Installing mysql-5.7 for Linux (centos7)

1. Download from official website mysql-5.7.14-linux-glibc2.5-x86_64.tar.gz Official website ：http://dev.mysql.com/downloads/mysql/

# wget -chttp://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.14-linux-glibc2.5-x86_64.tar.gz

2. establish mysql User group / user , data Directory and its user directory

# groupadd mysql
# useradd -r -g mysql mysql
# mkdir -p /data/mysqldb

3. Unzip the installation package and copy the contents of the unzipped package to mysql Installation directory /home/mysql

# tar -xzvf mysql-5.7.14-linux-glibc2.5-x86_64.tar.gz
# cd mysql-5.7.14-linux-glibc2.5-x86_64
# mv * /usr/local/mysql
# mkdir -p /usr/local/mysql establish mysql The installation directory , You can decompress mysql-5.7.14-linux-glibc2.5-x86_64 Move the files under the folder to the directory

4. initialization mysql database cd /usr/local/mysql

\# ./bin/mysql\_install\_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysqldb  
2015-11-1002:09:17 \[WARNING\] mysql\_install\_db is deprecated. Please consider switching to mysqld --initialize  
2015-11-1002:09:23 \[WARNING\] The bootstrap logisn't empty:  
2015-11-1002:09:23 \[WARNING\] 2015-11-10T10:09:18.114182Z 0 \[Warning\] --bootstrap is deprecated. Please consider using --initialize instead  
2015-11-10T10:09:18.129343Z 0 \[Warning\] Changed limits: max\_open\_files: 1024 (requested 5000)  
2015-11-10T10:09:18.129408Z 0 \[Warning\] Changed limits: table\_open\_cache: 431 (requested 2000)

p.s. : mysql5.7 New characteristics ： You can see that from the top ,mysql_install_db It's no longer recommended , It is suggested to change it to mysqld --initialize Complete instance initialization .

\# ./bin/mysqld --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysqldb --initialize

 change to the use of sth.  mysqld --initialize  after , If  datadir  There are already data files in the target directory pointed to ,  The following prompt will appear ：

\# ./bin/mysqld --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysqldb --initialize

2016-04-08T01:46:53.153530Z 0 \[Warning\] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit\_defaults\_for\_timestamp server option (see documentation for more details).

2016-04-08T01:46:53.155856Z 0 \[ERROR\] --initialize specified but the data directory has files in it. Aborting.

2016-04-08T01:46:53.155879Z 0 \[ERROR\] Aborting

 It can be seen from the above that ,  We need to empty mysql Of data Catalog ,  Execute the emptying command as follows ：

\# cd /data/mysqldb# rm -fr \*

Then re execute the initialization command as follows ：

[[email protected] /] cd /usr/local/mysql
[[email protected] mysql ] ./bin/mysqld --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysqldb --initialize
[[email protected] ]2016-04-08T01:47:57.556677Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2016-04-08T01:47:59.945537Z 0 [Warning] InnoDB: New logfiles created, LSN=45790
2016-04-08T01:48:00.333528Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2016-04-08T01:48:00.434908Z 0 [Warning] No existing UUID has been found, so we assume that this is thefirsttime that this server has been started. Generating anew UUID: ece26421-fd2b-11e5-a1e3-00163e001e5c.2016-04-08T01:48:00.440125Z 0 [Warning] Gtid table is not ready to be used. Table ‘mysql.gtid_executed’ cannot be opened.
2016-04-08T01:48:00.440904Z 1 [Note] A temporary password is generated for [email protected]: **mjT,#x_5sW

Remember the random password above , Above **mjT,#x_5sW, Below we need to use... When changing the password .

5. Check whether it can be started mysql service

# cd /usr/local/mysql# ./support-files/mysql.server start

Starting MySQL. ERROR! The server quit without updating PID file (/usr/local/mysql/data/localhost.localdomain.pid). # Not through cmake Edited , Initializing the database will fail ;

terms of settlement ：vim support-files/mysql.server Appoint datadir=/data/mysqldb basedir=/usr/local/mysql

Starting MySQL… SUCCESS!

If used instead /usr/local/mysql by mysql Installation directory basedir, The following error will appear when starting the service ：
[[email protected] mysql] #./support-files/mysql.server start
[[email protected] ]./support-files/mysql.server: line 276: cd: /usr/local/mysql: No such fileor directory
[[email protected] ] Starting MySQL ERROR! Couldn’t find MySQL server (/usr/local/mysql/bin/mysqld_safe)

From the top mysql Of tar.gz The default installation directory of the installation package is /usr/local/mysql, At this time, we need to modify /support-files/mysql.server Of documents basedir and datadir The directory path is where our environment is located mysql Of basedir and datadir route , as follows ：

• [[email protected] ]
• # vim support-files/mysql.server
• --------------------------
• …
• basedir=/usr/local/mysql
• datadir=/data/mysqldb
• …
• --------------------------
• # ./support-files/mysql.server start
• Starting MySQL… SUCCESS!

6. Create soft link

\# ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql

7. create profile

Will be generated by default my.cnf Backup

\# mv /etc/my.cnf /etc/my.cnf.bak

Get into mysql The installation directory of supports file directory

\# cd /usr/local/mysql/support-files

Copy the profile template as new mysql The configuration file ,

\# cp my-default.cnf /etc/my.cnf

New profile options can be modified as needed , Do not modify the configuration options , mysql Run according to the default configuration parameters .

Here is how I modified the configuration file /etc/my.cnf, Set the code to utf8 In case of garbled code

\# vim /etc/my.cnf\[mysqld\]basedir = /usr/local/mysqldatadir = /data/mysqldbcharacter\_set\_server=utf8init\_connect='SET NAMES utf8'\[client\]default-character-set=utf8

8. To configure mysql The service starts automatically

Copy the startup file to /etc/init.d/ Give the same command as mysqld

\# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld

Add execution permission

\# chmod 755 /etc/init.d/mysqld

Check that there is no... In the list of self startup items mysqld This , Add if not mysqld：

\# chkconfig --list mysqld# chkconfig --add mysqld

Set up MySQL stay 345 Level auto start

\# chkconfig --level 345 mysqld on

Or use this command to set the boot ：

\# chkconfig mysqld on

9. mysql Start of service / restart / stop it

start-up mysql service

\# service mysqld start

restart mysql service

\# service mysqld restart

stop it mysql service

\# service mysqld stop

You can delete or comment out the sentence at the bottom of the file first ：sql\_mode=NO\_ENGINE\_SUBSTITUTION,STRICT\_TRANS\_TABLES

10. initialization mysql user root Password

First the mysql Service stopped

\# service mysqld stop

Get into mysql The installation directory , perform ：

# cd /usr/local/mysql
# ./bin/mysqld_safe --skip-grant-tables --skip-networking&
[1] 6225
[[email protected] mysql]# 151110 02:46:08 mysqld_safe Logging to ‘/data/mysqldb/localhost.localdomain.err’.151110 02:46:08 mysqld_safe Starting mysqld daemon with databases from /data/mysqldb

Open another terminal (p.s. If it is ssh Connect logged in , Create another ssh Connect to ）, Perform the following operations ：

# mysql -u root mysql# When running this sentence , You need to execute the previous sentence first ：./bin/mysqld_safe

Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -A********************************************************************Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.

mysql> use mysql;Database changed
mysql> UPDATE user SET password=PASSWORD(‘root’) WHERE user=‘root’;ERROR 1054 (42S22): Unknown column ‘password’ in ‘field list’
mysql> update user set authentication_string = PASSWORD(‘root’) where user = ‘root’;
Query OK, 1 row affected, 1 warning (0.02 sec)Rows matched: 1 Changed: 1 Warnings: 1

#MySQL5.7 New characteristics ,Users Not in the table password Field ,authentication_string Namely password

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> \s--------------mysql Ver 14.14 Distrib 5.7.9, for linux-glibc2.5 (x86_64) using EditLine wrapperConnection id: 2Current database: mysqlCurrent user: [email protected]: Not in useCurrent pager: stdoutUsing outfile: ''Using delimiter: ;Server version: 5.7.9 MySQL Community Server (GPL)Protocol version: 10Connection: Localhost via UNIX socketServer characterset: utf8Db characterset: utf8Client characterset: utf8Conn. characterset: utf8UNIX socket: /tmp/mysql.sockUptime: 4 min 47 secThreads: 1 Questions: 43 Slow queries: 0 Opens: 127 Flush tables: 1 Open tables: 122 Queries per second avg: 0.149--------------
mysql> exit;Bye

Here we are , Set the mysql user root And ensure that mysql The code set is utf8, Note that the above , The new version of the mysql.user The password field in the table is authentication\_string

Shortcut key ctrl + c stop it # ./bin/mysqld\_safe ... command , Restart mysql service , Connect with a new password mysql：

# service mysqld startStarting MySQL SUCCESS!
[[email protected] bin]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 3Server version: 5.7.9************************************************************************Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.
mysql> use mysql;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
mysql > exit;Bye

Why ？ Ask me to change my password , We go through mysqladmin To change the password , Enter the original password first, which is the new password modified in the above steps root, Then set a new password ！！！

# cd /usr/local/mysql
# ./bin/mysqladmin -u root -p password
# This password Is the parameter , Not to be set to root Value of password Enter password: New password:
Confirm new password:
Warning: Since password will be sent to server in plain text, use ssl connection to ensure password safety.# mysql -uroot -pEnter password: Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 6Server version: 5.7.9 MySQL Community Server (GPL)Copyright 2000, 2015, Oracle and/or its affiliates. All rights reserved.******************************************************************************Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.mysql> use mysql;Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -ADatabase changedmysql>

Or directly ：

# ./bin/mysqladmin -uroot -p’g!#l4:6+rMnT’ password ‘root’

mysqladmin: [Warning] Using a password on the command line interface can be insecure.Warning: Since password will be sent to server in plain text, use ssl connection to ensure password safety.

among ,g!#l4:6+rMnT That's what we're using mysqld --initialize Remember the random password

11. mysql Remote authorization

The format is as follows ：

mysql> grant all \[privileges\] on db\_name.table\_name to 'username'@'host' identified by 'yourpassword';

Examples are as follows ：

mysql> `grant` all privileges on \*.\* to 'root'@'%' identified by 'root';
Query OK, 0 rows affected, 1 warning (0.04 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

Or use

mysql> grant all on \*.\* to 'root'@'%' identified by 'root';

Here we are , It's done mysql Installation And configuration ！！！

notes ： Last windows The remote access linux-mysql The connection fails , There are no open ports 3306： solve ：iptables -I INPUT -p tcp --dport 3306 -j ACCEPT

Verified installation MySQL5.7 Unwanted cmake.