Elias Levy created FLINK-8311:
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Summary: Flink needs documentation for network access control
Key: FLINK-8311
URL: https://issues.apache.org/jira/browse/FLINK-8311
Project: Flink
Issue Type: Improvement
Components: Documentation
Affects Versions: 1.4.0
Reporter: Elias Levy
There is a need for better documentation on what connects to what over which
ports in a Flink cluster to allow users to configure network access control
rules.
E.g. I was under the impression that in a ZK HA configuration the Job Managers
were essentially independent and only coordinated via ZK. But starting
multiple JMs in HA with the JM RPC port blocked between JMs shows that the
second JM's Akka subsystem is trying to connect to the leading JM:
INFO akka.remote.transport.ProtocolStateActor - No
response from remote for outbound association. Associate timed out after [20000
ms].
WARN akka.remote.ReliableDeliverySupervisor -
Association with remote system [akka.tcp://[email protected]:6123] has
failed, address is now gated for [5000] ms. Reason: [Association failed with
[akka.tcp://[email protected]:6123]] Caused by: [No response from remote for
outbound association. Associate timed out after [20000 ms].]
WARN akka.remote.transport.netty.NettyTransport - Remote
connection to [null] failed with
org.apache.flink.shaded.akka.org.jboss.netty.channel.ConnectTimeoutException:
connection timed out: /10.210.210.127:6123
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