Server :: MySQL Connection Via Auxiliary Network Card

Dec 18, 2010

I'm dealing with two dedicated servers hosted at liquidweb. The basic idea is that one machine might not be enough to handle the traffic at launch so we have a second machine to shoulder the MySQL duties -- it seemed a natural way to divy up computation burdens.

The support staff at LW tells me that each machine has three network cards

1) Public-facing NIC through which all public visitors are served

2) NIC on LAN so that liquidweb can access the machine locally for maintenance and support

3) Third NIC so that the two machines can speak to each other rapidly on their own private network. Apparently the two machines are connected via crossover cable.

It's my understanding that machine 1 has IP of 192.168.0.1 on this third card and machine 2 has IP of 192.168.0.2 on its third card. For some reason, these machines cannot speak to each other using ping, telnet, ssh, http, or MySQL.

I've contacted tech support about this issue but was wondering how I might be sure that the MySQL traffic transits the third network card on each machine. I'm guessing that it's just a matter of using the third card's IP addresses but want to be sure. Is there any way to specify a NIC when connecting via MySQL?

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