---
title: "Observability"
date: 2018-06-20T19:04:38+02:00
draft: false
---

:sectlinks:

= Kiali Observability Glossary
:sectnums:
:toc: left
toc::[]
:toc-title: Observability Glossary Content
:keywords: Kiali Documentation Glossary
:icons: font
:imagesdir: /images/documentation/glossary/observability/

== Citadel

For more information see the Citadel definition in link:https://istio.io/v1.5/docs/ops/deployment/architecture/#citadel[Istio Citadel Documentation].

== Envoy

A proxy that Istio starts for each pod in the service mesh.
For more information see the Envoy definition in link:https://istio.io/docs/ops/deployment/architecture/#envoy[Istio Pilot Documentation].

=== Envoy Health

A health check performed by Envoy proxies, for inbound and outbound traffic: see membership_healthy and membership_total from link:https://www.envoyproxy.io/docs/envoy/v1.7.1/configuration/cluster_manager/cluster_stats#general[Envoy documentation].

== Pilot

For more information see the Pilot definition in link:https://istio.io/v1.5/docs/ops/deployment/architecture/#pilot[Istio Pilot Documentation].

[#img-homepage]
.Kiali Graph
image::arch.svg[Demo Website]
