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List of frequently used apache directives

2017.10.17

Server construction/operation

table of contents

1 ・apache configuration file
2 ・Apache directives
3 lastly

My name is Nakagawa from the System Solutions Department.
currently studying for
the LPIC202 exam In particular, I am enthusiastically working on the basic settings of Apache included in "Theme 208: HTTP Service",
as this is related to server construction and troubleshooting.
We have summarized the frequently touched apache configuration items (directives).

・apache configuration file

The apache configuration file name and installation location differ depending on the OS.

CentOS・RHEL・Fedora	/etc/httpd/conf/
SUSE・Debian・MacOS	/etc/apache2/
sauce	/usr/local/apache2/conf/

The directories introduced here are just likely to contain configuration files, so
if you can't find them, try searching using the find command.

・Apache directives

Directives are used to give instructions or specifications to a program.
Settings can be added or edited by writing special instructions in the file.
The following directives need to be modified when building the server.

directive name	Setting details
Timeout	Number of seconds from receiving a request to completing processing
Keep Alive	Enabling/disabling multiple request processing in one TCP connection
MaxKeepAliveRequests	Maximum number of requests in one TCP connection when KeepAlive is enabled
KeepAliveTimeout	Maximum waiting time for one TCP connection when KeepAlive is enabled
Options	Set available features for directories

The directives regarding apache child processes (processes started by other processes) are as follows.

directive name	Setting details
StartServers	Number of child processes created at startup
MinSpareServers	Minimum number of child processes to wait
MaxSpareServers	Maximum number of child processes to wait
MaxClients	Upper limit for child processes spawned
MaxRequestsPerChild	Number of requests that a child process can handle

checking the settings for child processes (processes started by other processes) when the server load is high,
or by modifying the values in consideration of the apache access status and server processing performance. Masu.

lastly

This is my second year at the company, and when dealing with alerts that occur daily on each web server,
I can determine the cause based on my past experience, but I am
not very good at investigating the root cause. In terms of finding measures to prevent recurrence, there are many things that I feel are lacking.

you understand the load, basic performance, and configuration status of each server and
take fundamental measures.

This time we only picked up a limited number of apache directives, but
next time we will also look into middleware other than apache.

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