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    Fault tolerant colocation setup

    Scheduled Pinned Locked Moved HA/CARP/VIPs
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    • S
      stevekez
      last edited by

      Hi everyone,

      I've been spending several hours reading up on various things so forgive me if I ask a question that has an obvious answer that I've missed!

      I'm investigating a colocation configuration that's as HA as possible.

      There will be multiple web servers for load balancing/HA purposes.

      From a network point of view I want two switches with all servers connected to both (2 NICs per server for most/all of the servers we have).

      I would like this to be coupled with a pair of pfSense setups so that if one of the routers fails it's not a problem.

      There'll be publicly routable IPs going to all servers but also a private network would be nice - the obvious fun here being that traffic for the private IPs will be running over the same interfaces as the public stuff.

      Is the kind of setup I describe possible and if so what things do I need to look at when configuring such a thing? If there are problems with the above description (such as LAG not working between multiple switches, as I've already identified as a potential gotcha  :-[), and somebody has a suggestion that delivers the same level of network/routing redundancy, be my guest!

      Many thanks,
      Steve.

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      • C
        cmb
        last edited by

        @stevekez:

        Is the kind of setup I describe possible and if so what things do I need to look at when configuring such a thing?

        That's one of the most common types of setups I help our support customers deploy. Works great. My presentation from DCBSDCon covered this type of setup. http://www.youtube.com/watch?v=aElQidbWUxA

        The book has a lot of content that goes over things you need to consider here.  http://pfsense.org/book

        @stevekez:

        If there are problems with the above description (such as LAG not working between multiple switches, as I've already identified as a potential gotcha  :-[),
        [/quote]

        Only lagg with bonding (LACP, EtherChannel) tends to be a problem there. The failover mode is what people generally use for their servers between switches like that.

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