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Pacific Northwest PHP, September 2016 1
Failing at ScaleChris Tankersley@dragonmantankPacific Northwest PHP, September 2016
Pacific Northwest PHP, September 2016 2
I think something is wrong
Pacific Northwest PHP, September 2016 3
Problems with Distributed Applications• Making sure that configurations are consistent• Making sure that your code gets updated everywhere• Actually finding errors
Pacific Northwest PHP, September 2016 4
I know this is a bug, but where?
Pacific Northwest PHP, September 2016 5
You Can’t Rely on Physical Files• Servers/Containers Disappear• How do you know where something happened?
Pacific Northwest PHP, September 2016 6
syslog
Your Server
PHP Application
Monolog
syslog
Centralized syslog Server
syslog
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Set up the Server# /etc/init.d/syslog.conf, or something similiar
# Make sure the following is setSYSLOGD="-r -m0"
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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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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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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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Loggly
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ELK Stack• ElasticSearch, LogStash, Kibana• Can run locally or through a SaaS service like logz.io
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Logz.io
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But I swear I fixed that bug!
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Don’t Trust Humans
We Suck
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Anything you do by hand, Automate
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Automating the Build Process• Composer• Grunt/Gulp/npm/asset pipelines• Putting proper config files in place
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Track Everything
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Automating Code Pushes
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I’m pretty sure we have PHP… 5.6 installed?
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Remember, Don’t Trust Humans!
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Ansible• Self contained and can be run from anywhere• Very easy to get set up and running• Lots of “playbooks”
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Puppet• Master-Agent Setup• Constantly checks to make sure machines are compliant• You might be using it already!
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Vagrant Cookbook
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Thank You!• https://github.com/dragonmantank• Author of “Docker for Developers”
• https://leanpub.com/dockerfordevs
• http://ctankersley.com• [email protected]• @dragonmantank
• https://joind.in/talk/64ad5
