title: Figuring out the pod resposible for a specific service
body: <p>I have a pod and two services. When I ping one of the service with its name from another pod, I am able to get the response. but not for another service.</p>
  
  <pre><code>$ kubectl get pod --show-labels
  NAME                            READY     STATUS    RESTARTS   AGE       LABELS
  cd-jenkins-6dbdb5c8f9-xcf44     1/1       Running   10         16d       app.kubernetes.io/component=jenkins-master,app.kubernetes.io/instance=cd,app.kubernetes.io/managed-by=Helm,app.kubernetes.io/name=jenkins,helm.sh/chart=jenkins-1.9.17,pod-template-hash=6dbdb5c8f9
  </code></pre>
  
  <pre><code>$ kubectl get svc --show-labels
  NAME               TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)        AGE       LABELS
  cd-jenkins         ClusterIP   10.96.192.55   &lt;none&gt;        8080/TCP       16d       app.kubernetes.io/component=jenkins-master,app.kubernetes.io/instance=cd,app.kubernetes.io/managed-by=Helm,app.kubernetes.io/name=jenkins,helm.sh/chart=jenkins-1.9.17
  cd-jenkins-agent   ClusterIP   10.96.98.10    &lt;none&gt;        50000/TCP      16d       app.kubernetes.io/component=jenkins-master,app.kubernetes.io/instance=cd,app.kubernetes.io/managed-by=Helm,app.kubernetes.io/name=jenkins,helm.sh/chart=jenkins-1.9.17
  </code></pre>
  
  <p>If I try pinging <strong>cd-jenkins-agent</strong> service from an another pod, it works fine.</p>
  
  <p>But when I try pining <strong>cd-jenkins</strong> service from the same pod, it is not working.</p>
  
  <p>I am wondering <strong>which pod</strong> is rensible for <strong>cd-jenkins-agent</strong> service?  </p>
  
  <pre><code>$ kubectl exec -it nginx-86c57db685-pnkxx -- sh
  # host cd-jenkins
  cd-jenkins.default.svc.cluster.local has address 10.96.192.55
  
  # host cd-jenkins-agent
  cd-jenkins-agent.default.svc.cluster.local has address 10.96.98.10
  
  # ping -c 2 cd-jenkins
  PING cd-jenkins.default.svc.cluster.local (10.96.192.55) 56(84) bytes of data.
  ^C
  --- cd-jenkins.default.svc.cluster.local ping statistics ---
  2 packets transmitted, 0 received, 100% packet loss, time 6ms
  
  # ping -c 2 cd-jenkins-agent
  PING cd-jenkins-agent.default.svc.cluster.local (10.96.98.10) 56(84) bytes of data.
  64 bytes from cd-jenkins-agent.default.svc.cluster.local (10.96.98.10): icmp_seq=1 ttl=61 time=388 ms
  64 bytes from cd-jenkins-agent.default.svc.cluster.local (10.96.98.10): icmp_seq=2 ttl=61 time=470 ms
  --- cd-jenkins-agent.default.svc.cluster.local ping statistics ---
  2 packets transmitted, 2 received, 0% packet loss, time 2ms
  rtt min/avg/max/mdev = 387.755/428.769/469.783/41.014 ms
  </code></pre>
  
  <p><strong>UPDATE</strong></p>
  
  <p>Adding more information</p>
  
  <pre><code>$ kubectl describe service cd-jenkins-agent                    
  Name:              cd-jenkins-agent
  Namespace:         default
  Labels:            app.kubernetes.io/component=jenkins-master
                     app.kubernetes.io/instance=cd
                     app.kubernetes.io/managed-by=Helm
                     app.kubernetes.io/name=jenkins
                     helm.sh/chart=jenkins-1.9.17
  Annotations:       &lt;none&gt;
  Selector:          app.kubernetes.io/component=jenkins-master,app.kubernetes.io/instance=cd
  Type:              ClusterIP
  IP:                10.96.98.10
  Port:              slavelistener  50000/TCP
  TargetPort:        50000/TCP
  Endpoints:         
  Session Affinity:  None
  Events:            &lt;none&gt;
  
  $ kubectl describe pod cd-jenkins-6dbdb5c8f9-xcf44 |grep -i ip:                            
  IP:                 172.17.0.5
  
  $ kubectl describe service cd-jenkins                          
  Name:              cd-jenkins
  Namespace:         default
  Labels:            app.kubernetes.io/component=jenkins-master
                     app.kubernetes.io/instance=cd
                     app.kubernetes.io/managed-by=Helm
                     app.kubernetes.io/name=jenkins
                     helm.sh/chart=jenkins-1.9.17
  Annotations:       &lt;none&gt;
  Selector:          app.kubernetes.io/component=jenkins-master,app.kubernetes.io/instance=cd
  Type:              ClusterIP
  IP:                10.96.192.55
  Port:              http  8080/TCP
  TargetPort:        8080/TCP
  Endpoints:         172.17.0.5:8080
  Session Affinity:  None
  Events:            &lt;none&gt;
  </code></pre>
  
  <p>Manifest content for all the pods:</p>
  
  <pre><code>$ kubectl get pod -oyaml
  
  apiVersion: v1
  items:
  - apiVersion: v1
    kind: Pod
    metadata:
      annotations:
        checksum/config: df1933f788ea761f62ce06ba7b344e4245c42dc7d187cb3055cbfc10921ace86
      creationTimestamp: 2020-03-07T14:16:09Z
      generateName: cd-jenkins-6dbdb5c8f9-
      labels:
        app.kubernetes.io/component: jenkins-master
        app.kubernetes.io/instance: cd
        app.kubernetes.io/managed-by: Helm
        app.kubernetes.io/name: jenkins
        helm.sh/chart: jenkins-1.9.17
        pod-template-hash: 6dbdb5c8f9
      name: cd-jenkins-6dbdb5c8f9-xcf44
      namespace: default
      ownerReferences:
      - apiVersion: apps/v1
        blockOwnerDeletion: true
        controller: true
        kind: ReplicaSet
        name: cd-jenkins-6dbdb5c8f9
        uid: c275c986-d0f2-4985-b367-b628149bd89e
      resourceVersion: "113287"
      selfLink: /api/v1/namespaces/default/pods/cd-jenkins-6dbdb5c8f9-xcf44
      uid: c402430a-7ded-4aff-b316-e1ca08bac22a
    spec:
      containers:
      - args:
        - --argumentsRealm.passwd.$(ADMIN_USER)=$(ADMIN_PASSWORD)
        - --argumentsRealm.roles.$(ADMIN_USER)=admin
        - --httpPort=8080
        env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              apiVersion: v1
              fieldPath: metadata.name
        - name: JAVA_OPTS
        - name: JENKINS_OPTS
        - name: JENKINS_SLAVE_AGENT_PORT
          value: "50000"
        - name: ADMIN_PASSWORD
          valueFrom:
            secretKeyRef:
              key: jenkins-admin-password
              name: cd-jenkins
        - name: ADMIN_USER
          valueFrom:
            secretKeyRef:
              key: jenkins-admin-user
              name: cd-jenkins
        image: jenkins/jenkins:lts
        imagePullPolicy: Always
        livenessProbe:
          failureThreshold: 5
          httpGet:
            path: /login
            port: http
            scheme: HTTP
          initialDelaySeconds: 90
          periodSeconds: 10
          successThreshold: 1
          timeoutSeconds: 5
        name: jenkins
        ports:
        - containerPort: 8080
          name: http
          protocol: TCP
        - containerPort: 50000
          name: slavelistener
          protocol: TCP
        readinessProbe:
          failureThreshold: 3
          httpGet:
            path: /login
            port: http
            scheme: HTTP
          initialDelaySeconds: 60
          periodSeconds: 10
          successThreshold: 1
          timeoutSeconds: 5
        resources:
          limits:
            cpu: "2"
            memory: 4Gi
          requests:
            cpu: 50m
            memory: 256Mi
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /tmp
          name: tmp
        - mountPath: /var/jenkins_home
          name: jenkins-home
        - mountPath: /var/jenkins_config
          name: jenkins-config
          readOnly: true
        - mountPath: /usr/share/jenkins/ref/secrets/
          name: secrets-dir
        - mountPath: /usr/share/jenkins/ref/plugins/
          name: plugin-dir
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: cd-jenkins-token-w6xtk
          readOnly: true
      dnsPolicy: ClusterFirst
      enableServiceLinks: true
      initContainers:
      - command:
        - sh
        - /var/jenkins_config/apply_config.sh
        env:
        - name: ADMIN_PASSWORD
          valueFrom:
            secretKeyRef:
              key: jenkins-admin-password
              name: cd-jenkins
        - name: ADMIN_USER
          valueFrom:
            secretKeyRef:
              key: jenkins-admin-user
              name: cd-jenkins
        image: jenkins/jenkins:lts
        imagePullPolicy: Always
        name: copy-default-config
        resources:
          limits:
            cpu: "2"
            memory: 4Gi
          requests:
            cpu: 50m
            memory: 256Mi
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /tmp
          name: tmp
        - mountPath: /var/jenkins_home
          name: jenkins-home
        - mountPath: /var/jenkins_config
          name: jenkins-config
        - mountPath: /usr/share/jenkins/ref/secrets/
          name: secrets-dir
        - mountPath: /usr/share/jenkins/ref/plugins
          name: plugins
        - mountPath: /var/jenkins_plugins
          name: plugin-dir
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: cd-jenkins-token-w6xtk
          readOnly: true
      nodeName: minikube
      priority: 0
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext:
        runAsUser: 0
      serviceAccount: cd-jenkins
      serviceAccountName: cd-jenkins
      terminationGracePeriodSeconds: 30
      tolerations:
      - effect: NoExecute
        key: node.kubernetes.io/not-ready
        operator: Exists
        tolerationSeconds: 300
      - effect: NoExecute
        key: node.kubernetes.io/unreachable
        operator: Exists
        tolerationSeconds: 300
      volumes:
      - emptyDir: {}
        name: plugins
      - emptyDir: {}
        name: tmp
      - configMap:
          defaultMode: 420
          name: cd-jenkins
        name: jenkins-config
      - emptyDir: {}
        name: secrets-dir
      - emptyDir: {}
        name: plugin-dir
      - name: jenkins-home
        persistentVolumeClaim:
          claimName: cd-jenkins
      - name: cd-jenkins-token-w6xtk
        secret:
          defaultMode: 420
          secretName: cd-jenkins-token-w6xtk
    status:
      conditions:
      - lastProbeTime: null
        lastTransitionTime: 2020-03-24T14:01:22Z
        status: "True"
        type: Initialized
      - lastProbeTime: null
        lastTransitionTime: 2020-03-24T14:02:41Z
        status: "True"
        type: Ready
      - lastProbeTime: null
        lastTransitionTime: 2020-03-24T14:02:41Z
        status: "True"
        type: ContainersReady
      - lastProbeTime: null
        lastTransitionTime: 2020-03-07T14:16:09Z
        status: "True"
        type: PodScheduled
      containerStatuses:
      - containerID: docker://b68b1dc92b9d3ddbc2276b95a14029d6b14d6e19c616b833b8878f2ff43f54f1
        image: jenkins/jenkins:lts
        imageID: docker-pullable://jenkins/jenkins@sha256:7ea1d29c621a10d1e231013f62e32f0eb726dde15a4c219e5010564a6766daa8
        lastState:
          terminated:
            containerID: docker://5b422b334d50502002959b5ab7478eb7aa8d69767fdcca9b39504314e120a347
            exitCode: 143
            finishedAt: 2020-03-24T13:57:24Z
            reason: Error
            startedAt: 2020-03-24T11:10:17Z
        name: jenkins
        ready: true
        restartCount: 11
        started: true
        state:
          running:
            startedAt: 2020-03-24T14:01:26Z
      hostIP: 192.168.99.107
      initContainerStatuses:
      - containerID: docker://63702bb2f84abafffcc3daea86fab5aa8df8989407a03878ff47e235b33a4369
        image: jenkins/jenkins:lts
        imageID: docker-pullable://jenkins/jenkins@sha256:7ea1d29c621a10d1e231013f62e32f0eb726dde15a4c219e5010564a6766daa8
        lastState: {}
        name: copy-default-config
        ready: true
        restartCount: 7
        state:
          terminated:
            containerID: docker://63702bb2f84abafffcc3daea86fab5aa8df8989407a03878ff47e235b33a4369
            exitCode: 0
            finishedAt: 2020-03-24T14:01:21Z
            reason: Completed
            startedAt: 2020-03-24T14:01:11Z
      phase: Running
      podIP: 172.17.0.5
      podIPs:
      - ip: 172.17.0.5
      qosClass: Burstable
      startTime: 2020-03-07T14:16:09Z
  
  - apiVersion: v1
    kind: Pod
    metadata:
      creationTimestamp: 2020-03-07T14:52:54Z
      labels:
        jenkins/cd-jenkins-slave: "true"
        jenkins/label: cd-jenkins-slavex
      name: default-896lw
      namespace: default
      resourceVersion: "18328"
      selfLink: /api/v1/namespaces/default/pods/default-896lw
      uid: 47d45a2a-1cc6-4b13-8a1b-b5ec8fb10efd
    spec:
      containers:
      - args:
        - e169f2448e514120084b5e486bcf780a6e7c1bf0eee013c57704b10ebbb1270e
        - default-896lw
        env:
        - name: JENKINS_SECRET
          value: e169f2448e514120084b5e486bcf780a6e7c1bf0eee013c57704b10ebbb1270e
        - name: JENKINS_TUNNEL
          value: cd-jenkins-agent:50000
        - name: JENKINS_AGENT_NAME
          value: default-896lw
        - name: JENKINS_NAME
          value: default-896lw
        - name: JENKINS_AGENT_WORKDIR
          value: /home/jenkins
        - name: JENKINS_URL
          value: http://cd-jenkins.default.svc.cluster.local:8080
        image: jenkins/jnlp-slave:3.27-1
        imagePullPolicy: IfNotPresent
        name: jnlp
        resources:
          limits:
            cpu: 512m
            memory: 512Mi
          requests:
            cpu: 512m
            memory: 512Mi
        securityContext:
          privileged: false
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /home/jenkins
          name: workspace-volume
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: default-token-pbs7v
          readOnly: true
        workingDir: /home/jenkins
      dnsPolicy: ClusterFirst
      enableServiceLinks: true
      nodeName: minikube
      nodeSelector:
        beta.kubernetes.io/os: linux
      priority: 0
      restartPolicy: Never
      schedulerName: default-scheduler
      securityContext: {}
      serviceAccount: default
      serviceAccountName: default
      terminationGracePeriodSeconds: 30
      tolerations:
      - effect: NoExecute
        key: node.kubernetes.io/not-ready
        operator: Exists
        tolerationSeconds: 300
      - effect: NoExecute
        key: node.kubernetes.io/unreachable
        operator: Exists
        tolerationSeconds: 300
      volumes:
      - emptyDir: {}
        name: workspace-volume
      - name: default-token-pbs7v
        secret:
          defaultMode: 420
          secretName: default-token-pbs7v
    status:
      conditions:
      - lastProbeTime: null
        lastTransitionTime: 2020-03-07T14:52:54Z
        status: "True"
        type: Initialized
      - lastProbeTime: null
        lastTransitionTime: 2020-03-07T14:56:35Z
        message: 'containers with unready status: [jnlp]'
        reason: ContainersNotReady
        status: "False"
        type: Ready
      - lastProbeTime: null
        lastTransitionTime: 2020-03-07T14:56:35Z
        message: 'containers with unready status: [jnlp]'
        reason: ContainersNotReady
        status: "False"
        type: ContainersReady
      - lastProbeTime: null
        lastTransitionTime: 2020-03-07T14:52:54Z
        status: "True"
        type: PodScheduled
      containerStatuses:
      - containerID: docker://675283a8493b685d7632276fbe7b5bec8957bc665d05f6bdcca0e647146a3ffd
        image: jenkins/jnlp-slave:3.27-1
        imageID: docker-pullable://jenkins/jnlp-slave@sha256:a5f42dab13d74c079a653408e45cda3ca2bc3483200bbaa44b88fae486ad7e05
        lastState: {}
        name: jnlp
        ready: false
        restartCount: 0
        started: false
        state:
          terminated:
            containerID: docker://675283a8493b685d7632276fbe7b5bec8957bc665d05f6bdcca0e647146a3ffd
            exitCode: 143
            finishedAt: 2020-03-07T14:53:38Z
            reason: Error
            startedAt: 2020-03-07T14:52:55Z
      hostIP: 192.168.99.107
      phase: Failed
      qosClass: Guaranteed
      startTime: 2020-03-07T14:52:54Z
  - apiVersion: v1
    kind: Pod
    metadata:
      creationTimestamp: 2020-03-24T11:12:58Z
      generateName: nginx-86c57db685-
      labels:
        app: nginx
        pod-template-hash: 86c57db685
      name: nginx-86c57db685-pnkxx
      namespace: default
      ownerReferences:
      - apiVersion: apps/v1
        blockOwnerDeletion: true
        controller: true
        kind: ReplicaSet
        name: nginx-86c57db685
        uid: e1dfdf35-06a8-4277-948b-9c8538a44cd5
      resourceVersion: "113057"
      selfLink: /api/v1/namespaces/default/pods/nginx-86c57db685-pnkxx
      uid: e1e05570-4aba-4c74-8865-6fd2a6c19bff
    spec:
      containers:
      - image: nginx
        imagePullPolicy: Always
        name: nginx
        resources: {}
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: default-token-pbs7v
          readOnly: true
      dnsPolicy: ClusterFirst
      enableServiceLinks: true
      nodeName: minikube
      priority: 0
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      serviceAccount: default
      serviceAccountName: default
      terminationGracePeriodSeconds: 30
      tolerations:
      - effect: NoExecute
        key: node.kubernetes.io/not-ready
        operator: Exists
        tolerationSeconds: 300
      - effect: NoExecute
        key: node.kubernetes.io/unreachable
        operator: Exists
        tolerationSeconds: 300
      volumes:
      - name: default-token-pbs7v
        secret:
          defaultMode: 420
          secretName: default-token-pbs7v
    status:
      conditions:
      - lastProbeTime: null
        lastTransitionTime: 2020-03-24T11:12:58Z
        status: "True"
        type: Initialized
      - lastProbeTime: null
        lastTransitionTime: 2020-03-24T14:01:16Z
        status: "True"
        type: Ready
      - lastProbeTime: null
        lastTransitionTime: 2020-03-24T14:01:16Z
        status: "True"
        type: ContainersReady
      - lastProbeTime: null
        lastTransitionTime: 2020-03-24T11:12:58Z
        status: "True"
        type: PodScheduled
      containerStatuses:
      - containerID: docker://a4e00ee2a882cf4e0f8521f97bdb9e9e46b9eee674a83e8b4cd2190b01ecaff1
        image: nginx:latest
        imageID: docker-pullable://nginx@sha256:2539d4344dd18e1df02be842ffc435f8e1f699cfc55516e2cf2cb16b7a9aea0b
        lastState:
          terminated:
            containerID: docker://d53426252c397a50e33cea7c6d9e70ec1967ac3e230e5f790eade209259cf46f
            exitCode: 0
            finishedAt: 2020-03-24T13:57:22Z
            reason: Completed
            startedAt: 2020-03-24T11:13:06Z
        name: nginx
        ready: true
        restartCount: 1
        started: true
        state:
          running:
            startedAt: 2020-03-24T14:01:16Z
      hostIP: 192.168.99.107
      phase: Running
      podIP: 172.17.0.9
      podIPs:
      - ip: 172.17.0.9
      qosClass: BestEffort
      startTime: 2020-03-24T11:12:58Z
  kind: List
  metadata:
    resourceVersion: ""
    selfLink: ""
  </code></pre>
  
  <p>Manifest for all the services:</p>
  
  <pre><code>$ kubectl get svc -oyaml
  apiVersion: v1
  items:
  - apiVersion: v1
    kind: Service
    metadata:
      creationTimestamp: 2020-03-07T14:16:09Z
      labels:
        app.kubernetes.io/component: jenkins-master
        app.kubernetes.io/instance: cd
        app.kubernetes.io/managed-by: Helm
        app.kubernetes.io/name: jenkins
        helm.sh/chart: jenkins-1.9.17
      name: cd-jenkins
      namespace: default
      resourceVersion: "13047"
      selfLink: /api/v1/namespaces/default/services/cd-jenkins
      uid: aca40b6c-33d0-439d-8398-bde7739ed2f6
    spec:
      clusterIP: 10.96.192.55
      ports:
      - name: http
        port: 8080
        protocol: TCP
        targetPort: 8080
      selector:
        app.kubernetes.io/component: jenkins-master
        app.kubernetes.io/instance: cd
      sessionAffinity: None
      type: ClusterIP
    status:
      loadBalancer: {}
  - apiVersion: v1
    kind: Service
    metadata:
      creationTimestamp: 2020-03-07T14:16:09Z
      labels:
        app.kubernetes.io/component: jenkins-master
        app.kubernetes.io/instance: cd
        app.kubernetes.io/managed-by: Helm
        app.kubernetes.io/name: jenkins
        helm.sh/chart: jenkins-1.9.17
      name: cd-jenkins-agent
      namespace: default
      resourceVersion: "13044"
      selfLink: /api/v1/namespaces/default/services/cd-jenkins-agent
      uid: 4d8cdb2a-7db8-4e61-8d63-474ad2983ed7
    spec:
      clusterIP: 10.96.98.10
      ports:
      - name: slavelistener
        port: 50000
        protocol: TCP
        targetPort: 50000
      selector:
        app.kubernetes.io/component: jenkins-master
        app.kubernetes.io/instance: cd
      sessionAffinity: None
      type: ClusterIP
    status:
      loadBalancer: {}
  - apiVersion: v1
    kind: Service
    metadata:
      creationTimestamp: 2020-03-07T12:41:08Z
      labels:
        component: apiserver
        provider: kubernetes
      name: kubernetes
      namespace: default
      resourceVersion: "148"
      selfLink: /api/v1/namespaces/default/services/kubernetes
      uid: 4881b523-a8e2-4ea5-a826-aa28060eb7a3
    spec:
      clusterIP: 10.96.0.1
      ports:
      - name: https
        port: 443
        protocol: TCP
        targetPort: 8443
      sessionAffinity: None
      type: ClusterIP
    status:
      loadBalancer: {}
  kind: List
  metadata:
    resourceVersion: ""
    selfLink: ""
  </code></pre>