DNS lookups as an API

Deploy to Cloud Foundry

cd dns-lookup
cf push

You need only one deployment per CF Foundation. All users can share the same instance of the app.

Local operation

For development and debugging purposes, you can deploy locally, too. This won't have access to BOSH DNS's servers, however.

node ./server.js
curl 'http://localhost:8080/json/resolve?host=www.yahoo.com'

API

• The service offers one endpoint, resolve which takes a single argument, host. See examples for usage.

Web UI

cf create-service ...
cf create-service-key SERVICE-INSTANCE KEY-NAME
cf service-key SERVICE-INSTANCE KEY-NAME | tail +2 | jq .hostname
curl 'http://dns-lookup.APP-DOMAIN/resolve?host=HOSTNAME'

Where:

• SERVICE-INSTANCE: The name of the service you'd like to connect to
• KEY-NAME: A service key which will contain the credentials needed
• APP-DOMAIN: Your cloud foundry DNS domain component
• HOSTNAME: The hostname component of the service key's credentials