From 5dff2d61cc1c27747ee398e04d8e02843aabb1f8 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 7 May 2024 04:04:06 +0200 Subject: Adding upstream version 2.4.38. Signed-off-by: Daniel Baumann --- docs/manual/invoking.html.en | 175 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 175 insertions(+) create mode 100644 docs/manual/invoking.html.en (limited to 'docs/manual/invoking.html.en') diff --git a/docs/manual/invoking.html.en b/docs/manual/invoking.html.en new file mode 100644 index 0000000..ca707fe --- /dev/null +++ b/docs/manual/invoking.html.en @@ -0,0 +1,175 @@ + + + + + +Starting Apache - Apache HTTP Server Version 2.4 + + + + + + +
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Modules | Directives | FAQ | Glossary | Sitemap

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Apache HTTP Server Version 2.4

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Starting Apache

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Available Languages:  de  | + en  | + es  | + fr  | + ja  | + ko  | + tr 

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On Windows, Apache is normally run as a service. + For details, see Running Apache as a Service. +

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On Unix, the httpd program + is run as a daemon that executes continuously in the + background to handle requests. This document describes how + to invoke httpd.

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How Apache Starts

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If the Listen + specified in the configuration file is default of 80 (or any other + port below 1024), then it is necessary to have root privileges in + order to start apache, so that it can bind to this privileged + port. Once the server has started and performed a few preliminary + activities such as opening its log files, it will launch several + child processes which do the work of listening for and + answering requests from clients. The main httpd + process continues to run as the root user, but the child processes + run as a less privileged user. This is controlled by the selected + Multi-Processing Module.

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The recommended method of invoking the httpd + executable is to use the apachectl control script. This + script sets certain environment variables that are necessary for + httpd to function correctly under some operating + systems, and then invokes the httpd binary. + apachectl will pass through any command line + arguments, so any httpd options may also be used with + apachectl. You may also directly edit the + apachectl script by changing the HTTPD + variable near the top to specify the correct location of the + httpd binary and any command-line arguments that you + wish to be always present.

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The first thing that httpd does when it is + invoked is to locate and read the configuration file + httpd.conf. The location of this file is set at + compile-time, but it is possible to specify its location at run + time using the -f command-line option as in

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/usr/local/apache2/bin/apachectl -f + /usr/local/apache2/conf/httpd.conf

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If all goes well during startup, the server will detach from + the terminal and the command prompt will return almost + immediately. This indicates that the server is up and running. + You can then use your browser to connect to the server and view + the test page in the DocumentRoot directory.

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Errors During Start-up

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If Apache suffers a fatal problem during startup, it will + write a message describing the problem either to the console or + to the ErrorLog before + exiting. One of the most common error messages is "Unable + to bind to Port ...". This message is usually caused by + either:

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  • Trying to start the server on a privileged port when not + logged in as the root user; or
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  • Trying to start the server when there is another instance + of Apache or some other web server already bound to the same + Port.
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For further trouble-shooting instructions, consult the + Apache FAQ.

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Starting at Boot-Time

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If you want your server to continue running after a system + reboot, you should add a call to apachectl to your + system startup files (typically rc.local or a file in + an rc.N directory). This will start Apache as + root. Before doing this ensure that your server is properly + configured for security and access restrictions.

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The apachectl script is designed to act like a + standard SysV init script; it can take the arguments + start, restart, and stop + and translate them into the appropriate signals to + httpd. So you can often simply link + apachectl into the appropriate init directory. But be + sure to check the exact requirements of your system.

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Additional Information

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Additional information about the command-line options of httpd and apachectl as well as other support + programs included with the server is available on the + Server and Supporting Programs page. + There is also documentation on all the modules included with the Apache distribution + and the directives that they + provide.

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Available Languages:  de  | + en  | + es  | + fr  | + ja  | + ko  | + tr 

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Comments

Notice:
This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed again by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our mailing lists.
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