Linux Mysql知识学习篇

1.查看Linux 是否安装了Mysql[root@localhost zhoulinghong]# rpm -qa |grep MySQL MySQL-server-community-5.1.22-0.rhel4已经安装了。2.Linux 下安装mysql（rpm）[root@localhost zhoulinghong]# rpm -ivh MySQL-server-community-5.1.22-0.rhel4.i386.rpm warning: MySQL-server-community-5.1.22-0.rhel4.i386.rpm: V3 DSA signature: NOKEY, key ID 5072e1f5error: Failed dependencies: perl（DBI） is needed by MySQL-server-community-5.1.22-0.rhel4.i386 Suggested resolutions: perl-DBI-1.40-5.i386.rpm呵呵，出错了。Linux的弊端就出现了。安装软件的时候相互依赖太强了。。。看到上面错误信息是缺少perl-DBI-1.40-5.i386.rpm包。没有办法只能安装了3.安装依赖包perl-DBI-1.40-5.i386.rpm 这个包在RedHat的CD2中。不用多想挂载光驱吧。[root@localhost mnt]# mount /dev/cdrom /mnt/cdrom挂载成功以后。转到 /mnt/cdrom/RedHat/RPMS目录下面就有perl-DBI-1.40-5.i386.rpm 这个包了。[root@localhost RPMS]# rpm -ivh perl-DBI-1.40-5.i386.rpm warning: perl-DBI-1.40-5.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60ePreparing... ########################################### [100%] 1:perl-DBI ########################################### [100%]安装成功。OK，到现在的依赖包也安装完了，就可以安装mysql了。（注意：因为大家的环境不一样，中间可能有其他的依赖包需要安装，方法照上面就好了。）4.安装Mysql[root@localhost zhoulinghong]# rpm -ihv MySQL-server-community-5.1.22-0.rhel4.i386.rpm warning: MySQL-server-community-5.1.22-0.rhel4.i386.rpm: V3 DSA signature: NOKEY, key ID 5072e1f5Preparing... ########################################### [100%] 1:MySQL-server-community ########################################### [100%]PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER ！To do so, start the server, then issue the following commands:/usr/bin/mysqladmin -u root password "new-password"/usr/bin/mysqladmin -u root -h localhost.localdomain password "new-password"See the manual for more instructions.Please report any problems with the /usr/bin/mysqlbug script！The latest information about MySQL is available on the web athttp://www.mysql.comSupport MySQL by buying support/licenses at http://shop.mysql.comNotes regarding SELinux on this platform:=========================================The default policy might cause server startup to fail because it is not allowed to access critical files. In this case, please update your installation.The default policy might also cause inavailability of SSL related features because the server is not allowed to access /dev/random and /dev/urandom. If this is a problem, please do the following:1） install selinux-policy-targeted-sources from your OS vendor 2） add the following two lines to /etc/selinux/targeted/src/policy/domains/program/mysqld.te: allow mysqld_t random_device_t:chr_file read; allow mysqld_t urandom_device_t:chr_file read; 3） cd to /etc/selinux/targeted/src/policy and issue the following command: make loadStarting MySQL[ OK ]Giving mysqld 2 seconds to start很明显，安装成功了。如果安装失败了就卸载一次在安装一下就基本没有什么问题了。

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