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This wiki describes how to set up a Kubernetes cluster with kuberadm, and then deploying SDN-C within that Kubernetes cluster.

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Code Block
languagebash
sudo kubectl get pods --all-namespaces -o wide
NAMESPACE     NAME                                    READY     STATUS    RESTARTS   AGE       IP               NODE
kube-system   etcd-k8s-master                      1/1       Running   0          1m        10.147.112.140   k8s-master
kube-system   kube-apiserver-k8s-master            1/1       Running   0          1m        10.147.112.140   k8s-master
kube-system   kube-controller-manager-k8s-master   1/1       Running   0          1m        10.147.112.140   k8s-master
kube-system   kube-dns-545bc4bfd4-jcklm            3/3       Running   0          44m       10.32.0.2        k8s-master
kube-system   kube-proxy-lnv7r                     1/1       Running   0          44m       10.147.112.140   k8s-master
kube-system   kube-scheduler-k8s-master            1/1       Running   0          1m        10.147.112.140   k8s-master
kube-system   weave-net-b2hkh                      2/2       Running   0          1m        10.147.112.140   k8s-master


#(There will be 2 coredns pods with different IP addresses, with kubernetes version 1.10.1)

# Verify the AVAIABLE flag for the deployment "kube-dns" or "coredns" will be changed to 1. (2 with kubernetes version 1.10.1)
#For coredns
sudo kubectl get deployment --all-namespaces
NAMESPACE     NAME      DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
kube-system   coredns   2         2         2            2           2m

#For kubedns
sudo kubectl get deployment --all-namespaces
NAMESPACE     NAME       DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
kube-system   kube-dns   1         1         1            1           1h

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Code Block
languagebash
decrease sdnc pods to 1 
$ kubectl scale statefulset  sdnc -n onap-sdnc --replicas=1
statefulset "sdnc" scaled


# verify ..2 sdnc pods will terminate
$ kubectl get pods --all-namespaces -a | grep sdnc
onap-sdnc    nfs-provisioner-5fb9fcb48f-cj8hm      1/1       Running       0          21h
onap-sdnc    sdnc-0                                2/2       Running       0          2h
onap-sdnc    sdnc-1                                0/2       Terminating   0         40m
onap-sdnc    sdnc-2                                0/2       Terminating   0         15m


increase sdnc pods to 5
$ kubectl scale statefulset  sdnc -n onap-sdnc --replicas=5
statefulset "sdnc" scaled

increase db pods to 4
$kubectl scale statefulset sdnc-dbhost -n onap-sdnc  --replicas=5
statefulset "sdnc-dbhost" scaled

$ kubectl get pods --all-namespaces -o wide | grep onap-sdnc
onap-sdnc     nfs-provisioner-7fd7b4c6b7-d6k5t        1/1       Running   0          13h       10.42.0.149     sdnc-k8s
onap-sdnc     sdnc-0                                  2/2       Running   0          13h       10.42.134.186   sdnc-k8s
onap-sdnc     sdnc-1                                  2/2       Running   0          13h       10.42.186.72    sdnc-k8s
onap-sdnc     sdnc-2                                  2/2       Running   0          13h       10.42.51.86     sdnc-k8s
onap-sdnc     sdnc-dbhost-0                           2/2       Running   0          13h       10.42.190.88    sdnc-k8s
onap-sdnc     sdnc-dbhost-1                           2/2       Running   0          12h       10.42.213.221   sdnc-k8s
onap-sdnc     sdnc-dbhost-2                           2/2       Running   0          5m        10.42.63.197    sdnc-k8s
onap-sdnc     sdnc-dbhost-3                           2/2       Running   0          5m        10.42.199.38    sdnc-k8s
onap-sdnc     sdnc-dbhost-4                           2/2       Running   0          4m        10.42.148.85    sdnc-k8s
onap-sdnc     sdnc-dgbuilder-6ff8d94857-hl92x         1/1       Running   0          13h       10.42.255.132   sdnc-k8s
onap-sdnc     sdnc-portal-0                           1/1       Running   0          13h       10.42.141.70    sdnc-k8s
onap-sdnc     sdnc-portal-1                           1/1       Running   0          13h       10.42.60.71     sdnc-k8s
onap-sdnc     sdnc-portal-2   



sudo ntpdate -s 10.247.5.11