Ingress traffic restriction from kubernetes network to data center network -


communication between kubernetes network & datacenter network firewall.

i came out used case discussion fall.

let me explain little briefly.

we running multiple pod inside kubernetes platform. take examples app-1, app-2 app-3.

now multiple databases (db-1, db-2, db-3) running outside kubernetes cluser. in front of database there firewall.

app-1 can connect db-1 no other container should connect db-1 app-3 connect db-3 no others container should connect db-3 app-3 or other container should not connect db. enter image description here

as kubernetes uses flat networking each container can talk other outside side of kubernetes cluster.

looking solution , cni pluggins can solve problem statement.

also please explain how networks policy in given scenario & changes (rule or policy) have in external firewall.


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