas:               1 desired | 1 updated | 1 total | 1 available | 0 unavailable
StrategyType:           RollingUpdate
MinReadySeconds:        0
RollingUpdateStrategy:  25% max unavailable, 25% max surge
Pod Template:
  Labels:  app=jenkins-app
  Containers:
   jenkins:
    Image:        jenkins/jenkins:lts
    Port:         8080/TCP
    Host Port:    0/TCP
    Environment:  <none>
    Mounts:
      /var/jenkins_home from jenkins-home (rw)
  Volumes:
   jenkins-home:
    Type:       PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
    ClaimName:  jenkins-claim
    ReadOnly:   false
Conditions:
  Type           Status  Reason
  ----           ------  ------
  Progressing    True    NewReplicaSetAvailable
  Available      True    MinimumReplicasAvailable
OldReplicaSets:  <none>
NewReplicaSet:   jenkins-7f87d6d6d8 (1/1 replicas created)
Events:          <none>

    Pod 
    $ kubectl describe pods jenkins-7f87d6d6d8-htjx9
Name:         jenkins-7f87d6d6d8-htjx9
Namespace:    default
Priority:     0
Node:         k8s-master/192.168.3.50
Start Time:   Sun, 02 Oct 2022 16:49:07 +0000
Labels:       app=jenkins-app
              pod-template-hash=7f87d6d6d8
Annotations:  <none>
Status:       Running
IP:           10.200.0.45
IPs:
  IP:           10.200.0.45
Controlled By:  ReplicaSet/jenkins-7f87d6d6d8
Containers:
  jenkins:
    Container ID:   containerd://9c039657f1a1dee2b4b480aaff1859c9385b9b9d2d874757ad6e0e6c47278bda
    Image:          jenkins/jenkins:lts
    Image ID:       docker.io/jenkins/jenkins@sha256:5508cb1317aa0ede06cb34767fb1ab3860d1307109ade577d5df871f62170214
    Port:           8080/TCP
    Host Port:      0/TCP
    State:          Running
      Started:      Sun, 02 Oct 2022 16:49:38 +0000
    Ready:          True
    Restart Count:  0
    Environment:    <none>
    Mounts:
      /var/jenkins_home from jenkins-home (rw)
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-gzs4t (ro)
Conditions:
  Type              Status
  Initialized       True
  Ready             True
  ContainersReady   True
  PodScheduled      True
Volumes:
  jenkins-home:
    Type:       PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
    ClaimName:  jenkins-claim
    ReadOnly:   false
  kube-api-access-gzs4t:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   BestEffort
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:                      <none>

  4. Webアクセス確認

    image descrioption
    表示にある通り/var/jenkins_home/secrets/initialAdminPasswordの内容を貼り付ける
    kubectl exec -it jenkins-7f87d6d6d8-wx8nn -- cat /var/jenkins_home/secrets/initialAdminPassword