On 2014-10-09, Jason T. Slack-Moehrle <slackmoehrle at gmail.com> wrote: > > I need to keep 2 systems identical. Mostly e-mail directories, web > directories, mysql, etc. The goal here is to have a 2nd system ready to go > it the first one starts to exhibit hardware issues. > > What are options to have this happen? I'm going out on a limb and thinking > rsync but I haven't used it past just simple use cases. You can try lsyncd. https://code.google.com/p/lsyncd/ It's basically a daemon monitoring inotify events and sending them to an rsync, so it can keep things up to date more easily. (I have never used it myself, so caveat emptor.) --keith -- kkeller at wombat.san-francisco.ca.us