kubernetes實戰(四)：k8s持久化安裝rabbitmq集羣

一、下載文件

https://github.com/dotbalo/k8s/

 

二、建立namespace

kubectl create namespace public-service

　　若是不使用public-service，須要更改全部yaml文件的public-service爲你namespace。

sed -i "s#public-service#YOUR_NAMESPACE#g" *.yaml

 

三、建立持久化pv

　　此處採用的是靜態PV方式，後端使用的是NFS，爲了方便擴展可使用動態PV較好。

[root@nfs rabbitmq-cluster-1]# cat /etc/exports
/k8s/rmq-cluster/rabbitmq-cluster-1/ *(rw,sync,no_subtree_check,no_root_squash)
/k8s/rmq-cluster/rabbitmq-cluster-2/ *(rw,sync,no_subtree_check,no_root_squash)
/k8s/rmq-cluster/rabbitmq-cluster-3/ *(rw,sync,no_subtree_check,no_root_squash)

[root@k8s-master01 rabbitmq-cluster]# pwd
/root/efk/rabbitmq-cluster
[root@k8s-master01 rabbitmq-cluster]# ls
rabbitmq-cluster-ss.yaml  rabbitmq-pv.yaml    rabbitmq-secret.yaml           rabbitmq-service-lb.yaml
rabbitmq-configmap.yaml   rabbitmq-rbac.yaml  rabbitmq-service-cluster.yaml  README.md

　　建立集羣

[root@k8s-master01 rabbitmq-cluster]# kubectl apply -f .

 

四、查看

　　pods、pv、pvc

[root@k8s-master01 rabbitmq-cluster]# kubectl get pods -n public-service
NAME            READY     STATUS    RESTARTS   AGE
rmq-cluster-0   1/1       Running   0          40m
rmq-cluster-1   1/1       Running   0          39m
rmq-cluster-2   1/1       Running   0          39m

[root@k8s-master01 rabbitmq-cluster]# kubectl get pv -n public-service
NAME       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS    CLAIM                                           STORAGECLASS        REASON    AGE
pv-rmq-1   4Gi        RWX            Recycle          Bound     public-service/rabbitmq-storage-rmq-cluster-2   rmq-storage-class             49m
pv-rmq-2   4Gi        RWX            Recycle          Bound     public-service/rabbitmq-storage-rmq-cluster-1   rmq-storage-class             49m
pv-rmq-3   4Gi        RWX            Recycle          Bound     public-service/rabbitmq-storage-rmq-cluster-0   rmq-storage-class             49m
[root@k8s-master01 rabbitmq-cluster]# kubectl get pvc -n public-service
NAME                             STATUS    VOLUME     CAPACITY   ACCESS MODES   STORAGECLASS        AGE
rabbitmq-storage-rmq-cluster-0   Bound     pv-rmq-3   4Gi        RWX            rmq-storage-class   48m
rabbitmq-storage-rmq-cluster-1   Bound     pv-rmq-2   4Gi        RWX            rmq-storage-class   48m
rabbitmq-storage-rmq-cluster-2   Bound     pv-rmq-1   4Gi        RWX            rmq-storage-class   48m
[root@k8s-master01 rabbitmq-cluster]#

　　services，此時使用的NodePort方式，可改成traefik模式

[root@k8s-master01 rabbitmq-cluster]# kubectl get services -n public-service
NAME                   TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                          AGE
rmq-cluster            ClusterIP   None            <none>        5672/TCP                         1h
rmq-cluster-balancer   NodePort    10.107.221.85   <none>        15672:30051/TCP,5672:31892/TCP   1h

 

五、訪問測試

　　經過NodePort的端口

　　帳號密碼：guest

 

六、存在問題

　　上述yaml中有個secret

[root@k8s-master01 rabbitmq-cluster]# cat rabbitmq-secret.yaml 
kind: Secret
apiVersion: v1
metadata:
  name: rmq-cluster-secret
  namespace: public-service
stringData:
  cookie: ERLANG_COOKIE
  password: RABBITMQ_PASS
  url: amqp://RABBITMQ_USER:RABBITMQ_PASS@rmq-cluster-balancer
  username: RABBITMQ_USER

　　定義了username和password，而後在rabbitmq-cluster-ss.yaml引用做爲默認帳號密碼，並且在configmap中也禁用了guest，可是沒有生效。此問題待解決。

 

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