@yzydhf  Can you confirm if this is a new installation and you are facing the issue while starting yarn timelineserver for the first time?   From the exception we believe the ambari server runs as sudo user and the commands for the sudo user not set correctly, review the below documentation more information   https://docs.cloudera.com/HDPDocuments/Ambari-2.6.0.0/bk_ambari-security/content/how_to_configure_ambari_server_for_non-root.html   If you are still facing the issue attach below files/logs ambari-server log ambari.properties ... View more

@flowerbirds  From the error it looks issues with python packages, can you verify with the other hosts if there are any missing python packages in ../../lib/python2.7/site-packages on the agent host?   - Is you python version same on all the hosts?   - Run the command below and share the output from the issue host and healthy host rpm -qa | grep cloudera*   - parser module is known to cause, review the below   https://stackoverflow.com/questions/18577975/python-attributeerror-dep-map   https://stackoverflow.com/questions/54908171/pip-installation-of-aiohttp-fails-with-odd-attributeerror-dep-map ... View more

@enirys  - Can you confirm the value you have set for user.inactivity.timeout.default, user.inactivity.timeout.role.readonly.default - Can you share the complete 401 error users are experiencing?   - Can you confirm if you have spnego authentication enabled for ambari?   - Attach the below logs after 401 error occurs in ambari UI 1. ambari.properties file 2. ambari-audit.log 3. ambari-server.log   ... View more

To update public repo urls for HDF and HDF utils, please update the repoinfo.xml below on the ambari server host and restart ambari-server service using command [0], let me know if this works for you.   /var/lib/ambari-server/resources/mpacks/hdf-ambari-mpack-3.4.1.1-4/stacks/HDF/3.3/repos/repoinfo.xml /var/lib/ambari-server/resources/mpacks/hdf-ambari-mpack-3.4.1.1-4/stacks/HDF/2.0/repos/repoinfo.xml /var/lib/ambari-server/resources/mpacks/hdf-ambari-mpack-3.4.1.1-4/stacks/HDF/3.2/repos/repoinfo.xml /var/lib/ambari-server/resources/mpacks/hdf-ambari-mpack-3.4.1.1-4/stacks/HDF/3.0/repos/repoinfo.xml /var/lib/ambari-server/resources/mpacks/hdf-ambari-mpack-3.4.1.1-4/stacks/HDF/2.1/repos/repoinfo.xml /var/lib/ambari-server/resources/mpacks/hdf-ambari-mpack-3.4.1.1-4/stacks/HDF/3.4/repos/repoinfo.xml /var/lib/ambari-server/resources/mpacks/hdf-ambari-mpack-3.4.1.1-4/stacks/HDF/3.1/repos/repoinfo.xml   [0] #ambari-server restart ... View more