diff --git a/docs/modules/ROOT/pages/explanations/slis.adoc b/docs/modules/ROOT/pages/explanations/slis.adoc index d1ca0b22..9194ed52 100644 --- a/docs/modules/ROOT/pages/explanations/slis.adoc +++ b/docs/modules/ROOT/pages/explanations/slis.adoc @@ -15,7 +15,7 @@ If the workloads running on the cluster aren't accessible, it might as well be d === Canary **** -*99.75% of all HTTP probes to a canary application succeed* +*HTTP probes to a canary application* **** Probes are sent every minute from the ingress operator, inside the cluster, to the external address of the canary target. @@ -72,7 +72,7 @@ A misbehaving Kubernetes API directly impacts the service level. === Request Error Rate **** -*99.9% of all requests to the Kubernetes API server succeed or are invalid* +*Requests to the Kubernetes API server succeed or are invalid* **** This is measured directly at the API server through the following metrics. @@ -92,7 +92,7 @@ NOTE: We only look for HTTP 5xx errors, which indicate a server side error, and === Uptime **** -*99.9% of all HTTP probes to the Kubernetes API server succeed* +*HTTP probes to the Kubernetes API server succeed* **** Probes are sent every 10 seconds from a blackbox exporter inside the cluster to the readiness endpoint of the Kubernetes API server. @@ -109,7 +109,7 @@ This ability is essential and directly impacts the service level. === Canary **** -*99.75% of canary pods start successfully* +*Canary pods start successfully* **** A controller starts a known good canary pod every minute and checks if it successfully started after 3 minutes. @@ -125,7 +125,7 @@ Any storage issues directly impacts the service level for users. === CSI Operations **** -*99.5% of all CSI operations complete successfully* +*CSI operations complete successfully* **** CSI operations are any interactions of the kubelet or controller-manager with the CSI provider. @@ -156,7 +156,7 @@ Without it, users can't reliably access their workload and even moderate packet === Packet Loss **** -*99.5% of all ICMP pings between canary pods succeed* +*ICMP pings between canary pods succeed* **** A network canary daemonset starts a canary pod on every node.