Comparison and optimization of steps to build web servers under CentOS 6 and CentOS 7

Comparison and optimization of the steps to build a web server under CentOS 6 and CentOS 7

With the development of the Internet, web servers have become an indispensable part of our daily life and work. In the process of building a web server, the selection and optimization of the operating system play a crucial role in performance and security. This article will compare and optimize the steps to build a web server under CentOS 6 and CentOS 7.

1. Environment preparation

Whether you are building a web server on CentOS 6 or CentOS 7, you first need to ensure that the server system has installed the corresponding software packages, such as Apache, PHP, MySQL, etc. You can use the yum command to install. The specific installation command is as follows:

CentOS 6:

yum install httpd php mysql mysql-server

CentOS 7:

yum install httpd php mariadb-server mariadb

2. Modify the configuration file

1. Apache configuration file: In CentOS 6, the Apache configuration file is /etc/httpd/conf/httpd.conf; in CentOS 7, the Apache configuration file is /etc/httpd /conf/httpd.conf. You can modify this configuration file to optimize server performance and security.

Example: Modify Apache's MaxClients parameter and set it to a reasonable value to improve the server's concurrent processing capabilities.

CentOS 6:

vim /etc/httpd/conf/httpd.conf

修改以下行：
MaxClients 150

CentOS 7:

vim /etc/httpd/conf/httpd.conf

修改以下行：
<IfModule prefork.c>
MaxClients 150
</IfModule>

2. PHP configuration file: In CentOS 6 and CentOS 7, the default PHP configuration file is ## respectively #/etc/php.ini and /etc/php.ini. You can improve PHP's performance and security by modifying this configuration file.

vim /etc/php.ini

修改以下行：
memory_limit 128M

MySQL configuration file: In CentOS 6 and CentOS 7, the default MySQL configuration file is
3. /etc/my.cnf respectively and /etc/my.cnf.d/mariadb-server.cnf. You can optimize the performance and security of MySQL by modifying this configuration file.

vim /etc/my.cnf

修改以下行：
key_buffer = 16M

vim /etc/my.cnf.d/mariadb-server.cnf

修改以下行：
key_buffer_size = 16M

service httpd start
service mysqld start
chkconfig httpd on
chkconfig mysqld on

systemctl start httpd
systemctl start mariadb
systemctl enable httpd
systemctl enable mariadb

Use caching: You can use caching services such as Memcached or Redis to increase website access speed and reduce database access.
1. Compress and merge static files: You can use gzip to compress and merge CSS and JavaScript files to reduce network transmission volume and improve web page loading speed.
2. Prevent malicious attacks: Firewalls, intrusion detection systems (IDS), etc. can be used to protect servers from malicious requests and attacks.
3. Regular backup and monitoring: Back up server data regularly. It is recommended to use a monitoring system to monitor the performance and security status of the server in real time.

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