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tailcfg, health: add way for control plane to add problems to health check

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So if the control plane knows that something's broken about the node, it can
include problem(s) in MapResponse and "tailscale status" will show it.
(and GUIs in the future, as it's in ipnstate.Status/JSON)

This also bumps the MapRequest.Version, though it's not strictly
required. Doesn't hurt.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2021-09-18 12:59:55 -07:00
committed by Brad Fitzpatrick
parent b14db5d943
commit aae622314e
5 changed files with 39 additions and 1 deletions
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7
types/netmap/netmap.go
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@@ -54,6 +54,13 @@ type NetworkMap struct {
// Debug knobs from control server for debug or feature gating.
Debug *tailcfg.Debug
// ControlHealth are the list of health check problems for this
// node from the perspective of the control plane.
// If empty, there are no known problems from the control plane's
// point of view, but the node might know about its own health
// check problems.
ControlHealth []string
// ACLs
User tailcfg.UserID