Robert Levas created AMBARI-21602:
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Summary: Pre-configure services when Kerberos is enabled to reduce
number of core service restarts when services are added
Key: AMBARI-21602
URL: https://issues.apache.org/jira/browse/AMBARI-21602
Project: Ambari
Issue Type: Task
Components: ambari-server
Affects Versions: 2.6.0
Reporter: Robert Levas
Assignee: Robert Levas
Fix For: 2.6.0
Pre-configure (certain) services when Kerberos is enabled to reduce number of
core service restarts when services are added.
While processing the Kerberos descriptor, include services marked to be
_pre-configured_. When a tagged service is encountered, process it weather it
is installed or not. However if it is not installed, only apply configuration
changes for existing configuration types. This will set at least the core-site
changes related to proxyuser and auth-to-local rules properties. By doing this,
if a tagged service is later installed, the settings will already be in place
in the existing service configs and thus the existing services will not need to
be restarted.
Caveats:
* Default values for the uninstalled, tagged, services will be assumed
* The stack advisor will be used to suggest locations of components - used to
build the clusterHostInfo structure that may be used to derive property values.
Note: This processing is to occur when Kerberos is enabled.
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