goss troubleshooting

commands

docker build -t test .
docker run --rm -it --name test test
# in another terminal
while true; do curl -I localhost:8080/healthz; sleep 5; done

Dockerfile

FROM ghcr.io/goss-org/goss as goss

FROM python
COPY --from=goss /usr/bin/goss /usr/bin/goss

WORKDIR /app
COPY goss.yaml .
COPY main.py .
COPY --chmod=755 entrypoint.sh .

EXPOSE 5000
ENTRYPOINT ["./entrypoint.sh"]

entrypoint.sh

#!/usr/bin/env bash

goss -g ./goss.yaml serve --loglevel ERROR &

python ./main.py

goss.yaml

---
process:
  python:
    running: true

main.py

#!/usr/bin/env python

import time
import urllib.request
import urllib.error


def uptime_bot(url):
    while True:
        try:
            _ = urllib.request.urlopen(url)
            print("Website is up!")
        except urllib.error.HTTPError:
            print("Website is down!")
        except urllib.error.URLError:
            print("Website is down!")
        time.sleep(5)


if __name__ == "__main__":
    url = "http://www.google.com"
    uptime_bot(url)

output

Website is up!
Website is up!
Website is up!
2024-10-21T04:41:20Z Stale cache[res], running tests
Website is up!
2024-10-21T04:41:25Z Stale cache[res], running tests
Website is up!
2024-10-21T04:41:31Z Stale cache[res], running tests
Website is up!
2024-10-21T04:41:36Z Stale cache[res], running tests
Website is up!
2024-10-21T04:41:41Z Stale cache[res], running tests
...