envoyproxy/gateway

Document overload manager configuration

Open

#8,749 opened on Apr 14, 2026

View on GitHub
 (1 comment) (0 reactions) (0 assignees)Go (802 forks)auto 404
documentationhelp wanted

Repository metrics

Stars
 (2,871 stars)
PR merge metrics
 (PR metrics pending)

Description

I am realizing that I depend on an undocumented behavior. The overload manager triggers when memory usage reaches 80% and stops accepting requests:

https://github.com/envoyproxy/gateway/blob/8e813bdd05ecbccf0650c15f9b309b4ca49384e0/internal/infrastructure/kubernetes/proxy/resource.go#L477

https://github.com/envoyproxy/gateway/blob/8e813bdd05ecbccf0650c15f9b309b4ca49384e0/internal/xds/bootstrap/bootstrap.yaml.tpl#L322-L345

I have configured the HorizontalPodAutoscaler threshold to a lower value, so I would consider any change that lower the overload manager threshold below it, a breaking change.

Maybe a new "Overload Manager" page under Traffic? Although it is not really a "task" since it is not configurable at the moment (#3604)

Contributor guide

Research direction
Tech stack
Domain
Issue type
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Prerequisites
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.