forked from GithubBackups/healthchecks
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Passing `--data-raw` to curl implies the request is method will be POST. Unless we intend to do something entirely different, -X method override shouldn't be used. Curl's author Daniel Stenberg (@bagder) wrote about this back in 2015 https://daniel.haxx.se/blog/2015/09/11/unnecessary-use-of-curl-x/
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Attaching Logs
SITE_NAME ping endpoints accept HTTP HEAD, GET and POST request methods.
When using HTTP POST, you can include arbitrary payload in the request body. If the request body looks like a UTF-8 string, SITE_NAME will log the first 10 kilobytes of the request body, so you can inspect it later.
Logging Command Output
In this example, we run certbot renew, capture its output, and submit
the captured output to SITE_NAME:
#!/bin/sh
m=$(/usr/bin/certbot renew 2>&1)
curl -fsS --retry 3 --data-raw "$m" PING_URL
In Combination with the /fail Endpoint
We can extend the previous example and signal either success or failure depending on the exit code:
#!/bin/sh
url=PING_URL
m=$(/usr/bin/certbot renew 2>&1)
if [ $? -ne 0 ]; then url=$url/fail; fi
curl -fsS --retry 3 --data-raw "$m" $url
All in One Line
Finally, all of the above can be packaged in a single line. The one-line version can be put directly in crontab, without using a wrapper script.
m=$(/usr/bin/certbot renew 2>&1); curl -fsS --data-raw "$m" "PING_URL$([ $? -ne 0 ] && echo -n /fail)"