CFP-46532: Synthetic Probing Subsystem for Connectivity Testing#99
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arighnac wants to merge 1 commit into
Open
CFP-46532: Synthetic Probing Subsystem for Connectivity Testing#99arighnac wants to merge 1 commit into
arighnac wants to merge 1 commit into
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Summary
An observability subsystem that allows an user to generate out-of-band synthetic unidirectional flows to perform on-demand connectivity check/test across running workloads, with zero intrusion on the user workloads. The synthetic flows needs to support a wide range of CUJs, be observable via the Hubble sub-system, and generate more fine-grained debugging data from the Cilium dataplane.
Motivation
On-Demand Connectivity Validation: Allow developers and operators to quickly generate network flows across multiple endpoints via an API. This enables users to perform "on-demand" connectivity status checks between any two workloads with less friction. This also enables users to perform network validations before productionalizing workloads on k8s clusters.
Troubleshooting in the Absence of Live Traffic: A challenge in resolving network connectivity failures for users is the indeterminate volume of traffic at the time of reproduction. By generating synthetic flows, engineers can proactively induce and diagnose issues without waiting for user traffic, expediting root cause analysis.
Extract Important Debugging State out of the Dataplane: Synthetic probes can act as a great interface to generate fine-grained debugging state out of Cilium, given that the generation of such packets would be controlled by the API.
(Discussion continued in CFP.....)