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https://reviews.apache.org/r/35780/
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Review request for Ambari and Dmitro Lisnichenko.
Bugs: AMBARI-12085
https://issues.apache.org/jira/browse/AMBARI-12085
Repository: ambari
Description
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SITUATION:
1) Ambari 2.1.0 build #1105
2) non-root server + non-root agents + umask 027
3) Installed HDP 2.3 core (see attached for components + layout)
4) customized service accounts (threw a "j" in front of everything)
5) visudo for non-root agent is setup as shown below
6) once cluster is installed, I went to the host with the namenode and from
Ambari web, said to stop namenode. ambari returned green but the process was
not killed (pid file was removed though).
PROBLEM:
Ambari is not able to read the .pid file unless the agent non-root user is in
the "jhadoop" group (to get read access).
[vagrant@c6401 jhdfs]$ ls -l
total 12
-rw-r----- 1 jhdfs jhadoop 6 Jun 16 17:51 hadoop-jhdfs-journalnode.pid
-rw-r----- 1 jhdfs jhadoop 6 Jun 16 17:51 hadoop-jhdfs-namenode.pid
-rw-r----- 1 jhdfs jhadoop 6 Jun 16 17:52 hadoop-jhdfs-zkfc.pid
[vagrant@c6401 jhdfs]$ id ambari
uid=502(ambari) gid=503(ambari) groups=503(ambari)
SOLUTION:
This part of Stop should not be run as agent non-root "ambari", but as the
jhdfs user (because that use should be able to read the pid). Otherwise, we
end up with ambari deleting the pid (because it can't read the pid file), so
then the component stop fails.
2015-06-16 17:13:03,137 -
u"File['/var/run/hadoop/jhdfs/hadoop-jhdfs-namenode.pid']" {'action':
['delete'], 'not_if': 'ls /var/run/hadoop/jhdfs/hadoop-jhdfs-namenode.pid
>/dev/null 2>&1 && ps -p `cat /var/run/hadoop/jhdfs/hadoop-jhdfs-namenode.pid`
>/dev/null 2>&1'}
mahadev FYI
Diffs
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ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/service_check.py
7a1e6b7
ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/utils.py
11076aa
ambari-server/src/test/python/stacks/2.0.6/HDFS/test_datanode.py c57a422
ambari-server/src/test/python/stacks/2.0.6/HDFS/test_journalnode.py 646432d
ambari-server/src/test/python/stacks/2.0.6/HDFS/test_namenode.py 3df09ff
ambari-server/src/test/python/stacks/2.0.6/HDFS/test_nfsgateway.py 8ac7cf8
ambari-server/src/test/python/stacks/2.0.6/HDFS/test_snamenode.py 3269eda
ambari-server/src/test/python/stacks/2.0.6/HDFS/test_zkfc.py f4e6b19
Diff: https://reviews.apache.org/r/35780/diff/
Testing
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mvn clean test
Thanks,
Andrew Onischuk
