persistent-volumes of k8s kubernetes

gistfile1.txt

http://kubernetes.io/docs/user-guide/persistent-volumes/walkthrough/

http://www.slideshare.net/Docker/persistent-data-storage-for-docker-containers-by-andre-moruga
https://github.com/kubernetes/kubernetes/blob/master/docs/design/persistent-storage.md

http://kubernetes.io/docs/user-guide/persistent-volumes/
HostPath (single node testing only – local storage is not supported in any way and WILL NOT WORK in a multi-node cluster)

Assigning Pods to Nodes
https://kubernetes.io/docs/user-guide/node-selection/

[root@k8s-08 volumes-ci-cd]# pwd
/volumes-ci-cd
[root@k8s-08 volumes-ci-cd]# chmod -R 777 bugzilla/

[root@k8s-09 ~]# kubectl label nodes  k8s-08 pesistent=bugzilla
[root@k8s-09 ~]# kubectl get nodes --show-labels
NAME                   STATUS    AGE       LABELS
k8s-04.huaweilab.com   Ready     61d       beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/hostname=k8s-04.huaweilab.com
k8s-05.huaweilab.com   Ready     61d       beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/hostname=k8s-05.huaweilab.com
k8s-06.huaweilab.com   Ready     61d       beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/hostname=k8s-06.huaweilab.com
k8s-07.huaweilab.com   Ready     61d       beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/hostname=k8s-07.huaweilab.com
k8s-08.huaweilab.com   Ready     61d       beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/hostname=k8s-08.huaweilab.com,pesistent=bugzilla
k8s-09.huaweilab.com   Ready     61d       beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubeadm.alpha.kubernetes.io/role=master,kubernetes.io/hostname=k8s-09.huaweilab.com
[root@k8s-09 ~]#

then prepare yaml file

[root@k8s-09 ~]# cat bugzilla-host-volume-on-08.yaml
apiVersion: v1
kind: Pod
metadata:
  name: bugzilla.withpv
  labels:
    name: bugzilla.withpv
spec:
  containers:
  - name: bugzilla
    image: dklawren/docker-bugzilla
    ports:
    - containerPort: 80
    - containerPort: 22
    - containerPort: 5900
    securityContext:
      privileged: true
    volumeMounts:
    - mountPath: /home/bugzilla
      name: pv-bugzilla
    - mountPath: /var/lib/mysql
      name: pv-mysql
  nodeSelector:
    pesistent: bugzilla
  volumes:
  - name: pv-bugzilla
    hostPath:
      # directory location on host
      path: /volumes-ci-cd/bugzilla/bugzilla
  - name: pv-mysql
    hostPath:
      path: /volumes-ci-cd/bugzilla/mysql

Test
1 create a test.txt in container and check the content from node
2 delete pod and re deploy it, it is still on the specified node and the status is still there
3 compare with the one without persistent storage pod:
there is not data in the mounted path
http://10.145.101.91:30146/ work
http://10.145.101.91:30146/bugzilla/ does not work
[root@k8s-09 ~]# kubectl expose pod bugzilla.withpv --type=NodePort --name bugzilla-withpv
service "bugzilla-withpv" exposed