Hi Pei,
REST API is the only way to perform all Ambari operations. So it is not about the best practice. You could also write an upgrade pack and actually upgrade the service through Ambari. The scripts that I mentioned call the REST API to do get and put operations on configs instead of the user trying to make curl calls. - Sid ________________________________ From: Pei H Zeng <[email protected]> Sent: Thursday, March 09, 2017 4:26 PM To: [email protected] Cc: [email protected] Subject: Re: Apply custom service configs using Rest API Hi, What I meant was, after I backed up the configs for my service, I will be removing it from Ambari, and I will be laying down a new stack definition for the service and I will be installing this new version of the service after Ambari has upgraded. So I will need to carry over the configs that was backed up for the previous version. My question is: is it good practice to apply the configs using Rest Api? Thanks ----- Original message ----- From: Siddharth Wagle <[email protected]> To: "[email protected]" <[email protected]> Cc: Subject: Re: Apply custom service configs using Rest API Date: Thu, Mar 9, 2017 4:10 PM Ambari upgrade should not affect your custom service in any way. Depending on what version of Ambari you are on, you might have to back up your service definition that you placed in the Ambari server resources/common-services and resource/stacks dirs. We have a script to aid config backup / restore. Although unlikely you would need it unless using an older Ambari version in which rpm over-wrote service definition. Location: /var/lib/ambari-server/resources/scripts/configs.sh Newer version: /var/lib/ambari-server/resources/scripts/configs.py BR, Sid ________________________________ From: Pei H Zeng <[email protected]> Sent: Thursday, March 09, 2017 3:53 PM To: [email protected] Subject: Apply custom service configs using Rest API Hi, I am trying to carry over the saved configs for a custom service using REST API during Ambari upgrade process. e.g. Upgrade Ambari, back up the configs, remove the service, install new version of the service, and apply the previously saved configs using REST API. Is it considered good practice to do so? i.e. using REST API to apply the configurations. Thanks, Pei
