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tailscale/health
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>
4 months ago
..
healthmsg health: warn about reverse path filtering and exit nodes 9 months ago
args.go net/dns, health: raise health warning for failing forwarded DNS queries (#12888) 4 months ago
health.go health: support delayed Warnable visibility (#12783) 5 months ago
health_test.go health: drop unnecessary logging in TestSetUnhealthyWithTimeToVisible (#12795) 5 months ago
state.go health: support delayed Warnable visibility (#12783) 5 months ago
warnings.go health: support delayed Warnable visibility (#12783) 5 months ago