At present ali cloud, Tencent cloud is better. I use Tencent Cloud. New users suggest direct purchase of 3 years, relatively preferential.

Connection terminals

ssh root@ip
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Changing host names

For example, mine looks like this:

[root@VM-0-4-centos ~]#

#Viewing host Names
hostname
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Change steps:

  1. Delete the hostname in the /etc/hostname file and replace it with the new hostname
  2. Update the 127.0.1.1 < hostname > entry in the /etc/hosts file
  3. Restart reboot

Change password

passwd
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Add a login welcome diagram

As shown in figure

Modify the contents of the /etc/motd file and save the modification.

Both online images and text can be converted to ASCII ascii-art-generator.org

Switch to bash, which is good

#Displays the currently installed shell
cat /etc/shells
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Personally, I’d prefer to use the most common bash, after allzshTo install.

Install the software

JDK

The RPM version

  1. Download JDK -8u261-linux-x64.rpm from oracle’s official website

  2. Adding Execution Permission

    chmod +x jdk-8u131-linux-x64.rpm
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  3. Run RPM to install

    rpm -ivh jdk-8u131-linux-x64.rpm
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    (I installed the default setting environment variables, the following is not done)

  4. Modify the configuration file /etc/profile. Add and save as follows:

    Export JAVA_HOME= /usr/jav/jdk1.8.0_131 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}Copy the code

  5. To take effect

    source /etc/profile
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  6. Verify success

    java -version
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Tomcat

  1. You have obtained the installation package apache-tomcat-9.0.37.tar.gz

  2. Unpack the

    Tar ZXVF - apache tomcat - 9.0.37. Tar. GzCopy the code

  3. The bin directory in the installation directory is displayed

    Sh & # start the server, & vxconfigd./shutdown.sh # shutdown the serverCopy the code

For details about how to install an SSL certificate, see Tomcat Learning: Installing an SSL Certificate

Mysql

The version used here is 5.7.22. The version varies slightly. Prepare the installation package: mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz

Recommended conventions

  • Mysql directory installation location (basedir) : /usr/local/mysql
  • Database location (datadir) : /data/mysql

Note: do not spell the letter wrong ah, or pit yourself

Unzip the package to the target location

#Decompression packageThe tar ZXVF mysql - 5.7.22 - Linux - glibc2.12 - x86_64. Tar. Gz#Move and rename to the installation directoryMysql - 5.7.22 - Linux - mv glibc2.12 x86_64 / usr/local/mysqlCopy the code

Create the data warehouse directory

mkdir -p /data/mysql
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Create a mysql user, group, and directory

#Create an MSYQL group
groupadd mysql 
#Create an MSYQL user to prohibit shell login
useradd -r -s /sbin/nologin -g mysql mysql -d /usr/local/mysql
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Change the owner of the directory

cd /usr/local/mysql
chown -R mysql .
chgrp -R mysql .
chown -R mysql /data/mysql
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Configuration parameters

cd /usr/local/mysql
bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql
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Explanation:

  • --basedir=/usr/local/mysql: Installation directory
  • --datadir=/data/mysql: Data directory

Note here that the generated temporary password is recorded, usually in the last line

Possible errors:

  • error while loading shared libraries: libnuma.so.1

    Solution: If the mysql server is installed, an error message is displayed. Centos Centos yum -y install numactl Ubuntu sudo apt-get install numactl

Modify the system configuration file

cd /usr/local/mysql/support-files
cp mysql.server /etc/init.d/mysql
vim /etc/init.d/mysql

#Modify the following:
basedir=/usr/local/mysql
datadir=/data/mysql
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Start the mysql

/etc/init.d/mysql start
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Possible errors:

  • mysqld_safe error

    Install Mariadb on Linux[CentOS] server. Install Mariadb on CentOS.

    #Query installed Mariadb
rpm -qa | grep mariadb

#uninstallRPM -e --nodeps File name
#Delete the my.cnf file in the etc directory
#Uninstallation may delete the file, so make sure
rm /etc/my.cnf
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    Execute again, success

  1. The login

    #Log in and enter the password mentioned earlier
mysql -uroot -p
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    -bash: mysql: command not found

    ln -s /usr/local/mysql/bin/mysql /usr/bin
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  2. Change the password

    mysql> set password=password('password');
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    Set the host address of the root account.

    mysql>grant all privileges on *.* to 'root'@The '%' identified by 'password';
mysql>flush privileges;
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    This indicates that all privileges, including remote access, are granted to the local IP address, and the % percent sign indicates that any IP address is allowed to access the database.

Configure the automatic startup of mysql

vim /etc/profile
#Add:
export PATH=/usr/local/mysql/bin:$PATH
#Exit file execution
source /etc/profile

chmod 755 /etc/init.d/mysql
chkconfig --add mysql

chkconfig --level 345 mysql on
#Viewing Service Status
chkconfig --list mysql

#Mysql > Update mysql
service mysql status

#Stop the mysql
service mysql stop

#Start the mysql
service mysql start
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FTP

vsftp

Check whether it has been installed

rpm -qa | grep vsftpd
#If there are deletions
rpm -e vsftpd
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Installed VSFTP

yum -y install vsftpd

#Launch VSFTPD: 
service vsftpd start
#Stop VSFTPD: 
service vsftpd stop
#Restart VSFTPD: 
service vsftpd restart
#VSFTPD: 
service vsftpd status
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configuration

Default configuration file /etc/vsftp/vsftpd. conf(Back up the configuration file before changing it.)

Adding a Local User

useradd -s /sbin/nologin -d /home/ftpuser ftpuser
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Change the password

passed ftpuser
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References:

  1. Mysql5.7 Linux Installation tutorial
  2. Bin /mysqld: error while loading shared libraries: libnuma.so.1: install mysql