Hi @Michael Bronson , ambari will give you recommendations on the Value to be set. You can set any value as per your Cluster and business logic. Once you saved and restart the Yarn clients the changes will be synced to your yarn-site.xml if you are able to save the configuration after clickin on proceed anyway ambari will save 100 . Please see if this helps you. ... View more

Hi @Thiago de Faria , Currently, ambari supports managing only One cluster and one HDP version. If you would like to upgrade only your spark version I would suggest you to mannually install a seperate spark server referring to this document: https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.5/bk_spark-component-guide/content/install-spark-non-ambari.html As per docs.hortonworks.com the HDP-2.6.5 contains Spark-2.3.0 https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.5/bk_release-notes/content/comp_versions.html Its not suggested to upgrade only Spark with all your HDP components remaining in HDP-2.6.4 Please accept the answer if this helped you. ... View more

Hi @Alex M, Referring to your error log it seems your agent registration is failing due to below error message : ("WARNING 2018-09-10 23:55:35,248 shell.py:822 - can not switch user for RUN_COMMAND. WARNING 2018-09-10 23:55:35,352 shell.py:822 - can not switch user for RUN_COMMAND. INFO 2018-09-10 23:55:35,456 main.py:311 - Agent not going to die gracefully, going to execute kill -9 WARNING 2018-09-10 23:55:35,456 shell.py:822 - can not switch user for RUN_COMMAND. Are you installing ambari as non-root user , have you given proper permissions as neccessary ? Also can you please try to install and register ambari-agent mannually : https://docs.hortonworks.com/HDPDocuments/Ambari-2.6.2.0/bk_ambari-administration/content/install_the_ambari_agents_manually.html and proceed using the add-host wizard. Also i assume your node can do password less SSH to ip-10-40-145-25.ec2.internal which is your ambari-server ip. (even if its same host its required to have publickey added to authorized_keys ) cat id_rsa.pub >> authorized_keys refer to : https://docs.hortonworks.com/HDPDocuments/Ambari-2.7.0.0/bk_ambari-installation/content/set_up_password-less_ssh.html Please see if this helps you, please login and accept this answer if it did. ... View more

Hi @Shobhna Dhami , The issue is caused due to the fix in AMBARI-22952. You can resolve this by : 1) stop ambari-server 2) run command : refer : accept GPL license ambari-server setup --enable-lzo-under-gpl-license 3) start ambari-server and try again. Please let me know if this doesn't worked. Please accept answer if it did ... View more

Hi @Joel Hatcher, as the exception indicates topology already exists why dont you go kill the topology and try to start it again. the syntax for storm CLI will be storm kill topology-name [-w wait-time-secs] ... View more

Hi @Kumar Veerappan , Yeah you can know the rack topology structure of cluster using ambari. You can actually refer to this blog which is more helpfull and explained in detail: https://community.hortonworks.com/articles/43164/rack-awareness-series-2.html Please login and accept answer if you found this answer helpfull ... View more