Jonathan Nobels 19b0c8a024 net/dns, health: raise health warning for failing forwarded DNS queries (#12888) ...

updates tailscale/corp#21823

Misconfigured, broken, or blocked DNS will often present as
"internet is broken'" to the end user.  This  plumbs the health tracker
into the dns manager and forwarder and adds a health warning
with a 5 second delay that is raised on failures in the forwarder and
lowered on successes.

Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>

2024-07-29 13:48:46 -04:00

..

debug.go

all: use Go 1.22 range-over-int

2024-04-16 15:32:38 -07:00

doh_test.go

net/dns/resolver: remove maxDoHInFlight

2023-02-03 17:07:12 -08:00

forwarder_test.go

net/dns, health: raise health warning for failing forwarded DNS queries (#12888)

2024-07-29 13:48:46 -04:00

forwarder.go

net/dns, health: raise health warning for failing forwarded DNS queries (#12888)

2024-07-29 13:48:46 -04:00

macios_ext.go

all: avoid repeated default interface lookups

2023-04-20 15:46:01 -07:00

tsdns_server_test.go

all: update copyright and license headers

2023-01-27 15:36:29 -08:00

tsdns_test.go

net/dns, health: raise health warning for failing forwarded DNS queries (#12888)

2024-07-29 13:48:46 -04:00

tsdns.go

net/dns, health: raise health warning for failing forwarded DNS queries (#12888)

2024-07-29 13:48:46 -04:00