1. Failing at Scale
Chris Tankersley
@dragonmantank
Pacific Northwest PHP, September 2016
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2. I think something is wrong
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3. Problems with Distributed Applications
• Making sure that configurations are consistent
• Making sure that your code gets updated everywhere
• Actually finding errors
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4. I know this is a bug, but where?
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5. You Can’t Rely on Physical Files
• Servers/Containers Disappear
• How do you know where something happened?
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6. syslog
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Your Server
PHP Application
Monolog
syslog
Centralized syslog Server
syslog

7. Set up the Server
# /etc/init.d/syslog.conf, or something similiar
# Make sure the following is set
SYSLOGD="-r -m0"
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8. Set up the server
# /etc/syslog.conf, or something similiar
# Set up the log file locations
*.emerg /var/log/emergency.log
*.alert /var/log/alert.log
# Or lump them together
*.emerg /var/log/application.log
*.alert /var/log/application.log
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9. Set up the clients
# /etc/syslog.conf, or something similiar
# Send all log types of all log severities to a
# single server
*.* @<hostname|IP Address>
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10. Logging SaaS
• Same idea as a remote syslog
• Usually installs some log watching software
• Pretty interface for searching/looking at logs
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11. Loggly
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12. ELK Stack
• ElasticSearch, LogStash, Kibana
• Can run locally or through a SaaS service like logz.io
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13. Logz.io
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14. But I swear I fixed that bug!
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15. Don’t Trust Humans
We Suck
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16. Anything you do by hand, Automate
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17. Automating the Build Process
• Composer
• Grunt/Gulp/npm/asset pipelines
• Putting proper config files in place
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18. Track Everything
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19. Automating Code Pushes
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20. I’m pretty sure we have PHP… 5.6
installed?
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21. Remember, Don’t Trust Humans!
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22. Ansible
• Self contained and can be run from anywhere
• Very easy to get set up and running
• Lots of “playbooks”
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23. Puppet
• Master-Agent Setup
• Constantly checks to make sure machines are compliant
• You might be using it already!
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24. Vagrant Cookbook
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25. Thank You!
• https://github.com/dragonmantank
• Author of “Docker for Developers”
• https://leanpub.com/dockerfordevs
• http://ctankersley.com
• chris@ctankersley.com
• @dragonmantank
• https://joind.in/talk/64ad5
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