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health,ipn/ipnlocal: report the node being locked out as a health issue

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Signed-off-by: Tom DNetto <tom@tailscale.com>
This commit is contained in:
Tom DNetto
2023-01-04 10:36:07 -08:00
committed by Tom
parent 907f85cd67
commit 0088c5ddc0
2 changed files with 20 additions and 0 deletions
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11
ipn/ipnlocal/network-lock.go
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@@ -20,6 +20,7 @@ import (
"time"
"tailscale.com/envknob"
"tailscale.com/health"
"tailscale.com/ipn"
"tailscale.com/ipn/ipnstate"
"tailscale.com/net/tsaddr"
@@ -60,9 +61,11 @@ func (b *LocalBackend) permitTKAInitLocked() bool {
func (b *LocalBackend) tkaFilterNetmapLocked(nm *netmap.NetworkMap) {
// TODO(tom): Remove this guard for 1.35 and later.
if b.tka == nil && !b.permitTKAInitLocked() {
health.SetTKAHealth(nil)
return
}
if b.tka == nil {
health.SetTKAHealth(nil)
return // TKA not enabled.
}
@@ -111,6 +114,13 @@ func (b *LocalBackend) tkaFilterNetmapLocked(nm *netmap.NetworkMap) {
} else {
b.tka.filtered = nil
}
// Check that we ourselves are not locked out, report a health issue if so.
if nm.SelfNode != nil && b.tka.authority.NodeKeyAuthorized(nm.SelfNode.Key, nm.SelfNode.KeySignature) != nil {
health.SetTKAHealth(errors.New("this node is locked out; it will not have connectivity until it is signed. For more info, see https://tailscale.com/s/locked-out"))
} else {
health.SetTKAHealth(nil)
}
}
// tkaSyncIfNeeded examines TKA info reported from the control plane,
@@ -177,6 +187,7 @@ func (b *LocalBackend) tkaSyncIfNeeded(nm *netmap.NetworkMap, prefs ipn.PrefsVie
b.logf("Disablement failed, leaving TKA enabled. Error: %v", err)
} else {
isEnabled = false
health.SetTKAHealth(nil)
}
} else {
return fmt.Errorf("[bug] unreachable invariant of wantEnabled /w isEnabled")