Docker from basics to orchestration (PHPConfBr2015)

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Docker From basics to orchestration

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Credits Special thanks to all the people who made and released these awesome resources for free: ◎ Presentation template by SlidesCarnival ◎ Photographs by Unsplash & Death to the Stock Photo (license) ◎ Dark wood background by The pattern library

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About Me

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Overview

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Overview ◎ Environment Issues ◎ Virtualization ◎ LXC ◎ Docker ○ features ○ demo ◎ Machine ◎ Orchestration ○ tools ○ demo ◎ Swarm ○ demo ◎ Q&A

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Environment Issues

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Environment Issues ◎ substr vs mb_substr functions

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Environment Issues ◎ substr vs mb_substr functions ◎ short open tags:

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Environment Issues ◎ substr vs mb_substr functions ◎ short open tags:

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Environment Issues ◎ substr vs mb_substr functions ◎ short open tags:

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Environment Issues ◎ substr vs mb_substr functions ◎ short open tags:

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Virtualization

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◎ 1960 - inspired by cpu time sharing Virtualization - History

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◎ 1960 - inspired by cpu time sharing ◎ IBM 370 - First instructions to support software virtualization, CP/CMS allow running more than one instance simultaneously Virtualization - History

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◎ 1960 - inspired by cpu time sharing ◎ IBM 370 - First instructions to support software virtualization, CP/CMS allow running more than one instance simultaneously ◎ IBM z/VM - First success case, all hardware were virtualized ◎ until nineties only client/server applications Virtualization - History

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Virtualization - Hypervisors

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Virtualization - Stack

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◎ Standard environment Virtualization - Pros & Cons

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◎ Standard environment ◎ Improve resources utilization Virtualization - Pros & Cons

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◎ Standard environment ◎ Improve resources utilization ◎ Easy data recovery Virtualization - Pros & Cons

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◎ Standard environment ◎ Improve resources utilization ◎ Easy data recovery ◎ If host fails all VMs crashes together Virtualization - Pros & Cons

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◎ Standard environment ◎ Improve resources utilization ◎ Easy data recovery Virtualization - Pros & Cons ◎ If host fails all VMs crashes together ◎ Troubleshooting more difficult

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◎ Standard environment ◎ Improve resources utilization ◎ Easy data recovery Virtualization - Pros & Cons ◎ If host fails all VMs crashes together ◎ Troubleshooting more difficult ◎ Increase overhead

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LXC - Linux Containers

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LXC - Linux Containers ◎ Exists since Jul/2008 - Kernel 2.6.26+

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LXC - Linux Containers ◎ Exists since Jul/2008 - Kernel 2.6.26+ ◎ Process isolation

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LXC - Linux Containers ◎ Exists since Jul/2008 - Kernel 2.6.26+ ◎ Process isolation ◎ Network isolation

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LXC - Linux Containers ◎ Exists since Jul/2008 - Kernel 2.6.26+ ◎ Process isolation ◎ Network isolation ◎ Memory limitation

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LXC - Linux Containers ◎ Exists since Jul/2008 - Kernel 2.6.26+ ◎ Process isolation ◎ Network isolation ◎ Memory limitation ◎ File system isolation

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LXC - Pros & Cons ◎ Good resources isolation

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LXC - Pros & Cons ◎ Good resources isolation ◎ Run as a process, a single PID is created

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LXC - Pros & Cons ◎ Good resources isolation ◎ Run as a process, a single PID is created ◎ Reuse host resources (libs, kernel)

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LXC - Pros & Cons ◎ Good resources isolation ◎ Run as a process, a single PID is created ◎ Reuse host resources (libs, kernel) ◎ Starts much more faster than VMs

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LXC - Pros & Cons ◎ Volume share are difficult to do ◎ Good resources isolation ◎ Run as a process, a single PID is created ◎ Reuse host resources (libs, kernel) ◎ Starts much more faster than VMs

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LXC - Pros & Cons ◎ Volume share are difficult to do ◎ Architecture failure may lead to chroot attack ◎ Good resources isolation ◎ Run as a process, a single PID is created ◎ Reuse host resources (libs, kernel) ◎ Starts much more faster than VMs

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LXC - Pros & Cons ◎ Volume share are difficult to do ◎ Architecture failure may lead to chroot attack ◎ IO overhead ◎ Good resources isolation ◎ Run as a process, a single PID is created ◎ Reuse host resources (libs, kernel) ◎ Starts much more faster than VMs

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LXC - Pros & Cons ◎ Volume share are difficult to do ◎ Architecture failure may lead to chroot attack ◎ IO overhead ◎ Run on Linux hosts only ◎ Good resources isolation ◎ Run as a process, a single PID is created ◎ Reuse host resources (libs, kernel) ◎ Starts much more faster than VMs

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DOCKER

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Docker

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Docker Doki =>

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◎ Portable Docker - Features

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◎ Portable ◎ Versionable Docker - Features

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◎ Portable ◎ Versionable ◎ Reusable Docker - Features

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◎ Portable ◎ Versionable ◎ Reusable ◎ Copy-on-write Docker - Features

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◎ Portable ◎ Versionable ◎ Reusable ◎ Copy-on-write ◎ Logging Docker - Features

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◎ Portable ◎ Versionable ◎ Reusable ◎ Copy-on-write ◎ Logging ◎ Image change management Docker - Features

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◎ Portable ◎ Versionable ◎ Reusable ◎ Copy-on-write ◎ Logging ◎ Image change management ◎ Automatic build Docker - Features

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◎ Portable ◎ Versionable ◎ Reusable ◎ Copy-on-write ◎ Logging ◎ Image change management ◎ Automatic build ◎ Easy to share Docker - Features

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Docker - Features ◎ Private and public registry

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Docker - Features ◎ Private and public registry ◎ Server-client architecture

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Docker - Features ◎ Private and public registry ◎ Server-client architecture ◎ Client consume engine API

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Docker - Features ◎ Private and public registry ◎ Server-client architecture ◎ Client consume engine API ◎ Orchestration tools (compose, swarm,volume networks)

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Docker - Features ◎ Private and public registry ◎ Server-client architecture ◎ Client consume engine API ◎ Orchestration tools (compose, swarm,volume networks) ◎ Always innovating

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Docker - VM Comparison

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Docker - Quick Tips ◎ It is a container not a VM

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Docker - Quick Tips ◎ It is a container not a VM ◎ Container images are like VM boxes

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Docker - Quick Tips ◎ It is a container not a VM ◎ Container images are like VM boxes ◎ Images are state, container runs it

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Docker - Install ◎ Follow instructions for your OS in http://docs. docker.com/installation

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Docker - Install ◎ Follow instructions for your OS in http://docs. docker.com/installation ◎ Several distros supported

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Docker - Install ◎ Follow instructions for your OS in http://docs. docker.com/installation ◎ Several distros supported ◎ Mac OS X and Windows needs a VM to act like a Docker host - Boot2docker

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Docker - Install ◎ Follow instructions for your OS in http://docs. docker.com/installation ◎ Several distros supported ◎ Mac OS X and Windows needs a VM to act like a Docker host - Boot2docker ◎ There is roadmap to run Linux container on FreeBSD host

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Docker - Beggining ◎ run ◎ pull ◎ commit ◎ push ◎ exec ◎ ps ◎ images ◎ inspect ◎ rm ◎ rmi

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“ Talk is cheap, show me the code. Linus Torvalds “

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pull commit push Docker - Images Dockerfile

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Docker - Improving ◎ Volume ○ list, create, inspect ◎ Port expose and port mapping ◎ Links between containers ◎ Network ○ list, create,inspect, connect

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Second Demo

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Docker - Machine ◎ Creates virtual machines ready to run docker locally or on the cloud. ◎ drivers available: ○ Amazon Web Services, Microsoft Azure, Digital Ocean, Exoscale, Google Compute Engine, Microsoft Hyper-V, OpenStack, Rackspace, IBM Softlayer, Oracle VirtualBox, VMware vCloud Air, VMware Fusion, VMware vSphere and Generic

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Docker - Orchestration ◎ Docker Compose (Old FIG)

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Docker - Orchestration ◎ Docker Compose (Old FIG)

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Docker - Orchestration ◎ Docker Compose (Old FIG)

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Docker - Orchestration ◎ Docker Compose (Old FIG) ○ Config file: docker-compose.yml ○ Run: docker-compose up

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Docker - Orchestration ◎ Docker Compose (Old FIG) ○ Config file: docker-compose.yml ○ Run: docker-compose up ◎ Crane - http://getcrane.com ○ Config file: crane.json or crane.yaml ○ Run: crane lift ◎ AZK - http://www.azk.io ○ Config file: Azkfile.js ○ Run: `azk agent start` and then `azk start`

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Third Demo

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Docker - Orchestration ◎ Docker Swarm ○ Orchestrate docker hosts ○ supports schedulers and node discovery services

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Last Demo

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Docker - Comming ◎ User namespaces ◎ Open Containers Initiative - by Linux Foundation: https://www.opencontainers.org/

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Voucher: php_conf2015 Q&A Slides http://bit.ly/phpconfbr2015