Ian Lord wrote:
I need to setup a high-availability setup for mail/web setup
1 Server holding all the websites data and mail messages. It
would serve these files via nfs to the application servers.
It would also run mysql
A second server Also sharing it's content via nfs, replicating
it's data though rsync each ?? minutes. The mysql would run as a slave
of the primary
Both servers would be running apache, php, sendmail and posfix
and would serve content from the share nfs drive.
1- Is this a viable solution, I mean by that, Is it Like this big ISP
are set up ?
I don't know any of the answers for sure, but I'd bet they are both 'no'.
2- Is there a better way to replicate data than RSYNC (without going to
san of expensive hardware) ? If not, is there a hotsync feature (I mean
by that as soon as server A modify something, server B knows and
I guess so.
First of all, I don't really understand the need to have four server,
unless there is some point which you didn't tell us.
Apart from that, I guess it would be a lot better to try and sync at the
MySQL should support this and I bet you can find something alike on the
IMAP side (cyrus has that support, but I don't know how stable that is).
That leaves you with file system replication only for web sites, but
that should be ok as long as it's mostly read-only data.
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