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ipn/ipnlocal: add advertised and primary route metrics

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Updates tailscale/corp#22075

Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This commit is contained in:
Kristoffer Dalby
2024-09-25 16:50:34 +02:00
committed by Kristoffer Dalby
parent cab2e6ea67
commit 77832553e5
3 changed files with 91 additions and 1 deletions
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29
ipn/ipnlocal/local.go
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@@ -390,9 +390,18 @@ type updateStatus struct {
}
type metrics struct {
// advertisedRoutes is a metric that counts the number of network routes that are advertised by the local node.
// advertisedRoutes is a metric that reports the number of network routes that are advertised by the local node.
// This informs the user of how many routes are being advertised by the local node, excluding exit routes.
advertisedRoutes *usermetric.Gauge
// approvedRoutes is a metric that reports the number of network routes served by the local node and approved
// by the control server.
approvedRoutes *usermetric.Gauge
// primaryRoutes is a metric that reports the number of primary network routes served by the local node.
// A route being a primary route implies that the route is currently served by this node, and not by another
// subnet router in a high availability configuration.
primaryRoutes *usermetric.Gauge
}
// clientGen is a func that creates a control plane client.
@@ -441,6 +450,10 @@ func NewLocalBackend(logf logger.Logf, logID logid.PublicID, sys *tsd.System, lo
m := metrics{
advertisedRoutes: sys.UserMetricsRegistry().NewGauge(
"tailscaled_advertised_routes", "Number of advertised network routes (e.g. by a subnet router)"),
approvedRoutes: sys.UserMetricsRegistry().NewGauge(
"tailscaled_approved_routes", "Number of approved network routes (e.g. by a subnet router)"),
primaryRoutes: sys.UserMetricsRegistry().NewGauge(
"tailscaled_primary_routes", "Number of network routes for which this node is a primary router (in high availability configuration)"),
}
b := &LocalBackend{
@@ -5388,6 +5401,11 @@ func (b *LocalBackend) setNetMapLocked(nm *netmap.NetworkMap) {
b.setTCPPortsInterceptedFromNetmapAndPrefsLocked(b.pm.CurrentPrefs())
if nm == nil {
b.nodeByAddr = nil
// If there is no netmap, the client is going into a "turned off"
// state so reset the metrics.
b.metrics.approvedRoutes.Set(0)
b.metrics.primaryRoutes.Set(0)
return
}
@@ -5408,6 +5426,15 @@ func (b *LocalBackend) setNetMapLocked(nm *netmap.NetworkMap) {
}
if nm.SelfNode.Valid() {
addNode(nm.SelfNode)
var approved float64
for _, route := range nm.SelfNode.AllowedIPs().All() {
if !views.SliceContains(nm.SelfNode.Addresses(), route) && !tsaddr.IsExitRoute(route) {
approved++
}
}
b.metrics.approvedRoutes.Set(approved)
b.metrics.primaryRoutes.Set(float64(tsaddr.WithoutExitRoute(nm.SelfNode.PrimaryRoutes()).Len()))
}
for _, p := range nm.Peers {
addNode(p)