More lightweight kafka probe, essentially the same thing

Author: solsson

50kafka.yml

@@ -49,11 +49,9 @@ spec:
             cpu: 100m
             memory: 512Mi
         readinessProbe:
-          exec:
-            command:
-            - /bin/sh
-            - -c
-            - 'echo "" | nc -w 1 127.0.0.1 9092'
+          tcpSocket:
+            port: 9092
+          timeoutSeconds: 10
         volumeMounts:
         - name: config
           mountPath: /etc/kafka