Currently, I'm running the IT for a small organization, and we just purchased a new server to replace our aging Dell poweredge. As the Dell isn't so bad as to be junk, I was hoping to set up Xen on the new server, then convert the old to be a failover target through Xen Remus. However, I have been completely unable to get the remus tool on our new server. I've tried the following:
*CentOS 5.5, stock, and with compiling Xen from source for a custom 2.6.32 kernel (encountered an error we couldn't debug during boot when attempting to use custom kernel)
*Debian 6.0
*Ubuntu 10.04 (non-mainline Xen packages)
I've managed to get the dom0 running on all of them, but none of the versions that have run have had Remus.
Does anyone know of a tutorial that encompasses setting up Remus from the ground up, or know what OS I could use as a dom0 that would include remus with a xen package? So far, I have not found any resources related to Remus that start prior to having the tool already installed.
Best Answer
I found another answer to this on the XEN-WiKi which describes the process.
To me it looks not real stable and good for production use in its current state.
There were some hints in the above link that some parts of it will be within the standard Linux 3.4 mainstream-kernel, and even the project's home page says that it is still "young".
But this looks really interesting.
In the meantime I do my session-replication stuff with application-means. So my hot-standbys can take over without having to replicate a full machines state (including all disk and RAM memory).