Linux安装mysql
我这里是安装在/usr/local/下面
1、新建一个mysql文件夹
mkdir mysql
2、将要解压的mysql复制到刚才建立的文件夹中
cp ./mysql-5.5.27-linux2.6-x86_64.tar.gz /usr/local/mysql/
3、进入刚才建立的文件夹中
cd /usr/local/mysql/
4、将文件附有执行权限
chmod 777 ./mysql-5.5.27-linux2.6-x86_64.tar.gz
5、解压文件
tar -zxvf mysql-5.5.27-linux2.6-x86_64.tar.gz
6、将解压出来的文件移动到mysql下面
mv ./mysql-5.5.27-linux2.6-x86_64/* ./
rm -rf mysql-*
8、建立mysql用户
/usr/sbin/useradd mysql -s /sbin/nologin
mkdir -p /home/mysql/3306/data/ mkdir -p /home/mysql/3306/binlog/ mkdir -p /home/mysql/3306/relaylog/ chown -R mysql:mysql /home/mysql/
/usr/local/mysql/scripts/mysql_install_db --basedir=/usr/local/mysql --datadir=/home/mysql/3306/data --user=mysql
11、建立mysql配置文件
vim /home/mysql/3306/my.cnf
[client] character-set-server = utf8 port = 3306 socket = /tmp/mysql.sock --注意，如果要配置多个端口，这里需要更改 [mysqld] event_scheduler = 1 character-set-server = utf8 replicate-ignore-db = mysql replicate-ignore-db = information_schema #replicate-ignore-table = yccms.YcLog user = mysql port = 3306 socket = /tmp/mysql.sock --同上 basedir = /usr/local/mysql datadir = /home/mysql/3306/data log-error = /home/mysql/3306/mysql_error.log pid-file = /home/mysql/3306/mysql.pid open_files_limit = 10240 back_log = 600 max_connections = 5000 max_connect_errors = 6000 table_cache = 614 external-locking = FALSE max_allowed_packet = 32M sort_buffer_size = 1M join_buffer_size = 1M thread_cache_size = 300 #thread_concurrency = 8 query_cache_size = 512M query_cache_limit = 2M query_cache_min_res_unit = 2k default-storage-engine = MyISAM thread_stack = 192K transaction_isolation = READ-COMMITTED tmp_table_size = 246M max_heap_table_size = 246M long_query_time = 3 log-slave-updates #log-bin = /home/mysql/3306/binlog/binlog binlog_cache_size = 4M binlog_format = MIXED binlog-ignore-db = mysql binlog-ignore-db = information_schema max_binlog_cache_size = 8M max_binlog_size = 1G relay-log-index = /home/mysql/3306/relaylog/relaylog relay-log-info-file = /home/mysql/3306/relaylog/relaylog relay-log = /home/mysql/3306/relaylog/relaylog expire_logs_days = 30 key_buffer_size = 256M read_buffer_size = 1M read_rnd_buffer_size = 16M bulk_insert_buffer_size = 64M myisam_sort_buffer_size = 128M myisam_max_sort_file_size = 10G myisam_repair_threads = 1 myisam_recover interactive_timeout = 120 wait_timeout = 1814400 skip-name-resolve #master-connect-retry = 10 slave-skip-errors = 1032,1062,126,1114,1146,1048,1396 server-id = 250 innodb_additional_mem_pool_size = 16M innodb_buffer_pool_size = 512M innodb_data_file_path = ibdata1:256M:autoextend innodb_file_io_threads = 4 innodb_thread_concurrency = 8 innodb_flush_log_at_trx_commit = 2 innodb_log_buffer_size = 16M innodb_log_file_size = 128M innodb_log_files_in_group = 3 innodb_max_dirty_pages_pct = 90 innodb_lock_wait_timeout = 120 innodb_file_per_table = 1 [mysqldump] quick max_allowed_packet = 32M
12、建立mysql启动文件
vim /home/mysql/3306/mysql
#!/bin/sh
mysql_port=3306
mysql_username="admin"
mysql_password="12345678"
function_start_mysql()
{
printf "Starting MySQL...\n"
/bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/home/mysql/${mysql_port}/my.cnf 2>&1 > /dev/null &
}
function_stop_mysql()
{
printf "Stoping MySQL...\n"
/usr/local/mysql/bin/mysqladmin -u ${mysql_username} -p${mysql_password} -S /tmp/mysql.sock shutdown
}
function_restart_mysql()
{
printf "Restarting MySQL...\n"
function_stop_mysql
sleep 5
function_start_mysql
}
function_kill_mysql()
{
kill -9 $(ps -ef | grep 'bin/mysqld_safe' | grep ${mysql_port} | awk '{printf $2}')
kill -9 $(ps -ef | grep 'libexec/mysqld' | grep ${mysql_port} | awk '{printf $2}')
}
if [ "$1" = "start" ]; then
function_start_mysql
elif [ "$1" = "stop" ]; then
function_stop_mysql
elif [ "$1" = "restart" ]; then
function_restart_mysql
elif [ "$1" = "kill" ]; then
function_kill_mysql
else
printf "Usage: /home/mysql/${mysql_port}/mysql {start|stop|restart|kill}\n"
fi
chmod +x /home/mysql/3306/mysql
14、启动mysql
/home/mysql/3306/mysql start
15、通过命令行登录MySql服务器(提示输入密码时直接回车)
/usr/local/mysql/bin/mysql -u root -p -S /tmp/mysql.sock
16、输入以下SQL语句，创建一个具有root权限的用户(admin)与密码(123456)
GRANT ALL PRIVILEGES ON *.* TO 'admin'@'localhost' IDENTIFIED BY '12345678'; GRANT ALL PRIVILEGES ON *.* TO 'admin'@'127.0.0.1' IDENTIFIED BY '12345678';