Apache configuration question - MPM modules

From	Lars Poulsen <lars@beagle-ears.com>
Newsgroups	comp.os.linux.misc
Subject	Apache configuration question - MPM modules
Date	2026-02-07 21:22 +0000
Organization	A noiseless patient Spider
Message-ID	<slrn10ofb8d.3cerc.lars@cleo.beagle-ears.com> (permalink)

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I recently reinstalled Fedora 43 on my Linux workstation, because I got
a new system hardware unit.

My previous system was at least 10 years old and had survived numerous
in-place version upgrades.

After re-install, the httpd service complains on /var/log/error_log
that because I have the single-threaded MPM module "mpm_prefork"
installed, it wil not be able to serve HTTP 2.0.

[Fri Feb 06 06:04:49.941831 2026] [http2:warn] [pid 1684:tid 1684]
    AH10034: The mpm module (prefork.c) is not supported by mod_http2.
    The mpm determines how things are processed in your server.
    HTTP/2 has more demands in this regard and the currently selected
    mpm will just not do. This is an advisory warning.
    Your server will continue to work, but the HTTP/2 protocol
    will be inactive.

I vaguely remember a long time ago having to select among 2 or 3
different MPM modules, using configuration statements in httpd.conf,
but looking at the httpd.conf file that I carried over from the old
system, I do not see any such statements.

The manual at https://httpd.apache.org/docs/current/mpm.html says
that on a unix-like system, mpm_event will be installed by
default.

How do I resolve this problem?

-- 
Lars Poulsen - an old geek in Santa Barbara, California

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Thread

Apache configuration question - MPM modules Lars Poulsen <lars@beagle-ears.com> - 2026-02-07 21:22 +0000
  Re: Apache configuration question - MPM modules Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-02-07 21:59 +0000
    Re: Apache configuration question - MPM modules Lars Poulsen <lars@beagle-ears.com> - 2026-02-08 14:03 +0000
      Re: Apache configuration question - MPM modules Lars Poulsen <lars@beagle-ears.com> - 2026-02-08 14:16 +0000
  Re: Apache configuration question - MPM modules jayjwa <jayjwa@atr2.ath.cx.invalid> - 2026-02-08 16:27 -0500

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