An Adobe Commerce Architect is working on a multi-server horizontally
scaled Adobe Commerce on-premise installation. There are three nodes
up and running the Adobe Commerce installation: node A, node B, and
node C. A load balancer redirects traffic to each node evenly. The
Remote Storage module is enabled and set up with a private S3 bucket
to sync media between the nodes. The Architect wants to connect to the
cluster by SSH and enable the maintenance mode through the
maintenance:enablecommand. Which steps should the Architect take to
make sure all servers go into maintenance mode?
Log in to one of the running nodes and run the
maintenance:enablecommand. All nodes will then go into maintenance mode.Log in to each node individually and run the
maintenance:enablecommand on each individual node. The nodes will go into maintenance
one by one.Create a custom remote storage for the
var/.maintenance.flagfile to get synchronized between the nodes. Then log in to one of the nodes
and run themaintenance:enablecommand. All nodes will then go into
maintenance mode.
This is an AD0-E718 Adobe Commerce Architect Master Sample Question and the correct answer provided by Adobe(no explanation) is 1. But I think 3 is correct.
Can anybody tell me why 1 is correct?
Does the remote-storage module sync var/.maintenance.flag automatically, too?
Please also provide any reference/documentation if you can, thank you.