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-5.6.34-linux-glibc2.5-x86_64.tar.gz
ln -s mysql-5.6.34-linux-glibc2.5-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/3306/data/    
mkdir -p /data/data0/mysql/3306/binlog/  
mkdir -p /data/data0/mysql/3306/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/3306/data --user=mysql

第六步：创建配置文件

touch /data/data0/mysql/3306/my.cnf   // 创建空文件
vi /data/data0/mysql/3306/my.cnf

[client]
character-set-server = utf8
port    = 3306
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    = 3306
socket  = /tmp/mysql.sock
basedir = /usr/local/mysql
datadir = /data/data0/mysql/3306/data
log-error = /data/data0/mysql/3306/mysql_error.log
pid-file = /data/data0/mysql/3306/mysql.pid
open_files_limit    = 10240
back_log = 600
max_connections = 5000
max_connect_errors = 99999
#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 = innodb
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 = /data/data0/mysql/3306/binlog/binlog
binlog_cache_size = 4m
binlog_format = mixed
max_binlog_cache_size = 8m
max_binlog_size = 1g
relay-log-index = /data/data0/mysql/3306/relaylog/relaylog
relay-log-info-file = /data/data0/mysql/3306/relaylog/relaylog
relay-log = /data/data0/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
sql_mode = no_engine_substitution,strict_trans_tables
interactive_timeout = 288000
wait_timeout = 288000

skip-name-resolve
#master-connect-retry = 10
slave-skip-errors = 1032,1062,126,1114,1146,1048,1396

#master-host     =   192.168.1.2
#master-user     =   username
#master-password =   password
#master-port     =  3306

server-id = 1

#innodb_additional_mem_pool_size = 16m
#innodb_buffer_pool_size = 512m
#innodb_data_file_path = ibdata1:512m: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 = 0

#log-slow-queries = /data/data0/mysql/3306/slow.log
#long_query_time = 2

[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/3306/my.cnf &

测试是否安装成功。

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