Stop service
Some maintenance procedures require you to stop a single service while keeping other services on the grid node running. Only stop individual services when directed to do so by a maintenance procedure.
You have the Passwords.txt file.
When you use these steps to "administratively stop" a service, Server Manager will not automatically restart the service. You must either start the single service manually or restart Server Manager.
If you need to stop the LDR service on a Storage Node, be aware that it might take a while to stop the service if there are active connections.
- 
Log in to the grid node:
- 
Enter the following command:
ssh admin@grid_node_IP - 
Enter the password listed in the
Passwords.txtfile. - 
Enter the following command to switch to root:
su - - 
Enter the password listed in the
Passwords.txtfile. 
When you are logged in as root, the prompt changes from
$to#. - 
 - 
Stop an individual service:
service servicename stopFor example:
service ldr stop
Services can take up to 11 minutes to stop.  - 
Log out of the command shell:
exit