We had kerberised the HDP cluster and storm UI was not opening and we need to troubleshoot StormUI issue. To put DEBUG on for STormUI follow this steps: -------------------------------------------------------------- In Ambari - Storm - Config - STORM UI Server section add below : ui.childopts(original)= -Xmx768m_JAAS_PLACEHOLDER ui.childopts = -Xmx768m_JAAS_PLACEHOLDER -Dsun.security.krb5.debug=true we wanted to troubleshoot zookeeper as well To put DEBUG on for Zookeeper follow this steps: ------------------------------------------------------------------ In Amabri - Zookeeeper - Advanced Zookeeper-log4j add below: #log4j.rootLogger=INFO,CONSOLE ***Comment this line log4j.rootLogger=DEBUG,CONSOLE,ROLLINGFILE ***uncomment this line The log file will be generated by default to /home/zookeeper/zookeeper.log if below property is set as default. log4j.appender.ROLLINGFILE.File=zookeeper.log ... View more

The Ranger KMS logs are present cd /usr/hdp/current/ranger-kms/ews lrwxrwxrwx 1 kms kms 19 sep 23 20:33 logs-> /var/log/ranger/kms We would like to change ranger KMS logs location from /var/log/ ranger/kms to /hadoop/log/ranger/kms. mkdir /hadoop/log/ranger/kms chmod 755 /hadoop/log/ranger/kms chown kms:kms /hadoop/log/ranger/kms rm symbolic link for logs cd /usr/hdp/current/ranger-kms/ vi ranger-kms search for word "TOMCAT_LOG_DIR" and replace with new location. TOMCAT_LOG_DIR=/hadoop/log/ranger/kms In Ambari webUI update log directory for ranger KMS kms_log_dir property. Restart KMS ... View more