how to update ambari cluster with blueprint.json file

[#1]

we have many Ambari LAB clusters - Apache Ambari Version 2.5.0.3

my target is to find a way to update the values of services , on all the Ambari clusters , by automate the process

what we do until now , is take each ambari cluster and change the services values - but this take a lot of time

so if we have diff 25 ambari LAB clusters , then we need access each ambari cluster and change the values , this is very exhausting in case we have alot of values to change

but we have a new idea to automate the process

what we thinking is to generate the blueprint.json file as the following:

         curl -H "X-Requested-By: ambari" -X GET -u
admin:admin
http://{ambari_host}:8080/api/v1/clusters/{Cluster_name}\?format\=blueprint
> blueprint.json

then update/change the values from the json file

and finally upload the json file on all clusters

the big question is:

how to update the new json update file on current ambari cluster ? is it possible scenario ?

[#2]

@uri ben-ari

If I understand you well,you want to make a change a cluster and replicate that to all the other lab clusters ? Right I would think that is doable if you can script you curl do loop through the clusters you will have to deal with inter cluster authentication and authorization.

In a secure setup kerberized cluster that can be handled through KNOX. Personally I have not done that, having said that blue prints resolve the tedious administration of initial cluster setup.

Below is a link that could inspire you.

Dynamically Add Hosts to a Cluster with Blueprints

You had earlier asked an initial question which I think I replied to could you reward the best answer for your previous question as this is a new question. This ensure people can take time to respond and feel gratified if their answer help a member.

[#3]

@Geoffrey thank you so much , I will learn this , the second option to change the values of the parameters by using API , each service has the relevant parameters , for example lets take the YARN service and the relevant parameters and values - is it possible by API command to change the parameters values for example - YARN service ? , can you please give me example for that? , I searched in google but not see relevant ideas about this -:(

[#4 · Accepted solution]

@uri ben-ari

Setup YARN HA for example