headscale/metrics.go

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package headscale
import (
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
)
const prometheusNamespace = "headscale"
var (
// This is a high cardinality metric (namespace x machines), we might want to make this
// configurable/opt-in in the future.
lastStateUpdate = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: prometheusNamespace,
Name: "last_update_seconds",
Help: "Time stamp in unix time when a machine or headscale was updated",
}, []string{"namespace", "machine"})
machineRegistrations = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: prometheusNamespace,
Name: "machine_registrations_total",
Help: "The total amount of registered machine attempts",
}, []string{"action", "auth", "status", "namespace"})
updateRequestsFromNode = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: prometheusNamespace,
Name: "update_request_from_node_total",
Help: "The number of updates requested by a node/update function",
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}, []string{"namespace", "machine", "state"})
updateRequestsSentToNode = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: prometheusNamespace,
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Name: "update_request_sent_to_node_total",
Help: "The number of calls/messages issued on a specific nodes update channel",
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}, []string{"namespace", "machine", "status"})
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// TODO(kradalby): This is very debugging, we might want to remove it.
updateRequestsReceivedOnChannel = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: prometheusNamespace,
Name: "update_request_received_on_channel_total",
Help: "The number of update requests received on an update channel",
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}, []string{"namespace", "machine"})
)