Ember.js, DevOps, and You - MadisonRuby 2016

My talk on Ember.js, DevOps, and You given at MadisonRuby 2016.

Transcript

1. Ember.js, DevOps, and You
   Iheanyi Ekechukwu
   Madison+Ruby 2016
   

   View Slide

2. Iheanyi Ekechukwu
   Software Engineer @
   DigitalOcean
   @kwuchu
   

   View Slide

3. Defining DevOps
   What exactly is DevOps?
   

   View Slide

4. DevOps?
   

   View Slide

5. View Slide

6. DevOps.
   

   View Slide

7. Development + Operations
   

   View Slide

8. DevOps is deploying.
   

   View Slide

9. DevOps is provisioning.
   

   View Slide

10. DevOps is versioning.
    

    View Slide

11. DevOps is complicated.
    

    View Slide

12. Automation is
    

    View Slide

13. Ember.js and DevOps
    What do Ember.js and DevOps have to
    do with one another?
    

    View Slide

14. View Slide

15. Ember-CLI-Deploy Plugins
    

    View Slide

16. An Ember-CLI-Deploy Plugin
    can implement up to 11 hooks
    

    View Slide

17. View Slide

18. So, it doesn’t just deploy.
    

    View Slide

19. Ember-CLI-Deploy can provision.
    

    View Slide

20. Ember-CLI-Deploy can build.
    

    View Slide

21. Ember-CLI-Deploy can deploy.
    

    View Slide

22. Ember-CLI-Deploy can manage releases.
    

    View Slide

23. Ember-CLI-Deploy
    

    View Slide

24. Ember-CLI-DevOps
    

    View Slide

25. Building a Plugin
    

    View Slide

26. Create the Ember addon and
    install the Ember-CLI-Deploy
    base plugin.
    STEP ONE
    

    View Slide

27. ember addon ember-cli-deploy-digitalocean
    

    View Slide

28. cd ember-cli-deploy-digitalocean
    npm install ember-cli-deploy-plugin --save
    

    View Slide

29. STEP TWO
    Manually deploy a Fastboot
    application, taking note of each
    action.
    (Provisioning, Deployment, etc.)
    

    View Slide

30. Let’s go through the steps.
    

    View Slide

31. Create a Droplet.
    

    View Slide

32. SSH into the droplet.
    

    View Slide

33. Install Nginx, Node, NPM, and
    Ember-Fastboot-Server on droplet
    

    View Slide

34. On local machine, build the
    Fastboot application.
    

    View Slide

35. SCP the built Ember
    application onto the droplet
    

    View Slide

36. On droplet, go to the uploaded
    app and run the Fastboot
    application.
    

    View Slide

37. Configure Nginx to proxy over the
    Fastboot’s server’s port and serve
    static assets.
    

    View Slide

38. Reload Nginx.
    

    View Slide

39. And you’re done.
    

    View Slide

40. STEP THREE
    Translate each recorded step
    into code.
    (Automation)
    

    View Slide

41. View Slide

42. Automation Problems
    and Solutions
    

    View Slide

43. PROBLEM
    How do I create a droplet for
    the user?
    

    View Slide

44. SOLUTION
    Use DigitalOcean’s API and
    create an Ember command
    that creates the droplet.
    

    View Slide

45. View Slide

46. export DO_ACCESS_TOKEN=
    

    View Slide

47. ember do:provision
    

    View Slide

48. View Slide

49. PROBLEM
    Installing all software
    dependencies on the droplet.
    (Provisioning)
    

    View Slide

50. WITHOUT FASTBOOT
    One package dependency.
    Web Server (NGINX) serves
    the static assets.
    

    View Slide

51. WITH FASTBOOT
    More dependencies. It’s not
    only NGINX. We now need
    Node, NPM, and Fastboot.
    

    View Slide

52. SOLUTION
    DigitalOcean Images and
    execution of commands via
    Node SSH2.
    

    View Slide

53. View Slide

54. this.conn = new SSHClient();
    this.sshConfig = {
    host: config.ipAddress,
    port: 22,
    username: config.dropletUsername,
    privateKey:
    require('fs').readFileSync(config.privateKeyPath),
    password: config.dropletPassword,
    passphrase: config.passphrase,
    };
    

    View Slide

55. willUpload: function() {
    var conn = this.conn;
    conn.on('ready', () => {
    conn.exec(‘sudo apt-get update -y; sudo apt-get
    upgrade -y; sudo apt-get install -y nginx gcc build-
    essential; rm /etc/nginx/sites-enabled/default', (err,
    stream) => {
    if (err) throw err;
    stream.on('data', (data) => {
    this.log('STDOUT: ' + data);
    }).on('end', (data) => {
    resolve();
    });
    })
    }).connect(this.sshConfig);
    })
    

    View Slide

56. PROBLEM
    How do I build my Ember
    application and get it onto the
    droplet?
    

    View Slide

57. SOLUTION
    Use ember-cli-deploy-build to
    build the application, NPM install
    dependencies, then SCP files
    onto the droplet.
    

    View Slide

58. View Slide

59. configure: function() {
    //…
    this.scpConfig = {
    host: config.ipAddress,
    port: 22,
    username: process.env.DROPLET_USERNAME || 'root',
    privateKey:
    require('fs').readFileSync(process.env.PRIVATE_KEY_DIR),
    password: process.env.DROPLET_PASSWORD,
    passphrase: process.env.PASSPHRASE,
    path: '/etc/nginx/sites-enabled/ember-app'
    };
    this.scpClient = SCPClient;
    },
    

    View Slide

60. willUpload: function(context) {
    var npmInstallTask = new NPMInstallTask({
    log: this.log.bind(this),
    distDir: context.distDir
    });
    return npmInstallTask.run()
    // more code down here
    }
    

    View Slide

61. upload: function(context) {
    this.log('Uploading assets to the droplet!');
    var scpClient = this.scpClient;
    return new Promise((resolve, reject) => {
    scpClient.scp(context.distDir, this.scpConfig, (err) => {
    if (err) {
    throw err;
    }
    //…
    return resolve();
    });
    });
    },
    

    View Slide

62. context.distDir
    

    View Slide

63. PROBLEM
    What if my droplet restarts
    and kills the Fastboot server?
    

    View Slide

64. SOLUTION
    Create a Fastboot Upstart
    Service on the droplet.
    

    View Slide

65. description "A job file for starting up the Fastboot service for Ember."
    author "Iheanyi Ekechukwu"
    start on filesystem or runlevel [2345]
    stop on shutdown
    pre-start script
    npm install -g ember-fastboot-server
    echo "Starting Fastboot server" >> /var/log/fastboot.log
    end script
    script
    export HOME
    echo $$ > /var/run/fastboot.pid
    exec ember-fastboot /etc/nginx/sites-enabled/ember-app >> /var/log/fastboot.log 2>&1
    end script
    pre-stop script
    rm /var/run/fastboot.pid
    echo "Fastboot Server Stopping" >> /var/log/fastboot.log
    end script
    

    View Slide

66. didUpload: function(context) {
    // other code…upload fast boot
    fileClient.upload('./node_modules/ember-cli-
    deploy-digitalocean/templates/fastboot.conf', '/
    etc/init/fastboot.conf', err => {
    if (err) {
    this.log(err, {color: 'red'});
    throw err;
    }
    // other code…
    });
    

    View Slide

67. PROBLEM
    How do I get the application
    up and served up to the user?
    

    View Slide

68. SOLUTION
    Upload a custom NGINX
    config and restart everything.
    

    View Slide

69. http {
    include /etc/nginx/mime.types*;
    default_type application/octet-stream;
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;
    server {
    listen 80;
    root /etc/nginx/sites-enabled/ember-app;
    index index.html index.html;
    server_name localhost;
    location / {
    index index.html;
    proxy_pass http://127.0.0.1:3000;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-NginX-Proxy true;
    }
    location ~ \.(ttf|ttc|otf|eot|woff|font.css|css)$ {
    add_header Access-Control-Allow-Origin "*";
    }
    location /assets {
    autoindex on;
    }
    }
    }
    

    View Slide

70. didUpload: function(context) {
    // upload nginx conf, other code left out
    fileClient.upload('./node_modules/ember-cli-deploy-digitalocean/
    templates/nginx.conf', '/etc/nginx/nginx.conf', (err) => {
    if (err) {
    this.log(err);
    throw err;
    }
    return resolve();
    });
    // other code…
    }
    

    View Slide

71. didUpload: function(context) {
    // restart nginx and fastboot service, other code left out
    conn.exec("sudo service nginx restart; sudo service fastboot
    restart;",
    (err, stream) => {
    if (err) throw err;
    stream.on('data', (data) => {
    this.log('STDOUT: ' + data);
    }).on('end', (data) => {
    this.log("We're in business!");
    return resolve();
    }).stderr.on('data', (data) => {
    this.log('STDERR: ' + data);
    });
    });
    }
    

    View Slide

72. And we’re done automating.
    

    View Slide

73. View Slide

74. One small NPM trick that
    makes building deploy plugins
    easier…
    

    View Slide

75. View Slide

76. g
    

    View Slide

77. View Slide

78. ember-cli-deploy-digitalocean
    (github.com/iheanyi/ember-cli-deploy-
    digitalocean)
    

    View Slide

79. Plugin Limitations
    

    View Slide

80. Deploys limited to one droplet.
    

    View Slide

81. Provisioning tasks get re-run
    unnecessarily.
    

    View Slide

82. No controlled release
    management.
    

    View Slide

83. Old Fastboot Serving Logic
    

    View Slide

84. Ideas for Future Enhancements
    

    View Slide

85. Zero Downtime Deployments
    

    View Slide

86. SSL Support?
    

    View Slide

87. Semantic Versioning
    (semantic-release)
    

    View Slide

88. The Future of DevOps?
    

    View Slide

89. View Slide

90. + ?
    

    View Slide

91. View Slide

92. Thanks to…
    @tomdale
    @lukemelia
    @davidpett
    @digitalocean
    and others!
    

    View Slide

93. Thank you.
    @kwuchu
    

    View Slide