github.com/cilium/cilium@v1.16.2/Documentation/observability/hubble/index.rst (about) 1 .. only:: not (epub or latex or html) 2 3 WARNING: You are looking at unreleased Cilium documentation. 4 Please use the official rendered version released here: 5 https://docs.cilium.io 6 7 .. _hubble_intro: 8 9 ********************************* 10 Network Observability with Hubble 11 ********************************* 12 13 Observability is provided by Hubble which enables deep visibility into the 14 communication and behavior of services as well as the networking infrastructure 15 in a completely transparent manner. Hubble is able to provide visibility at the 16 node level, cluster level or even across clusters in a :ref:`Cluster Mesh` 17 scenario. For an introduction to Hubble and how it relates to Cilium, read the 18 section :ref:`intro`. 19 20 By default, Hubble API operates within the scope of the individual node on which the 21 Cilium agent runs. This confines the network insights to the traffic observed by the local 22 Cilium agent. Hubble CLI (``hubble``) can be used to query the Hubble API provided via a local 23 Unix Domain Socket. The Hubble CLI binary is installed by default on Cilium agent pods. 24 25 Upon deploying Hubble Relay, network visibility is provided for the entire cluster or even 26 multiple clusters in a ClusterMesh scenario. In this mode, Hubble data can be accessed by 27 directing Hubble CLI (``hubble``) to the Hubble Relay service or via Hubble UI. 28 Hubble UI is a web interface which enables automatic discovery of the services dependency 29 graph at the L3/L4 and even L7 layer, allowing user-friendly visualization and filtering 30 of data flows as a service map. 31 32 .. toctree:: 33 :maxdepth: 2 34 :glob: 35 36 setup 37 hubble-cli 38 hubble-ui 39 configuration/export 40 configuration/tls