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vim installation

Some versions of centos have already installed vim by default, you can check if there is any before installation.

Query command:

rpm -qa|grep vim

Output result:

vim-enhanced-7.4.160-4.el7.x86_64
vim-minimal-7.4.160-4.el7.x86_64
vim-filesystem-7.4.160-4.el7.x86_64
vim-common-7.4.160-4.el7.x86_64

If there is no output above, install vim:

yum -y install vim*

After installation, you can add some configurations to make it more beautiful and convenient to use:

vim /etc/vimrc

set nu          // Set display line number
set showmode    // Set to display the current mode at the bottom of the command line interface, etc.
set ruler       // Display information such as the number of lines where the cursor is located in the lower right corner
set autoindent  // Set the cursor to align with the start character of the previous line when the cursor moves to the next line each time the Enter key is clicked
syntax on       // That is, to set syntax detection, when editing C or Shell scripts, keywords will be displayed in special colors

jdk1.8 installation

Check if the system comes with:

java -v

Go to the official website to download the jdk version you need

Use the remote connection tool to put the downloaded compressed package in the /usr directory for decompression

Configure JDK environment variables:

vim /etc/profile

Configure the environment variable, and note that the directory points to your jdk decompression directory

#java environment
export JAVA_HOME=/usr/jdk1.8.0_211
export CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
export PATH=$PATH:${JAVA_HOME}/bin

Make the configuration file take effect:

source /etc/profile

Test installation results:

 java -version

maven install

The versions of maven on windows and linux are the same, so you can directly throw the maven package you use on windows to linux.

maven-3.6.3-bin.tar.gz download address:

maven official website download

Upload to the /home/work/maven directory

Unzip:

tar -zxvf apache-maven-3.6.3-bin.tar.gz

Configure environment variables:

vim /etc/profile

Add the following content: Pay attention to the directory and version of your maven

export M2_HOME=/home/work/maven/apache-maven-3.3.9
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$M2_HOME/bin:$PATH

source /etc/profile

test:

mvn -v

You may encounter insufficient permissions errors when testing:

-bash: /usr/local/maven/apache-maven-3.2.3/bin/mvn: Permission denied

Add permissions:

enter: chmod a+x /opt/apache-maven-3.2.2/bin/mvn

# /opt/apache-maven-3.2.2/bin/mvn is a string of output after you enter mvn-v, modify it according to your own output

wget install

yum -y install wget

redis installation

Check the version you need on the official website

official website

Step by step:

# 1. Enter the directory
cd /usr/local/

# 2. Download
wget https://download.redis.io/releases/redis-6.2.3.tar.gz

# 3. Unzip
tar xzf redis-6.2.3.tar.gz

# 4. Enter the decompression directory
cd redis-6.2.3

# 5. compile
make

Compilation may appear:

cc: Command not found

That is, less things to compile C

GCC needs to be installed

sudo yum -y install gcc gcc-c++ libstdc++-devel

# Execute after installation
make MALLOC=libc

Modify the configuration file:

/usr/local/redis-6.2.3/redis.conf

Generally, three things are modified:

Modify port: 6379
 Modify login password: requirepass
 You can use the background login daemonize yes

start up

Start in the src directory of redis

/usr/local/redis-6.2.3/src/redis-server /usr/local/redis-6.2.3/redis.conf &

Install Git

sudo yum install -y git

nodejs installation

yum install -y nodejs

Direct installation like this will prompt you "No package available".

First update the epel third-party software library:

yum install -y epel-release
yum install -y nodejs

openssl install

yum install openssl

yum install openssl-devel

Cmake version upgrade

When compiling some C programs, you will be prompted that the Cmake version is too low, that is, you need to upgrade the version.

Download Cmake

Download the latest version cmake-3.22.2.tar.gz here

Then decompress and compile:

cd ~/Downloads/cmake-3.22.2
./configure
make
sudo make install

Test installation results:

cmake -version

Possible problems:

"CMake Error: Could not find CMAKE_ROOT !!!"

input the command:

hash -r

clear cache.

mysql installation

Download and install mysql:

wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm

yum -y localinstall mysql57-community-release-el7-11.noarch.rpm


yum -y install mysql-community-server

#There may be an error indicating that the key is insufficient
rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022

Start the mysql service:

systemctl start mysqld

Set up to start at boot:

systemctl enable mysqld

systemctl daemon-reload

Modify login password:

vim /var/log/mysqld.log

[root@localhost local]# mysql -u root -p

mysql>  ALTER USER 'root'@'localhost' IDENTIFIED BY 'Your password (upper and lower case numeric special characters)';
Query OK, 0 rows affected (0.00 sec)
# Set up remote login
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'your password' WITH GRANT OPTION;
Query OK, 0 rows affected, 1 warning (0.00 sec)

Exit after setting:

exit

Firewall open port 3306:

[root@localhost sysconfig]# cd /etc/sysconfig/
[root@localhost sysconfig]# vim iptables
#Add the code as follows
-A INPUT -p tcp --dport 3306 -j ACCEPT

Restart the firewall:

[root@localhost sysconfig]# service iptables  restart

Configure mysql default encoding to utf-8:

vim /etc/my.cnf

#Add the following code
character_set_server=utf8 
init_connect='SET NAMES utf8'

Restart MySQL:

systemctl restart mysqld