helloworld-webapp

This is a HelloWorld webapp that runs on PORT environment variables.

If you set TCP_CONNECTION_ADDRS environment variables, You can check TCP connection to a list of addresses.

This is intended for use during first time setup of ECS fargate, etc.

Preparing images for ECR is the biggest pain in my life!

Endpoints

Returns status 200 for all paths.

Environment variables

PORT (optional)

The port the server will listen to.

Default is 8080.

TCP_CONNECTION_ADDRS (optional)

List of TCP connection addresses to check. (comma separated)

Default is (empty) .

For example, TCP_CONNECTION_ADDRS=mysql.example.com:3306,redis.example.com:6379

TCP_CONNECTION_TIMEOUT (optional)

Timeout in seconds for TCP connection check.

Default is 5.

Running

# This will run the webapp on port 3000 without checking TCP connection.
$ docker run -p 3000:3000 -e PORT=3000 yumafuu/helloworld-webapp

# This will run the webapp on port 9000 with checking TCP connection.
$ docker run -p 9000:9000 -e PORT=9000 -e TCP_CONNECTION_ADDRS=mysql.example.com:3306,redis.example.com:6379 yumafuu/helloworld-webapp

Also compose.yaml show full example.

Development

$ docker build -t yumafuu/helloworld-webapp:tagname .
$ docker push yumafuu/helloworld-webapp:tagname