Talk on PHP Day Uruguay about Docker

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Docker From basics to orchestration

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About me

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Overview

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Overview ● Environment issues ● Virtualization ● "Containerization" ● Docker ○ Install ○ Run ○ Build ○ Host ● Docker Machine ● Docker Compose ● Questions

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Environment Issues

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If you do this, you don't receive your: Environment Issues

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Examples: ● substr vs mb_substr functions Environment Issues

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Environment Issues Examples: ● substr vs mb_substr functions ● short open tag

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Environment Issues Examples: ● substr vs mb_substr functions ● short open tag

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Environment Issues Examples: ● substr vs mb_substr functions ● short open tag

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Virtualization

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● 1960 - cpu time sharing (inspiration) Virtualization - History

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Virtualization - History ● 1960 - cpu time sharing (inspiration) ● IBM 370 - Designed for virtualization via software (CP/CMS).

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Virtualization - History ● 1960 - cpu time sharing (inspiration) ● IBM 370 - Designed for virtualization via software (CP/CMS). ● IBM z/VM - first success case (via hardware)

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Virtualization - History ● 1960 - cpu time sharing (inspiration) ● IBM 370 - Designed for virtualization via software (CP/CMS). ● IBM z/VM - first success case (via hardware) ● 1990+ - Hypervisors: VMWare, Xen, KVM, VirtualBox, etc...

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Virtualization - Hypervisors

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Virtualization - Stack

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Virtualization ● Standard environments

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Virtualization ● Standard environments ● Improve resources usage

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Virtualization ● Standard environments ● Improve resources usage ● Data recovery

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Virtualization ● If host hardware fails every VMs fail ● Standard environments ● Improve resources usage ● Data recovery

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Virtualization ● If host hardware fails every VMs fail ● Difficult troubleshooting ● Standard environments ● Improve resources usage ● Data recovery

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Virtualization ● If host hardware fails every VMs fail ● Difficult troubleshooting ● New layer = Some Overhead ● Standard environments ● Improve resources usage ● Data recovery

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Containers - LXC ● Since Jul/2008 - Kernel 2.6.26+

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● Since Jul/2008 - Kernel 2.6.26+ ● lxc-create, lxc- start, lxc-stop Containers - LXC

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Containers - LXC ● Since Jul/2008 - Kernel 2.6.26+ ● lxc-create, lxc- start, lxc-stop ● Shares kernel libs and binaries with host

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● Process isolation - 1 Linux PID (chroot) Containers - LXC

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Containers - LXC ● Process isolation - 1 Linux PID (chroot) ● Network isolation

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Containers - LXC ● Process isolation - 1 Linux PID (chroot) ● Network isolation ● Define memory limitation

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Containers - LXC ● Process isolation - 1 Linux PID (chroot) ● Network isolation ● Define memory limitation ● IO overhead - difficult to share host volumes with guests

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Docker

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Docker

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Docker

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● Copy on write (AUFS) Docker

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● Copy on write (AUFS) ● Logging (stdout, stderr, stdin) Docker

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● Copy on write (AUFS) ● Logging (stdout, stderr, stdin) ● Change management (imgs) Docker

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● Copy on write (AUFS) ● Logging (stdout, stderr, stdin) ● Change management (imgs) ● Automatic build (Dockerfile) Docker

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● Copy on write (AUFS) ● Logging (stdout, stderr, stdin) ● Change management (imgs) ● Automatic build (Dockerfile) ● Reusable (FROM: imagename) Docker

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● Copy on write (AUFS) ● Logging (stdout, stderr, stdin) ● Change management (imgs) ● Automatic build (Dockerfile) ● Reusable (FROM: imagename) ● Easy to share (registry - docker hub) Docker

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Docker ● Copy on write (AUFS) ● Logging (stdout, stderr, stdin) ● Change management (imgs) ● Automatic build (Dockerfile) ● Reusable (FROM: imagename) ● Easy to share (registry - docker hub) ● Private and public registry

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● API layer (REST) Docker

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Docker ● API layer (REST) ● Fast innovations (compose, machine, swarm, network)

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Docker Awesome

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Docker - Comparison

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Docker - Comparison ● Start realy fast

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Docker - Comparison ● Start realy fast ● Smaller images

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Docker - Comparison ● Start realy fast ● Smaller images ● Easy replication

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Docker - Comparison ● Start realy fast ● Smaller images ● Easy replication ● Better resources utilization

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Docker - Comparison ● Start realy fast ● Smaller images ● Easy replication ● Better resources utilization ● IO overhead

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Docker - Comparison ● Start realy fast ● Smaller images ● Easy replication ● Better resources utilization ● IO overhead ● Not too isolated

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Docker - Comparison ● Start realy fast ● Smaller images ● Easy replication ● Better resources utilization ● IO overhead ● Not too isolated ● Linux ONLY

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Docker - Quick Tips ● It's Container not a VM

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Docker - Quick Tips ● It's Container not a VM ● Why container - because it solves cargo transport matrix

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Docker - Quick Tips ● It's Container not a VM ● Why container - because it solves cargo transport matrix ● Why docker, because of docks

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Docker - Quick Tips ● It's Container not a VM ● Why container - because it solves cargo transport matrix ● Why docker, because of docks ● Images are states, Containers runs it

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● Go http://docs.docker.com/installation Docker - Install

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● Go http://docs.docker.com/installation ● Find you host OS Docker - Install

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● Go http://docs.docker.com/installation ● Find you host OS ● Follow the instructions Docker - Install

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● Go http://docs.docker.com/installation ● Find you host OS ● Follow the instructions ● FreeBSD hosts will be supported soon Docker - Install

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● Go http://docs.docker.com/installation ● Find you host OS ● Follow the instructions ● FreeBSD hosts will be supported soon ● MacOS and Windows needs a VM to act as a Host - boot2docker sugested Docker - Install

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Docker - Basics "Talk is cheap, show me the code." Linus Torvalds

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● Volume sharing ● Port expose/mapping ● Links between containers Docker - Medium

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Docker Machine Creates virtual machines ready to run docker locally or on the cloud.

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● Docker Compose (Old FIG) https://docs. docker.com/compose/install/ ● Crane - http://getcrane.com ● AZK - http://azk.io Orchestration

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Docker Compose

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Docker Compose

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● Docker Swarm Docker - Other Cool Stuff

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● Docker Swarm ● Docker Network Docker - Other Cool Stuff

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● Docker Swarm ● Docker Network ● OpenContainers - Linux Foundation Docker - Other Cool Stuff

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Slides Questions Evaluation