Bug 1443665
| Summary: | [3.4] HAProxy router's request buffer is too small | |||
|---|---|---|---|---|
| Product: | OpenShift Container Platform | Reporter: | Miciah Dashiel Butler Masters <mmasters> | |
| Component: | Networking | Assignee: | Miciah Dashiel Butler Masters <mmasters> | |
| Networking sub component: | router | QA Contact: | zhaozhanqi <zzhao> | |
| Status: | CLOSED ERRATA | Docs Contact: | ||
| Severity: | unspecified | |||
| Priority: | unspecified | CC: | aos-bugs, bbennett, bperkins, eparis, jeder, jmencak, mifiedle, tdawson | |
| Version: | 3.4.1 | |||
| Target Milestone: | --- | |||
| Target Release: | 3.4.z | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | ||
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1443668 (view as bug list) | Environment: | ||
| Last Closed: | 2017-04-26 05:38:24 UTC | Type: | Bug | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
This has been merged into ocp and is in OCP v3.4.1.18 or newer. verified this bug on v3.4.1.18 steps: 1. Create app/service/route. eg. route=service-unsecure-default.0421-tsj.qe.rhcloud.com 2. curl "http://${route}/" -H "X-Foo: $(perl -e 'print "x"x8192')" Hello-OpenShift-1 http-8080 Can we do a release note talking about the non-trivial amount of increased memory usage documented in the github issue? https://github.com/openshift/origin/pull/13792#issuecomment-297079755 Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2017:1129 |
Description of problem: HAProxy's default request buffer configuration only allows 8192 bytes for headers in incoming requests. This limit is too low. haproxy-config.template does not specify tune.bufsize or tune.maxrewrite. The default value for tune.bufsize is 16384 bytes. The default value for tune.maxrewrite is half of tune.bufsize. Incoming request headers are limited to the difference, tune.bufsize - tune.maxrewrite, thus 8192 bytes, by default. Version-Release number of selected component (if applicable): v3.4.1.9 Steps to reproduce: The problem can be demonstrated with the following command: curl "http://${some_route}/" -H "X-Foo: $(perl -e 'print "x"x8192')" Actual results: HAProxy responds with "400 Bad request". Expected results: HAProxy should return a 200 response.