Prometheus { # Prometheus
n1: circle label:"Start"
n2: rectangle label:"Scrape metrics endpoint"
n3: rectangle label:"Evaluate alert rules"
n4: diamond label:"Threshold breached?"
n5: rectangle label:"Fire alert to Alertmanager"
n6: circle label:"End"
n1.handle(right) -> n2.handle(left)
n2.handle(right) -> n3.handle(left)
n3.handle(right) -> n4.handle(left)
n4.handle(right) -> n5.handle(left) [label="Yes"]
n4.handle(bottom) -> n6.handle(top) [label="No"]
n5.handle(bottom) -> Alertmanager.n7.handle(top) [label="Alert fired"]
}
Alertmanager { # Alertmanager
n7: rectangle label:"Receive alert"
n8: rectangle label:"Deduplicate alerts"
n9: rectangle label:"Group related alerts"
n10: diamond label:"Silenced or inhibited?"
n11: rectangle label:"Route to receiver"
n12: rectangle label:"Drop alert"
n7.handle(right) -> n8.handle(left)
n8.handle(right) -> n9.handle(left)
n9.handle(right) -> n10.handle(left)
n10.handle(right) -> n11.handle(left) [label="No"]
n10.handle(bottom) -> n12.handle(top) [label="Yes"]
n11.handle(bottom) -> Notification.n13.handle(top) [label="Notify"]
n12.handle(top) -> Prometheus.n6.handle(bottom) [label="Suppressed"]
}
Notification { # Notification Channels
n13: rectangle label:"Format alert message"
n14: diamond label:"Channel type?"
n15: rectangle label:"Send to Slack"
n16: rectangle label:"Send to PagerDuty"
n17: rectangle label:"Send email"
n18: rectangle label:"Log delivery status"
n13.handle(right) -> n14.handle(left)
n14.handle(right) -> n15.handle(left) [label="Slack"]
n14.handle(bottom) -> n16.handle(top) [label="PagerDuty"]
n14.handle(left) -> n17.handle(top) [label="Email"]
n15.handle(bottom) -> n18.handle(top)
n16.handle(right) -> n18.handle(left)
n17.handle(bottom) -> n18.handle(left)
n18.handle(top) -> Prometheus.n6.handle(bottom) [label="Delivered"]
}