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Thread: KVM/Qemu hot failover on separate machine?

  1. #1
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    KVM/Qemu hot failover on separate machine?

    Hi,

    I'm trying to set up a multi-subnet network which will be largely on VMs, including the networking appliances but which will also have physical machines on it.

    What I want to do is have two or more KVM/Qemu hosts with multiple NICs in them. The NICs will be donated to router/firewall VMs. For safety, I want to duplicate the critical VMs (both networking-related and other) across the wire to the other host, so I have failover of the entire VM. I would configure critical networking components such that the entire system is contained in each VM, so if one host goes down I'm still up.

    I've never tried this on Linux-KVM. Is there somebody here who can make recommendations on how to proceed?

    Thanks.
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  2. #2
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    Ubuntu 12.04 Precise Pangolin

    Re: KVM/Qemu hot failover on separate machine?

    I don't know if this will do what you want, but it sounds like it will:
    https://pve.proxmox.com/wiki/High_Availability_Cluster

    Also here:
    http://ubuntuforums.org/showthread.php?t=1952485

    Last edited by CharlesA; January 10th, 2014 at 02:19 AM.
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  3. #3
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    Re: KVM/Qemu hot failover on separate machine?

    Wow.

    I guess I made an assumption that Proxmox was commercial software. My bad.

    Without having read the entire page, it appears that Proxmox is a contender. That second link takes it a bit further, and it's my scenario too.

    Thanks.
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  4. #4
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    Re: KVM/Qemu hot failover on separate machine?

    Quote Originally Posted by 1clue View Post
    I guess I made an assumption that Proxmox was commercial software. My bad.
    It kinda is. You can use the free version, which is what I use at home, or you could get a subscription that has some benefits over the free version.
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  5. #5
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    Re: KVM/Qemu hot failover on separate machine?

    Once you pointed it out, I paid more attention to the website than I had the first time through on my own. I had originally dismissed it as payware, and since this is a SOHO project I wasn't all that interested.

    Now I see it's sort of the Crossover/Wine type arrangement. Which is fine IMO.
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