Hi Di,

Existence of "Delete" button for a service is not stack driven.
Although on clicking delete action, UI asks end-user to first stop and delete 
any service that depends on "being deleted" service.
This logic is stack driven.

So when user tries to delete a zookeeper service, ambari-web will ask user to 
first delete other "many" services like HDFS, YARN, etc first since they are 
marked to require zookeeper service in their service definition.

Again these restrictions are stack driven but these are made by ambari-web 
client and so user can always use API to delete a service directly. In this 
case all "Delete Service" API checks is that no host component of service 
should be in running state.


-- Thanks
    Jaimin
________________________________________
From: Di Li <[email protected]>
Sent: Monday, February 06, 2017 1:43 PM
To: [email protected]
Subject: Can "Delete" button on Ambari UI be disabled ?

Hello folks,

Can "Delete" button on Ambari UI be disabled (via some stack service
configuration ) ?  For example, disable the Delete button for Zookeeper as
many services depend on it ?

Thanks.

Di

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