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Review request for Ambari and Dmitro Lisnichenko. Bugs: AMBARI-19246 https://issues.apache.org/jira/browse/AMBARI-19246 Repository: ambari Description ------- ambari-server-2.5.0.0-496.x86_64 When starting Ambari Agent, getting this error. The server host is accessible. [root@c6405 ~]# ambari-agent start Verifying Python version compatibility... Using python /usr/bin/python Checking for previously running Ambari Agent... Starting ambari-agent Verifying ambari-agent process status... ERROR: ambari-agent start failed. For more details, see /var/log/ambari-agent/ambari-agent.out: ==================== Traceback (most recent call last): File "/usr/lib/python2.6/site-packages/ambari_agent/main.py", line 407, in <module> main(heartbeat_stop_callback) File "/usr/lib/python2.6/site-packages/ambari_agent/main.py", line 375, in main (retries, connected, stopped) = netutil.try_to_connect(server_url, MAX_RETRIES, logger) UnboundLocalError: local variable 'server_url' referenced before assignment ==================== Agent out at: /var/log/ambari-agent/ambari-agent.out Agent log at: /var/log/ambari-agent/ambari-agent.log ambari-agent.log: INFO 2016-12-19 23:53:42,640 PingPortListener.py:50 - Ping port listener started on port: 8670 WARNING 2016-12-19 23:53:42,761 main.py:371 - Unable to determine the IP address of the Ambari server 'c6404.ambari.apache.org' ERROR 2016-12-19 23:53:42,762 main.py:412 - Exiting with exception: Traceback (most recent call last): File "/usr/lib/python2.6/site-packages/ambari_agent/main.py", line 407, in <module> main(heartbeat_stop_callback) File "/usr/lib/python2.6/site-packages/ambari_agent/main.py", line 375, in main (retries, connected, stopped) = netutil.try_to_connect(server_url, MAX_RETRIES, logger) UnboundLocalError: local variable 'server_url' referenced before assignment INFO 2016-12-19 23:53:42,762 ExitHelper.py:53 - Performing cleanup before exiting... Diffs ----- ambari-agent/src/main/python/ambari_agent/main.py 50e5d62 Diff: https://reviews.apache.org/r/54890/diff/ Testing ------- mvn clean test Thanks, Andrew Onischuk