CentOS下yum安装mysql
其实跟windows下安装过程差别不大，就是下载为了方便使用了yum的方式。安装前先确认下系统是否还安装mysql，卸载是否不完全，再去官网(http://dev.mysql.com/downloads/repo/yum/)选一个yum版本，这里我选了最新的mysql80-community-release-el7-3.noarch.rpm，通过wget下载后就可以安装mysql服务端了，然后就算完了。是不是很简单？当然为了使用方便，跟windows的一样，最好再改下初始密码。下面看下操作记录：
1、检查下是否已下载还有卸载残留
# rpm -qa | grep mysql
# find / -name mysql
/etc/selinux/targeted/active/modules//mysql
/usr/lib64/mysql
/usr/share/mysql
看来还是有的，通过rm -rf将以上目录删掉即可，另外顺便把配置文件/etc/my.cnf也删掉吧，用rm -f。
2、安装yum
# wget http://repo.mysql.com/mysql80-community-release-el7-3.noarch.rpm
---- ::-- http://repo.mysql.com/mysql80-community-release-el7-3.noarch.rpm
Resolving repo.mysql.com (repo.mysql.com)... 23.41.23.231
Connecting to repo.mysql.com (repo.mysql.com)|23.41.23.231|:... connected.
HTTP request sent, awaiting response... OK
Length: (25K) [application/x-redhat-package-manager]
Saving to: 鈥榤ysql80-community-release-el7-.noarch.rpm鈥 %[==============================================================================================================================>] , --.-K/s in .1s -- :: ( KB/s) - 鈥榤ysql80-community-release-el7-.noarch.rpm鈥saved [/]
3、安装mysql
# sudo rpm -Uvh mysql80-community-release-el7-.noarch.rpm
warning: mysql80-community-release-el7-.noarch.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ################################# [%]
Updating / installing...
:mysql80-community-release-el7- ################################# [%]
[root@VM_0_17_centos mysql]# yum install -y mysql-community-server
Loaded plugins: fastestmirror, langpacks
epel | 4.7 kB ::
extras | 3.4 kB ::
mysql-connectors-community | 2.5 kB ::
mysql-tools-community | 2.5 kB ::
mysql80-community | 2.5 kB ::
os | 3.6 kB ::
updates | 3.4 kB ::
(/): extras//x86_64/primary_db | kB ::
(/): epel//x86_64/updateinfo | kB ::
(/): epel//x86_64/primary_db | 6.7 MB ::
(/): mysql-connectors-community/x86_64/primary_db | kB ::
(/): mysql-tools-community/x86_64/primary_db | kB ::
(/): mysql80-community/x86_64/primary_db | kB ::
(/): updates//x86_64/primary_db | 4.2 MB ::
Determining fastest mirrors
Resolving Dependencies
--> Running transaction check
---> Package mysql-community-server.x86_64 :8.0.-.el7 will be installed
--> Processing Dependency: mysql-community-common(x86-) = 8.0.-.el7 for package: mysql-community-server-8.0.-.el7.x86_64
--> Processing Dependency: mysql-community-client(x86-) >= 8.0. for package: mysql-community-server-8.0.-.el7.x86_64
--> Processing Dependency: libnuma.so.(libnuma_1.)(64bit) for package: mysql-community-server-8.0.-.el7.x86_64
--> Processing Dependency: libnuma.so.(libnuma_1.)(64bit) for package: mysql-community-server-8.0.-.el7.x86_64
--> Processing Dependency: libnuma.so.()(64bit) for package: mysql-community-server-8.0.-.el7.x86_64
--> Running transaction check
---> Package mysql-community-client.x86_64 :8.0.-.el7 will be installed
--> Processing Dependency: mysql-community-libs(x86-) >= 8.0. for package: mysql-community-client-8.0.-.el7.x86_64
---> Package mysql-community-common.x86_64 :8.0.-.el7 will be installed
---> Package numactl-libs.x86_64 :2.0.-.el7 will be installed
--> Running transaction check
---> Package mariadb-libs.x86_64 :5.5.-.el7 will be obsoleted
--> Processing Dependency: libmysqlclient.so.()(64bit) for package: :postfix-2.10.-.el7.x86_64
--> Processing Dependency: libmysqlclient.so.(libmysqlclient_18)(64bit) for package: :postfix-2.10.-.el7.x86_64
---> Package mysql-community-libs.x86_64 :8.0.-.el7 will be obsoleting
--> Running transaction check
---> Package mysql-community-libs-compat.x86_64 :8.0.-.el7 will be obsoleting
---> Package postfix.x86_64 :2.10.-.el7 will be updated
---> Package postfix.x86_64 :2.10.-.el7 will be an update
--> Finished Dependency Resolution Dependencies Resolved ========================================================================================================================================================================
Package Arch Version Repository Size
========================================================================================================================================================================
Installing:
mysql-community-libs x86_64 8.0.-.el7 mysql80-community 3.0 M
replacing mariadb-libs.x86_64 :5.5.-.el7
mysql-community-libs-compat x86_64 8.0.-.el7 mysql80-community 2.1 M
replacing mariadb-libs.x86_64 :5.5.-.el7
mysql-community-server x86_64 8.0.-.el7 mysql80-community M
Installing for dependencies:
mysql-community-client x86_64 8.0.-.el7 mysql80-community M
mysql-community-common x86_64 8.0.-.el7 mysql80-community k
numactl-libs x86_64 2.0.-.el7 os k
Updating for dependencies:
postfix x86_64 :2.10.-.el7 os 2.4 M Transaction Summary
========================================================================================================================================================================
Install Packages (+ Dependent packages)
Upgrade ( Dependent package) Total download size: M
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
warning: /var/cache/yum/x86_64//mysql80-community/packages/mysql-community-common-8.0.-.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY: ETA
Public key for mysql-community-common-8.0.-.el7.x86_64.rpm is not installed
(/): mysql-community-common-8.0.-.el7.x86_64.rpm | kB ::
(/): mysql-community-libs-8.0.-.el7.x86_64.rpm | 3.0 MB ::
(/): mysql-community-libs-compat-8.0.-.el7.x86_64.rpm | 2.1 MB ::
(/): numactl-libs-2.0.-.el7.x86_64.rpm | kB ::
(/): postfix-2.10.-.el7.x86_64.rpm | 2.4 MB ::
(/): mysql-community-client-8.0.-.el7.x86_64.rpm | MB ::
(/): mysql-community-server-8.0.-.el7.x86_64.rpm | MB ::
------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 8.7 MB/s | MB ::
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
Importing GPG key 0x5072E1F5:
Userid : "MySQL Release Engineering <mysql-build@oss.oracle.com>"
Fingerprint: a4a9 76fc bd3c 70c8 8c71 8d3b e1f5
Package : mysql80-community-release-el7-.noarch (installed)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Warning: RPMDB altered outside of yum.
Installing : mysql-community-common-8.0.-.el7.x86_64 /
Installing : mysql-community-libs-8.0.-.el7.x86_64 /
Installing : mysql-community-client-8.0.-.el7.x86_64 /
Installing : mysql-community-libs-compat-8.0.-.el7.x86_64 /
Installing : numactl-libs-2.0.-.el7.x86_64 /
Installing : mysql-community-server-8.0.-.el7.x86_64 /
Updating : :postfix-2.10.-.el7.x86_64 /
Cleanup : :postfix-2.10.-.el7.x86_64 /
Erasing : :mariadb-libs-5.5.-.el7.x86_64 /
warning: file /usr/share/mysql/ukrainian/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/ukrainian: remove failed: No such file or directory
warning: file /usr/share/mysql/swedish/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/swedish: remove failed: No such file or directory
warning: file /usr/share/mysql/spanish/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/spanish: remove failed: No such file or directory
warning: file /usr/share/mysql/slovak/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/slovak: remove failed: No such file or directory
warning: file /usr/share/mysql/serbian/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/serbian: remove failed: No such file or directory
warning: file /usr/share/mysql/russian/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/russian: remove failed: No such file or directory
warning: file /usr/share/mysql/romanian/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/romanian: remove failed: No such file or directory
warning: file /usr/share/mysql/portuguese/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/portuguese: remove failed: No such file or directory
warning: file /usr/share/mysql/polish/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/polish: remove failed: No such file or directory
warning: file /usr/share/mysql/norwegian/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/norwegian-ny/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/norwegian-ny: remove failed: No such file or directory
warning: file /usr/share/mysql/norwegian: remove failed: No such file or directory
warning: file /usr/share/mysql/korean/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/korean: remove failed: No such file or directory
warning: file /usr/share/mysql/japanese/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/japanese: remove failed: No such file or directory
warning: file /usr/share/mysql/italian/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/italian: remove failed: No such file or directory
warning: file /usr/share/mysql/hungarian/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/hungarian: remove failed: No such file or directory
warning: file /usr/share/mysql/greek/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/greek: remove failed: No such file or directory
warning: file /usr/share/mysql/german/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/german: remove failed: No such file or directory
warning: file /usr/share/mysql/french/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/french: remove failed: No such file or directory
warning: file /usr/share/mysql/estonian/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/estonian: remove failed: No such file or directory
warning: file /usr/share/mysql/english/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/english: remove failed: No such file or directory
warning: file /usr/share/mysql/dutch/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/dutch: remove failed: No such file or directory
warning: file /usr/share/mysql/danish/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/danish: remove failed: No such file or directory
warning: file /usr/share/mysql/czech/errmsg.sys: remove failed: No such file or directory
warning: file /usr/share/mysql/czech: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/swe7.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/macroman.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/macce.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/latin7.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/latin5.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/latin2.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/latin1.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/koi8u.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/koi8r.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/keybcs2.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/hp8.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/hebrew.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/greek.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/geostd8.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/dec8.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/cp866.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/cp852.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/cp850.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/cp1257.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/cp1256.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/cp1251.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/cp1250.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/ascii.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/armscii8.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/README: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets/Index.xml: remove failed: No such file or directory
warning: file /usr/share/mysql/charsets: remove failed: No such file or directory
warning: file /usr/share/mysql: remove failed: No such file or directory
warning: file /usr/lib64/mysql/plugin/mysql_clear_password.so: remove failed: No such file or directory
warning: file /usr/lib64/mysql/plugin/dialog.so: remove failed: No such file or directory
warning: file /usr/lib64/mysql/libmysqlclient.so.18.0.: remove failed: No such file or directory
Verifying : numactl-libs-2.0.-.el7.x86_64 /
Verifying : mysql-community-client-8.0.-.el7.x86_64 /
Verifying : mysql-community-libs-compat-8.0.-.el7.x86_64 /
Verifying : :postfix-2.10.-.el7.x86_64 /
Verifying : mysql-community-libs-8.0.-.el7.x86_64 /
Verifying : mysql-community-server-8.0.-.el7.x86_64 /
Verifying : mysql-community-common-8.0.-.el7.x86_64 /
Verifying : :mariadb-libs-5.5.-.el7.x86_64 /
Verifying : :postfix-2.10.-.el7.x86_64 / Installed:
mysql-community-libs.x86_64 :8.0.-.el7 mysql-community-libs-compat.x86_64 :8.0.-.el7 mysql-community-server.x86_64 :8.0.-.el7 Dependency Installed:
mysql-community-client.x86_64 :8.0.-.el7 mysql-community-common.x86_64 :8.0.-.el7 numactl-libs.x86_64 :2.0.-.el7 Dependency Updated:
postfix.x86_64 :2.10.-.el7 Replaced:
mariadb-libs.x86_64 :5.5.-.el7 Complete!
上面的安装过程有点长，可以看到它默认给我们安装了最新版本的mysql8，当然你也可以自己指定版本。另外它在安装时会去删掉原有的卸载残留，不过因为我们已经提前删掉了，所以会出现那一堆warnning提示删除卸载残留文件时没找到文件。
4、启动mysql
# service mysqld start
Redirecting to /bin/systemctl start mysqld.service
# service mysqld status
Redirecting to /bin/systemctl status mysqld.service
鈼[0m mysqld.service - MySQL Server
Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
Active: active (running) since Sat -- :: CST; 15s ago
Docs: man:mysqld()
http://dev.mysql.com/doc/refman/en/using-systemd.html
Process: ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=/SUCCESS)
Main PID: (mysqld)
Status: "SERVER_OPERATING"
CGroup: /system.slice/mysqld.service
鈹斺攢11772 /usr/sbin/mysqld May :: VM_0_17_centos systemd[]: Starting MySQL Server...
May :: VM_0_17_centos systemd[]: Started MySQL Server.
5、找初始密码
# grep 'temporary password' /var/log/mysqld.log
--03T23::.160286Z [Note] [MY-] [Server] A temporary password is generated for root@localhost: c-uo(;XAc2FD
这里的c-uo(;XAc2FD就是我的初始密码，复制它去登陆mysql。
6、登陆并修改密码
# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is
Server version: 8.0. Copyright (c) , , 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> ALTER USER 'root'@'localhost' IDENTIFIED BY 'Root123@';
Query OK, rows affected (0.03 sec)
这里说下密码规则：8位以上，大小写字母、数字和特殊字母。
7、创建个新库来用：
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
rows in set (0.00 sec) mysql> create database test;
Query OK, row affected (0.03 sec) mysql> use test;
Database changed
mysql> show tables;
Empty set (0.00 sec)
8、重启mysql，使用新密码登陆，开始接入应用
# service mysqld restart
Redirecting to /bin/systemctl restart mysqld.service
这里我是给安装mysql的机器自己用的，所以没有开发端口给远程。需要本地远程机器的话还得再设置一下，这里就不展开了。
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