Part IV (1): Installation and configuration of Linux web environments commonly used by enterprises (apache, php, mysql)-1024programmer

In the previous article, we talked about basic software package management and file operations, and now we have to install something useful!

In this article, I will write a method to install apache, php, mysql with yum, and finally run phpMyAdmin to manage the database.

1. How to install apache on a Linux host

Because we installed the completed centos system before, the system may have already installed apache, so let’s check whether it is really installed

Type the command first, yum list installed httpd*
, if you see that httpd is already installed, then yum -y remove httpd*
Uninstall it. Just review the software management taught before.

After uninstalling, install apache now,

After the installation is complete, then, add httpd to boot (use chkconf httpd
on to start the boot, check the status with chkconfig –list httpd)

After setting up the boot, let’s check again, is apache started at this moment? (with service
httpd status)

service httpd status
It is to check the status of httpd. The result of stop is shown in the figure, indicating that it is not running

Let’s open this service again service httpd start
, but we also saw the reminder sent to us by httpd as shown in the figure:

httpd: Could not reliably determine the
server’s fully qualified domain name, using localhost.localdomain for
ServerName

Let’s quickly modify the configuration file of apache (vi
/etc/httpd/conf/httpd.conf)

After entering the file, query the ServerName, (the query in the vi editor is to press the / symbol on the keyboard first, and then you can type, it is case-sensitive. Just press Enter after typing)

Press the up, down, left, and right keys to scroll slowly, press Ctrl+F to turn down the page, and press Ctrl+B to turn up the page.

It is found that there is a line #serverName www.example.com:80 as shown above
, Just delete the # in front of it.

The way to delete is to press the letter i, then the editor will switch to editable mode, then press up, down, left, and right to move the cursor to the back of #, and then press [←Backspace]

Press shift+ after deleting;
It is equivalent to the : symbol appearing in the lower left corner of the editor, followed by entering w and q, which is equivalent to :wq
, which is what it means to save and exit.

Then we restart apahce