Michael Davie created AMBARI-21702:
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Summary: ambari-agent registration fails due to invalid public
hostname
Key: AMBARI-21702
URL: https://issues.apache.org/jira/browse/AMBARI-21702
Project: Ambari
Issue Type: Bug
Components: ambari-agent
Affects Versions: 2.6.0
Environment: Networks with an active web proxy
Reporter: Michael Davie
* The script hostname.py
(https://github.com/apache/ambari/blob/79cca1c7184f1661236971dac70d85a83fab6c11/ambari-agent/src/main/python/ambari_agent/hostname.py)
attempts to retrieve a host's public hostname from AWS at the address
http://169.254.169.254/latest/meta-data/public-hostname.
* In a non-AWS network with a network proxy present, this request can return an
HTML login or redirect page, rather than the expected hostname value.
* The script does not validate the length or format of the returned value, and
submits the returned HTML code to ambari-server as the public hostname.
* Registration fails, as the HTML page exceeds the size (255 characters) of the
hostname field.
A functioning workaround has been published at
https://community.hortonworks.com/articles/42872/why-ambari-host-might-have-different-public-host-n.html.
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