generatorURL - Alert Link

[nbari]

I can't get the Alert Link to work, any idea how to configure it?, I always get

 http://:9090/graph?g0.expr=up+%3D%3D+0&g0.tab=1

the host is missing.

[ryan-summers]

From my experience, the generatorURL is from the prometheus alert configuration, so this is an issue with how you have prometheus set up. Use the --web.external-url option when starting prometheus to properly configure the generatorURL for prometheus. You'll need to do the same with the alertmanager for link-back URLs to the alert manager as well.