README.md

Local NSMgr restart

This example shows that NSM keeps working after the local NSMgr restart.

NSC and NSE are using the kernel mechanism to connect to its local forwarder. Forwarders are using the vxlan mechanism to connect with each other.

Requires

Make sure that you have completed steps from basic or memory setup.

Run

Deploy NSC and NSE:

kubectl apply -k https://github.com/networkservicemesh/deployments-k8s/examples/heal/local-nsmgr-restart?ref=c91be29099fab1f8376d9ff90c858efd829de35e

Wait for applications ready:

kubectl wait --for=condition=ready --timeout=1m pod -l app=alpine -n ns-local-nsmgr-restart

kubectl wait --for=condition=ready --timeout=1m pod -l app=nse-kernel -n ns-local-nsmgr-restart

Ping from NSC to NSE:

kubectl exec pods/alpine -n ns-local-nsmgr-restart -- ping -c 4 172.16.1.100

Ping from NSE to NSC:

kubectl exec deployments/nse-kernel -n ns-local-nsmgr-restart -- ping -c 4 172.16.1.101

Find nsc node:

NSC_NODE=$(kubectl get pods -l app=alpine -n ns-local-nsmgr-restart --template '{{range .items}}{{.spec.nodeName}}{{"\n"}}{{end}}')

Find local NSMgr pod:

NSMGR=$(kubectl get pods -l app=nsmgr --field-selector spec.nodeName==${NSC_NODE} -n nsm-system --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}')

Restart local NSMgr and wait for it to start:

kubectl delete pod ${NSMGR} -n nsm-system

kubectl wait --for=condition=ready --timeout=1m pod -l app=nsmgr --field-selector spec.nodeName==${NSC_NODE} -n nsm-system

Ping from NSC to NSE:

kubectl exec pods/alpine -n ns-local-nsmgr-restart -- ping -c 4 172.16.1.100

Ping from NSE to NSC:

kubectl exec deployments/nse-kernel -n ns-local-nsmgr-restart -- ping -c 4 172.16.1.101

Cleanup

Delete ns:

kubectl delete ns ns-local-nsmgr-restart