linux production environment setup, linux environment setup_PHP tutorial

Linux production environment setup, linux environment setup

Linux basic command miscellaneous notes ​

Today we set up a Linux production environment again. This is something that has many steps, is very tedious and has to be done. Although I have done it many times, I still don’t remember many steps and commands. It is troublesome to look for information everywhere every time, so I wrote down some steps for easy search.

Log in to remote MySQL

1	mysql -h 192.168.1.100 -u root -p

Assign permissions to MySQl non-root account

Give the user with account user1 and password 123456 the select, insert, update, and delete permissions for all tables in the testDB database:

1	grant select,insert,update,delete on testDB.* to user1@'%' identified by '123456';

Refresh permissions:

1	flush privileges;

View the maximum number of connections under MySQL

1	show variables like 'max_connections';

Modify the maximum number of connections

1	vi /etc/my.cnf

Find max_connections=100 (if not, add it), change it to:

1	max_connections=1500

Log in to Linux server without password

Use your own computer to log in to the Linux server without a password (you are a Windows system)

on windows

Use cmd command to execute:

1	ssh-keygen -t rsa

Press Enter three times in a row, you can see it in the .ssh folder in the user directory of C drive,

id_rsa is the private key and id_rsa.pub is the public key.

on linux

Execute,

1	ssh-keygen -t rsa

Press Enter 3 times, then cd .ssh/ you can see,

1	id_rsa  id_rsa.pub

Create a public key to save the public key generated by the login-free host, authorized_keys

1	touch authorized_keys

Change his permissions to 600

1	chmod 600 ~/.ssh/authorized_keys

Finally, write the id_rsa.pub public key of the Windows computer into authorized_keys and save it.

File rename

The name of the downloaded JDK file will look like thisjdk-8u65-linux-x64.rpm?AuthParam=1445848743_f162eddc392f630f3b14bcded3bc3f19Change it to jdk-8u65-linux-x64.rpm. The command is as follows:

1	mv jdk-8u65-linux-x64.rpm?AuthParam=1445848743_f162eddc392f630f3b14bcded3bc3f19 jdk-8u65-linux-x64.rpm

Install JDK

Download JDK

1	wget http://download.oracle.com/otn-pub/java/jdk/8u65-b17/jdk-8u65-linux-x64.rpm?Auth Param=1445848743_f162eddc392f630f3b14bcded3bc3f19

Download and rename it to: jdk-8u65-linux-x64.rpm, give 777 permissions

1	`chmod 777 jdk-8u65-linux-x64.rpm`

Installation

1	rpm -ivh jdk-8u65-linux-x64.rpm

View

1	java -version

Configure environment variables

Modify the system environment variable file

1	vi   /etc/profile

Append the following content to the file:

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JAVA_HOME=/usr/java/jdk1.8.0_65 JRE_HOME=/usr/java/jdk1.8.0_65 PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib export JAVA_HOME JRE_HOME PATH CLASSPATH

Make changes effective immediately:

1	source /etc/profile

centos installs nginx directly with yum

Processing source:

1	rpm -ivh http://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm

View nginx information of yum:

1	yum info nginx

Installation:

1	yum install nginx

Start nignx:

1	service nginx start

Enter the host address to view:

http://192.168.1.100/

See,

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Welcome to nginx!   If you see this page, the nginx web server is successfully installed and working. Further configuration is required.   For online documentation and support please refer to nginx.org. Commercial support is available at nginx.com.   Thank you for using nginx.

Indicates success.

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