安装MySQL5.6

1. 安装必要的组件

# yum install –y autoconf automake imake libxml2-devel expat-devel cmake gcc gcc-c++ libaio libaio-devel bzr bison libtool ncurses5-devel

2. 下载解压mysql软件

# cd /usr/local/src
# wget -c http://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.14-linux-glibc2.5-x86_64.tar.gz/from/http://cdn.mysql.com/ -O mysql-5.6.14-linux-glibc2.5-x86_64.tar.gz
# tar zxvf mysql-5.6.14-linux-glibc2.5-x86_64.tar.gz –C ../
# cd /usr/local/
# ln -s mysql-5.6.14-linux-glibc2.5-x86_64 mysql

3. 创建Mysql用户组和用户，及数据库存放目录：

# mkdir -p /data/mysql_data_3306
# mkdir -p /data/mysql_log
# mkdir -p /data/log-bin
# groupadd mysql
# useradd mysql -g mysql -M -s /sbin/nologin
# chown -R mysql.mysql /data/mysql_data_3306 /data/mysql_log /data/log-bin
# chown -R mysql.mysql /usr/local/mysql-5.6.14-linux-glibc2.5-x86_64

4. 配置文件（依具体环境）

# vi /etc/my.cnf

[mysqld]
# GENERAL #
user = mysql
default-storage-engine = InnoDB
socket = /data/mysql_data_3306/mysql.sock
pid-file = /data/mysql_data_3306/mysql.pid
port = 3306
# MyISAM #
key_buffer_size = 1344M
myisam_recover = FORCE,BACKUP
# SAFETY #
max_allowed_packet = 16M
max_connect_errors = 1000000
skip_name_resolve
# DATA STORAGE #
datadir = /data/mysql_data_3306/
long_query_time = 1
# BINARY LOGGING #
log-bin = /data/log-bin/mysql-bin-3306
expire-logs-days = 14
sync-binlog = 1
server-id = 1
max_binlog_size = 500M
# REPLICATION #
relay-log = /data/log-bin/relay-bin-3306
slave-net-timeout = 60
# CACHES AND LIMITS #
tmp_table_size = 32M
max_heap_table_size = 32M
max_connections = 500
thread_cache_size = 50
open_files_limit = 65535
table_definition_cache = 4096
table_open_cache = 4096
# INNODB #
innodb_data_file_path = ibdata1:128M;ibdata2:10M:autoextend
innodb_flush_method = O_DIRECT
innodb_log_files_in_group = 2
innodb_lock_wait_timeout = 50
innodb_log_file_size = 256M
innodb_flush_log_at_trx_commit = 1
innodb_file_per_table = 1
innodb_thread_concurrency = 8
innodb_buffer_pool_size = 8G
# LOGGING #
log-error = /data/mysql_log/mysql-error-3306.log
log-queries-not-using-indexes = 1
slow-query-log = 1
long_query_time = 1
slow-query-log-file = /data/mysql_log/mysql-slow-3306.log
explicit_defaults_for_timestamp = 1
# FOR SLAVE # 
#binlog-format = ROW 
#log-slave-updates = true 
#gtid-mode = on 
#enforce-gtid-consistency = true 
#master-info-repository = TABLE 
#relay-log-info-repository = TABLE 
#sync-master-info = 1 
#slave-parallel-workers = 2 
#binlog-checksum = CRC32 
#master-verify-checksum = 1 
#slave-sql-verify-checksum = 1 
#binlog-rows-query-log_events = 1 
#report-port = 3306 
#report-host = 10.1.1.10

5. 系统服务

# cp -af /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld_3306
# vi /etc/init.d/mysqld_3306
修改两处位置：
basedir=/usr/local/mysql
datadir=/data/mysql_data_3306
 
执行如下命令
# chmod 755 /etc/init.d/mysqld_3306
# chkconfig --add mysqld_3306
# chkconfig --level 345 mysqld_3306 on

6. 初始化数据库

# cd /usr/local/mysql
# ./scripts/mysql_install_db --user=mysql --defaults-file=/etc/my.cnf

7. 启动数据库进程

# service mysqld_3306 start

8. 修改root密码

# ln -s  /data/mysql_data_3306/mysql.sock /tmp/mysql.sock
#service mysqld_3306 restart
# /usr/local/mysql/bin/mysql -p -uroot -S /tmp/mysql.sock #这里直接回车就能进入数据库系统
Mysql> delete from mysql.user where user='';
Mysql> update mysql.user set password=PASSWORD(‘xxxxxxxx’) where user='root';
Mysql>flush privileges;