I'm considering about the configuration of Deployment Server (and Client).
How long does Deployment Client continues to poll to Deployment Server
when we stop the deployment server or get some clients off the list in serverclass.conf ?
Clients poll eternally ? or stop to poll in some time ?
Can I change that time ?
Behavior is different in different versions, but the clients should continue to poll forever, so when the deployment server comes back up, they will connect and get the new configurations. This is a good thing, otherwise you would have to go restart all of your forwarders manually after configuration change.
Also, you can edit all of the serverclass.conf while the deployment server is running. It won't re-read the configuration until you do a reload deploy command or restart the deployment server, which should take no more than 1 minute.
You can change the time interval for your deployment clients (and you should set that in an app controlled by DS so you can change it at will)
see docs on deploymentclient.conf