Post on 23-Jan-2018
transcript
DOCKER AS A MULTITOOLMARTIN SEREINIG
DOCKER AS A MULTITOOL
AGENDA
▸ What’s Usersnap?
▸ A short history of web application complexity
▸ Devops with Docker
▸ Devops with Docker
▸ Random Docker
▸ Lessons learned
WHAT’S USERSNAP
USERSNAP
▸ Very honored to be a sponsor today
▸ SaaS company
▸ Visual bug tracking & feedback: Usersnap
▸ Established 2013, located in Linz
▸ Over 1000+ customers from all over the world
▸ Currently 15+ employees
WE ARE HIRING!
A SHORT HISTORY OF WEB APPLICATION COMPLEXITY
A SHORT HISTORY OF WEB APPLICATION COMPLEXITY
A SHORT HISTORY OF WEB APPLICATION COMPLEXITY
A SHORT HISTORY OF WEB APPLICATION COMPLEXITY
A SHORT HISTORY OF WEB APPLICATION COMPLEXITY
A SHORT HISTORY OF WEB APPLICATION COMPLEXITY
A SHORT HISTORY OF WEB APPLICATION COMPLEXITY
A SHORT HISTORY OF WEB APPLICATION COMPLEXITY
A SHORT HISTORY OF WEB APPLICATION COMPLEXITY
▸ Content Delivery Network
▸ Payments
▸ Sending Email
▸ Logging / Monitoring
▸ Storage
▸ Backups
A SHORT HISTORY OF WEB APPLICATION COMPLEXITY
THAT’S NOT EVEN ALL!
DEVOPS WITH DOCKER
DEVOPS WITH DOCKER
DOCKER 101
▸ Docker
▸ Really lightweight VMs
▸ Images are classes, Containers are instances
▸ docker-compose
▸ Orchestrate multiple containers
▸ Configure through one file
DEVOPS WITH DOCKER
(DEVOPS) REALITY IN A STARTUP ENVIRONMENT
▸ not a lot of people
▸ everybody wears a lot of hats
▸ time is the most valuable resource
▸ there is no IT department
DEVOPS WITH DOCKER
OPS WITH DOCKER: GOALS
▸ Be able to run it all
▸ … reliably
▸ … and keep it running
▸ Fast and easy provisioning
▸ Easy scaling
▸ Save Time
DEVOPS WITH DOCKER
OPS WITH DOCKER: IMPLEMENTATION
▸ Nothing but the core competency
▸ Use what you know
▸ Docker host machines run on standard Linux
▸ Docker to build frontend application
▸ Deploy containers for the backend
▸ We’re on AWS, but it does not really matter!
DEVOPS WITH DOCKER
❌
❌ ❌
❌
DEVOPS WITH DOCKER
CONTINUOUS INTEGRATION
▸ Codeship connected to repository
▸ Every push triggers: linting, testing, …
▸ Push in master triggers staging build + deploy
▸ Push with release tag triggers release build
▸ Manual deploy
DEVOPS WITH DOCKER
SCALING
▸ Vertically
▸ Horizontally
▸ Provision new application servers with Ansible
▸ Deploy to new application server
▸ Add to load balancer
▸ Very quick. Could even be automated through API calls
DEVOPS WITH DOCKER
DEVOPS WITH DOCKER
DOCKER IN DEVELOPMENT: PROBLEM
▸ Remember the diagram from before?
▸ Dev environment as similar to production as possible
▸ Different versions of software, configuration locations, …
▸ People run different operating systems
DEVOPS WITH DOCKER
DOCKER IN DEVELOPMENT: SOLUTIONS
▸ Use a different environment than in production?
▸ Have a development server with everything installed?
▸ Run everything locally?
DEVOPS WITH DOCKER
DOCKER IN DEVELOPMENT
▸ Install Docker
▸ Install git
▸ git pull
▸ docker-compose up
▸ ☕
▸ Start working
RANDOM DOCKER
"I SUPPOSE IT IS TEMPTING, IF THE ONLY TOOL YOU HAVE IS A HAMMER, TO TREAT EVERYTHING AS IF IT WERE A NAIL."
Abraham H. Maslow
RANDOM DOCKER
RANDOM DOCKER
USERSNAP BLOG
▸ Wordpress, MySQL, Optimus Cache Prime, Backup
▸ Dockerized!
▸ Data stored through volume mount
RANDOM DOCKER
APPLICATION DEMO PROJECT
▸ Did I mention we are hiring?
▸ Applicants make a little demo project
▸ Can choose their tools
▸ Different people will look at the project
▸ Dockerized!
RANDOM DOCKER
ANALYTICS SCRIPTS
▸ People do reporting, etc.
▸ Not necessarily developers
▸ Dockerized!
RANDOM DOCKER
WORDPRESS PLUGIN
▸ Wordpress Plugin to integrate Usersnap
▸ Dockerized!
▸ MySQL, Wordpress stock images
▸ Plugin is linked into plugin folder
RANDOM DOCKER
BUILDING OUR HOMEPAGE
▸ Static page build with Hugo
▸ Again: Not only developers make changes
▸ Dockerized!
RANDOM DOCKER
RESISTANCE IS FUTILE!
LESSONS LEARNED
DEVELOPMENT ENVIRONMENT IS A VERY GOOD START.
LESSONS LEARNED
ALWAYS USE DOCKER-COMPOSE!
LESSONS LEARNED
USE DOCKER VOLUMES TO LINK FILES AND PERSIST DATA.
LESSONS LEARNED
BASH (OR WHATEVER INTERACTIVE COMMAND) INTO A RUNNING CONTAINER
LESSONS LEARNED
USE A DOCKER-COMPOSE .ENV FILE TO SET A COMPOSE PROJECT NAME
LESSONS LEARNED
MAC AND WINDOWS: MEH.
LESSONS LEARNED
(OR IS IT?)
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