Because the project needs to apply for a new server, it is necessary to reconfigure the environment.

nginx installation:

1. One click installation of four dependencies:

   yum -y install gcc zlib zlib-devel pcre-devel openssl openssl-devel

    

2. Enter / usr/local/src directory and create nginx folder
   

   cd /usr/local/src
   mkdir nginx

    

3. Enter the nginx directory you just created and download the nginx tar package

   cd nginx
   wget https://nginx.org/download/nginx-1.17.9.tar.gz

   Unexpectedly, my prompt [error: Certificate common name "*. nginx.com" does not match the required host name "nginx. Org". To connect to nginx.org in an insecure way, use '- no check certificate'.
   
   Modify download command

   wget --no-check-certificate https://nginx.org/download/nginx-1.17.9.tar.gz

   
   
   

4. decompression

   tar -zxvf nginx-1.17.9.tar.gz

    

5. Enter the directory generated by decompression for configuration

   cd nginx-1.17.9
   ./configure

   
   
   

6. Compilation and installation

   make
   make install

    

7. Find installation path

   whereis nginx

   

    

8. nginx.conf partial configuration

   #Configure the maximum number of open files for Nginx worker process
   worker_rlimit_nofile 65535;
   events {
       #Maximum number of client connections allowed for a single process
       worker_connections  8192;
   }
   
   
       #Log log configuration
       access_log  /opt/nginx-logs/access.log  main;
       error_log   /opt/nginx-logs/error.log ;
   
   
       #Set load balancing background server list
       upstream wxsd1.unisk.cnxx {
           ip_hash;
           server 127.0.0.1:8081 max_fails=3 fail_timeout=5s;
           #server 127.0.0.1:8082 max_fails=3 fail_timeout=5s;
           server 127.0.0.1:8083 max_fails=3 fail_timeout=5s;
           server 127.0.0.1:8084 max_fails=3 fail_timeout=5s;
           #server 127.0.0.1:8085 max_fails=3 fail_timeout=5s;
       }

jdk installation:

1. Check whether the jdk that comes with linux is installed

   java  -version

   

   You can see it's OpenJDK
   
   

2. View jdk installation package

   rpm -qa | grep java

   

    

3. Uninstall OpenJDK

   yum remove *openjdk

    

4. Install Oracle JDK
   Download address: https://www.oracle.com/java/technologies/javase-downloads.html
   In the / usr/local directory, create the java installation directory

   cd /usr/local
   mkdir java

   Use xftp to upload the downloaded jdk-8u231-linux-x64.tar.gz file to this directory
   

    

5. decompression

   tar -zxvf jdk-8u231-linux-x64.tar.gz

    

Because the previous project uses jdk1.7, download and install jdk1.7 in the same way

Configure environment variables

1. Configure jdk to / etc/profile to access jdk in any directory

   vim /etc/profile

   

    

   Press i to enter editing, and add the following content at the end of profile file:

   export JAVA_HOME=/usr/local/java/jdk1.7.0_80  #jdk installation directory
   export JRE_HOME=${JAVA_HOME}/jre
   export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib:$CLASSPATH
   export JAVA_PATH=${JAVA_HOME}/bin:${JRE_HOME}/bin
   export PATH=$PATH:${JAVA_PATH}

   Save and exit editing, ESC -- >: WQ
   
   

2. Execute profile file (read and execute commands in profile in current bash environment)
   

   source /etc/profile

   

    

3. Test whether the installation is successful

   java -version
   javac

    

    

    

    
   
   

redis installation:

1. Enter / usr/local/src directory and create redis folder

   cd /usr/local/src
   mkdir redis

    

2. Install redis
   Visit download address: https://redis.io/download
   Upload the downloaded redis-5.0.8.tar.gz to the new redis folder through the remote management tool
   

    

    

3. decompression

   tar -zxvf redis-5.0.8.tar.gz

    

4. Enter the directory of the generated files and perform make compilation

   cd redis-5.0.8
   make

    

5. Perform the make install installation (the software can specify the installation directory)

   make PREFIX=/usr/local/redis install

    

6. redis start and stop commands:

   #Enter the / usr/local/redis/bin directory and execute the redis server script file
   ./redis-server
   
   #Turn off redis services
   pkill  redis-server
   
   #Set redis to run in the background, modify the redis.conf configuration file, and set the daemonize option from no to yes

    

Knock off.