1、確認mysql是否已安裝，有下面的代碼可知
[root@cdh1 zjl]# yum list installed mysql*Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile * base: mirrors.zju.edu.cn * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com Installed Packages MySQL-python.x86_64 1.2.3-0.3.c1.1.el6 @base mysql-libs.x86_64 5.1.73-8.el6_8 @anaconda-centos-201703281317.x86_64/6.9
2、卸載已安裝的mysql，建議使用yum命令，因為yum命令可以自動刪除與mysql相關的依賴；如果使用rpm命令，則還需要手動去刪除和mysql相關的文件，比較麻煩
[root@cdh1 zjl]# yum remove MySQL-python.x86_64 mysql-libs.x86_64 Loaded plugins: fastestmirror, refresh-packagekit, security Setting up Remove Process Resolving Dependencies--> Running transaction check---> Package MySQL-python.x86_64 0:1.2.3-0.3.c1.1.el6 will be erased--> Processing Dependency: MySQL-python for package: cloudera-manager-agent-5.11.1-1.cm5111.p0.9.el6.x86_64---> Package mysql-libs.x86_64 0:5.1.73-8.el6_8 will be erased--> Processing Dependency: libmysqlclient.so.16()(64bit) for package: 2:postfix-2.6.6-8.el6.x86_64--> Processing Dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: 2:postfix-2.6.6-8.el6.x86_64--> Processing Dependency: mysql-libs for package: 2:postfix-2.6.6-8.el6.x86_64--> Running transaction check---> Package cloudera-manager-agent.x86_64 0:5.11.1-1.cm5111.p0.9.el6 will be erased---> Package postfix.x86_64 2:2.6.6-8.el6 will be erased--> Processing Dependency: /usr/sbin/sendmail for package: redhat-lsb-core-4.0-7.el6.centos.x86_64--> Processing Dependency: /usr/sbin/sendmail for package: cronie-1.4.4-16.el6_8.2.x86_64--> Running transaction check---> Package cronie.x86_64 0:1.4.4-16.el6_8.2 will be erased--> Processing Dependency: cronie = 1.4.4-16.el6_8.2 for package: cronie-anacron-1.4.4-16.el6_8.2.x86_64---> Package redhat-lsb-core.x86_64 0:4.0-7.el6.centos will be erased--> Processing Dependency: redhat-lsb-core(x86-64) = 4.0 for package: redhat-lsb-printing-4.0-7.el6.centos.x86_64--> Processing Dependency: redhat-lsb-core(x86-64) = 4.0-7.el6.centos for package: redhat-lsb-4.0-7.el6.centos.x86_64--> Processing Dependency: redhat-lsb-core(x86-64) = 4.0 for package: redhat-lsb-graphics-4.0-7.el6.centos.x86_64--> Running transaction check---> Package cronie-anacron.x86_64 0:1.4.4-16.el6_8.2 will be erased---> Package redhat-lsb.x86_64 0:4.0-7.el6.centos will be erased--> Processing Dependency: redhat-lsb(x86-64) = 4.0-7.el6.centos for package: redhat-lsb-compat-4.0-7.el6.centos.x86_64---> Package redhat-lsb-graphics.x86_64 0:4.0-7.el6.centos will be erased---> Package redhat-lsb-printing.x86_64 0:4.0-7.el6.centos will be erased--> Running transaction check---> Package redhat-lsb-compat.x86_64 0:4.0-7.el6.centos will be erased--> Processing Dependency: /etc/cron.d for package: crontabs-1.10-33.el6.noarch--> Processing Dependency: /etc/cron.d for package: sysstat-9.0.4-33.el6.x86_64--> Restarting Dependency Resolution with new changes.--> Running transaction check---> Package crontabs.noarch 0:1.10-33.el6 will be erased---> Package sysstat.x86_64 0:9.0.4-33.el6 will be erased--> Finished Dependency Resolution Dependencies Resolved==================================================================== Package Arch Version Repository Size====================================================================Removing: MySQL-python x86_64 1.2.3-0.3.c1.1.el6 @base 246 k mysql-libs x86_64 5.1.73-8.el6_8 @anaconda-CentOS-201703281317.x86_64/6.9 4.0 M Removing for dependencies: cloudera-manager-agent x86_64 5.11.1-1.cm5111.p0.9.el6 @/cloudera-manager-agent-5.11.1-1.cm5111.p0.9.el6.x86_64 71 M cronie x86_64 1.4.4-16.el6_8.2 @anaconda-CentOS-201703281317.x86_64/6.9 174 k cronie-anacron x86_64 1.4.4-16.el6_8.2 @anaconda-CentOS-201703281317.x86_64/6.9 43 k crontabs noarch 1.10-33.el6 @anaconda-CentOS-201703281317.x86_64/6.9 2.4 k postfix x86_64 2:2.6.6-8.el6 @anaconda-CentOS-201703281317.x86_64/6.9 9.7 M redhat-lsb x86_64 4.0-7.el6.centos @anaconda-CentOS-201703281317.x86_64/6.9 0.0 redhat-lsb-compat x86_64 4.0-7.el6.centos @anaconda-CentOS-201703281317.x86_64/6.9 0.0 redhat-lsb-core x86_64 4.0-7.el6.centos @anaconda-CentOS-201703281317.x86_64/6.9 22 k redhat-lsb-graphics x86_64 4.0-7.el6.centos @anaconda-CentOS-201703281317.x86_64/6.9 0.0 redhat-lsb-printing x86_64 4.0-7.el6.centos @anaconda-CentOS-201703281317.x86_64/6.9 0.0 sysstat x86_64 9.0.4-33.el6 @anaconda-CentOS-201703281317.x86_64/6.9 826 k Transaction Summary====================================================================Remove 13 Package(s) Installed size: 86 M Is this ok [y/N]: y Downloading Packages: Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Warning: RPMDB altered outside of yum. Erasing : redhat-lsb-compat-4.0-7.el6.centos.x86_64 1/13 Erasing : redhat-lsb-4.0-7.el6.centos.x86_64 2/13 Erasing : cloudera-manager-agent-5.11.1-1.cm5111.p0.9. 3/13 warning: /etc/cloudera-scm-agent/config.ini saved as /etc/cloudera-scm-agent/config.ini.rpmsave Erasing : redhat-lsb-graphics-4.0-7.el6.centos.x86_64 4/13 Erasing : redhat-lsb-printing-4.0-7.el6.centos.x86_64 5/13 Erasing : redhat-lsb-core-4.0-7.el6.centos.x86_64 6/13 /var/tmp/rpm-tmp.jLbJUk: line 1: lsb_release: command not found Erasing : MySQL-python-1.2.3-0.3.c1.1.el6.x86_64 7/13 Erasing : sysstat-9.0.4-33.el6.x86_64 8/13 Erasing : crontabs-1.10-33.el6.noarch 9/13 Erasing : cronie-anacron-1.4.4-16.el6_8.2.x86_64 10/13 Erasing : cronie-1.4.4-16.el6_8.2.x86_64 11/13 Erasing : 2:postfix-2.6.6-8.el6.x86_64 12/13 Erasing : mysql-libs-5.1.73-8.el6_8.x86_64 13/13 Verifying : redhat-lsb-printing-4.0-7.el6.centos.x86_64 1/13 Verifying : cronie-anacron-1.4.4-16.el6_8.2.x86_64 2/13 Verifying : cronie-1.4.4-16.el6_8.2.x86_64 3/13 Verifying : 2:postfix-2.6.6-8.el6.x86_64 4/13 Verifying : redhat-lsb-4.0-7.el6.centos.x86_64 5/13 Verifying : redhat-lsb-core-4.0-7.el6.centos.x86_64 6/13 Verifying : cloudera-manager-agent-5.11.1-1.cm5111.p0.9. 7/13 Verifying : crontabs-1.10-33.el6.noarch 8/13 Verifying : redhat-lsb-compat-4.0-7.el6.centos.x86_64 9/13 Verifying : MySQL-python-1.2.3-0.3.c1.1.el6.x86_64 10/13 Verifying : redhat-lsb-graphics-4.0-7.el6.centos.x86_64 11/13 Verifying : sysstat-9.0.4-33.el6.x86_64 12/13 Verifying : mysql-libs-5.1.73-8.el6_8.x86_64 13/13 Removed: MySQL-python.x86_64 0:1.2.3-0.3.c1.1.el6 mysql-libs.x86_64 0:5.1.73-8.el6_8 Dependency Removed: cloudera-manager-agent.x86_64 0:5.11.1-1.cm5111.p0.9.el6 cronie.x86_64 0:1.4.4-16.el6_8.2 cronie-anacron.x86_64 0:1.4.4-16.el6_8.2 crontabs.noarch 0:1.10-33.el6 postfix.x86_64 2:2.6.6-8.el6 redhat-lsb.x86_64 0:4.0-7.el6.centos redhat-lsb-compat.x86_64 0:4.0-7.el6.centos redhat-lsb-core.x86_64 0:4.0-7.el6.centos redhat-lsb-graphics.x86_64 0:4.0-7.el6.centos redhat-lsb-printing.x86_64 0:4.0-7.el6.centos sysstat.x86_64 0:9.0.4-33.el6 Complete!
3、用whereis命令查找mysql相關的文件，因為步驟2用yum來卸載，所以mysql被清理得很干凈；如果使用rpm將會很麻煩，有很多的文件需要手動清除
[root@cdh1 zjl]# whereis mysql mysql:
4、查看系統中的mysql安裝包
[root@cdh1 zjl]# yum list mysql*Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile * base: mirrors.zju.edu.cn * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com Available Packages MySQL-python.x86_64 1.2.3-0.3.c1.1.el6 base mysql.x86_64 5.1.73-8.el6_8 base mysql-bench.x86_64 5.1.73-8.el6_8 base mysql-connector-java.noarch 1:5.1.17-6.el6 base mysql-connector-odbc.x86_64 5.1.5r1144-7.el6 base mysql-devel.i686 5.1.73-8.el6_8 base mysql-devel.x86_64 5.1.73-8.el6_8 base mysql-embedded.i686 5.1.73-8.el6_8 base mysql-embedded.x86_64 5.1.73-8.el6_8 base mysql-embedded-devel.i686 5.1.73-8.el6_8 base mysql-embedded-devel.x86_64 5.1.73-8.el6_8 base mysql-libs.i686 5.1.73-8.el6_8 base mysql-libs.x86_64 5.1.73-8.el6_8 base mysql-server.x86_64 5.1.73-8.el6_8 base mysql-test.x86_64 5.1.73-8.el6_8 base
5、選擇mysql-server來安裝
[root@cdh1 zjl]# mysql--***-->---> Package mysql-server.x86_64 :.---> Processing Dependency: mysql = .-.el6_8 package: mysql-server-.---> Processing Dependency: -DBI package: mysql-server-.---> Processing Dependency: -DBD-MySQL package: mysql-server-.---> Processing Dependency: (DBI) package: mysql-server-.---> Processing Dependency: libmysqlclient_r.so.(libmysqlclient_16)(64bit) package: mysql-server-.---> Processing Dependency: libmysqlclient.so.(libmysqlclient_16)(64bit) package: mysql-server-.---> Processing Dependency: libmysqlclient_r.so.()(64bit) package: mysql-server-.---> Processing Dependency: libmysqlclient.so.()(64bit) package: mysql-server-.--->---> Package mysql.x86_64 :.----> Package mysql-libs.x86_64 :.----> Package -DBD-MySQL.x86_64 :----> Package -DBI.x86_64 :--->==================================================================================================================================================================================================================================================================================================================================================================================================================================-server x86_64 .-.el6_8 base .-.el6_8 base -libs x86_64 .-.el6_8 base -DBD-MySQL x86_64 -.el6 base -DBI x86_64 -.el6 base =================================================================================================================================================================================================================/
6、選擇y繼續安裝
Is this ok [y/N]: y Downloading Packages: (1/5): mysql-5.1.73-8.el6_8.x86_64.rpm | 895 kB 00:00 (2/5): mysql-libs-5.1.73-8.el6_8.x86_64.rpm | 1.2 MB 00:00 (3/5): mysql-server-5.1.73-8.el6_8.x86_64.rpm | 8.6 MB 00:02 (4/5): perl-DBD-MySQL-4.013-3.el6.x86_64.rpm | 134 kB 00:00 (5/5): perl-DBI-1.609-4.el6.x86_64.rpm | 705 kB 00:00 -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Total 2.2 MB/s | 12 MB 00:05 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : mysql-libs-5.1.73-8.el6_8.x86_64 1/5 Installing : perl-DBI-1.609-4.el6.x86_64 2/5 Installing : perl-DBD-MySQL-4.013-3.el6.x86_64 3/5 Installing : mysql-5.1.73-8.el6_8.x86_64 4/5 Installing : mysql-server-5.1.73-8.el6_8.x86_64 5/5 Verifying : perl-DBD-MySQL-4.013-3.el6.x86_64 1/5 Verifying : mysql-libs-5.1.73-8.el6_8.x86_64 2/5 Verifying : mysql-server-5.1.73-8.el6_8.x86_64 3/5 Verifying : mysql-5.1.73-8.el6_8.x86_64 4/5 Verifying : perl-DBI-1.609-4.el6.x86_64 5/5 Installed: mysql-server.x86_64 0:5.1.73-8.el6_8 Dependency Installed: mysql.x86_64 0:5.1.73-8.el6_8 mysql-libs.x86_64 0:5.1.73-8.el6_8 perl-DBD-MySQL.x86_64 0:4.013-3.el6 perl-DBI.x86_64 0:1.609-4.el6 Complete!
7、啟動mysql服務
[root@cdh1 zjl]# service mysqld start Initializing MySQL database: Installing MySQL system tables... OK Filling help tables... OK To start mysqld at boot time you have to copy support-files/mysql.server to the right place for your system 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 cdh1.zjl.com password 'new-password'Alternatively you can run:/usr/bin/mysql_secure_installationwhich will also give you the option of removing the test databases and anonymous user created by default. This is strongly recommended for production servers. See the manual for more instructions. You can start the MySQL daemon with: cd /usr ; /usr/bin/mysqld_safe &You can test the MySQL daemon with mysql-test-run.pl cd /usr/mysql-test ; perl mysql-test-run.pl Please report any problems with the /usr/bin/mysqlbug script! [ OK ] Starting mysqld: [ OK ]
8、連接一下試一下，直接mysql然后q關閉連接
[root@cdh1 zjl]# mysql Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 2Server version: 5.1.73 Source distribution Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql> q Bye
9、設置mysql開機啟動
[root@cdh1 zjl]# chkconfig mysqld on
10、開啟3306端口，并保存
[root@cdh1 zjl]# /sbin/iptables -I INPUT -p tcp --dport 3306 -j ACCEPT [root@cdh1 zjl]# /etc/rc.d/init.d/iptables save
11、連接mysql設置密碼
[root@cdh1 zjl]# mysql Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 3Server version: 5.1.73 Source distribution Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql> use mysql; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> update user set password=password('123') where user='root'; Query OK, 3 rows affected (0.02 sec) Rows matched: 3 Changed: 3 Warnings: 0mysql> flush privileges; Query OK, 0 rows affected (0.02 sec) mysql> q Bye
12、重啟mysql服務
[root@cdh1 zjl]# service mysqld restart Stopping mysqld: [ OK ] Starting mysqld: [ OK ]
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