@Kuldeep Kulkarni - thanks for the post. Do we have to add Spark & Spark2 classes to oozie.service.ActionService.executor.ext.classes for Spark action & Spark2 action please confirm. ... View more

Thanks @Santhosh B Gowda. We have around 15Nodes in the cluster. The Ambari version is 2.6.1.5 & HDP 2.6.3. We are preparing the OS Upgrade plan for production, We are doing this in test region. I have the following questions a. Can you confirm if we have to upgrade Ambari2.6.1.5 to Ambari 2.7 before starting the OS Migration. This will enable us to use 'Recover Host' option introduced in the Ambari 2.7. b. Should we start with the Ambari 2.6.1.5. We will have to ensure that we have upgraded all the servers to RHEL 7 with Ambari agent & Ambari server as 2.6.1.5. Once all the Servers are upgraded to RHEL 7, We will have all the servers running Ambari 2.6.1.5 in all the servers running RHEL 7. Post this we can upgrade Ambari to 2.7. What would be your approach to this. ... View more

@michael - We have done this in our cluster(170Nodes), It was done a year back. We took down time to perform this, Brought the whole cluster down. The steps mentioned by Jay were followed by us. the DNS changes were made during the downtime. We had two networking scripts ready on the Linux servers, one was pointing to the old ip & another pointing to new ip. Once the cluster was brought down, the new ip addresses were brought up. Post this we have started all the Ambari & Hadoop services manually. ... View more

We are using this in our environment. It works fine. If we would like to get the host name in the alert next what should we add to the snmptrap command ? You have the alerthost in this sample command snmptrap -v 2c-c public localhost '' APACHE-AMBARI-MIB::apacheAmbariAlert alertDefinitionName s "definitionName" alertDefinitionHash s "definitionHash" alertName s "name" alertText s "text" alertState i 0 alertHost s "host" alertService s "service" alertComponent s "component" Like this what will be the command for snmp_mib_script.sh - to include the alertHost ? /usr/bin/snmptrap -v 2c -c $COMMUNITY $HOST '' APACHE-AMBARI-MIB::apacheAmbariAlert alertDefinitionName s "$1" alertName s "$2" alertText s "$5" alertState i $STATE alertService s "$3" ... View more

Thanks Michalis. I will go through the links if I am in any doubt I will revert to you. Thanks Again. ... View more

I will have this tried on Monday and keep you posted. I have installed using Packages before, Now upgrading to CDH5.5.1 using parcels would be okay? Or do you foresee any challenges ... View more

Hi Michalis - Thanks for replying.   I am using Cloudera Express edition. With Cloudera Express edition, I believe that we cannot use parcels for installation. Please confirm this. If we can't resolve this error, the only way out is going to be the manual installation using packages. Let me know if you think this can be resolved/rectified. ... View more