Hari Sekhon created AMBARI-13967:
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Summary: Ranger partial install causes Host All Starts to fail,
prevents Cluster Services Start to not trigger at all (no pop-up)
Key: AMBARI-13967
URL: https://issues.apache.org/jira/browse/AMBARI-13967
Project: Ambari
Issue Type: Bug
Components: ambari-server
Affects Versions: 2.1.0
Environment: HDP 2.2
Reporter: Hari Sekhon
Priority: Critical
One of my clusters has Ranger service installed (but not yet configured) which
causes Ambari to be unable to manage it's services.
Doing Actions -> "Start All" from Dashboard doesn't absolutely nothing (no
pop-up appears, no outputs or errors) and doing Hosts -> Actions -> All Hosts
-> Stop All Components fails with the following exception:
{code}2015-11-19 09:59:59,893 - Execution of 'mysql -u root
--password=<password> -h <fqdn> -s -e "select version();"' returned 1. ERROR
2003 (HY000): Can't connect to MySQL server on '<fqdn>' (111)
Traceback (most recent call last):
File
"/var/lib/ambari-agent/cache/common-services/RANGER/0.4.0/package/scripts/ranger_admin.py",
line 124, in <module>
RangerAdmin().execute()
File
"/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
line 218, in execute
method(env)
File
"/var/lib/ambari-agent/cache/common-services/RANGER/0.4.0/package/scripts/ranger_admin.py",
line 45, in install
self.configure(env)
File
"/var/lib/ambari-agent/cache/common-services/RANGER/0.4.0/package/scripts/ranger_admin.py",
line 103, in configure
ranger('ranger_admin')
File
"/var/lib/ambari-agent/cache/common-services/RANGER/0.4.0/package/scripts/setup_ranger.py",
line 28, in ranger
setup_ranger_admin()
File
"/var/lib/ambari-agent/cache/common-services/RANGER/0.4.0/package/scripts/setup_ranger.py",
line 36, in setup_ranger_admin
check_db_connnection()
File
"/var/lib/ambari-agent/cache/common-services/RANGER/0.4.0/package/scripts/setup_ranger.py",
line 110, in check_db_connnection
raise Fail('Ranger Database connection check failed')
resource_management.core.exceptions.Fail: Ranger Database connection check
failed
{code}
This is a bug when Ambari is in a state where it's unable to control it's
services. I worked around it for now by removing the Ranger service via the API
until I have time to come back and properly redeploy it later.
Technically I can understand something failing the underlying database check
for a single service, but I've noticed that Ambari has a lot of fringe
conditions around state and having an installed but unconfigured service breaks
it.
Also there should never be a scenario where Start All does absolutely nothing
and doesn't feed back to the user in any way.
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