My advice is don’t use IP addresses. Use the hostname of the main fog server - it’s easy to change a DNS record on your DNS server. Not so easy to change the IP address of thousands of clients.

Here is information on replication:
https://wiki.fogproject.org/wiki/index.php?title=Replication
https://wiki.fogproject.org/wiki/index.php?title=Location_Plugin

@george1421 said in When Does FoG push the Image VIA FTP to Location Node:

Replication should start soon as the imaging task is complete and the image is marked OK for replication. Replication will start.

The image replicator has a sleep setting here:
Web Interface -> FOG Configuration -> FOG Settings -> FOG Linux Service Sleep Times -> IMAGEREPSLEEPTIME

The default sleep time is 600 seconds, which is 10 minutes.

So the image replicator by default will begin replicating the image after capture completes anywhere from 0 to 10 minutes later.

I would not recommend the secondary server being a full server - this setup isn’t supported and things can get hairy - and there’s manual work involved - nowhere in the wiki is it documented - and I wouldn’t recommend it. Especially with the awesome new features for access control coming probably next release.

For more information about replication, see these two articles:
https://wiki.fogproject.org/wiki/index.php?title=Replication
https://wiki.fogproject.org/wiki/index.php?title=Location_Plugin