1.检测系统是否已经安装过MysqL或其依赖,若已装过要先将其删除,否则第4步使用yum安装时会报错:
1 # yum list installed | grep MysqL 2 MysqL-libs.i686 5.1.71-1.el6 @anaconda-CentOS-201311271240.i386/6.5 3 # yum -y remove MysqL-libs.i686
2.从MysqL的官网下载MysqL57-community-release-el6-5.noarch.rpm(注意这里的el6-5即适配RHEL6.5的版本,如果下载了其它版本后面的安装过程中可能会报错):
3.安装第一步下载的rpm文件:
yum install MysqL-community-release-el6- 安装成功后,我们可以看到/etc/yum.repos.d/目录下增加了以下两个文件查看MysqL57的安装源是否可用,如不可用请自行修改配置文件(/etc/yum.repos.d/MysqL-community.repo)使MysqL57下面的enable=1
若有MysqL其它版本的安装源可用,也请自行修改配置文件使其enable=0
yum repolist enabled | 2 MysqL-connectors-community MysqL Connectors Community 13 3 MysqL-tools-community MysqL Tools Community 18 4 MysqL57-community-dmr MysqL 5.7 Community Server Development Milesto 654.使用yum安装MysqL:
install MysqL-community-server5.启动MysqL服务:
service MysqLd start查看root密码:
grep "password" /var/log/MysqLd.log 2 2016-08-10T15:03:02.210317Z 1 [Note] A temporary password is generated for root@localhost: AYB(&-3Cz-rW现在必须立刻修改密码,不然会报错:
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
修改密码(如果在此步报错ERROR 1819,请向下翻查看原因及解决方法):
MysqL> SET PASSWORD FOR 'root'@localhost' = PASSWORD(newpass');6.查看MysqLd是否开机自启动,并设置为开机自启动:
7.修改字符集为UTF-8:
vim /etc/my.cnfcharacter-set-server=utf8在文件末尾新增[client]段,并在[client]段添加:
default-character-set=utf8service MysqLd restart查看修改结果:
MysqL> show variables like "%character%"; +--------------------------+----------------------------+ | Variable_name | Value | | character_set_client | utf8 | character_set_connection | character_set_database | character_set_filesystem | binary | character_set_results | character_set_server | character_set_system | character_sets_dir | /usr/share/MysqL/charsets/ 8 rows in set (0.00 sec)注:在修改密码步骤,若设置的密码为简单密码,可能会出现如下错误:
1819 (HY000): Your password does not satisfy the current policy requirements这一错误其实与validate_password_policy值的设置有关:
validate_password_policy值默认为1,即MEDIUM,所以刚开始设置的密码必须符合长度要求,且必须含有数字,小写或大写字母,特殊字符
如果我们只是做为测试用而不需要如此复杂的密码,可使用如下方式修改validate_password_policy值
set global validate_password_policy=0; Query OK,0 rows affected (0.00 sec)这样,对密码要求就只有长度了,而密码的最小长度由validate_password_length值决定
validate_password_length参数默认为8,它有最小值的限制,最小值为:
validate_password_number_count+ validate_password_special_char_count+ (2 * validate_password_mixed_case_count)其中,validate_password_number_count指定了密码中数字的长度,validate_password_special_char_count指定了密码中特殊字符的长度,validate_password_mixed_case_count指定了密码中大小字母的长度。这些参数的默认值均为1,所以validate_password_length最小值为4,如果显性指定validate_password_length的值小于4,尽管不会报错,但validate_password_length的值将设为4
设置validate_password_length的值: