RE: fastest way to duplicate production server?

From: Darren Pilgrim (dmp_at_bitfreak.org)
Date: 07/13/05

  • Next message: Gustavo A. Baratto: "Re: fastest way to duplicate production server?" 
    To: "'RC'" <rubbishcollector@yahoo.com>, <freebsd-isp@freebsd.org>
Date: Tue, 12 Jul 2005 15:06:37 -0700

    From: RC <rubbishcollector@yahoo.com>
    >
    > We have a production FreeBSD 4.10 server running old versions
    > of Apache/MySQL/PHP from ports. We'd like to upgrade
    > Apache/MySQL/PHP to the latest versions. Before upgrading
    > we'd like to test on a test box.
    >
    > What's the fastest way of duplicating the existing
    > Apache/MySQL/PHP (including user databases)? (The production
    > server cannot go down for more than a few seconds.)

    Make per-filesystem back-ups of everything excluding those files opened
    read-write by whatever services you're running (ignore log files). Use
    nice to run the backup at a priority low enough to not usurp resources
    from the production services. Stop whatever services are running. Use
    fstat to make sure the excluded files are closed. Make a backup of the
    files excluded from the first backup run (again, ignore logs). Restart
    whatever services you stopped.

    If you can get away with it, flip the volumes read-only before doing the
    backup, it can make things just a little bit faster.

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  • Next message: Gustavo A. Baratto: "Re: fastest way to duplicate production server?"

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