Clustering RHEL 5.2 Server
My current project environment setup is having a single server, running on RHEL 5.2, that is constantly receiving incoming data (video and text) over a periodic interval e.g. every 30 minutes.
Initial in-house testing projected the server will be generally busy, so we decided to incorporate a second server for load balancing purposes.
So now, server A and B will need to be clustered. Once that is done, incoming data will balance out between the two server (or at least that is what I will like to achieve. Note, I'm aware that at the switch side, I'll need to do some additional configuration and that part is covered).
I've been reading on Red Hat Cluster Suite and the Linux Virtual Server (LVS) seems the way to go. However, I noted that the LVS solution require at least a two-tier solution, and that would incur 3 additional servers instead of just 1.
So here's my questions:-
Sidenote: I'm currently looking at Ultra Monkey and will be trying out in a while. However, the project I'm doing would be rolled out to live site eventually, and my customer is kind of....particular. I'm just wondering if there's a software/application (that need to be purchased) and comes with support.
Thanks in advance.
Seems like Ultra Monkey also utilizes Load-Balancer servers on the front-end, with the real servers at the back-end. Again, this effectively increase my server count from 1 to 4. Is there any clustering solution for Linux that can do away with the front-end load-balancer servers??
I thought of an idea and was wondering if its possible. I've attached the image and will explain how I perceive it to work.
First and foremost, is there anything wrong with the above config (see attached)?
Secondly, a thought I had is when say a large file is transferred to 192.168.2.1, the switch does load-balancing so data is transferred to S1 and S2, targetting a directory define in the attached SAN volume. Will that file be reconstructed properly?
I'm guessing not since both server NIC cards are working independently. Just like to have a confirmation since I can't actually test this.
Beside that, I'm basically dry out of ideas. Hope someone has some suggestion soon. Thanks.
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