Thank you for the answer, I have understood where define the layout but
unfortunately not how to do it.
In my case I should write a service to manage a Cassandra cluster
composed by:
- CASSANDRA_SEED: the master component with cardinality 1-3
- CASSANDRA_NODE: the slave component with cardinality 0+
And I want to disable the installation of a seed and a node on a same node.
How can I set the layout configuration?
Is the below example right?
'CASSANDRA_SEED': {"else": 0},
'CASSANDRA_NODE': {"else": 3}
Thank you for the support.
Bests.
Mauro
On 09/03/2016 18:20, Srimanth Gunturi wrote:
Hello,
To control the layout of components on the cluster, you would contribute your
logic to the stack_advisor.py script in the stack-version which contains your
service. For example NameNode placement wrt ResourceManager etc. can be seen at
https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/stacks/HDP/2.0.6/services/stack_advisor.py#L1392
Depending on the type of component (Master, Slave, Client) and its cardinality,
the component gets distributed in the layout by the stack-advisor.
Regards,
Srimanth
________________________________________
From: Mauro Cortellazzi <[email protected]>
Sent: Wednesday, March 09, 2016 4:12 AM
To: [email protected]
Subject: disable installation of different conponents of the same service on
the same node
Hi all, I'm developing a custom service for Ambari.
Is there a way to disable the installation of different components of
the same service on the same node?
For example prevent a slave component installation if a master component
of the same service is already configured on a single node of the cluster?
Thank you for your support.
Bests.
Mauro
