To deploy Kafka, you will need to make sure that Zookeeper is deployed. Otherwise Kafka will keep crashing since it cannot sync to a cluster. To actually deploy Kafka, just run:
kubectl apply -f kafka.yml
When inspecting kafka logs of various components and they are not able to send/receive message then Kafka is the usual problem. There are issues when Kube Pods cannot communicate with themselves over a Kube Service. Setting a network to promiscous mode can be the solution will enable network traffic to route in a loop back to itself. E.g:
ip link set docker0 promisc on
NOTE The docker0 network in the example above is the Pod network.
If you were using a CNI, then you would need to upgrade the CNI netowrk.
These fixes are of course only temporary fixes that can be used
when developing OpenWhisk on Kube. To deploy Kubernetes without the
need for for setting the network up with this manual fix, you need
to setup the Kubelet with --hairpin-mode.