mysql安装

MYSQL数据库安装文档

 

本文档是MYSQL-5.6.25/5.7.X MARIADB在CENTOS 6.5 64位版本上安装的文档，经过测试并没有发现问题。

安装以前先查看服务器里是否有老版本的MYSQL已经被安装了

rpm -qa |grep mysql

如果有就删除掉旧版本的MYSQL即可

rpm -e （上面那条命令得到的信息） --nodeps

 

一.解压 软连接 改目录名称

cd /usr/local

解压

tar xzvf mysql-5.6.25-linux-glibc2.5-x86_64.tar.gz

改目录名称

mv mysql-5.6.25-linux-glibc2.5-x86_64 mysql

 

二.创建目录

mkdir -p /data/mysql_data

mkdir -p /data/mysql_log

mkdir -p /data/log-bin

groupadd mysql

useradd -g mysql mysql

chown -R mysql.mysql /data/mysql_data /data/mysql_log /data/log-bin

chown -R mysql.mysql /usr/local/mysql

 

三.my.cnf(根据自己需求填写，以下只是个大概的例子)

vi /etc/my.cnf

[mysqld]

# GENERAL #

user = mysql

default-storage-engine = InnoDB

socket = /data/mysql_data/mysql.sock

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

port = 3306

# MyISAM #

key_buffer_size = 1000M

myisam_recover = FORCE,BACKUP

# SAFETY #

max_allowed_packet = 16M

max_connect_errors = 1000000

skip_name_resolve

# DATA STORAGE #

datadir = /data/mysql_data/

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

# 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 = 192.168.1.66

 

四.配置系统服务

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

 

#############################################

vi /etc/init.d/mysqld

修改两处位置：

basedir=/usr/local/mysql

datadir=/data/mysql_data

#############################################

 

五.执行如下命令

chmod 755 /etc/init.d/mysqld

chkconfig --add mysqld

chkconfig --level 345 mysqld on

 

六.初始化数据库

cd /usr/local/mysql

./scripts/mysql_install_db --user=mysql --defaults-file=/etc/my.cnf

 

vim /etc/profile

export MYSQL_HOME="/usr/local/mysql"

export PATH="$PATH:$MYSQL_HOME/bin"

保存退出

. /etc/profile

 

 

七.启动数据库

service mysqld start

 

mysql

 

如果出现了下面的错误：

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

用下面的命令去解决，直接复制粘贴!

ln -s /data/mysql_data/mysql.sock /tmp/mysql.sock

 

因为有时不正常启动或关闭或TMP目录资源回收都会使得/tmp/mysql.sock文件丢失 造成ERROR 2002错误重复出现，解决方法如下

vi /etc/rc.local

 

rm -rf /tmp/mysql.sock

ln -s /data/mysql_data/mysql.sock /tmp/mysql.sock

 

 

MYSQL安装完成以后的配置:

mysqladmin -u root password 'root' #修改root用户密码，如果有问题mysqladmin: connect to server at 'localhost' failed

mysql -u root -p #登录mysql,需要输入密码

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;

GRANT ALL PRIVILEGES ON *.* TO 'hive'@'%' IDENTIFIED BY 'hive' WITH GRANT OPTION;

#允许root用户远程访问

mysql>FLUSH PRIVILEGES; #刷新权限

 

删除匿名账户

UPDATE mysql.user set password=PASSWORD('your password') where user='';

FLUSH PRIVILEGES;