How to quickly install MySQL 5.7.17 under CentOS 6.5

CentOS 6.5 How to quickly install MySQL 5.7.17

This article introduces in detail “CentOS 6.5 How to quickly install MySQL 5.7.17”, Detailed content , The steps are clear , The details are handled properly , Hope this article “CentOS 6.5 How to quickly install MySQL 5.7.17” The article can help you solve your doubts , Let's follow Xiaobian's ideas and go deeper slowly , Let's learn new knowledge together .

1. Download installation package

from MySQL Download the latest mysql Installation package mysql-5.7.17-Linux-glibc2.5-x86_64.tar.gz

Be careful , Be sure to download .tar.gz, Don't download that .tar My bag

Upload the installation package to /opt Under the table of contents ：

2. Check if the library file exists , Delete... If it exists

[[email protected] ~]# rpm -qa | grep mysqlmysql-libs-5.1.73-3.el6_5.x86_64
[[email protected] ~]# rpm -e mysql-libs-5.1.73-3.el6_5.x86_64 --nodeps/sbin/ldconfig: File /usr/lib64/libpq.so.5.8 is empty, not checked.
[[email protected] ~]# rpm -qa | grep mysql

3.Mysql Depend on libaio library

yum search libaio  # search for infoyum install libaio # install library

4. Perform the following steps to install Mysql

groupadd mysql
useradd -r -g mysql -s /bin/false mysqlcd /usr/localtar -zxvf /opt/mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz -C /opt/
ln -s /opt/mysql-5.7.17-linux-glibc2.5-x86_64 mysqlcd mysql
mkdir mysql-files
chmod 750 mysql-files
chown -R mysql .
chgrp -R mysql .
bin/mysqld --initialize --user=mysql

If an error is reported in this step, it is as follows ：

[ERROR] –initialize specified but the data directory has files in it. Aborting.

Solution ：

rm -rf /var/lib/mysql/

Re execute the above command , Prompt generated a temporary password ：

2017-01-03T09:12:33.748807Z 1 [Note] A temporary password is generated for [email protected]: =*-gFoje>1Pr

Performing this step should generate a data Catalog , If not generated , That must be because there are already installed in the system mysql, Follow the steps first 2 Unload , Then execute again

bin/mysqld --initialize --user=mysql
bin/mysql_ssl_rsa_setup
chown -R root .
chown -R mysql data mysql-files
bin/mysqld_safe --user=mysql &

The following step is optional

cp support-files/mysql.server /etc/init.d/mysqld

5. Configuration after installation

modify /usr/local/mysql/support-files/my-default.cnf

basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
port = 3306

Make a copy to /etc/ Under the table of contents , Rename it to my.cnf

cp my-default.cnf /etc/my.cnf

add to mysql environment variable

vim /etc/profileexport MYSQL_HOME=/usr/local/mysqlexport PATH=$MYSQL_HOME/bin:$PATHsource /etc/profile

6. start-up mysql

service mysqld start

Successful launch ：

[[email protected] support-files]# service mysqld startStarting MySQL.Logging to '/usr/local/mysql/data/ambari.err'.
.                                                          [  OK  ]
[[email protected] support-files]# service mysqld statusMySQL running (8010)                                       [  OK  ]

This step may lead to unsuccessful startup , The error message is as follows ：

MySQL: Starting MySQL….. ERROR! The server quit without updating PID file

7. modify root password ：

use

mysql -uroot -p

When logging in , Enter previously recorded root password , The prompt password is incorrect , Can't , We have to revise it ourselves root It's a password

The specific steps are as follows ：

step1:

vim /etc/my.cnf

stay [mysqld] Next add a line skip-grant-tables

step2:

service mysqld restart after , You can directly use mysql Get into

mysql> update mysql.user set authentication_string=password('root') where user='root' and Host = 'localhost';
mysql> flush privileges;
mysql> quit;

step3:

take /etc/my.cnf File restore , Restart mysql:service mysqld restart, It can be used at this time mysql -u root -p’root’ Into the

step4:

Enter into sql After that, you can change the password once through the following command , Otherwise, no other operation can be carried out ：

mysql> SET PASSWORD = PASSWORD('mysql');

step5:

stay sql Console execution show databases; give the result as follows ：

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.00 sec)

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