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change-nse-dynamically

README.md

Example: NSC changes NSE on Network Service updated

This example shows that NSC can change NSEs if network service has changed during connection without redeploying.

Requires

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

Run

Deploy NSC and two NSEs:

kubectl apply -k https://github.com/networkservicemesh/deployments-k8s/examples/features/change-nse-dynamically?ref=6d8a27030aa0de0145b0b66a8f81217a8294a55e
kubectl apply -f https://raw.githubusercontent.com/networkservicemesh/deployments-k8s/6d8a27030aa0de0145b0b66a8f81217a8294a55e/examples/features/change-nse-dynamically/blue-netsvc.yaml

Wait for applications ready:

kubectl wait --for=condition=ready --timeout=1m pod -l app=alpine -n ns-change-nse-dynamically
kubectl wait --for=condition=ready --timeout=1m pod -l app=blue-nse -n ns-change-nse-dynamically
kubectl wait --for=condition=ready --timeout=1m pod -l app=green-nse -n ns-change-nse-dynamically

Ping from NSC to the blue NSE:

kubectl exec pods/alpine -n ns-change-nse-dynamically -- ping -c 4 172.16.2.100

Ping from the blue NSE to NSC:

kubectl exec pods/blue-nse -n ns-change-nse-dynamically -- ping -c 4 172.16.2.101

Change network service to select green endpoint:

kubectl apply -f https://raw.githubusercontent.com/networkservicemesh/deployments-k8s/6d8a27030aa0de0145b0b66a8f81217a8294a55e/examples/features/change-nse-dynamically/green-netsvc.yaml

Ping from NSC to the green NSE:

kubectl exec pods/alpine -n ns-change-nse-dynamically -- ping -c 4 172.16.1.100

Ping from the green NSE to NSC:

kubectl exec pods/green-nse -n ns-change-nse-dynamically -- ping -c 4 172.16.1.101

Change network service to select blue endpoint:

kubectl apply -f https://raw.githubusercontent.com/networkservicemesh/deployments-k8s/6d8a27030aa0de0145b0b66a8f81217a8294a55e/examples/features/change-nse-dynamically/blue-netsvc.yaml

Ping from NSC to the blue NSE:

kubectl exec pods/alpine -n ns-change-nse-dynamically -- ping -c 4 172.16.2.100

Ping from the blue NSE to NSC:

kubectl exec pods/blue-nse -n ns-change-nse-dynamically -- ping -c 4 172.16.2.101

Cleanup

Delete ns:

kubectl delete ns ns-change-nse-dynamically