CentOS下MySQL的安装

MySQL数据库是一款比较常用的数据库，大家在练习安装时，可能会遇到各种各样的问题，请大家参考在CentOS系统下MySQL数据库的安装方式。如有任何问题，欢迎留言，本人随时解答。

MySQL安装步骤如下：

第一步：上传 MySQL二进制安装包

MySQL版本：5.6.3

下载链接：https://pan.baidu.com/s/1uvqAjDP6PRNWHlNt5tyvKQ

第二步：添加用户组，创建用户

groupadd mysql    // 添加一个用户组，名字叫做 mysql
useradd  -g mysql mysql // 并创建一个用户 mysql

第三步：解压缩，创建软链接

cd /usr/local/
tar zxvf  mysql-5.6.-linux-glibc2.-x86_64.tar.gz
ln -s mysql-5.6.-linux-glibc2.-x86_64  mysql

第四步：创建数据目录，并修改所有者所属组

mkdir -p /data/data0/mysql//data/
mkdir -p /data/data0/mysql//binlog/
mkdir -p /data/data0/mysql//relaylog/ 
 
chown -R mysql:mysql /data/data0/mysql/ 

第五步：初始化数据（自动创建几个库，添加记录 test mysql）

/usr/local/mysql/scripts/mysql_install_db --basedir=/usr/local/mysql --datadir=/data/data0/mysql//data --user=mysql

第六步：创建配置文件

touch /data/data0/mysql//my.cnf   // 创建空文件
vi /data/data0/mysql//my.cnf

[client]
character-set-server = utf8
port    =
socket  = /tmp/mysql.sock
 
[mysqld]
character-set-server = utf8
replicate-ignore-db = mysql
replicate-ignore-db = test
replicate-ignore-db = information_schema
user    = mysql
port    =
socket  = /tmp/mysql.sock
basedir = /usr/local/mysql
datadir = /data/data0/mysql//data
log-error = /data/data0/mysql//mysql_error.log
pid-file = /data/data0/mysql//mysql.pid
open_files_limit    =
back_log =
max_connections =
max_connect_errors =
#table_cache =
external-locking = FALSE
max_allowed_packet = 32M
sort_buffer_size = 1M
join_buffer_size = 1M
thread_cache_size =
#thread_concurrency =
query_cache_size = 512M
query_cache_limit = 2M
query_cache_min_res_unit = 2k
default-storage-engine = Innodb
thread_stack = 192K
transaction_isolation = READ-COMMITTED
tmp_table_size = 246M
max_heap_table_size = 246M
#long_query_time =
log-slave-updates
log-bin = /data/data0/mysql//binlog/binlog
binlog_cache_size = 4M
binlog_format = MIXED
max_binlog_cache_size = 8M
max_binlog_size = 1G
relay-log-index = /data/data0/mysql//relaylog/relaylog
relay-log-info-file = /data/data0/mysql//relaylog/relaylog
relay-log = /data/data0/mysql//relaylog/relaylog
expire_logs_days =
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 =
myisam_recover
sql_mode = NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
interactive_timeout =
wait_timeout = 
 
skip-name-resolve
#master-connect-retry =
slave-skip-errors = ,,,,,,
 
#master-host     =   192.168.1.2
#master-user     =   username
#master-password =   password
#master-port     =  
 
server-id = 
 
#innodb_additional_mem_pool_size = 16M
#innodb_buffer_pool_size = 512M
#innodb_data_file_path = ibdata1:512M:autoextend
#innodb_file_io_threads =
#innodb_thread_concurrency =
#innodb_flush_log_at_trx_commit =
#innodb_log_buffer_size = 16M
#innodb_log_file_size = 128M
#innodb_log_files_in_group =
#innodb_max_dirty_pages_pct =
#innodb_lock_wait_timeout =
#innodb_file_per_table = 
 
#log-slow-queries = /data/data0/mysql//slow.log
#long_query_time = 
 
[mysqldump]
quick
max_allowed_packet = 32M
 
[mysql]
no-auto-rehash
prompt = (\u@\h)[\d]>\_
default-character-set=utf8

配置文件

安装完成，启动MySQL。

/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/data0/mysql//my.cnf &

测试是否安装成功。

/usr/local/mysql/bin/mysql -uroot -p