Continuous Deployment at Spreaker

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Information about Continuous Deployment at Spreaker

Published on February 14, 2014

Author: pracucci



Continuous Deployment on AWS EC2 made easy with Fabric and Zonify.

Continuous Deployment at Marco Pracucci

Platform for Creating and Sharing Audio 8 people (4 developers) 2M unique listeners / month 3.5M audio tracks created 500 reqs / sec

We run 80% of our traffic on AWS about 60 EC2 instances and 50TB on S3

We deploy frequently [even on friday] 51 deploys in last 30 days

How we deploy the web [php] app in 90 seconds

Deploy task

code repository 1. ssh fab www.deploy EC2 instances

code repository 2. checkout fab www.deploy EC2 instances

code repository Checklist - local cache warmup 3. warmup - db schema migrations fab www.deploy - check consistency EC2 instances

code repository 4. switch code fab www.deploy everything ok? EC2 instances

code repository Checklist - iptables --dport 80 -j DROP - ln -sfn /var/www/new /var/www/curr 4. switch code - clear bytecode cache fab www.deploy - iptables --dport 80 -j ACCEPT EC2 instances

notify team on IRC generate report fab www.deploy

which instances to deploy? we do auto-scaling, they change dinamically

we exploited DNS

Split infrastructure into roles EC2 instances www1 api1 worker1 api2 www2 { worker2 { www3 { api3 role: api role: web role: worker-web

Tag each instance with roles [space separated roles for multi-role instances]

Map names and roles to DNS Creates Route 53 DNS entries for all instances and roles

Address a single instance

Address instances by role

Easy to integrate with fabric

Do you remember the starting point? Internally does fab -R web www.deploy

few good reasons Easy, Fast, Robust

few good reasons Easy, Fast, Robust Warning: an attacker can easier get your instances IPs (use an unguessable DNS zone name)

Thank you @pracucci

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