@Samir Buche Please follow the link may be it's help you.
yum erase ambari-agent rm -rf /var/lib/ambari-agent rm -rf /var/log/ambari-agent rm -rf /usr/lib/python2.6/site-packages/ambari_agent yum install -y ambari-agent Or please follow the link. https://community.hortonworks.com/questions/25382/hdp-exporess-upgrade-failing-with-importerror-cann.html
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