Seeing occasinal connection on zookeeper on GKE e2-small instances.

and I'm guessing it could be due to throttling

Kafka for example reports:
kafka.zookeeper.ZooKeeperClientTimeoutException: Timed out waiting for connection while in state: CONNECTING

And zookeeper logs include things like:
java.io.EOFException
        at java.base/java.io.DataInputStream.readInt(DataInputStream.java:397)
        at org.apache.zookeeper.server.quorum.QuorumCnxManager$RecvWorker.run(QuorumCnxManager.java:1206)

[2020-03-06 12:35:45,056] WARN Connection broken for id 1, my id = 4, error =  (org.apache.zookeeper.server.quorum.QuorumCnxManager)
java.net.SocketException: Socket closed
        at java.base/java.net.SocketInputStream.socketRead0(Native Method)
        at java.base/java.net.SocketInputStream.socketRead(SocketInputStream.java:115)
        at java.base/java.net.SocketInputStream.read(SocketInputStream.java:168)
        at java.base/java.net.SocketInputStream.read(SocketInputStream.java:140)
        at java.base/java.io.BufferedInputStream.fill(BufferedInputStream.java:252)
        at java.base/java.io.BufferedInputStream.read(BufferedInputStream.java:271)
        at java.base/java.io.DataInputStream.readInt(DataInputStream.java:392)
        at org.apache.zookeeper.server.quorum.QuorumCnxManager$RecvWorker.run(QuorumCnxManager.java:1206)

I've been able to resolve it twice with this memory limit increase,
but of course it could also be that the restart resolves the issue.

Author: solsson

zookeeper/50pzoo.yml

@@ -63,7 +63,7 @@ spec:
           name: leader-election
         resources:
           requests:
-            cpu: 10m
+            cpu: 30m
             memory: 100Mi
           limits:
             memory: 120Mi

zookeeper/51zoo.yml

@@ -65,7 +65,7 @@ spec:
           name: leader-election
         resources:
           requests:
-            cpu: 10m
+            cpu: 30m
             memory: 100Mi
           limits:
             memory: 120Mi