This guide requires that you have:
- An Aptible account
- An SSH key associated with your Aptible user account
- The Aptible Toolbelt installed
1. Get the Code
1 2 git clone https://github.com/wyc/aptible-go-websockets-chat cd aptible-go-websockets-chat
2. Look Around
Dockerfile: Sets up the image that will contain the app. It currently installs Go 1.3.2 and some command line utilities to compile and install the project and its dependencies.
CMDis ignored by Aptible but included for convention
Procfile: Aptible reads this file to determine what to run. You can specify multiple jobs, but this project did not.
*.go: Application code.
*.html: The served HTML template.
3. Provision Your App
Tell the Aptible API that you want to provision an application. Until you push code and trigger a build, Aptible uses this as a placeholder.
aptible apps:create $APP_HANDLE
1 aptible apps:create gorilla-quickstart
4. Add a Git Remote
Add a Git remote named “aptible”:
1 git remote add aptible email@example.com:$ENVIRONMENT_HANDLE/$APP_HANDLE.git
1 git remote add aptible firstname.lastname@example.org:test-env/gorilla-quickstart.git
5. Deploy Your App
Make sure your code is committed, then push to the master branch of the Aptible Git remote:
1 git push aptible master
Deploy logs will stream to your terminal.
6. Add an Endpoint
To expose your app to the Internet, you’ll want to add an HTTPS Endpoint. In the Aptible dashboard, select your app, then open the “Endpoints” tab.
- Service: Select the app service you want to expose (often a
- Endpoint type: The quickest option is request a default *.on-aptible.com endpoint address, which will serve the *.on-aptible.com wildcard certificate. With a custom endpoint, you provide a certificate and key for a domain of your choice.
- Type: External endpoints are exposed to the Internet, meaning their endpoint addresses resolve to public IP addresses. Internal endpoints receive private IP addresses and are only routable from within your stack.
- Save the endpoint, wait for it to provision (usually 2-15 minutes), then test the endpoint address. To test internal endpoints, you can
aptible sshinto your app to spin up an ephemeral container, then
curlyour internal endpoint.
On each subsequent deploy, the Aptible platform will perform a health check on any service with an endpoint. For HTTPS Endpoints, the health check involves making an HTTP request and listening for any response. The service is considered healthy if it responds, regardless of the response status code. Deploys that fail their health checks will not be released.
7. Additional steps for your apps
aptible db:create $DB_HANDLE will provision a 10GB PostgreSQL database.
aptible db:create will return a connection string on success. The host value is mapped to a private subnet within your stack and cannot be used to connect from the outside Internet. Your containerized app can connect, however.
Add the connection string as an environment variable to your app:
1 aptible config:set DATABASE_URL=$CONNECTION_STRING
Then, use that environment variable to connect to the database:
1 2 3 databaseURL := os.Getenv("DATABASE_URL") conn, err := db.Connect(databaseURL) // ...
To connect locally, see the
aptible db:tunnel command.
App secrets can be set as app environment variables via the Aptible CLI tool just as the DATABASE_URL was set.
1 aptible config:set --app APP-HANDLE SENDGRID_USER=user SENDGRID_PASSWORD=hunter2
The environment variable should now be accessible by your app:
1 twilio := gotwilio.NewTwilioClient(os.Getenv("SENDGRID_USER"), os.Getenv("SENDGRID_PASSWORD"))