1HTTPD.CONF(5) httpd.conf HTTPD.CONF(5)
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6 httpd.conf - Configuration files for httpd
7
9 /etc/httpd/conf/httpd.conf, /etc/httpd/conf.modules.d,
10 /etc/httpd/conf.d
11
13 The main configuration file for the httpd daemon is
14 /etc/httpd/conf/httpd.conf. The syntax of this file is described at
15 https://httpd.apache.org/docs/2.4/configuring.html, and the full set of
16 available directives is listed at
17 https://httpd.apache.org/docs/2.4/mod/directives.html.
18 Configuration structure
20 The main configuration file (httpd.conf) sets up various defaults and
21 includes configuration files from two directories -
22 /etc/httpd/conf.modules.d and /etc/httpd/conf.d. Packages containing
23 loadable modules (like mod_ssl.so) place files in the conf.modules.d
24 directory with the appropriate LoadModule directive so that module is
25 loaded by default.
26 Some notable configured defaults are:
28 DocumentRoot /var/www/html
30 The default document root from which content is served.
31 Listen 80
33 The daemon listens on TCP port 80.
34 ErrorLog "logs/error_log"
36 Error messages are logged to /var/log/httpd/error_log.
37 ScriptAlias /cgi-bin/ "/var/www/cgi-bin/"
39 CGI scripts are served via the URL-path /cgi-bin/.
40 To remove any of the default configuration provided in separate files
42 covered below, replace that file with an empty file rather than
43 removing it from the filesystem, otherwise it may be restored to the
44 original when the package which provides it is upgraded.
45 MPM configuration
47 The configuration file at /etc/httpd/conf.modules.d/00-mpm.conf is used
48 to select the multi-processing module (MPM), which governs how httpd
49 divides work between processes and/or threads at run-time. Exactly one
50 LoadModule directive must be uncommented in this file; by default the
51 event MPM is enabled. For more information on MPMs, see
52 https://httpd.apache.org/docs/2.4/mpm.html.
53 If using the prefork MPM, the "httpd_graceful_shutdown" SELinux boolean
55 should also be enabled, since with this MPM, httpd needs to establish
56 TCP connections to local ports to successfully complete a graceful
57 restart or shutdown. This boolean can be enabled by running the
58 command: semanage boolean -m --on httpd_graceful_shutdown
59 Module configuration files
61 Module configuration files are provided in the
62 /etc/httpd/conf.modules.d/ directory. Filenames in this directory are
63 by convention prefixed with two digit numeric prefix to ensure they are
64 processed in the desired order. Core modules provided with the httpd
65 package are loaded by files with a 0x- prefix to ensure these load
66 first. Only filenames with a .conf suffix in this directory will be
67 processed.
68 Other provided configuration files are listed below.
70 /etc/httpd/conf.modules.d/00-base.conf
72 The set of core modules included with httpd which are all loaded by
73 default.
74 /etc/httpd/conf.modules.d/00-optional.conf
76 The set of non-core modules included with httpd which are not
77 loaded by default.
78 /etc/httpd/conf.modules.d/00-systemd.conf
80 This file loads mod_systemd which is necessary for the correct
81 operation of the httpd.service systemd unit, and should not be
82 removed or disabled.
83 Other configuration files
85 Default module configuration files and site-specific configuration
86 files are loaded from the /etc/httpd/conf.d/ directory. Only files with
87 a .conf suffix will be loaded. The following files are provided:
88 /etc/httpd/conf.d/userdir.conf
90 This file gives an example configuration for mod_userdir to map
91 URLs such as http://localhost/~jim/ to /home/jim/public_html/.
92 Userdir mapping is disabled by default.
93 /etc/httpd/conf.d/autoindex.conf
95 This file provides the default configuration for mod_autoindex
96 which generates HTML directory listings when enabled. It also makes
97 file icon image files available at the /icons/ URL-path.
98 /etc/httpd/conf.d/welcome.conf
100 This file enables a "welcome page" at http://localhost/ if no
101 content is present in the default documentation root /var/www/html.
102 /etc/httpd/conf.d/ssl.conf (present only if mod_ssl is installed)
104 This file configures a TLS VirtualHost listening on port 443. If
105 the default configuration is used, the referenced test certificate
106 and private key are generated the first time httpd.service is
107 started; see httpd-init.service(8) for more information.
108 Instantiated services
110 As an alternative to (or in addition to) the httpd.service unit, the
111 instantiated template service httpd@.service unit file can be used,
112 which starts httpd using a different configuration file to the default.
113 For example, systemctl start httpd@foobar.service will start httpd
114 using the configuration file /etc/httpd/conf/foobar.conf. See
115 httpd@.service(8) for more information.
116
118 /etc/httpd/conf/httpd.conf, /etc/httpd/conf.d,
119 /etc/httpd/conf.modules.d
120
122 httpd(8), httpd.service(8),
123 https://httpd.apache.org/docs/2.4/configuring.html,
124 https://httpd.apache.org/docs/2.4/mod/directives.html
125
127 Joe Orton <jorton@redhat.com>
128 Author
129httpd 04/17/2019 HTTPD.CONF(5)