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https://issues.apache.org/jira/browse/AMBARI-23580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aravindan Vijayan resolved AMBARI-23580.
----------------------------------------
Resolution: Fixed
PR merged to trunk.
> Failed to stop AMS components after Ambari-only upgrade
> -------------------------------------------------------
>
> Key: AMBARI-23580
> URL: https://issues.apache.org/jira/browse/AMBARI-23580
> Project: Ambari
> Issue Type: Bug
> Components: ambari-metrics
> Affects Versions: 2.7.0
> Reporter: Aravindan Vijayan
> Assignee: Aravindan Vijayan
> Priority: Critical
> Labels: pull-request-available
> Fix For: 2.7.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> STR:
> # Install Ambari 2.6.x with HDP 2.6 (AMS is the only important service)
> # Enable Kerberos
> # Upgrade to Ambari 2.7.0
> # Stop/Restart AMS
> {noformat:title=Metrics Monitor Stop}
> Traceback (most recent call last):
> File
> "/var/lib/ambari-agent/cache/common-services/AMBARI_METRICS/0.1.0/package/scripts/metrics_monitor.py",
> line 72, in <module>
> AmsMonitor().execute()
> File
> "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py",
> line 353, in execute
> method(env)
> File
> "/var/lib/ambari-agent/cache/common-services/AMBARI_METRICS/0.1.0/package/scripts/metrics_monitor.py",
> line 46, in stop
> import params
> File
> "/var/lib/ambari-agent/cache/common-services/AMBARI_METRICS/0.1.0/package/scripts/params.py",
> line 347, in <module>
> kinit_cmd = '%s -kt %s %s' % (kinit_path_local,
> config['configurations']['ams-hbase-security-site']['ams.monitor.keytab'],
> config['configurations']['ams-hbase-security-site']['ams.monitor.principal'].replace('_HOST',_hostname_lowercase))
> File
> "/usr/lib/ambari-agent/lib/resource_management/libraries/script/config_dictionary.py",
> line 73, in __getattr__
> raise Fail("Configuration parameter '" + self.name + "' was not found in
> configurations dictionary!")
> resource_management.core.exceptions.Fail: Configuration parameter
> 'ams.monitor.principal' was not found in configurations dictionary!
> {noformat}
> Other AMS components failed to stop too.
> Update: The issue persists even after AMS is upgraded, hence bumped to blocker
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