Kubernetes與MongoDb

Question

我遵循https://www.mongodb.com/blog/post/running-mongodb-as-a-microservice-with-docker-and-kubernetes並嘗試在Google Cloud帳戶上運行帶有LoadBalancer服務和複製控制器的單個MongoDB實例。

以下是YAML文件：

--- 
apiVersion: v1 
kind: Service 
metadata: 
    name: mongo-svc-a 
    labels: 
    name: mongo-svc-a 
spec: 
    type: LoadBalancer 
    ports: 
    - port: 27017 
    targetPort: 27017 
    protocol: TCP 
    name: mongo-svc-a 
    selector: 
    name: mongo-node1 
    instance: rod 
--- 
apiVersion: v1 
kind: ReplicationController 
metadata: 
    name: mongo-rc1 
    labels: 
    name: mongo-rc 
spec: 
    replicas: 1 
    selector: 
    name: mongo-node1 
    template: 
    metadata: 
     labels: 
     name: mongo-node1 
     instance: rod 
    spec: 
     containers: 
     - name: mongo-node1 
     image: mongo 
     ports: 
     - containerPort: 27017 
     volumeMounts: 
     - name: mongo-persistent-storage1 
      mountPath: /data/db 
     volumes: 
     - name: mongo-persistent-storage1 
     gcePersistentDisk: 
      pdName: mongodb-disk1-in-cluster1 
      fsType: ext4 

以下是創建的服務，複製控制器和豆莢的細節。一切似乎都很好。

$ kubectl describe service mongo-svc-a 
Name:     mongo-svc-a 
Namespace:    default 
Labels:     name=mongo-svc-a 
Selector:    instance=rod,name=mongo-node1 
Type:     LoadBalancer 
IP:      10.3.241.11 
LoadBalancer Ingress: 104.198.236.2 
Port:     mongo-svc-a  27017/TCP 
NodePort:    mongo-svc-a  31808/TCP 
Endpoints:    10.0.0.3:27017 
Session Affinity:  None 
No events. 


$ kubectl describe rc mongo-rc1 
Name:   mongo-rc1 
Namespace:  default 
Image(s):  mongo 
Selector:  name=mongo-node1 
Labels:   name=mongo-rc 
Replicas:  1 current/1 desired 
Pods Status: 1 Running/0 Waiting/0 Succeeded/0 Failed 
Volumes: 
    mongo-persistent-storage1: 
    Type:  GCEPersistentDisk (a Persistent Disk resource in Google Compute Engine) 
    PDName:  mongodb-disk1-in-cluster1 
    FSType:  ext4 
    Partition: 0 
    ReadOnly: false 
No events. 


$ kubectl describe pod mongo-rc1-h0j8r 
Name:   mongo-rc1-h0j8r 
Namespace:  default 
Node:   gke-cluster1-default-pool-d58b6c05-74fq/10.128.0.6 
Start Time:  Sat, 11 Feb 2017 18:43:00 +0530 
Labels:   instance=rod 
       name=mongo-node1 
Status:   Running 
IP:    10.0.0.3 
Controllers: ReplicationController/mongo-rc1 
Containers: 
    mongo-node1: 
    Container ID:  docker://9f28e482d3806b74f7f595c47e6c7940c2313e95860db13d137ad6eaa88bb341 
    Image:    mongo 
    Image ID:   docker://sha256:ad974e767ec4f06945b1e7ffdfc57bd10e06baf66cdaf5a003e0e6a36924e30b 
    Port:    27017/TCP 
    Requests: 
     cpu:    100m 
    State:    Running 
     Started:   Sat, 11 Feb 2017 18:45:37 +0530 
    Ready:    True 
    Restart Count:  0 
    Volume Mounts: 
     /data/db from mongo-persistent-storage1 (rw) 
     /var/run/secrets/kubernetes.io/serviceaccount from default-token-3wfv3 (ro) 
    Environment Variables:  <none> 
Conditions: 
    Type   Status 
    Initialized True 
    Ready   True 
    PodScheduled True 
Volumes: 
    mongo-persistent-storage1: 
    Type:  GCEPersistentDisk (a Persistent Disk resource in Google Compute Engine) 
    PDName:  mongodb-disk1-in-cluster1 
    FSType:  ext4 
    Partition: 0 
    ReadOnly: false 
    default-token-3wfv3: 
    Type:  Secret (a volume populated by a Secret) 
    SecretName: default-token-3wfv3 
QoS Class:  Burstable 
Tolerations: <none> 
No events. 

但是，當我嘗試遠程連接mongo --hostname <Extenal_IP_of_the_service>，到新創建的monogdb情況下，我無法連接。我相信配置似乎沒問題。任何幫助，將不勝感激。謝謝，

• 帕

Answer 1

嘗試了不同的方法，並把它釘。

跟着下面的教程：https://kubernetes.io/docs/tutorials/stateful-application/run-stateful-application/

裸露無頭服務：

kubectl expose service your_service_name --port=27017 --target-port=27017 --name=mongo-lb-service --type=LoadBalancer