chore: add generic DNS record for checking if Coder Connect is running

ethanndickson · ethanndickson · commit 75395e1215b3 · 2025-04-11T03:49:26.000Z
diff --git a/tailnet/controllers.go b/tailnet/controllers.go
@@ -16,6 +16,7 @@ import (
 	"golang.org/x/xerrors"
 	"storj.io/drpc"
 	"storj.io/drpc/drpcerr"
+	"tailscale.com/net/tsaddr"
 	"tailscale.com/tailcfg"
 	"tailscale.com/util/dnsname"
 
@@ -1265,6 +1266,11 @@ func (t *tunnelUpdater) updateDNSNamesLocked() map[dnsname.FQDN][]netip.Addr {
 			}
 		}
 	}
+	fqdn, err := dnsname.ToFQDN("is.coder.connect.enabled.right.now--.coder.")
+	if err != nil {
+		panic(fmt.Sprintf("failed to create static FQDN: %v", err))
+	}
+	names[fqdn] = []netip.Addr{tsaddr.CoderServiceIPv6()}
 	return names
 }
 

Original file line number	Diff line number	Diff line change
`@@ -16,6 +16,7 @@ import (`
`16`	`16`	`"golang.org/x/xerrors"`
`17`	`17`	`"storj.io/drpc"`
`18`	`18`	`"storj.io/drpc/drpcerr"`
	`19`	`+ "tailscale.com/net/tsaddr"`
`19`	`20`	`"tailscale.com/tailcfg"`
`20`	`21`	`"tailscale.com/util/dnsname"`
`21`	`22`
`@@ -1265,6 +1266,11 @@ func (t *tunnelUpdater) updateDNSNamesLocked() map[dnsname.FQDN][]netip.Addr {`
`1265`	`1266`	`}`
`1266`	`1267`	`}`
`1267`	`1268`	`}`
	`1269`	`+ fqdn, err := dnsname.ToFQDN("is.coder.connect.enabled.right.now--.coder.")`
	`1270`	`+ if err != nil {`
	`1271`	`+ panic(fmt.Sprintf("failed to create static FQDN: %v", err))`
	`1272`	`+ }`
	`1273`	`+ names[fqdn] = []netip.Addr{tsaddr.CoderServiceIPv6()}`
`1268`	`1274`	`return names`
`1269`	`1275`	`}`
`1270`	`1276`