Basic HTTP Ping with modulable alerting
Checker will alert you if an URL you're monitoring returns an HTTP response status code that is not 200.
Easiest way to use this is to compile it in a docker container :
docker build -t checker:latest -f ./Dockerfile ./
Populate .env file from .env.dist template. MONITORED_URLS should be a comma separated, http/https prefixed, set of URLs.
Then, running the script itself is a matter of populating environment variables in .env and starting docker container with environment file mounted
docker run --rm -v $(pwd)/.env:/go/bin/.env checker:latest --notifier=slack check
The official image built from this repository is also available on Docker hub image registry https://cloud.docker.com/u/pauulog/repository/docker/pauulog/checker
In the following example, the program will check every minute if the URLs are up.
* * * * docker run --rm -v $(pwd)/.env:/go/bin/.env docker.io/pauulog/checker:latest --notifier=slack check