High Availability Linux with Software RAID
Using a combination of software RAID and a recovery CD, a high availability Linux server can be set up and configured easily. It is conceivable that a drive could fail, putting the RAID into degraded mode, without the system administrator knowing immediately. A cron job could be created to periodically examine the /proc/mdstat file and send an e-mail or page if the RAID volumes were found to be in degraded mode.
After testing with VMware, I used the same technique outlined above to install Red Hat 8.0 on my physical machine. I also went through the same testing procedure on the physical machine, including failing a pure RAID drive, failing the first mixed RAID and native drive, restoring RAID volumes in degraded mode, booting of the recovery CD, rebuilding the native partition and installing the boot loader on the MBR. It worked flawlessly, and my system has been reborn as an HA server.
Webinar: 8 Signs You’re Beyond Cron
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- Initializing and Managing Services in Linux: Past, Present and Future
- Dr Hjkl on the Command Line
- Goodbye, Pi. Hello, C.H.I.P.
- Using Hiera with Puppet
- Enter to Win Archive DVD + Free Backup Solution
- Gartner Dubs DivvyCloud Cool Cloud Management Vendor
- Mumblehard--Let's End Its Five-Year Reign
- Infinite BusyBox with systemd
- It's Easier to Ask Forgiveness...
- Urgent Kernel Patch for Ubuntu