PostgreSQL Setup Using Docker

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Gilt Senior Software Engineer Rangarajan Radhakrishnan delivered this talk at the New York City PostgreSQL User Group meetup on December 11, 2013, hosted by Gilt.

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PostgreSQL Setup Using Docker

  1. 1. PostgreSQL Setup Using Docker Rangarajan Radhakrishnan, ranga@gilt.com Infrastructure Engineering Dec 11, 2013
  2. 2. Introduction ● Docker is based on the Linux Container (LXC) ● containers can run on bare metal or VMs ● based on AuFS (union filesystem) ● inspired by efficiencies resulting from containerization in shipping
  3. 3. History ● Docker was created by Solomon Hykes (dotcloud) ● Released as open source in March 2013 ● support for Red Hat Linux variants announced in September 2013
  4. 4. Why Docker? ● creation of containers from any application ● containers are lightweight and easier to use (based on LXC) ● deployment is quick, and experimentation is easier ● vibrant and growing community
  5. 5. Docker Components ● registry (one or more) to publish Docker images ○ Docker image is a template ○ Docker container is an instance ● hosts where Docker containers can run (kernel 3.8 and lxc-docker package) ● Dockerfile for each type of container
  6. 6. Docker Workflow ● create Dockerfile ● build Docker image (publish to registry) ● Run a container using image ● refine Dockerfile (if needed) ● rinse and repeat
  7. 7. Some Containers built by community ● ● ● ● ● ● ● PostgreSQL Mongo Riak Cassandra Continuous integration Drupal (content management) Memcached (SaaS)
  8. 8. Docker at Gilt ● Introduced to Docker by Gilt Principal Systems Engineer Jonathan Leibiusky ● Hackathon in Dublin (Aug 2013) to experiment with Docker ● Work now underway to adopt it for both non-production and production environments
  9. 9. Docker Container for PostgreSQL Demo(s) ● Setting up Postgres ● Some Docker commands
  10. 10. Advantages of PostgreSQL container ● Provides an identical snapshot of most recent dev database(s) for all developers ● Developers can avoid dealing with setup and maintenance of development (or staging) databases ● Allows for quick testing: both app and database changes for some types of tests
  11. 11. References ● Docker wiki [http://en.wikipedia.org/wiki/Docker_ (software)] ● Docker getting started [https://www.docker.io/gettingstarted/] ● Dockerfile tutorial [http://www.docker.io/learn/dockerfile/]
  12. 12. Questions? Gilt tech blog: tech.gilt.com Twitter: @gilttech Facebook: facebook.com/gilttech
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