@jay thank you , another little equation regrading that in configs.sh in order to set new value we do that ( for example ) /var/lib/ambari-server/resources/scripts/configs.sh set localhost HDP yarn.timeline-service.recovery.enabled true what is the syntax for configs.py? ... View more

@Jay again thasnk you so much yours remarks are very useful to us , and your knowledge is empresive ... View more

ok Jay , so I will do the workaround in order to enable the ambari-server backup ( create empty folders - stack-recommendations , bootstrap) ... View more

Dear Jay thank you so much for all explains , just one last idea that I was thinking about this, in order to enable the ambari-server backup please tell me please you opinion? as you see here when we backup the ambari we get error because the missing folders /usr/sbin/ambari-server backup Using python /usr/bin/python Backing up Ambari File System state... *this will not backup the server database* Backup requested. No path specified. Will use /var/lib/ambari-server/Ambari_State_Backup.zip Backup process initiated. Error while validating folders. Folder /var/run/ambari-server/bootstrap/ does not exist. so as workaround I create empty folders as: mkdir /var/run/ambari-server/stack-recommendations mkdir /var/run/ambari-server/bootstrap/ now we run again the ambari-server backup , and backup succeeded /usr/sbin/ambari-server backup Using python /usr/bin/python Backing up Ambari File System state... *this will not backup the server database* Backup requested. No path specified. Will use /var/lib/ambari-server/Ambari_State_Backup.zip Backup process initiated. Creating zip file... Zip file created at /var/lib/ambari-server/Ambari_State_Backup.zip Backup complete. Ambari Server 'backup' completed successfully. Jay what you think about this approach ? ... View more

@Jay regarding to my previeos comment , do you have other simple solution ( instead steps 1-4) ? ... View more

@Jay indeed when I change some value from ambari then I saw the folder - /var//ambari-server/stack-recommendations , but after that we need to return the value back as was , but this approach require us the following steps ( from script ) 1. change some value from ambari GUI ( by API ) 2 because change we need to restart relevant services ( by API ) 3 change back the value as was before ( by API ) 4 second restart services to complete ( by API ) as you see from steps 1-4 all this are needed only to create the stack-recommendations folder I want to share with you the all picture "we complete to create auto tool that perform ambari upgrade during the ambari upgrade auto process it create ambari dump (pg_dump -U ambari -f /var/tmp/dbdumps/ambari.sql) but this dump required stack-recommendations folder so in case stack-recommendations isnt under /var/run then the script will update the ambari properties and re-run the ambari setup in order to prepare the folder under /var/ambari-server , and then script need to run API to change value in order to create the stack-recommendations folder and do restart ......." so this approach required too many steps in order to bring the folder live ... View more

@Jay after we fine-tune the parameters (yesterday), now every thing is ok and metrics collector is up , in spite all this do you want to restart the AMS collector? anyway? ... View more