Thanks for your pointers !
I think I indeed have an issue with
<domain>.com
and jump.<domain>.com
not resolving as I would expect
-
<domain>.com
resolves to gitlab pages
DNS resolution
{
"AD": false,
"Additional": [],
"Answer": [
{
"TTL": 287,
"data": "35.185.44.232",
"name": "<domain>.com.",
"type": 1
}
],
"CD": false,
"Question": [
{
"name": "<domain>.com.",
"type": 1
}
],
"RA": true,
"RD": true,
"Status": 0,
"TC": false
}
-
jump.<domain>.com
resolves to my server
DNS resolution
{
"AD": false,
"Additional": [],
"Answer": [
{
"TTL": 42,
"data": "<server IP>",
"name": "jump.<domain>.com.",
"type": 1
}
],
"CD": false,
"Question": [
{
"name": "jump.<domain>.com.",
"type": 1
}
],
"RA": true,
"RD": true,
"Status": 0,
"TC": false
}
-
alertmanager.jump.<domain>.com
=> seems to be resolving to<domain>.com
subdomains ?
DNS resolution
"AD": false,
"Additional": [],
"Authority": [
{
"TTL": 899,
"data": "ns-774.awsdns-32.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400",
"name": "<domain>.com.",
"type": 6
}
],
"CD": false,
"Comment": "Response from 2600:9000:5306:3900::1.",
"Question": [
{
"name": "alertmanager.jump.<domain>.com.",
"type": 1
}
],
"RA": true,
"RD": true,
"Status": 3,
"TC": false
}
So I would need to change the DNS record for this to work (Redirect all subdomains from one domain, to the equivalent subdomain of another domain using DNS and nginx? - Webmasters Stack Exchange) , which I can’t do easily (I do not have control on the DNS records for those servers, only the actual server configuration).
Unless you have another suggestion or option ?
Thanks again @francislavoie for your help!