Linux server-side application installation

Posted by on Mon, 07 Mar 2022 03:28:14 +0100

Install JDK

Uninstall the JDK pre installed in the system. Linux comes with java, but it cannot be compiled without javac, so it needs to be uninstalled and reinstalled

rpm -qa | grep openjdk

Perform uninstall. Use -- nodeps to ignore dependencies during uninstall

[root@localhost ~]# rpm -e --nodeps java-1.8.0-openjdk-headless-
[root@localhost ~]# rpm -e --nodeps java-1.7.0-openjdk-
[root@localhost ~]# rpm -e --nodeps java-1.8.0-openjdk-
[root@localhost ~]# rpm -e --nodeps java-1.7.0-openjdk-headless-

Restart the system


Download jdk from the official website

Upload the downloaded installation package to the linux server (I uploaded it with xftp downloaded from Xshell)

Transfer to Linux of/opt In the folder

Unzip the tar package

tar -zxvf /opt/jdk-8u321-linux-x64.tar.gz

Enter the etc folder

cd /etc

The profile file needs to be modified to prevent error correction and backup first (you can also skip this operation)

cp profile profile.bak

Open the profile file using vim

vim profile

Add the following

# Create environment variable: JAVA_HOME

# Append a new value to the PATH environment variable and never overwrite its old value
# Publish the above two environment variables

After saving and exiting vim, execute the / etc/profile script with the source command to make the environment variables published in the script take effect. However, it is limited to the current process. If you want the new environment variable to take effect globally, you need to reboot.

source /etc/profile

echo output the environment variable to see if it has taken effect

echo $PATH

Install tomcat

Download the tomcat installation package and upload it to the Linux server / opt file directory

Unzip the tar package

tar -zxvf /opt/apache-tomcat-9.0.59.tar.gz

Start Tomcat


Stop Tomcar


view log

tail -F /opt/apache-tomcat-9.0.59/logs/catalina.out

The deployment war package is placed in the webapps directory


Using a browser to access localhost:8080 on Linux

  • The local host browser can be used to access the Linux system
  • Linux IP address is required to access Tomcat on Linux server in Windows system( )

Install Mysql

It's best to take a snapshot before installation

TIP: MySQL was acquired by Oracle. The community is worried that MySQL will be closed by Oracle in the future. The open source mode will become commercial operation like Oracle database. Therefore, the community has developed a community version of MySQL. It is the same as MySQL internally, but its name is different. This is mariadb. However, mariadb, which has been pre installed in the Linux system, is only a fragment and cannot be used directly. So you still have to uninstall first

Uninstall the system and pre install mariadb

rpm -e --nodeps mariadb-libs-1:5.5.56-2.el7.x86_64

Install server-side programs

rpm -ivh /opt/MySQL-server-5.5.52-1.el6.x86_64.rpm


[root@localhost opt]# id mysql

uid=988(mysql) gid=982(mysql) group=982(mysql)

Install client program

rpm -ivh /opt/MySQL-client-5.5.52-1.el6.x86_64.rpm

Start MySQL service

systemctl start mysql.service

Test service, process and port number

systemctl status mysql.service

ps -ef | grep mysql | grep -v grep

netstat -anp | grep mysql

Set the root user password (set the password by remembering what you entered, the screen will not be displayed, and enter after entering)

Note: the root user here is the root user of MySQL, not Linux

[root@apple opt]# mysqladmin -u root password
New password: 
Confirm new password:

Log in to MySQL test (it is proved to be successful if all databases can be displayed. What is written later is random play, which can be skipped)

[root@apple opt]# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.5.52 MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

//Show all databases
mysql> show databases;
| Database           |
| information_schema |
| mysql              |
| performance_schema |
| test               |
4 rows in set (0.00 sec)

//New database
mysql> create database happy;
Query OK, 1 row affected (0.00 sec)

//new table
mysql> create table t_happy(
    -> happy_id int auto_increment primary key,
    -> happy_name char(100),
    -> happy_price double(10,2));
Query OK, 0 rows affected (0.03 sec)

//Table structure
mysql> desc t_happy;
| Field       | Type         | Null | Key | Default | Extra          |
| happy_id    | int(11)      | NO   | PRI | NULL    | auto_increment |
| happy_name  | char(100)    | YES  |     | NULL    |                |
| happy_price | double(10,2) | YES  |     | NULL    |                |
3 rows in set (0.00 sec)

mysql> insert into t_happy(happy_name,happy_price) values("eat","10.0");
Query OK, 1 row affected (0.00 sec)

mysql> select * from t_happy;
| happy_id | happy_name | happy_price |
|        1 | eat        |       10.00 |
1 row in set (0.00 sec)

windows client logs in to MySQL server of Linux

Error prompt intercepted by firewall (you can also test the connection in the database management tool of windows and read what is wrong)

Solve the problem by turning off the firewall server

systemctl stop firewalld.service
systemctl disable firewalld.service

Connection rejected by MySQL itself

Set the MySQL server to allow access to any host address

Execute SQL statement


Restart mysql

mysql> quit
[root@localhost opt]# systemctl restart mysql.service

Solve the problem of character scrambling

After installing mariadb, you need to modify the character set, otherwise the data in the built database will be garbled in Chinese

View character related variables

You need to change all of Latin 1 to utf-8

mysql> show variables like "%char%";
| Variable_name            | Value                      |
| character_set_client     | utf8                       |
| character_set_connection | utf8                       |
| character_set_database   | latin1                     |
| character_set_filesystem | binary                     |
| character_set_results    | utf8                       |
| character_set_server     | latin1                     |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
8 rows in set (0.00 sec)

Prepare MySQL configuration file

Put / usr/share/mysql's my small CNF, copy it to / etc and rename it my cnf

cp /usr/share/mysql/my-small.cnf /etc/my.cnf

vim /etc/my.cnf

Add character set server = utf8 at the end of the configuration in the [mysqld] section. Note: be sure to enter the editing mode and paste again!

port            = 3306
socket          = /var/lib/mysql/mysql.sock
key_buffer_size = 16K
max_allowed_packet = 1M
table_open_cache = 4
sort_buffer_size = 64K
read_buffer_size = 256K
read_rnd_buffer_size = 256K
net_buffer_length = 2K
thread_stack = 128K

Restart MySQL service

systemctl restart mysql.service

View character set related variables

mysql> show variables like "%char%";
| Variable_name            | Value                      |
| character_set_client     | utf8                       |
| character_set_connection | utf8                       |
| character_set_database   | utf8                       |
| character_set_filesystem | binary                     |
| character_set_results    | utf8                       |
| character_set_server     | utf8                       |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
8 rows in set (0.00 sec)

Re create database, create database table, insert Chinese character data verification.

Install redis

Upload the tar package to the Linux server / opt file directory


Unzip the tar package

tar -zxvf /opt/redis-4.0.2.tar.gz
Install the C language compilation environment (it is recommended to take a snapshot first)
yum install -y gcc-c++

Because you want to modify the configuration file, back up src/Makefile

cp src/Makefile src/Makefile.bak

Open profile

vim src/Makefile

Modify the installation path of the configuration file


Compile in the redis decompression directory

[root@localhost redis-4.0.2]# make


make install

Start Redis server


Shut down Redis server

/usr/local/redis/bin/redis-cli shutdown

Install Google browser


yum install ./google-chrome-stable_current_x86_64.rpm

By default, it cannot be run by root user. Right click to open the attribute and add the following content after the command


Topics: Linux Google JDK Redis Tomcat