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![Highly Available Drupal
on a Raspberry Pi Cluster
Jeff Geerling, php[tek] 2016
(geerlingguy)
http://www.shockinglydelicious.com/dorothys-fresh-raspberry-pie-recipe/](https://image.slidesharecdn.com/highlyavailabledrupalonaraspberrypicluster-160525221621/85/Highly-available-Drupal-on-a-Raspberry-Pi-cluster-1-320.jpg)
![Highly Available Drupal
on a Raspberry Pi Cluster
Jeff Geerling, php[tek] 2016
(geerlingguy)
http://www.shockinglydelicious.com/dorothys-fresh-raspberry-pie-recipe/](https://image.slidesharecdn.com/highlyavailabledrupalonaraspberrypicluster-160525221621/75/Highly-available-Drupal-on-a-Raspberry-Pi-cluster-1-2048.jpg)
Uploaded byJeff Geerling
Highly available Drupal on a Raspberry Pi cluster
The document discusses the feasibility of running a highly available Drupal setup on a Raspberry Pi cluster. It covers various challenges such as redundancy, microsd card reliability, and database backup, as well as benchmarks for performance and power consumption. Lessons learned emphasize testing changes incrementally and acknowledging network reliability issues.
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Highly available Drupal on a Raspberry Pi cluster
- 1. Highly Available Drupal ona Raspberry Pi Cluster Jeff Geerling, php[tek] 2016 (geerlingguy) http://www.shockinglydelicious.com/dorothys-fresh-raspberry-pie-recipe/
- 2.
- 3. The Big Question Canyou run a Fortune 500 website in your basement?
- 4.
- 5. Gateway 2000 486PC, RedHat Linux 6 1999
- 6. Whistle Interjet, runningFreeBSD 4
- 7. Raspberry Pi 1model B
- 9.
- 10. Problems with onePi • No redundancy
- 11. Problems with onePi • No redundancy • microSD card reliability
- 12. Problems with onePi • No redundancy • microSD card reliability • No database backup
- 13. Problems with onePi • No redundancy • microSD card reliability • No database backup • Limited resources
- 14. • No redundancy •microSD card reliability • No database backup • Limited resources High Availability Single Pi Multi Pi
- 15. • Easy redundancy•No redundancy • microSD card reliability • No database backup • Limited resources High Availability Single Pi Multi Pi
- 16. • Easy redundancy •Can hot-swap a Pi • No redundancy • microSD card reliability • No database backup • Limited resources High Availability Single Pi Multi Pi
- 17. • Easy redundancy •Can hot-swap a Pi • Hot database backup • No redundancy • microSD card reliability • No database backup • Limited resources High Availability Single Pi Multi Pi
- 18. • Easy redundancy •Can hot-swap a Pi • Hot database backup • Each server optimized • No redundancy • microSD card reliability • No database backup • Limited resources High Availability Single Pi Multi Pi
- 19.
- 22. CPU 20 cores/ 6 GHz RAM 5 GB Storage 80 GB microSD Network 10/100 over Gig www.pidramble.com Raspberry Pi Cluster
- 24. Problem How do youwrangle all these Pis?
- 25. “Configuration management forhumans.”
- 26. “Configuration management forhumans.” ___________ < And cows! > ----------- ^__^ (oo)_______ (__) )/ ||----w | || ||
- 27.
- 29.
- 30. How did itdo?
- 31. Benchmarks Benchmark Standard Uptime 99.95% Maxpage loads/sec 1000 Power Consumption 0.5 Gflops/watt
- 32. Benchmarks - Uptime (asmeasured by Server Check.in)
- 33. Benchmarks - Performance Nginx,Cached Page 3160 req/s Drupal, Cached Page 34 req/s Drupal, Uncached Page 12 req/s For comparison: • My MacBook Air: 6x faster • DigitalOcean droplets: 10x faster
- 34. Benchmarks - Power RaspberryPi 3 260 mA Raspberry Pi 2 220 mA Raspberry Pi Zero 80 mA (power draw at idle)
- 35. Benchmarks - Power RaspberryPi 2 0.15 Gflops/watt For comparison: • Core i7: 0.5 Gflops/watt Source: http://www.phoronix.com/scan.php?page=article&item=raspberry-pi-burst&num=3
- 36.
- 37. Go Small orGo Home
- 39.
- 40. Lessons Learned Test onechange at a time. Rinse and repeat.
- 41. Lessons Learned Networks arealways reliable.
- 42. Lessons Learned Networks arealways reliable. NEVER!
- 43. The Big Question Canyou run a Fortune 500 website in your basement?
- 44. Resources • www.pidramble.com • JeffGeerling's Blog • Win the Pi Zero! Subscribe on www.ansiblefordevops.com