Docker for php developers
PHP Developers meet #15
Jan 16, 2016
Prashant Shrestha
YoungInnovations
About me
- Prashant Shrestha
- VP, Business and Technology Innovations, YoungInnovations
- Co-founder, YoungInnovations
prash.shrestha@gmail.com
prashant_sh
Topics
- Introduction and Challenges
- Introduction to Container and it's underlying technologies
- Components of Docker
- Structure of a php application under docker
- Live Demo
The Challenge
How it used to be
Along came Virtualization
What is Virtualization
Introducing Containers
How Containers work
- Kernel Namespaces
- Control Groups (cgroups)
- Union file systems (aufs, vfs, DeviceMapper)
Kernel Namespaces
This provides a layer of isolation: each aspect of a container runs in its own namespace and does not have access outside it.
Kernel Namespaces
Kernel Namespaces
Kernel Namespaces
Control groups (cgroups)
Control groups allow containers to share available hardware resources and, if required, set up limits and constraints
Union file systems
Docker provides an integrated technology suite that enables development and IT operations teams to build, ship, and run distributed applications anywhere.
Docker Architecture
Docker uses a client-server architecture. The Docker client talks to the Docker daemon, which does the heavy lifting of building, running, and distributing your Docker containers
Docker images
A Docker image is a read-only template which is used to launch Docker containers.
How to build your own images
- Docker commit
- Dockerfile
Docker containers
A Docker container holds everything that is needed for an application to run. Each container is created from a Docker image.
Container Layer
Service oriented architecture
Each service runs within a container
Why use docker?
- Isolation
- Scalable
- Portable
- Lightweight
- Fast
Docker workflow and patterns
Single App Container
Not Recommended
Container Groups
Separate Containers
Multiple PHP Projects
