Hello, i asked this question previous year and now we are in 2.2.3 'version.
“collector-sidecar is great but if it have a problem (service stopped for example or routing data (we don’t know what can an administrator do with his computer), we want graylog send an alert (mail or http) consistent with status (Last seen more than X minutes for example, so ‘there is a problem with collector-sidecar !’). Is it possible ?“
An answer by Marius Sturm :” Currently it’s not possible to send an alert but with the upcoming 2.1 release the sidecar is sending a status signal back to Graylog. So when you enable the ‘send_status’ option you can see on the collector web page which collector has a broken configuration or just crashed.”
My question : how to make this working ?