Which server files should I backup?

    I am running a daily file based backup of a ubuntu linux vserver.
    On the server is running a i-mscp installation.


    Which directories and folders should be secured in any case. What files and directories can be omitted easily?


    so far I only backup the following files


    /var
    /usr
    /etc
    /opt


    Thank you!

    for a imscp specific backup, which can be restored on any debian or ubuntu server that is compatible with imscp (to restore, copy back the folders, import mysql dump, run imscp setup)
    /var/www/virtual
    /var/mail/virtual
    /etc/imscp
    mysql dump (or /var/lib/mysql while backing up a dump is more flexible)
    /var/cache/awstats


    for a full backup, which can be restored on same machine with exactly same linux version
    backup /
    and exclude /dev /proc and /tmp


    of course the full backup can be also restored with manual interaction on another server (copying back only needed folders)

    Edited once, last by flames ().