Adding a reboot annotation

[RasmusLauritsen]

Adding a reboot annotation for a easier overview of when a server was rebooted.

[rfmoz]

Great, Thanks!

[guidodobboletta]

This is failing for me for some reason using the latest Grafana I'm getting

"AnnotationQueryRunner failed Query error: 400 Bad Request"

[zero0cool0]

This is failing for me for some reason using the latest Grafana I'm getting

"AnnotationQueryRunner failed Query error: 400 Bad Request"

@guidodobboletta The same happened for me too and I had to add [$__rate_interval] to the expression to get it to work, such that it looks like this "expr": "changes(node_boot_time_seconds{instance=\"$node\"}[$__rate_interval])",

in the json model

[guidodobboletta]

That fixed it for me @zero0cool0 ! Thank you so much

[RasmusLauritsen]

Sorry about that - it didn't show up during my own testing, but I got the same error on a fresh install of Grafana. The fix works here as well :-)