Don't force .generatorURL to open the "Console" tab

[carlpaten]

What did you do?

I have a Slack integration that uses {{ .GeneratorURL }} to link to a graph.

What did you expect to see?

I expected the relevant URL to lend itself to appending parameters, for example adding &g0.tab=0 to link to the "Graph" tab in the Prometheus web interface.

What did you see instead? Under which circumstances?

The generated URL has &g0.tab=1 at the end of it. It's not possible to override that by adding another parameter after.

Environment

• System information:

Linux 3.10.0-862.14.4.el7.x86_64 x86_64

• Alertmanager version:

alertmanager, version 0.15.1 (branch: HEAD, revision: 8397de1830f154535a31150f9262da0072d8725d)
  build user:       root@efde7f9485ae
  build date:       20180712-18:25:27
  go version:       go1.10.3

• Prometheus version:

prometheus, version 2.4.0 (branch: HEAD, revision: 068eaa5dbfce6c08f3d05d3d3c0bfd96267cfed2)
  build user:       root@d84c15ea5e93
  build date:       20180911-10:46:37
  go version:       go1.10.3

[simonpasquier]

GeneratorURL isn't created by AlertManager so prometheus/prometheus#5115 is more relevant. As a workaround, you could modify it in the receiver template:

... {{ .GeneratorURL | reReplaceAll "&g0.tab=1$" "&g0.tab=0" }} ...

I'm closing it for now. If you have further questions, please use our user mailing list, which you can also search.

[roidelapluie]

Note that in general we should avoid opening the graph panel with "random" queries, especially if the query is huge, getting the last hour could crash Prometheus.