mysql安装.txt

---------------------------------------------------------------

Centos7上卸载Mariadb数据库

 

查询所安装的MariaDB组件：

[root@localhost logs]# rpm -qa | grep Maria*
MariaDB-server-5.5.49-1.el7.centos.x86_64
MariaDB-common-5.5.49-1.el7.centos.x86_64
MariaDB-client-5.5.49-1.el7.centos.x86_64

 

卸载数据库：

[root@localhost logs]# yum -y remove mari*

 

删除数据库文件：

[root@localhost logs]# rm -rf /var/lib/mysql/*

--------------------

新的centos 7 默认已经 安装mariab

1. 先关闭 mariab：
systemctl stop mariadb

2. 安全启动

--  ps -ef | grep -i mysql
/usr/bin/mysqld_safe --skip-grant-tables >/dev/null 2>&1 &

3. 等待5秒，进入mysql
/usr/bin/mysql -u root mysql

4. 修改数据库密码
update user set password = Password('password') where User = 'root';

flush privileges;

----------

可以不用

yum install mariadb mariadb-server
systemctl start mariadb ==> 启动mariadb
systemctl enable mariadb ==> 开机自启动
mysql_secure_installation ==> 安全配置向导
mysql -u root -p root ==> 测试登录

---------------------------------------------------------------

 

1、下载mysql 下载地址：http://dev.mysql.com/downloads/mysql/5.6.html#downloads

wget http://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.33-linux-glibc2.5-x86_64.tar.gz

 

2、#解压

tar -zxvf mysql-5.6.33-linux-glibc2.5-x86_64.tar.gz

 

3、 添加用户组和用户

groupadd mysql

useradd -g mysql mysql

mkdir -p /home/mysql /home/mysql/data /home/mysql/log

cp mysql-5.6.33-linux-glibc2.5-x86_64/* /home/mysql/

chown -R mysql:mysql /home/mysql/

 

4、创建配置my.cnf

创建my.cnf文件

vim /etc/my.cnf

复制my.cnf

复制代码

[client]

port = 3306

socket = /tmp/mysql.sock

 

[mysqld]

server_id=10

port = 3306

user = mysql

character-set-server = utf8mb4

default_storage_engine = innodb

log_timestamps = SYSTEM

socket = /tmp/mysql.sock

basedir = /home/mysql

datadir = /home/mysql/data

pid-file = /home/mysql/data/mysql.pid

max_connections = 1000

max_connect_errors = 1000

table_open_cache = 1024

max_allowed_packet = 128M

open_files_limit = 65535

#####====================================[innodb]==============================

innodb_buffer_pool_size = 1024M

innodb_file_per_table = 1

innodb_write_io_threads = 4

innodb_read_io_threads = 4

innodb_purge_threads = 2

innodb_flush_log_at_trx_commit = 1

innodb_log_file_size = 512M

innodb_log_files_in_group = 2

innodb_log_buffer_size = 16M

innodb_max_dirty_pages_pct = 80

innodb_lock_wait_timeout = 30

innodb_data_file_path=ibdata1:1024M:autoextend

 

#####====================================[log]==============================

log_error = /home/mysql/log/mysql-error.log

slow_query_log = 1

long_query_time = 1

slow_query_log_file = /home/mysql/log/mysql-slow.log

 

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

 

5、安装 初始化mysql数据库

cd /home/mysql/

./bin/mysqld --user=mysql --basedir=/home/mysql --datadir=/home/mysql/data --initialize

./bin/mysqld --user=mysql --basedir=/data/opt/mysql/ --datadir=/data/opt/mysql/data/ --initialize

 

6、 检测下是否能启动mysql服务

# cd /home/mysql

# ./support-files/mysql.server start

Starting MySQL.. SUCCESS!

 

启动成功以后,修改root密码

mysql -uroot -p生成的密码

登录（密码在log里面找）：  bin]# ./mysql -u root -p

set password=password("youpassword");

flush privileges;

 

mysql远程授权

grant all privileges on *.* to 'root'@'%' identified by 'youpassword';

flush privileges;

 

7. 配置mysql服务开机自动启动

拷贝启动文件到/etc/init.d/下并重命令为mysqld

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

chmod u+x /etc/init.d/mysqld

 

检查自启动项列表中没有mysqld这个，如果没有就添加mysqld：

# chkconfig --list mysqld

# chkconfig --add mysqld

设置MySQL在345等级自动启动

# chkconfig --level 345 mysqld on

或用这个命令设置开机启动：

# chkconfig mysqld on

 

8. mysql服务的启动/重启/停止

启动mysql服务

# service mysqld start

重启mysql服务

# service mysqld restart

停止mysql服务

# service mysqld stop

 

 

 

 

 

报错如上图，需要安装libaio.so.1

64位系统安装：

wget http://mirror.centos.org/centos/6/os/x86_64/Packages/libaio-0.3.107-10.el6.x86_64.rpm

rpm -ivh libaio-0.3.107-10.el6.x86_64.rpm

 

 

1
apt-get install libaio1 libaio-dev
On Redhat/Fedora/CentOS:

1
yum install libaio