policy-based-routing

Policy Based Routing

This example shows policy based routing usage.

NSE is configured by ConfigMap that contains the policy routes.

Based on Kernel2Kernel example.

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/features/policy-based-routing?ref=c91be29099fab1f8376d9ff90c858efd829de35e

Wait for applications ready:

kubectl wait --for=condition=ready --timeout=1m pod -l app=nettools -n ns-policy-based-routing

kubectl wait --for=condition=ready --timeout=1m pod -l app=nse-kernel -n ns-policy-based-routing

Ping from NSC to NSE:

kubectl exec pods/nettools -n ns-policy-based-routing -- ping -c 4 172.16.1.100

Ping from NSE to NSC:

kubectl exec deployments/nse-kernel -n ns-policy-based-routing -- ping -c 4 172.16.1.101

Check policy based routing:

result=$(kubectl exec pods/nettools -n ns-policy-based-routing -- ip r get 172.16.3.1 from 172.16.2.201 ipproto tcp dport 6666)
echo ${result}
echo ${result} | grep -E -q "172.16.3.1 from 172.16.2.201 via 172.16.2.200 dev nsm-1 table 1"

result=$(kubectl exec pods/nettools -n ns-policy-based-routing -- ip r get 172.16.3.1 from 172.16.2.201 ipproto tcp sport 5555)
echo ${result}
echo ${result} | grep -E -q "172.16.3.1 from 172.16.2.201 dev nsm-1 table 2"

result=$(kubectl exec pods/nettools -n ns-policy-based-routing -- ip r get 172.16.4.1 ipproto udp dport 6666)
echo ${result}
echo ${result} | grep -E -q "172.16.4.1 dev nsm-1 table 3 src 172.16.1.101"

result=$(kubectl exec pods/nettools -n ns-policy-based-routing -- ip r get 172.16.4.1 ipproto udp dport 6668)
echo ${result}
echo ${result} | grep -E -q "172.16.4.1 dev nsm-1 table 4 src 172.16.1.101"

result=$(kubectl exec pods/nettools -n ns-policy-based-routing -- ip -6 route get 2004::5 from 2004::3 ipproto udp dport 5555)
echo ${result}
echo ${result} | grep -E -q "via 2004::6 dev nsm-1 table 5 src 2004::3"

Cleanup

Delete ns:

kubectl delete ns ns-policy-based-routing