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.
Practical books for the most technical people on the planet. Newly available books include:
- Agile Product Development by Ted Schmidt
- Improve Business Processes with an Enterprise Job Scheduler by Mike Diehl
- Finding Your Way: Mapping Your Network to Improve Manageability by Bill Childers
- DIY Commerce Site by Reven Lerner
Plus many more.
- Handheld Emulation: Achievement Unlocked!
- Building a Multisourced Infrastructure Using OpenVPN
- Unikernels, Docker, and Why You Should Care
- Download "Linux Management with Red Hat Satellite: Measuring Business Impact and ROI"
- Happy GPL Birthday VLC!
- New Products
- diff -u: What's New in Kernel Development
- Controversy at the Linux Foundation
- February 2016 Issue of Linux Journal
- Non-Linux FOSS: Snk