Group service is not running , because of this the cluster is not starting. i am not sure what is causing issue, this is first distributed install of 17.3.
com.appian.komodo.engine.connection.KProcessManager - groups K engine process not running on port 5013 yet. Retrying in 5000ms.
ERROR com.appian.komodo.log.KafkaTransactionLogService - Exception appending epoch Optional[1512501032895] for content java.util.concurrent.TimeoutException: Failed to send all messages within 67s at com.appian.komodo.log.KafkaTransactionLogService.send(KafkaTransactionLogService.java:336) ~[core-1.69.3.jar:1.69.3] at com.appian.komodo.log.KafkaTransactionLogService.send(KafkaTransactionLogService.java:334) ~[core-1.69.3.jar:1.69.3] at com.appian.komodo.log.KafkaTransactionLogService.send(KafkaTransactionLogService.java:334) ~[core-1.69.3.jar:1.69.3] at com.appian.komodo.log.KafkaTransactionLogService.send(KafkaTransactionLogService.java:334) ~[core-1.69.3.jar:1.69.3] at com.appian.komodo.log.KafkaTransactionLogService.send(KafkaTransactionLogService.java:334) ~[core-1.69.3.jar:1.69.3] at com.appian.komodo.log.KafkaTransactionLogService.send(KafkaTransactionLogService.java:334) ~[core-1.69.3.jar:1.69.3] at com.appian.komodo.log.KafkaTransactionLogService.markEpoch(KafkaTransactionLogService.java:269) ~[core-1.69.3.jar:1.69.3] at com.appian.komodo.log.KafkaTransactionLogService.initialize(KafkaTransactionLogService.java:143) ~[core-1.69.3.jar:1.69.3] at com.appian.komodo.log.KafkaTransactionLogService.<init>(KafkaTransactionLogService.java:128) ~[core-1.69.3.jar:1.69.3] at com.appian.komodo.log.KafkaTransactionLogService_Factory.get(KafkaTransactionLogService_Factory.java:114) ~[core-1.69.3.jar:1.69.3] at com.appian.komodo.log.KafkaTransactionLog at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_144] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144] Suppressed: org.apache.kafka.common.errors.NotEnoughReplicasException: Messages are rejected since there are fewer in-sync replicas than required.
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prashantm963 : Can you please change the default port number in appian-topology.xml file,and try to run the services.
I think default port number is 5081 and this port number change to 5083, run the services.
change in topology port [First tag]. Change it from 5000 to 5083 and try to run.
Please find below link , It may Useful.
https://docs.appian.com/suite/help/18.1/Port_Usage.html .
In my case i have changed from 5000 to 5083 and it depends on the network configuration , After this port change Appian services are started working fine.