mysql在linux上的安裝之一yum安裝
mysql的安裝無非以下幾種，其中yum安裝也是rpm安裝中的一種，只不過這種不需要再單獨下載安裝包，直接根據操作系統自帶的mysql包進行安裝，比較簡單，本篇主要對yum進行講解，後續會對其它幾種方式進行總結。
目前的安裝方式
1，rpm 安裝
2，二進制安裝
3，源碼安裝
4，yum安裝
yum方式安裝
1. 安裝操作系統
1.1安裝Red Hat Enterprise Linux 6.2 (64-bit)
arch: x86_64
1.2. 關閉selinux vi /etc/selinux/config
1.3. service iptables stop 臨時關閉防火牆
2 安裝數據庫MySQL
2.1掛載Redhat鏡像文件 ftp://192.168.0.212/pub/iso/rhel6.2/，命令如下
#mkdir -p /mnt/iso
#mkdir -p /mnt/redhat5.5
# mount 192.168.0.212:/var/ftp/pub/iso/rhel5.5/ /mnt/iso/
# mount -t iso9660 -o loop rhel-server-5.5-x86_64-dvd.iso /mnt/redhat5.5/
2.2 配置yum
# cd /etc/yum.repos.d/
# cp rhel-debuginfo.repo rhel-debuginfo.repo_bak
# vi rhel-debuginfo.repo
[rhel-debuginfo]
name=Red Hat Enterprise Linux $releasever - $basearch - Debug
baseurl=file:///mnt/redhat5.5/Server
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[oracle@Redhat5 yum.repos.d]$ ls
el5u5.repo el5u8.repo rhel-debuginfo.repo
[oracle@Redhat5 yum.repos.d]$ cat el5u8.repo
[Server]
name=Red Hat Enterprise Linux 5 update 8
baseurl=ftp://192.168.0.212/pub/src/RHEL5U8/x64/Server
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[VT]
name=Red Hat Enterprise Linux 5 update 8
baseurl=ftp://192.168.0.212/pub/src/RHEL5U8/x64/VT
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[Cluster]
name=Red Hat Enterprise Linux 5 update 8
baseurl=ftp://192.168.0.212/pub/src/RHEL5U8/x64/Cluster
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[ClusterStorage]
name=Red Hat Enterprise Linux 5 update 8
baseurl=ftp://192.168.0.212/pub/src/RHEL5U8/x64/ClusterStorage
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
2.3根據需求創建mysql數據存儲目錄
# mkdir /mysqldata
2.4 yum安裝mysql，mysql-server
# yum install mysql mysql-server
2.5 修改mysql配置文件
# vi /etc/my.cnf
[mysqld]
datadir=/data/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1
default-character-set=utf8
# Disabling symbolic-links is recommended to prevent assorted security risks;
# to do so, uncomment this line:
# symbolic-links=0
lower_case_table_names=1
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
[mysql]
default-character-set=utf8
2.6啟動mysql，同時添加mysql自動啟動
# /etc/rc.d/init.d/mysqld start
# chkconfig mysqld on
# chkconfig --list mysqld
2.7 修改mysql密碼
# mysql -u root
/usr/bin/mysqladmin -u root password 123456
mysql> grant all on mysql.* to 'root'@'localhost' identified by 'mysql8895'
mysql> source /opt/MYSQL.sql 導入數據
mysql> exit
建立用戶：
mysql> grant all on dcs.* to "ligang"@"%" identified by "dcsA99ligang";
