Talk on PHP Day Uruguay about Docker

Talk presented on the first PHP Day in Montevideo Uruguay about Docker from the basics to orchestration

Transcript

1. Docker From basics to orchestration
2. About me
3. Overview
4. Overview • Environment issues • Virtualization • "Containerization" • Docker ◦ Install ◦ Run ◦ Build ◦ Host • Docker Machine • Docker Compose • Questions
5. Environment Issues
6. If you do this, you don't receive your: Environment Issues
7. Examples: • substr vs mb_substr functions Environment Issues
8. Environment Issues Examples: • substr vs mb_substr functions • short open tag <?=
9. Environment Issues Examples: • substr vs mb_substr functions • short open tag <?= • short array syntax (5.3- vs 5.4+): $a=[];
10. Environment Issues Examples: • substr vs mb_substr functions • short open tag <?= • short array syntax (5.3- vs 5.4+): $a=[]; • some custom installed extension on dev but not on prod
11. Virtualization
12. • 1960 - cpu time sharing (inspiration) Virtualization - History
13. Virtualization - History • 1960 - cpu time sharing (inspiration) • IBM 370 - Designed for virtualization via software (CP/CMS).
14. Virtualization - History • 1960 - cpu time sharing (inspiration) • IBM 370 - Designed for virtualization via software (CP/CMS). • IBM z/VM - first success case (via hardware)
15. 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...
16. Virtualization - Hypervisors
17. Virtualization - Stack
18. Virtualization • Standard environments
19. Virtualization • Standard environments • Improve resources usage
20. Virtualization • Standard environments • Improve resources usage • Data recovery
21. Virtualization • If host hardware fails every VMs fail • Standard environments • Improve resources usage • Data recovery
22. Virtualization • If host hardware fails every VMs fail • Difficult troubleshooting • Standard environments • Improve resources usage • Data recovery
23. Virtualization • If host hardware fails every VMs fail • Difficult troubleshooting • New layer = Some Overhead • Standard environments • Improve resources usage • Data recovery
24. Containers - LXC • Since Jul/2008 - Kernel 2.6.26+
25. • Since Jul/2008 - Kernel 2.6.26+ • lxc-create, lxc- start, lxc-stop Containers - LXC
26. Containers - LXC • Since Jul/2008 - Kernel 2.6.26+ • lxc-create, lxc- start, lxc-stop • Shares kernel libs and binaries with host
27. • Process isolation - 1 Linux PID (chroot) Containers - LXC
28. Containers - LXC • Process isolation - 1 Linux PID (chroot) • Network isolation
29. Containers - LXC • Process isolation - 1 Linux PID (chroot) • Network isolation • Define memory limitation
30. Containers - LXC • Process isolation - 1 Linux PID (chroot) • Network isolation • Define memory limitation • IO overhead - difficult to share host volumes with guests
31. Docker
32. Docker
33. Docker
34. • Copy on write (AUFS) Docker
35. • Copy on write (AUFS) • Logging (stdout, stderr, stdin) Docker
36. • Copy on write (AUFS) • Logging (stdout, stderr, stdin) • Change management (imgs) Docker
37. • Copy on write (AUFS) • Logging (stdout, stderr, stdin) • Change management (imgs) • Automatic build (Dockerfile) Docker
38. • Copy on write (AUFS) • Logging (stdout, stderr, stdin) • Change management (imgs) • Automatic build (Dockerfile) • Reusable (FROM: imagename) Docker
39. • Copy on write (AUFS) • Logging (stdout, stderr, stdin) • Change management (imgs) • Automatic build (Dockerfile) • Reusable (FROM: imagename) • Easy to share (registry - docker hub) Docker
40. 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
41. • API layer (REST) Docker
42. Docker • API layer (REST) • Fast innovations (compose, machine, swarm, network)
43. Docker Awesome
44. Docker - Comparison
45. Docker - Comparison • Start realy fast
46. Docker - Comparison • Start realy fast • Smaller images
47. Docker - Comparison • Start realy fast • Smaller images • Easy replication
48. Docker - Comparison • Start realy fast • Smaller images • Easy replication • Better resources utilization
49. Docker - Comparison • Start realy fast • Smaller images • Easy replication • Better resources utilization • IO overhead
50. Docker - Comparison • Start realy fast • Smaller images • Easy replication • Better resources utilization • IO overhead • Not too isolated
51. Docker - Comparison • Start realy fast • Smaller images • Easy replication • Better resources utilization • IO overhead • Not too isolated • Linux ONLY
52. Docker - Quick Tips • It's Container not a VM
53. Docker - Quick Tips • It's Container not a VM • Why container - because it solves cargo transport matrix
54. Docker - Quick Tips • It's Container not a VM • Why container - because it solves cargo transport matrix • Why docker, because of docks
55. 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
56. • Go http://docs.docker.com/installation Docker - Install
57. • Go http://docs.docker.com/installation • Find you host OS Docker - Install
58. • Go http://docs.docker.com/installation • Find you host OS • Follow the instructions Docker - Install
59. • Go http://docs.docker.com/installation • Find you host OS • Follow the instructions • FreeBSD hosts will be supported soon Docker - Install
60. • 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
61. Docker - Basics "Talk is cheap, show me the code." Linus Torvalds
62. • Volume sharing • Port expose/mapping • Links between containers Docker - Medium
63. Docker Machine Creates virtual machines ready to run docker locally or on the cloud.
64. • Docker Compose (Old FIG) https://docs. docker.com/compose/install/ • Crane - http://getcrane.com • AZK - http://azk.io Orchestration
65. Docker Compose
66. Docker Compose
67. • Docker Swarm Docker - Other Cool Stuff
68. • Docker Swarm • Docker Network Docker - Other Cool Stuff
69. • Docker Swarm • Docker Network • OpenContainers - Linux Foundation Docker - Other Cool Stuff
70. Slides Questions Evaluation