cgerull/echo-server repository overview

⁠Echo Server

Simple web echo server for orchestration testing.

⁠Usage

Use the docker-compose file to build and run the client server demo locally.

For swarm testing use the docker-stack.yml configuration. Change to the image value to use your own, customized images.

In Swarm mode you need to add a secret with:

echo SwarmEtcdSecret | docker secret create my_secret_key -

⁠Server

⁠HTML response

Point your browser to http://<name or ip>:8080/. The server returns an page with this information:

Welcome to the demo webserver

Local server time is 2020-01-08 11:49:21.861499
The server ip is: 10.0.18.4
The container name is 27f2a1769ce1
The secret key is SwarmEtcdSecret

Your request came from: 10.255.0.2

The value of the secret key depends on the place of definition.

⁠REST interface

Send a GET request with your favorite REST client (cUrl, insomnia, postman).

curl http://192.168.99.109:8080/api/echo
{"container_name":"d89af7728f6d","local_ip":"10.0.18.3","now":"2020-01-08 11:53:24.647791","remote_ip":"10.255.0.2","secret":"SwarmEtcdSecret\n"}

⁠Server parameters

Configuration by setting environment variables.

"PORT=8080"
'LOGFORMAT="%(h)s %(l)s %(t)s %({Server-IP}o)s %(l)s %(r)s %(s)s %(b)s %(a)s"'
"LOGLVL=INFO"
"SECRET_KEY=DockerComposeSecret"

⁠Call-generator

For performance testing or call log generation the call-generator container can be used. It will create an endless stream of HTTP requests to the configured URL.

⁠Call-generator parameters

Configuration by setting environment variables.

"SERVER=srv"
"SRV_PATH=/api/echo"
"PORT=8080"
"LOGFILE=/home/web/log/call-gen.log"

⁠ToDo

• Make path on log volume configurable.