CentOS6.5安裝MySQL5.7詳細教程(本人6.3也行)
本文參考http://www.cnblogs.com/lzj0218/p/5724446.html
主要參考博文:
https://segmentfault.com/a/1190000003049498
http://www.th7.cn/db/mysql/201601/175073.shtml
1.檢測系統是否已經安裝過mysql或其依賴,若已裝過要先將其刪除,否則第4步使用yum安裝時會報錯:
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.從mysql的官網下載mysql57-community-release-el6-5.noarch.rpm(註意這裏的el6-5即適配RHEL6.5的版本,如果下載了其它版本後面的安裝過程中可能會報錯):
wget dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm (本文備份https://files.cnblogs.com/files/weiyiyong/mysql-community-release-el6-5.noarch.rar)
3.安裝第一步下載的rpm文件:
yum install mysql-community-release-el6-5.noarch.rpm
安裝成功後,我們可以看到/etc/yum.repos.d/目錄下增加了以下兩個文件
1 # ls /etc/yum.repos.d 2 mysql-community-source.repo 3 mysql-community.repo
查看mysql57的安裝源是否可用,如不可用請自行修改配置文件(/etc/yum.repos.d/mysql-community.repo)使mysql57下面的enable=1
若有mysql其它版本的安裝源可用,也請自行修改配置文件使其enable=0
1 # yum repolist enabled | grep mysql 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 65
4.使用yum安裝mysql:
yum install mysql-community-server
5.啟動mysql服務:
service mysqld start
查看root密碼:
1 # grep "password" /var/log/mysqld.log 2 2016-08-10T15:03:02.210317Z 1 [Note] A temporary password is generated for [email protected]: AYB(&-3Cz-rW
現在必須立刻修改密碼,不然會報錯:(http://www.cnblogs.com/weiyiyong/p/7636333.html)
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
修改密碼(如果在此步報錯ERROR 1819,請向下翻查看原因及解決方法):
mysql> SET PASSWORD FOR ‘root‘@‘localhost‘ = PASSWORD(‘newpass‘);
6.查看mysqld是否開機自啟動,並設置為開機自啟動:
1 chkconfig --list | grep mysqld 2 chkconfig mysqld on
7.修改字符集為UTF-8:
vim /etc/my.cnf
在[mysqld]部分添加:
character-set-server=utf8
在文件末尾新增[client]段,並在[client]段添加:
default-character-set=utf8
修改好之後重啟mysqld服務:
service mysqld restart
查看修改結果:
mysql> show variables like "%character%";(出現需要密碼時重新重置密碼,坑逼 使用SET PASSWORD = PASSWORD(‘yong123456‘);) +--------------------------+----------------------------+ | Variable_name | Value | +--------------------------+----------------------------+ | character_set_client | utf8 | | character_set_connection | utf8 | | character_set_database | utf8 | | character_set_filesystem | binary | | character_set_results | utf8 | | character_set_server | utf8 | | character_set_system | utf8 | | character_sets_dir | /usr/share/mysql/charsets/ | +--------------------------+----------------------------+ 8 rows in set (0.00 sec)
註:在修改密碼步驟,若設置的密碼為簡單密碼,可能會出現如下錯誤:
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
這一錯誤其實與validate_password_policy值的設置有關:
validate_password_policy值默認為1,即MEDIUM,所以剛開始設置的密碼必須符合長度要求,且必須含有數字,小寫或大寫字母,特殊字符
如果我們只是做為測試用而不需要如此復雜的密碼,可使用如下方式修改validate_password_policy值
mysql> set global validate_password_policy=0; Query OK, 0 rows affected (0.00 sec)
這樣,對密碼要求就只有長度了,而密碼的最小長度由validate_password_length值決定
validate_password_length參數默認為8,它有最小值的限制,最小值為:
validate_password_number_count+ validate_password_special_char_count+ (2 * validate_password_mixed_case_count)
其中,validate_password_number_count指定了密碼中數字的長度,validate_password_special_char_count指定了密碼中特殊字符的長度,validate_password_mixed_case_count指定了密碼中大小字母的長度。這些參數的默認值均為1,所以validate_password_length最小值為4,如果顯性指定validate_password_length的值小於4,盡管不會報錯,但validate_password_length的值將設為4
設置validate_password_length的值:
mysql> set global validate_password_length=4; Query OK, 0 rows affected (0.00 sec)
如果修改了validate_password_number_count,validate_password_special_char_count,validate_password_mixed_case_count中任何一個值,則validate_password_length將進行動態修改。
CentOS6.5安裝MySQL5.7詳細教程(本人6.3也行)