GlusterFS expert needed for setup

I am in a great hurry so here is an easy job for a GlusterFS expert: I need to setup a GlusterFS on CentOS 7 and try some features. So tell me how to do this: Setup a cluster with GlusterFS (newest stable 7.6) with three machines serving one volume. SELinux should be enabled (if possible). For the start every machine has one brick (= one whole disk) for the volume. Tell me the exact ports to open on the machines. I do NOT want to open all ports for the involved machines. Only the needed! Show me how to access/mount this volume from a different CentOS 7 machine. Now add a few bricks (by adding a new disk/brick) for letting the volume grow on the fly. Add a new machine to the cluster for letting the volume grow on the fly. Now do a snapshot! Tell me how to access the snapshotted volume (for a consistent backup). (Show me how the bricks/volume must be created for allowing this!) Are there limitaions in volume growing while snapshot is active? e.g. LVM has this 'problem'. Are snapshots read only or are they writeable? (Like with btrfs?) Are incremental snapshots possible? (Like with btrfs?) How do I remove the snapshot? What exactly is snapshotted? Everything 'only' currently written on the disk or also the content of the filesystem cache? 8And where is that documented? Or is the behaviour just an assumption of yourself?) (In case: How do I make sure the content of the filesystem cache is on the disk? (Do I have to use sync?)) In the above setup the volume will be corrupt/not available if one of the machines are crashing, right? So show me how to setup a system where two machines are allowed to crash and the volume is still usable. Do this by 'Distributed Replicated' AND 'Distributed Dispersed'. And also show me how to grow the volume in this situation. By adding new disks and also by adding a new machine. (The machines in my environment are only able to have 4 additional disks with max. 2TB each disk. So what makes more sence to get the max. volume size? 'Distributed Replicated' or 'Distributed Dispersed'?) And also show me how to do a snapshot in that environments if it differ from the first one. And after a machine crashes. How do I remove that machine from the cluster and add a new one or how to add this broken machine again and sync it? What kinds of monitoring does GlusterFS have? E.g. Do I see which machine is missing? Do I see the state of volume/replication/dispersion? Because you will not get access to my machines I need you to show me the info by text e.g.: ================= You have [login to view URL] gluster-1 [login to view URL] gluster-2 1. setup software On gluster-1, gluster-2, gluster-3: yum install ... gluster-1, gluster-2, gluster-3: [login to view URL] .... [login to view URL] .... lvm create... gluster-3: gluster peer probe server1 [...] ================= Something like this. Yes you can send me a some part and I will try out on my machines and ask if I still have questions and then we will go on... I am really in a great hurry. This must be done this weekend. Best is to start as soon as possible. If you don't have the time for doing this right now do not bid!