Bug 2113900

Summary: Expose TuneD API to the Unix Domain Socket
Product: Red Hat Enterprise Linux 9 Reporter: Jaroslav Škarvada <jskarvad>
Component: tunedAssignee: Jaroslav Škarvada <jskarvad>
Status: CLOSED ERRATA QA Contact: Robin Hack <rhack>
Severity: unspecified Docs Contact: Šárka Jana <sjanderk>
Priority: unspecified    
Version: 9.1CC: bwensley, jeder, jmario, jmencak, jskarvad, lmanasko, msivak, sjanderk, william.caban
Target Milestone: rcKeywords: Patch, TestCaseProvided, Triaged, Upstream
Target Release: ---Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: tuned-2.20.0-0.1.rc1.el9 Doc Type: Technology Preview
Doc Text:
.Socket API for TuneD available as a Technology Preview The socket API for controlling TuneD through a UNIX domain socket is now available as a Technology Preview. The socket API maps one-to-one with the D-Bus API and provides an alternative communication method for cases where D-Bus is not available. By using the socket API, you can control the TuneD daemon to optimize the performance, and change the values of various tuning parameters. The socket API is disabled by default, you can enable it in the `tuned-main.conf` file.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2023-05-09 08:26:31 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:

Description Jaroslav Škarvada 2022-08-02 10:28:03 UTC 
Description of problem:
TuneD exposes its API on the D-Bus. It has been working quite well so far, but recently new use cases have arose. E.g. for usage with the containers it's required to have API exposed on the Unix Domain Socket.

Version-Release number of selected component (if applicable):
tuned-2.18.0

How reproducible:
Always

Steps to Reproduce:
1. Check available TuneD APIs (control points)
2.
3.

Actual results:
No API exposed on the socket, no TuneD control socket

Expected results:
TuneD control socket with defined API

Additional info:
For the start just mirror the D-Bus API on the socket. With D-Bus ACLs are controlled by Polkit, with sockets just use file permissions for it. Also provide control mechanism to enable/disable the socket API, e.g. through the tuned-main.conf configuration file and maybe also throught the command line option. There should be also option allowing customization of the socket path/name.
Comment 2 Jaroslav Škarvada 2022-11-09 12:43:52 UTC 
Upstream PR:
https://github.com/redhat-performance/tuned/pull/470
Comment 20 errata-xmlrpc 2023-05-09 08:26:31 UTC 
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 (tuned bug fix and enhancement update), 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-2023:2585