Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> show databases;
+--------------------+
| Database? ? ? ? ? |
+--------------------+
| information_schema |
| mysql? ? ? ? ? ? ? |
| performance_schema |
| test? ? ? ? ? ? ? |
+--------------------+
4 rows in set (0.00 sec)
如果要远程访问root用户，如下命令！
mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'guoyJoe123' WITH GRANT OPTION;
my.cnf参考：
MySQL系统参数配置
先不启动MySQL，拷贝数据目录到新的位置/mysqldata/mysql_data/，并修改权限
cd /var/lib/mysql/
cp -r * /mysqldata/mysql_data/
[root@wmserpmysql1 /]# chown mysql:mysql -R /mysqldata
?
删除原来默认的参数文件
[root@wmserpmysql1 mysql]# rm /usr/my.cnf
rm: remove regular file `/usr/my.cnf'? y
?
重新拷贝新的参数文件，然后修改
[root@wmserpmysql1 mysql]# pwd
/usr/share/mysql
[root@wmserpmysql1 mysql]# cp my-default.cnf /etc/my.cnf
?
修改参数文件/etc/my.cnf
[client]
port = 3306
socket = /tmp/mysql.sock
?
[mysql]
no-auto-rehash
?
[mysqld]
port = 3306
socket = /tmp/mysql.sock
datadir=/mysqldata/mysql_data
skip-name-resolve
character-set-server=utf8
lower_case_table_names=1
expire-logs-days=60
back_log = 500
max_connections = 5000
max_connect_errors =100000
table_open_cache = 2048
max_allowed_packet = 16M
binlog_cache_size = 1M
max_heap_table_size = 64M
sort_buffer_size = 8M
join_buffer_size = 8M
thread_cache_size = 8
thread_concurrency =16
query_cache_size = 64M
query_cache_limit = 2M
ft_min_word_len = 4
thread_stack = 192K
tmp_table_size = 64M
log-bin=mysql-bin
binlog_format=mixed
?
?
slow_query_log_file=/mysqldata/mysql_data/localhost-slow.log
slow_query_log
long_query_time=1
?
relay-log=/mysqldata/mysql_data/relay-bin
?
server-id = 1
?
key_buffer_size = 32M
?
myisam_repair_threads = 1
myisam_recover
?
transaction_isolation = REPEATABLE-READ
?
innodb_additional_mem_pool_size = 16M
innodb_buffer_pool_size = 10G
innodb_data_file_path = ibdata1:10M:autoextend
innodb_file_per_table=1
innodb_file_io_threads = 4
innodb_thread_concurrency = 16
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 8M
innodb_log_file_size = 256M
innodb_log_files_in_group = 6
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
innodb_flush_method=O_DIRECT
?
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
?
[mysqldump]
quick
max_allowed_packet = 16M
?
[myisamchk]
key_buffer_size = 512M
sort_buffer_size = 512M
read_buffer = 8M
write_buffer = 8M
?
[mysqlhotcopy]
interactive-timeout
?
[mysqld_safe]
open-files-limit = 65535
log-error=/mysqldata/mysql_data/wmserpmysql1.800best.com.err
pid-file=/mysqldata/mysql_data/wmserpmysql1.800best.com.pid
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