Deploy your application in a box - DPC2016

Transcript

1. Deploy your application in a box @willemjanz joind.in/talk/73636

2. Willem-Jan Zijderveld @willemjanz github.com/wjzijderveld

3. Don't wait till the last slide with questions

4. Deployment With the usual disclaimer

5. It works So why change it?

6. Can you deploy whenever you want?

7. Are you ever hesitant to deploy?

8. "We can't deploy, Robin is sick today"

9. Do users notice when you deploy?

10. Things break If you like it or not

11. Deployments fail • Network issues • Migrations • Broken configuration

12. Downtime

13. Missed revenue

14. Angry customers

15. Customers losing faith

16. Scared to deploy

17. Deployments get postponed

18. Reserving dedicated time to deploy

19. Deploying outside office hours...

20. So what would be a more optimal method?

21. Less humans

22. No sweat

23. More often

24. 0 downtime

25. Repeatable

26. Let's get started

27. Less humans Automate your deploy process to a single step

28. Possible deployment Migrate database Update code on server (FTP, SSH)

    Update code dependencies (composer,npm,bower) Clear cache Reload webserver

29. > ssh your-server.com > sudo su - > cd /var/www/

    > git pull > php composer.phar install > npm install > rm -rf app/cache/* > # Some permission commands > service php-fpm reload Example: before

30. Example: after > ssh deploy@your-server.com > ./deploy.sh * Pulling changes

    * Updating dependencies * Migrating database * Clearing cache * DEPLOYED NEW VERSION

31. No sweat Lose the fear of deploying

32. Testing

33. Seriously, test your code

34. New code should have tests

35. Legacy code? Test the critical parts - Unit tests for

    important (domain) logic - Functional tests - Monitor production

36. Continuous Integration

37. More often

38. Smaller changes

39. 6 month projects Deliver something every day Don't wait with

    deploying until your feature is ready and approved.

40. Short lived branches • Allows for rapid deployment • Prevents

    huge merge conflicts • Speeds up overall development

41. Feature toggles

42. Example: recommendations <?php // BasketController.php function actionBasket(User $user) { $basket

    = $this->getBasketOfUser($user); $response = ['basket' => $basket->toArray()]; if ($this->featureIsActive('recommendations')) { $response['recommendations'] = $this->getRecommendations($basket); } return new JsonResponse($response); }

43. Example: recommendations <?php // BasketController.php function actionBasket(User $user) { $basket

    = $this->getBasketOfUser($user); $response = ['basket' => $basket->toArray()]; if ($this->featureIsActive('recommendations')) { $response['recommendations'] = $this->getRecommendations($basket); } return new JsonResponse($response); }

44. Give some users access

45. Conditional toggle Check the context against the conditions of the

    toggle

46. Example: Conditional toggle <?php $toggle = new Toggle( 'recommendations', ['user_id'

    => GreaterThan(42)] ); $toggle->active(['user_id' => 21]); // true $toggle->active(['user_id' => 1337]); // false

47. Example: Conditional toggle <?php $toggle = new Toggle( 'recommendations', ['user_id'

    => GreaterThan(42)] ); $toggle->active(['user_id' => 21]); // true $toggle->active(['user_id' => 1337]); // false

48. Example: Conditional toggle <?php $toggle = new Toggle( 'recommendations', ['user_id'

    => GreaterThan(42)] ); $toggle->active(['user_id' => 21]); // true $toggle->active(['user_id' => 1337]); // false

49. Example: Conditional toggle <?php $toggle = new Toggle( 'recommendations', ['user_id'

    => GreaterThan(42)] ); $toggle->active(['user_id' => 21]); // true $toggle->active(['user_id' => 1337]); // false

50. Feature management GUI API Redis http://labs.qandidate.com/blog/2014/08/19/open-sourcing-our-feature-toggle-api-and-ui/

51. More often - Smaller iterations - Don't wait for the

    whole feature to complete - Make use of feature toggles

52. 0 downtime

53. Prepare your deployment

54. Deployment Webserver Application - version 1

55. Deployment Webserver Application - version 1 Application - version 2

56. Deployment Webserver Application - version 1 Application - version 2

57. Deployment Webserver Application - version 1

58. Deployment Webserver Application - version 1 Install code

59. Deployment Webserver Application - version 1 Install code Migrations

60. Deployment Webserver Application - version 1 Install code Migrations Warmup

    cache

61. Deployment Webserver Application - version 1 Install code Migrations Warmup

    cache Application - version 2

62. Deployment Webserver Application - version 1 Install code Migrations Warmup

    cache Application - version 2

63. Example /var /project /releases /20160608-1.0 /20160609-1.1 /current -> /var/project/releases/20160608-1.0

64. 0 downtime - Don't touch the current version - Abort

    when any of the steps fail - Make your migrations backwards compatible

65. Put it in a box

66. Repeatable

67. Environment independent

68. The box In it's simplest form: just a zip

69. Independent

70. Reusable On all environments

71. Some challenges

72. Filesystem

73. <!-- services.xml --> <services> <service id="uploader" class="AppBundle\Uploader"> <argument>/var/www/uploads/</argument> </service> </services>

74. Flysystem Abstract the filesystem - Makes it easier to test

    - Makes your code independent of the filesystem, f.e.: - Production uses S3 - Development uses local files

75. <!-- services.xml --> <services> <service id="uploader" class="AppBundle\Uploader"> <argument type="service" id="oneup_flysystem.private_filesystem"

    /> </service> </services>

76. # config.yml oneup_flysystem: adapters: private_s3: awss3v2: client: aws_s3_client bucket: %s3_private_files_bucket%

    filesystem: private: adapter: private_s3

77. <?php // Uploader.php function uploadAvatar($filename) { $stream = fopen($filename, 'r+');

    $this->filesystem ->writeStream('avatars/' . $filename, $stream); if (is_resource($stream)) { fclose($stream); } }

78. File is now at S3: bucket/avatars/filename. ext

79. Configuration

80. # config_prod.yml imports: - { resource: config.yml } doctrine: dbal:

    default_connection: default connections: default: driver: pdo_mysql host: 192.168.1.10 dbname: acme_prod user: acme_prod password: SuperSecure

81. What about staging and acceptance?

82. Give control to the environment

83. # config.yml imports: - { resource: parameters.yml } - {

    resource: parameters.php } doctrine: dbal: default_connection: default connections: default: driver: pdo_mysql host: %db.hostname% dbname: %db.name% user: %db.user% password: %db.password%

84. # config.yml imports: - { resource: parameters.yml } - {

    resource: parameters.php } doctrine: dbal: default_connection: default connections: default: driver: pdo_mysql host: %db.hostname% dbname: %db.name% user: %db.user% password: %db.password%

85. # config.yml imports: - { resource: parameters.yml } - {

    resource: parameters.php } doctrine: dbal: default_connection: default connections: default: driver: pdo_mysql host: %db.hostname% dbname: %db.name% user: %db.user% password: %db.password%

86. <?php // parameters.php $parameterMapping = [ 's3_private_files_bucket' => 'MYAPP_S3_PRIVATE_FILES_BUCKET', ];

    foreach ($parameterMapping as $parameter => $env) { if (false !== ($value = getenv($env))) { $container->setParameter($parameter, $value); } }

87. $_ENV['SYMFONY__*'] But those values get overwritten by parameters defined in

    config.yml / parameters.yml

88. PHP dot env https://github.com/vlucas/phpdotenv

89. <?php // web/index.php $dotenv = new Dotenv\Dotenv(__DIR__ . '/../'); $dotenv->load();

    Load .env # .env MYAPP_S3_PRIVATE_FILES_BUCKET=yourbucket

90. Building the box - Should be reusable - Eliminate hard

    dependencies on environment - Give control to the environment

91. Summary - Less manual steps, eliminate the humans - Lose

    the fear: test your stuff - Deploy more often, don't postpone - Deployment shouldn't cause downtime - A deployment should be repeatable

92. Other questions? @willemjanz Please leave some feedback! joind.in/talk/73636