Hey @BrookDO sudo service ghost status returns ghost start/running, process 1755. Here is my config file.

// # Ghost Configuration
// Setup your Ghost install for various environments
// Documentation can be found at http://support.ghost.org/config/

var path = require('path'),
    config;

var AWS_ACCESS_KEY = process.env.AWS_ACCESS_KEY;
var AWS_SECRET_KEY = process.env.AWS_SECRET_KEY;



config = {
    // ### Production
    // When running Ghost in the wild, use the production environment
    // Configure your URL and mail settings here
    production: {
        url: 'http://www.testsite.com',
        mail: {},
        database: {
            client: 'sqlite3',
            connection: {
                filename: path.join(__dirname, '/content/data/ghost.db')
            },
            debug: false
        },

        server: {
            // Host to be passed to node's `net.Server#listen()`
            host: '127.0.0.1',
            // Port to be passed to node's `net.Server#listen()`, for iisnode set this to `process.env.PORT`
            port: '80'
        },

        storage: {
        active: 'ghost-s3',
        'ghost-s3': {
         accessKeyId: 'process.env.AWS_ACCESS_KEY',
         secretAccessKey: 'process.env.AWS_SECRET_KEY',
         bucket: 'ghost-blogpost-images',
         region: 'us-standard',
         assetHost: '//s3.amazonaws.com/ghost-blogpost-images/'
        }
        },

    },

    // ### Development **(default)**
    development: {
        // The url to use when providing links to the site, E.g. in RSS and email.
        // Change this to your Ghost blogs published URL.
        url: 'http://localhost:2368',

        // Example mail config
        // Visit http://support.ghost.org/mail for instructions
        // ```
        //  mail: {
        //      transport: 'SMTP',
        //      options: {
        //          service: 'Mailgun',
        //          auth: {
        //              user: '', // mailgun username
        //              pass: ''  // mailgun password
        //          }
        //      }
        //  },
        // ```

        database: {
            client: 'sqlite3',
            connection: {
                filename: path.join(__dirname, '/content/data/ghost-dev.db')
            },
            debug: false
        },
        server: {
            // Host to be passed to node's `net.Server#listen()`
            host: '127.0.0.1',
            // Port to be passed to node's `net.Server#listen()`, for iisnode set this to `process.env.PORT`
            port: '2368'
        },
        paths: {
            contentPath: path.join(__dirname, '/content/')
        },

        storage: {
        active: 'ghost-s3',
        'ghost-s3': {
         accessKeyId: AWS_ACCESS_KEY,
         secretAccessKey: AWS_SECRET_KEY,
         bucket: 'ghost-blogpost-images',
         region: 'us-east-1',
         assetHost: '//s3.amazonaws.com/ghost-blogpost-images/'
        }
    }

    },

    // **Developers only need to edit below here**

    // ### Testing
    // Used when developing Ghost to run tests and check the health of Ghost
    // Uses a different port number
    testing: {
        url: 'http://127.0.0.1:2369',
        database: {
            client: 'sqlite3',
            connection: {
                filename: path.join(__dirname, '/content/data/ghost-test.db')
            }
        },
        server: {
            host: '127.0.0.1',
            port: '2369'
        },
        logging: false
    },

    // ### Testing MySQL
    // Used by Travis - Automated testing run through GitHub
    'testing-mysql': {
        url: 'http://127.0.0.1:2369',
        database: {
            client: 'mysql',
            connection: {
                host     : '127.0.0.1',
                user     : 'root',
                password : '',
                database : 'ghost_testing',
                charset  : 'utf8'
            }
        },
        server: {
            host: '127.0.0.1',
            port: '2369'
        },
        logging: false
    },

    // ### Testing pg
    // Used by Travis - Automated testing run through GitHub
    'testing-pg': {
        url: 'http://127.0.0.1:2369',
        database: {
            client: 'pg',
            connection: {
                host     : '127.0.0.1',
                user     : 'postgres',
                password : '',
                database : 'ghost_testing',
                charset  : 'utf8'
            }
        },
        server: {
            host: '127.0.0.1',
            port: '2369'
        },
        logging: false
    }
};

// Export config
module.exports = config;

Hi Connord,

It looks like the section

production: {
        url: 'http://www.testsite.com',

is your culprit. When I tested my ghost install and changed to a URL that wasn't resolving to the proper IP, I also got a 502. Try replacing that URL with either a URL that is pointed at your Droplet's IP, or use the IP itself. Save, restart Ghost, and test again.