Configure alertmanager webhook url to include Hostname

[vidhun sudhakar]

Hi,

I want to include the below Curl request to be converted as http url to be included in the alertmanager webhook url,

Older webhook url:

 webhook_configs: 

  - send_resolved: true

    url: 'http://localhost:2000/alertmanager'

Older Curl command I used to test,

curl  -X POST -d @prom-alert.json http://localhost:3001/prometheustomyapp

Now, my app is running in aws kubernetes pods behind a aws LoadBalancer. 

So I had to modify the curl to include the host domain name , as belowsucceeds , notice 

curl -H "Host: mydomain.net" -X POST -d @prom-alert.json aws-region.elb.amazonaws.com/alertmanager 

How to include this "Host: mydomain.net" in the alertmanager webhook http url ?

Thanks

Vidhun