Install JDK

Download Oracle JDK

https://www.oracle.com/java/technologies/javase-jdk14-downloads.html

1. Decompress

tar -xvf jdk-14.0.2_linux-x64_bin.tar.gz

2. Configuration file

vim /etc/profile

Add the following in the last line

export JAVA_HOME=/usr/local/jdk/jdk-14.0.2
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

3. Make the document effective

source /etc/profile

4. View jdk version

java -version

Install Nginx

1. Download nginx

wget http://nginx.org/download/nginx-1.17.1.tar.gz 

2. Unzip and enter the file

3. Install dependent packages

yum install gcc-c++

yum install pcre

yum install pcre-devel

yum install zlib

yum install zlib-devel

yum install openssl

yum install openssl-devel

4. Check dependent packages

./configure

5. Installing nginx

make install

6. Edit startup script file

Switch to / lib/systemd/system / directory, create nginx,service file, and then edit VIM nginx service

vim /lib/systemd/system/nginx.service

[Unit]
Description=nginx
After=network.target

[Service]
Type=forking
ExecStart=/usr/local/nginx/sbin/nginx
ExecReload=/usr/1oca1/nginx/sbin/nginx reload
ExecStop=/usr /loca1/nginx/sbin/nginx quit
PrivateTmp=true

[Insta11]
WantedBy=multi-user.target

7. Set startup

systemctl enable nginx.service

8. Start nginx

systemctl start nginx.service```

end nginx
systemctl stop nginx. service

restart nginx
systemctl restart nginx. service

9. Firewall

Add port
firewall-cmd --zone=public --add-port=80/tcp --permanent

Reload
firewall-cmd --reload

10. Verify that the installation was successful

Open web page with IP address

Install redis

redis package 1

Download stable version

2. Download redis from Linux

//Download wegt command
yum -y install wget

//Download redis
wget http://download.redis.io/releases/redis-5.0.5.tar.gz

Install redis

1. Unzip and enter the file

tar -xvf redis-5.0.5.tar.gz

Because redis is installed through the source code and relies on the gcc compiler, first confirm the GCC version of its machine to ensure that its GCC version is above 4.2,

2. Install gcc compiler

yum install gcc

3. Install redis

make malloc=libc

After installation, you need to use make test to test

If there is a problem in the compilation test, the direct installation will certainly fail, and the following exceptions may occur

The exception information indicates that we need tcl dependency,

-Install tcl

yum install tcl 

Repeat the make test until it succeeds

cd src && make install

Start redis service

1. Open service

./redis-server

2. We need to set the service to start in the background

vim redis.conf

Modify redis Conf file, daemon daemon daemon no changed to daemon yes

3. Mobile redis Conf to / etc/redis directory and rename it 6379 conf

4. Copy the startup script to / etc / rc d/init. D and renamed redisd

cp /mnt/install/redis-5.0.5/utils/redis_init_script /etc/rc.d/init.d/

-Modify some contents of the renamed redisd file to make it a service

1. Add in the first line of the script, and the new version should not be added

#chkconfig:2345 80 90

2. Modify EXEC and CLIEXEC

#Original content
EXEC=/usr/1oca1/bin/redis-server
CLIEXEC=/usr/loca1/bin/redis-cli

#Modified content
EXEC= install redis Path of/redis-5.0.5/src/redis-server
CLIEXEC= install redis Path of/redis-5.0.5/src/redis-cli

3. Add after $EXEC $CONF&

-Add boot

chkconfig redisd on

-Start the redis service through the set script

service redisd start

-Check whether the firewall is started and add a port to open the entrance to the external machine

firewall-cmd --zone=public --add-port=6379/tcp --permanent

Reload
firewall-cmd --reload

Log in to redis

Redis cli is a client

-Set password

vim /etc/redis/6379.conf

requirepass password

-Set connection IP

vim /etc/redis/6379.conf

bind 0.0.0.0 #All can be connected

Install telnet installation command

CD-ROM device directory

/dev/cdrom

1. Create mount point directory

mkdir /mnt/setup

2. Mount the optical disk drive to the created directory

mount -r /dev/cdrom /mnt/setup

3. Check the telnet package in the attached directory

cd /mnt/setup/Packages//To all installed directories

find *telnet* /Find the installation package,

telnet-0.17-60.el7.x86_64.rpm ,telnet-server-0.17-60.el7.x86_64.rpm
Telnet command / telnet service

4. Installing telnet

rpm -ivh telnet-0.17-60.el7.x86_64.rpm