Hi Val, Could you share the server.properties and zookeeper.properties?
Thanks C Suresh On Tuesday, April 28, 2020, Valentin Kulichenko < valentin.kuliche...@gmail.com> wrote: > Greetings to the Kafka Community! > > I'm a newbie in Kafka and only recently went beyond a local installation > described in the Quickstart. I have faced a weird issue that I can't > explain. > > I want to deploy on two machines: > - Machine #1 runs ZooKeeper and a single Kafka broker. I use default > configuration files. > - Machine #2 runs a single instance of Kafka Connect. I use the source > connector for Ignite/GridGain (https://www.confluent.io/hub/ > gridgain/ignite-connector). I doubt it matters, though, as the issue > seems to be related to connectivity between the connector and the broker. > > After starting the ZooKeeper and the broker on machine #1, I did the > following on machine #2: > > 1. Updated plugin.path and bootstrap.servers parameters in the > connect-standalone.properties; bootstrap.servers points to the IP of the #1. > 2. Created a properties file for the GridGain connector. > 3. Start the connector using this command: > > bin/connect-standalone.sh config/connect-standalone.properties > config/gridgain-kafka-connect-source.properties > > The issue is that it doesn't connect to the remote broker, and still tries > localhost ignoring the bootstrap.servers settings. The output looks like > this: > > [2020-04-27 19:37:08,334] INFO StandaloneConfig values: > ... > bootstrap.servers = [98.1.96.147:9092] > ... > [2020-04-27 19:37:08,334] INFO Creating Kafka admin client > (org.apache.kafka.connect.util.ConnectUtils:43) > [2020-04-27 19:37:08,337] INFO AdminClientConfig values: > bootstrap.servers = [98.1.96.147:9092] > ... > [2020-04-27 19:37:08,950] WARN [AdminClient clientId=adminclient-1] > Connection to node 0 (localhost/127.0.0.1:9092) could not be established. > Broker may not be available. (org.apache.kafka.clients.NetworkClient:756) > [2020-04-27 19:37:09,052] WARN [AdminClient clientId=adminclient-1] > Connection to node 0 (localhost/127.0.0.1:9092) could not be established. > Broker may not be available. (org.apache.kafka.clients.NetworkClient:756) > [2020-04-27 19:37:09,253] WARN [AdminClient clientId=adminclient-1] > Connection to node 0 (localhost/127.0.0.1:9092) could not be established. > Broker may not be available. (org.apache.kafka.clients.NetworkClient:756) > > The warning goes on for a while until the process stops after a timeout. > > Does anyone have any idea why Kafka Connect can try to establish a > connection with the localhost, although it has picked up the correct IP > from the configuration file? > > The issue doesn't seem to be reproducible on any environment, so I > would appreciate any pointers on how to investigate this further. > > Kafka's version is 2.4.1. Config files and the log are attached. If > anything else is needed, let me know. > > Regards, > Val >
