Ambari consistency check failed while installing service

[#1]

Hi,

We had a HDP Cluster on version 2.6.4. we are trying to add a new service to the cluster via Ambari (the issue happens with any service: sqoop, superset,...), buy the install process raise the error: Consistency Check Failed, and after that:

500 status code received on POST method for API: /api/v1/stacks/HDP/versions/2.6/recommendations

<strong>Error message: </strong>Stack Advisor reported an error: ParseError: mismatched tag: line 50, column 50
StdOut file: /var/run/ambari-server/stack-recommendations/12/stackadvisor.out

StdErr file: /var/run/ambari-server/stack-recommendations/12/stackadvisor.err

And in the stackadvisor.err:

Traceback (most recent call last):
File "/var/lib/ambari-server/resources/scripts/stack_advisor.py", line 173, in <module>
main(sys.argv)
File "/var/lib/ambari-server/resources/scripts/stack_advisor.py", line 121, in main
result = stackAdvisor.recommendConfigurations(services, hosts)
File "/var/lib/ambari-server/resources/scripts/../stacks/stack_advisor.py", line 776, in recommendConfigurations
calculation(configurations, clusterSummary, services, hosts)
File "/var/lib/ambari-server/resources/scripts/./../stacks/HDP/2.2/services/stack_advisor.py", line 920, in recommendKnoxConfigurations
root = ET.fromstring(topologyContent)
File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1311, in XML
parser.feed(text)
File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1653, in feed
self._raiseerror(v)
File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1517, in _raiseerror
raise err
ParseError: mismatched tag: line 50, column 50

Regards

[#2]

@Jorge Alonso

File "/var/lib/ambari-server/resources/scripts/./../stacks/HDP/2.2/services/stack_advisor.py",
 line 920, in recommendKnoxConfigurations
 root = ET.fromstring(topologyContent)

Based on the error it looks like you are using knox and your knox topology file seems to have some missing tags.

Can you please check & share your Knox Topology XML file (Somewhere here "/etc/knox/conf/topologies") and then find if any tag is not terminated properly?