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[EOL] This is a place for various components in the Kubernetes ecosystem that aren't part of the Kubernetes core.
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kube-keepalived-vip: (vips): No VIP specified; at least one is required #2819

Closed fernandohackbart closed 6 years ago

fernandohackbart commented 6 years ago 
Starting Keepalived v1.2.24 (08/01,2017)
Opening file '/etc/keepalived/keepalived.conf'.
Starting Healthcheck child process, pid=19
Initializing ipvs
Starting VRRP child process, pid=21
Opening file '/etc/keepalived/keepalived.conf'.
Registering Kernel netlink reflector
Registering Kernel netlink command channel
Opening file '/etc/keepalived/keepalived.conf'.
Registering Kernel netlink reflector
Registering Kernel netlink command channel
Registering gratuitous ARP shared channel
Using LinkWatch kernel netlink reflector...
Got SIGHUP, reloading checker configuration
Initializing ipvs
Registering Kernel netlink reflector
Registering Kernel netlink command channel
Opening file '/etc/keepalived/keepalived.conf'.
Unable to initialise ipsets
Opening file '/etc/keepalived/keepalived.conf'.
Using LinkWatch kernel netlink reflector...
(vips): No VIP specified; at least one is required
Stopped
pid 21 exited with permanent error CONFIG. Terminating
Stopping
Stopped
Stopped Keepalived v1.2.24 (08/01,2017)
fernandohackbart commented 6 years ago

The content of my config map

apiVersion: v1
data:
  192.168.40.81: default/echoheaders
kind: ConfigMap
metadata:
  annotations:
    k8s.co/cloud-provider-config: '{"services":[{"uid":"ecf6d112-f4a5-11e7-b051-525400e28760","ip":"192.168.40.81"}]}'
  creationTimestamp: 2018-01-08T19:04:31Z
  name: vip-configmap
  namespace: kube-system
  resourceVersion: "1665"
  selfLink: /api/v1/namespaces/kube-system/configmaps/vip-configmap
  uid: c1c5917b-f4a6-11e7-b051-525400e28760

The daemon creation file

apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  labels:
    name: kube-keepalived-vip
  name: kube-keepalived-vip
  namespace: kube-system
spec:
  template:
    metadata:
      labels:
        name: kube-keepalived-vip
    spec:
      hostNetwork: true
      containers:       
        - image: gcr.io/google_containers/kube-keepalived-vip:0.11
          name: kube-keepalived-vip
          imagePullPolicy: Always
          securityContext:
            privileged: true
          volumeMounts:
            - mountPath: /lib/modules
              name: modules
              readOnly: true
            - mountPath: /dev
              name: dev
          # use downward API
          env:
            - name: POD_NAME
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
          # to use unicast
          args:
          - --services-configmap=kube-system/vip-configmap
          # unicast uses the ip of the nodes instead of multicast
          # this is useful if running in cloud providers (like AWS)
          #- --use-unicast=true
          # vrrp version can be set to 2.  Default 3.
          #- --vrrp-version=2
      volumes:
        - name: modules
          hostPath:
            path: /lib/modules
        - name: dev
          hostPath:
            path: /dev
      nodeSelector:
        node-role.kubernetes.io/node: worker
fernandohackbart commented 6 years ago

Using aledbf/kube-keepalived-vip:0.23 instead of gcr.io/google_containers/kube-keepalived-vip:0.11

funky81 commented 6 years ago

Hi @fernandohackbart , may I see your working vip-configmap and daemonset? somehow mine didnt work, although I tried to follow guidance from readme

fernandohackbart commented 6 years ago

Sure, sample application:

---
apiVersion: v1
kind: ReplicationController
metadata:
  name: echoheaders
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: echoheaders
    spec:
      containers:
      - name: echoheaders
        image: gcr.io/google_containers/echoserver:1.4
        ports:
        - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: echoheaders-service
  labels:
    app: echoheaders
  annotations:
    k8s.co/keepalived-forward-method: DR        
spec:
  type: LoadBalancer
  ports:
  - port: 80
    protocol: TCP
    targetPort: 8080
    name: http
  selector:
    app: echoheaders
fernandohackbart commented 6 years ago 
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: vip-configmap
  namespace: kube-system
data:
192.168.40.81: default/echoheaders-service
fernandohackbart commented 6 years ago 
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  labels:
    name: kube-keepalived-vip
  name: kube-keepalived-vip
  namespace: kube-system
spec:
  template:
    metadata:
      labels:
        name: kube-keepalived-vip
    spec:
      hostNetwork: true
      containers:       
        #- image: gcr.io/google_containers/kube-keepalived-vip:0.11
        - image: aledbf/kube-keepalived-vip:0.23
          name: kube-keepalived-vip
          imagePullPolicy: Always
          securityContext:
            privileged: true
          volumeMounts:
            - mountPath: /lib/modules
              name: modules
              readOnly: true
            - mountPath: /dev
              name: dev
          # use downward API
          env:
            - name: POD_NAME
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
          # to use unicast
          args:
          - --services-configmap=kube-system/vip-configmap
          # unicast uses the ip of the nodes instead of multicast
          # this is useful if running in cloud providers (like AWS)
          #- --use-unicast=true
          # vrrp version can be set to 2.  Default 3.
          #- --vrrp-version=2
      volumes:
        - name: modules
          hostPath:
            path: /lib/modules
        - name: dev
          hostPath:
            path: /dev
      nodeSelector:
        node-role.kubernetes.io/node: worker
fernandohackbart commented 6 years ago

I have also labeled the nodes with:

kubectl get nodes |grep -v master|grep Ready|awk '{print $1}' |while read line
do 
  kubectl label node $line node-role.kubernetes.io/node=worker
done
tceduard commented 5 years ago

I've had the same issue and it was due to the fact that I've had no "echoheaders" service