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How to install mysql in centos7? In view of this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

one。 Uninstall the old version

Use the following command to check if MySQL Server is installed

Rpm-qa | grep mysql

If so, uninstall it with the following command

Rpm-e mysql / / normal delete mode rpm-e-- nodeps mysql / / forcefully delete mode. If you use the above command to delete other dependent files, you can use this command to delete them.

Two: install MySQL

1. Installation dependency

Yum-y install make gcc-c++ cmake bison-devel ncurses-devel

two。 Get the source code (it is recommended to download http://mirrors.sohu.com/mysql... from the image of sohu

Mysql5.7 needs the boost library. It is difficult to find a suitable version on the Internet. It is recommended to download the mysql version with the boost library directly.

Wget http://mirrors.sohu.com/mysql/MySQL-5.7/mysql-boost-5.7.24.tar.gztar xvf mysql-boost-5.7.24.tar.gzcd mysql-5.7.24

3. Compilation and installation

Cmake\-DCMAKE_INSTALL_PREFIX=/usr/local/mysql\-DMYSQL_DATADIR=/usr/local/mysql/data\-DSYSCONFDIR=/usr/local/mysql/etc\-DWITH_MYISAM_STORAGE_ENGINE=1\-DWITH_INNOBASE_STORAGE_ENGINE=1\-DWITH_MEMORY_STORAGE_ENGINE=1\-DWITH_READLINE=1\-DMYSQL_UNIX_ADDR=/usr/local/mysql/data/mysql.sock\-DMYSQL_TCP_PORT=3306\-DENABLED_LOCAL_INFILE=1\-DWITH_PARTITION_STORAGE_ENGINE=1\-DEXTRA_CHARSETS=all\-DDEFAULT _ CHARSET=utf8\-DDEFAULT_COLLATION=utf8_general_ci\-DDOWNLOAD_BOOST=1-DWITH_BOOST=./boostmake & & make install

The compiled parameters can be referred to http://dev.mysql.com/doc/refm....

Three: configure MySQL

Use the following command to see if there are any mysql users and user groups

Cat / etc/passwd # View user list cat / etc/group # View user group list

If not, create it.

Groupadd mysqluseradd-g mysql mysql

Modify / usr/local/mysql permissions

Chown-R mysql:mysql / usr/local/mysqlmysql5.7.18 will no longer provide the default mysql configuration file Here we find a simple configuration on the Internet, vi / etc/my.cnf and then write the content [client] port = 3306default-character-set=utf8 [mysqld] # General configuration option basedir = / usr/local/mysqldatadir = / usr/local/mysql/dataport = 3306character-set-server=utf8default_storage_engine = InnoDBsql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER NO_ENGINE_SUBSTITUTION configuration service script cp / usr/local/mysql/support-files/mysql.server / etc/init.d/mysqlchkconfig mysql on # add to boot startup item service mysql start # Startup mysql add the mysql executable to the path directory, vi / etc/profilePATH=/usr/local/mysql/bin:$PATHexport PATH

Then execute source / etc/profile

Four: initialize mysql

1. Execute the initialization script (the last line of successful initialization will generate a mysql root password. Note that, or you can initialize an account with an empty password with. / mysqld-- initialize--insecure)

Cd / usr/local/mysql/bin./mysqld-initialize-user=mysql-basedir=/usr/local/mysql-datadir=/usr/local/mysql/data...2019-04-11T14:34:15.922856Z 1 [Note] A temporary password is generated for root@localhost: / rTmud (Th6Yy

two。 Firewall opens port 3306

Add ports to Firewalld as follows:

Firewall-cmd-- zone=public-- add-port=3306/tcp-- permanentfirewall-cmd-- reload's answer to the question on how to install mysql in centos7 is shared here. I hope the above content can be of some help to you. If you still have a lot of doubts to solve, you can follow the industry information channel for more related knowledge.

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