最简单的安装mysql数据库办法:yum配置

去mysql官网下载yum配置文件，

按操作系统版本下载：

https://dev.mysql.com/downloads/repo/yum/

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# ll mysql*

-rw-r--r-- 1 root root 25680 Dec 20 11:31 mysql57-community-release-el7-11.noarch.rpm

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# yum localinstall mysql57-community-release-el7-11.noarch.rpm

Loaded plugins: fastestmirror, langpacks

Examining mysql57-community-release-el7-11.noarch.rpm: mysql57-community-release-el7-11.noarch

Marking mysql57-community-release-el7-11.noarch.rpm to be installed

Resolving Dependencies

--> Running transaction check

---> Package mysql57-community-release.noarch 0:el7-11 will be installed

--> Finished Dependency Resolution

Dependencies Resolved

========================================================================================================================================================================================================

Package Arch Version Repository Size

Installing:

mysql57-community-release noarch el7-11 /mysql57-community-release-el7-11.noarch 31 k

Transaction Summary

Install 1 Package

Total size: 31 k

Installed size: 31 k

Is this ok [y/d/N]: y

Downloading packages:

Running transaction check

Running transaction test

Transaction test succeeded

Running transaction

Warning: RPMDB altered outside of yum.

** Found 2 pre-existing rpmdb problem(s), 'yum check' output follows:

ipa-client-common-4.4.0-14.el7.centos.7.noarch has installed conflicts freeipa-client-common: ipa-client-common-4.4.0-14.el7.centos.7.noarch

ipa-common-4.4.0-14.el7.centos.7.noarch has installed conflicts freeipa-common: ipa-common-4.4.0-14.el7.centos.7.noarch

Installing : mysql57-community-release-el7-11.noarch 1/1

Verifying : mysql57-community-release-el7-11.noarch 1/1

Installed:

mysql57-community-release.noarch 0:el7-11

Complete!

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# yum list mysql

Loaded plugins: fastestmirror, langpacks

http://repo.mysql.com/yum/mysql-connectors-community/el/7/x86_64/repodata/repomd.xml: [Errno 12] Timeout on http://repo.mysql.com/yum/mysql-connectors-community/el/7/x86_64/repodata/repomd.xml: (28, 'Connection timed out after 30001 milliseconds')

Trying other mirror.

这里是因为网络不通唱。

[root@VM_64_101_centos ~]# yum install mysql

Loaded plugins: fastestmirror, langpacks

epel | 4.7 kB 00:00:00

extras | 3.4 kB 00:00:00

Trying other mirror.

=======================================

CentOS 7下yum成功安装 MySQL 5.7

第一部分：CentOS 7安装MySQL 5.7

1.下载YUM库

shell > wget http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm

2.安装YUM库

shell > yum localinstall -y mysql57-community-release-el7-7.noarch.rpm

3.安装数据库

shell > yum install -y mysql-community-server

4.启动MySQL服务

shell > systemctl start mysqld.service

5.默认空密码

shell > mysql -uroot -p

6.重置root密码后重启mysql服务

shell > update mysql.user set authentication_string=password("yourpassword") where user="root" and Host="localhost";

shell > flush privileges;

shell > quit;

shell > systemctl restart mysqld;

如果手贱或者不知道啥原因出现如下问题：

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

请修改my.cnf,添加skip-grant-tables和skip-networking：

shell > vi /etc/my.cnf

[mysqld]

skip-grant-tables

skip-networking

重启mysql，然后重复以上修改密码步骤即可，记得修改完后，去掉my.cnf添加的两行。

第二部分：配置

1、添加远程登录用户(登入Mysql)

use mysql;

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '你的密码' WITH GRANT OPTION;

注：'%'代表任意地址，也可以指定IP

2、检查用户表，刷新内存权限

select host, user from user;

FLUSH PRIVILEGES;

CentOS 7下yum成功安装 MySQL 5.7

3、设置防火墙(CentOS7 不推荐)

vi /etc/sysconfig/iptables

在-A RH-Firewall-1-INPUT -j REJECT –reject-with icmp-host-prohibited之前，添加

-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT

重启防火墙

service iptables restart

注：centos7使用的是firewall防火墙

　　systemctl stop firewalld.service #停止

　　systemctl disable firewalld.service #禁用

4、设置字符编码集和区分大小写

4.1修改mysql配置文件（设置字符编码集）

默认位置：/etc/my.cnf

进入etc文件夹>>vim my.cnf

[mysqld]

character-set-server=utf8

collation-server=utf8_general_ci

CentOS 7下yum成功安装 MySQL 5.7

* systemctl restart mysql.service #重启MySQL

* 查看当前mysql运行状态

mysql>status

参数说明：

haracter_set_client：客户端请求数据的字符集。

character_set_connection：从客户端接收到数据，然后传输的字符集。

character_set_database：默认数据库的字符集，无论默认数据库如何改变，都是这个字符集；如果没有默认数据库，使character_set_server指定的字符集，此参数无需设置。

character_set_filesystem：把操作系统上文件名转化成此字符集，即把character_set_client转换character_set_filesystem，默认binary即可。

character_set_results：结果集的字符集。

character_set_server：数据库服务器的默认字符集。

character_set_system：这个值总是utf8，不需要设置，存储系统元数据的字符集。

4.2修改mysql配置文件（设置区分大小写）

lower_case_table_names 参数详解：

0：区分大小写

1：不区分大小写

==============================================================

CentOS 7 卸载玛丽亚并yum成功安装 MySQL 5.7

首先CentOS7 已经不自带mysql，因为收费了你懂得，

所以内部集成了mariadb，而安装mysql的话会和mariadb的文件冲突，所以需要先卸载掉mariadb，以下为卸载mariadb，安装mysql的步骤。

#列出所有被安装的rpm package

rpm -qa | grep mariadb

#卸载

rpm -e mariadb-libs-5.5.37-1.el7_0.x86_64

错误：依赖检测失败：

libmysqlclient.so.18()(64bit) 被 (已安裝) postfix-2:2.10.1-6.el7.x86_64 需要

libmysqlclient.so.18(libmysqlclient_18)(64bit) 被 (已安裝) postfix-2:2.10.1-6.el7.x86_64 需要

#强制卸载，因为没有--nodeps

rpm -e --nodeps mariadb-libs-5.5.37-1.el7_0.x86_64

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -e mariadb-libs

error: Failed dependencies:

libmysqlclient.so.18()(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64

libmysqlclient.so.18(libmysqlclient_18)(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64

[root@VM_64_101_centos ~]# rpm -e --nodeps mariadb-libs

[root@VM_64_101_centos ~]# rpm -qa |grep mariadb

[root@VM_64_101_centos ~]#

#安装mysql依赖

yum install vim libaio net-tools

其他情况：

1、centos下yum暂时没有mysql-server直接安装包；

MariaDB是MySQL社区开发的分支，也是一个增强型的替代品;

2、安装MariaDB

yum -y install mariadb-server mariadb mariadb-devel

systemctl start mariadb

systemctl enable mariadb

mysql_secure_installation

firewall-cmd --permanent --add-service mysql

systemctl restart firewalld.service

iptables -L -n|grep 3306

CentOS7的yum源中默认好像是没有mysql的。为了解决这个问题，我们要先下载mysql的repo源。

1. 下载mysql的repo源

$ wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm

2. 安装mysql-community-release-el7-5.noarch.rpm包

$ sudo rpm -ivh mysql-community-release-el7-5.noarch.rpm

安装这个包后，会获得两个mysql的yum repo源：/etc/yum.repos.d/mysql-community.repo，/etc/yum.repos.d/mysql-community-source.repo。

3. 安装mysql

$ sudo yum install mysql-server

根据步骤安装就可以了，不过安装完成后，没有密码，需要重置密码。

4. 重置密码

重置密码前，首先要登录

$ mysql -u root

登录时有可能报这样的错：ERROR 2002 (HY000): Can‘t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock‘ (2)，原因是/var/lib/mysql的访问权限问题。下面的命令把/var/lib/mysql的拥有者改为当前用户：

$ sudo chown -R openscanner:openscanner /var/lib/mysql

然后，重启服务：

$ service mysqld restart

接下来登录重置密码：

$ mysql -u root

mysql > use mysql;

mysql > update user set password=password(‘123456‘) where user=‘root‘;

mysql > exit;

5. 开放3306端口

$ sudo vim /etc/sysconfig/iptables

添加以下内容：

-A INPUT -p tcp -m state --state NEW -m tcp --dport 3306 -j ACCEPT

保存后重启防火墙：

$ sudo service iptables restart

这样从其它客户机也可以连接上mysql服务了。

MYSQL启动后报：ERROR! The server quit without updating PID file错误的问题解决

MYSQL日志：Can't find file: './mysql/plugin.frm' (errno: 13 - Permission denied)

1、权限不够：chown -R mysql:mysql /home/mysql/data” “chmod -R 755 /home/mysql/data

2、centos7的selinux问题：打开/etc/selinux/config，把SELINUX=enforcing改为SELINUX=disabled后存盘退出重启机器。

mysql rpm包的先后循序依赖关系

==============================================

正好按文件size 从小到大安装顺序

-rw-r--r-- 1 root root 272K Dec 20 16:25 mysql-community-common-5.7.20-1.el7.x86_64.rpm

-rw-r--r-- 1 root root 2.2M Dec 20 16:20 mysql-community-libs-5.7.20-1.el7.x86_64.rpm

-rw-r--r-- 1 root root 3.7M Dec 20 16:04 mysql-community-devel-5.7.20-1.el7.x86_64.rpm

-rw-r--r-- 1 root root 24M Dec 20 16:05 mysql-community-client-5.7.20-1.el7.x86_64.rpm

-rw-r--r-- 1 root root 164M Dec 20 16:34 mysql-community-server-5.7.20-1.el7.x86_64.rpm

[root@VM_64_101_centos ~]# rpm -ivh

rpm: no packages given for install

[root@VM_64_101_centos ~]# rpm -ivh

rpm: no packages given for install

[root@VM_64_101_centos ~]# rpm -ivh mysql-community-devel-5.7.20-1.el7.x86_64.rpm

warning: mysql-community-devel-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

error: Failed dependencies:

libmysqlclient.so.20()(64bit) is needed by mysql-community-devel-5.7.20-1.el7.x86_64

mysql-community-libs(x86-64) >= 5.7.9 is needed by mysql-community-devel-5.7.20-1.el7.x86_64

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -ivh mysql-community-server-5.7.20-1.el7.x86_64.rpm

warning: mysql-community-server-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

error: Failed dependencies:

mysql-community-client(x86-64) >= 5.7.9 is needed by mysql-community-server-5.7.20-1.el7.x86_64

mysql-community-common(x86-64) = 5.7.20-1.el7 is needed by mysql-community-server-5.7.20-1.el7.x86_64

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -ivh mysql-community-client-5.7.20-1.el7.x86_64.rpm

warning: mysql-community-client-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

error: Failed dependencies:

mysql-community-libs(x86-64) >= 5.7.9 is needed by mysql-community-client-5.7.20-1.el7.x86_64

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -ivh mysql-community-libs-5.7.20-1.el7.x86_64.rpm

warning: mysql-community-libs-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

error: Failed dependencies:

mysql-community-common(x86-64) >= 5.7.9 is needed by mysql-community-libs-5.7.20-1.el7.x86_64

[root@VM_64_101_centos ~]#

sample

====================================

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -qa |grep mysql

mysql57-community-release-el7-11.noarch

[root@VM_64_101_centos ~]# rpm -e mysql57-community-release-el7-11.noarch

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -qa |grep mysql

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -ivh mysql-community-common

error: open of mysql-community-common failed: No such file or directory

[root@VM_64_101_centos ~]# rpm -ivh mysql-community-common*

warning: mysql-community-common-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

Preparing... ################################# [100%]

Updating / installing...

1:mysql-community-common-5.7.20-1.e################################# [100%]

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -qa |grep mysql

mysql-community-common-5.7.20-1.el7.x86_64

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -ivh mysql-community-devel-5.7.20-1.el7.x86_64.rpm

warning: mysql-community-devel-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

error: Failed dependencies:

libmysqlclient.so.20()(64bit) is needed by mysql-community-devel-5.7.20-1.el7.x86_64

mysql-community-libs(x86-64) >= 5.7.9 is needed by mysql-community-devel-5.7.20-1.el7.x86_64

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -ivh mysql-community-libs-5.7.20-1.el7.x86_64.rpm

warning: mysql-community-libs-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

Preparing... ################################# [100%]

Updating / installing...

1:mysql-community-libs-5.7.20-1.el7################################# [100%]

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -qa |grep mysql

mysql-community-libs-5.7.20-1.el7.x86_64

mysql-community-common-5.7.20-1.el7.x86_64

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -ivh mysql-community-devel-5.7.20-1.el7.x86_64.rpm

warning: mysql-community-devel-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

Preparing... ################################# [100%]

Updating / installing...

1:mysql-community-devel-5.7.20-1.el################################# [100%]

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -ivh mysql-community-client-5.7.20-1.el7.x86_64.rpm

warning: mysql-community-client-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

Preparing... ################################# [100%]

Updating / installing...

1:mysql-community-client-5.7.20-1.e################################# [100%]

[root@VM_64_101_centos ~]# which mysql

/usr/bin/mysql

[root@VM_64_101_centos ~]# mysql -uroot -p

Enter password:

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

[root@VM_64_101_centos ~]# mysql -uroot -p

Enter password:

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -qa |grep mysql

mysql-community-devel-5.7.20-1.el7.x86_64

mysql-community-libs-5.7.20-1.el7.x86_64

mysql-community-common-5.7.20-1.el7.x86_64

mysql-community-client-5.7.20-1.el7.x86_64

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -ivh mysql-community-server-5.7.20-1.el7.x86_64.rpm

warning: mysql-community-server-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

Preparing... ################################# [100%]

Updating / installing...

1:mysql-community-server-5.7.20-1.e################################# [100%]

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# rpm -qa |grep mysql

mysql-community-devel-5.7.20-1.el7.x86_64

mysql-community-libs-5.7.20-1.el7.x86_64

mysql-community-common-5.7.20-1.el7.x86_64

mysql-community-server-5.7.20-1.el7.x86_64

mysql-community-client-5.7.20-1.el7.x86_64

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# grep 'temporary password' /var/log/mysqld.log

2017-12-20T09:02:40.636290Z 1 [Note] A temporary password is generated for root@localhost: Fci&(oMns6kz

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# grep 'temporary password' /var/log/mysqld.log

2017-12-20T09:02:40.636290Z 1 [Note] A temporary password is generated for root@localhost: Fci&(oMns6kz

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# mysql -uroot -pFci&(oMns6kz

> ^C

[root@VM_64_101_centos ~]# mysql -uroot -pFci&(oMns6kz

> ^C

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# mysql -uroot -pFci&(oMns6kz

> ^C

[root@VM_64_101_centos ~]# mysql -uroot -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 4

Server version: 5.7.20

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>

mysql> alter user root@localhost identified by 'Qwerrttyui123!';

Query OK, 0 rows affected (0.00 sec)

[root@VM_64_101_centos ~]# systemctl list-unit-files|grep sql

mysqld.service enabled

mysqld@.service disabled

[root@VM_64_101_centos ~]#

[root@VM_64_101_centos ~]# systemctl status mysqld.service

* mysqld.service - MySQL Server

Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)

Active: inactive (dead)

Docs: man:mysqld(8)

http://dev.mysql.com/doc/refman/en/using-systemd.html

[root@VM_64_101_centos ~]# systemctl start mysqld.service

[root@VM_64_101_centos ~]# systemctl status mysqld.service

* mysqld.service - MySQL Server

Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)

Active: active (running) since Wed 2017-12-20 17:02:51 CST; 5s ago

Docs: man:mysqld(8)

http://dev.mysql.com/doc/refman/en/using-systemd.html

mysqlimport

============================================

[li@MK1 20161230]$ tar -zcvf /tmp/zn.tar.gz SQzn*

SQzn1701.csv

SQzn1702.csv

SQzn1703.csv

SQzn1704.csv

SQzn1705.csv

SQzn1706.csv

SQzn1707.csv

SQzn1708.csv

SQzn1709.csv

SQzn1710.csv

SQzn1711.csv

SQzn1712.csv

SQznMI.csv

[li@MK1 20161230]$

[li@MK1 20161230]$ tar -zcvf zn.tar.gz SQzn*

tar (child): zn.tar.gz：无法 openSQzn1701.csv

: 权限不够

tar (child): Error is not recoverable: exiting now

SQzn1702.csv

[li@MK1 20161230]$

my.cnf 怎么修改都不起作用

============================

今天发现一个MySQL实例启动故障，处理过程如下：

发现mysql实例是关闭的，执行命令启动mysql实例时有警告：

# service mysql.server start

Warning: World-writable config file '/etc/my.cnf' is ignored

Starting MySQL SUCCESS!

观察mysql的启动日志，在日志中显示：

151014 11:39:24 mysqld_safe Starting mysqld daemon with databases from /data/mysql/data

Warning: World-writable config file '/etc/my.cnf' is ignored

大概意思是权限全局可写，任何一个用户都可以写。mysql担心这种文件被其他用户恶意修改，所以忽略掉这个配置文件。

此时查询MySQL数据库中的配置，发现一些my.cnf配置的参数，在mysql实例中并没有生效。

这个是因为 /etc/my.cnf 也被修改为 777权限了：

# ls -la /etc/my.cnf

-rwxrwxrwx 1 root root 1120 Jul 31 10:28 /etc/my.cnf

/etc/my.cnf 权限过大，会影响实例不能启动，或者不能关闭，需要修改为 644.操作如下：

# ls -la /etc/my.cnf

-rwxrwxrwx 1 root root 1120 Jul 31 10:28 /etc/my.cnf

# chmod 644 /etc/my.cnf

# ls -la /etc/my.cnf

-rw-r--r-- 1 root root 1120 Jul 31 10:28 /etc/my.cnf

给mysql服务换一个不一样的名字（躲猫猫)

============================

进入目录 /etc/init.d

把名字为mysqld 或者mysql的shell脚本 cp 一份如 mysql2

chmod 644 mysql2

chkconfig --add mysql2

就好了用service 命令去启动吧！

# chkconfig --add mysql2

# chkconfig --list mysql2

mysql2 0:off 1:off 2:on 3:on 4:on 5:on 6:off

# service mysql2 start

Starting MySQL.. SUCCESS!

修改字符集

============================

[client]

default-character-set=utf8

[mysql]

default-character-set=utf8

[mysqld]

character_set_server=utf8

[client]

default-character-set=latin1

[mysql]

default-character-set=latin1

[mysqld]

character_set_server=latin1

正确的给innodb表空间添加新的数据文件

====================================================

cnf里面原来的配置如下：

innodb_data_file_path = /usr/local/mysql/data/ibdata1:18M

现在要增加一个新的数据文件，我想是200M,文件名是ibdata2，则上面的配置行修改成

innodb_data_file_path = /usr/local/mysql/data/ibdata1:18M:autoextend;/mysql/data/ibdata2:50M:autoextend

看新文件目录与第一个不同，所以必须在重启数据库之前，确保目录 /mysql/data存在且有权限

innodb_data_file_path参数虐死你个菜鸟：给mysql主表空间增加文件，修改个参数，不是第一次肯定虐死你

我觉得只有饭桶才能写出这么弱智的代码和逻辑；

以下几种都是不支持的：

innodb_data_file_path=ibdata1:10M:autoextend;ibdata02:100M:autoextend

innodb_data_file_path=ibdata1:10M:autoextend;ibdata2:100M:autoextend

innodb_data_file_path=ibdata1:10M;ibdata02:100M:autoextend

innodb_data_file_path=ibdata1:10M;ibdata3:100M:autoextendinno

db_data_file_path=ibdata1:10M;ibdata2:100M:auto extend

唯一正确的是这种

innodb_data_file_path=ibdata1:10M;ibdata2:100M:autoextend

即使格式正确了，还是加不了文件

innodb_data_file_path=ibdata1:10M;ibdata2:100M:autoextend

看看mysql有多么弱，傻逼

2017-12-24T16:03:54.305226Z 0 [Note] InnoDB: Need to create a new innodb_system data file 'ibdata2'.

2017-12-24T16:03:54.305280Z 0 [ERROR] InnoDB: The innodb_system data file './ibdata1' is of a different size 768 pages (rounded down to MB) than the 640 pages specified in the .cnf file!

2017-12-24T16:03:54.249641Z 0 [Note] InnoDB: PUNCH HOLE support available

2017-12-24T16:03:54.249651Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

2017-12-24T16:03:54.249657Z 0 [Note] InnoDB: Uses event mutexes

2017-12-24T16:03:54.249665Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier

2017-12-24T16:03:54.249671Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3

2017-12-24T16:03:54.249811Z 0 [Note] InnoDB: Using Linux native AIO

2017-12-24T16:03:54.250597Z 0 [Note] InnoDB: Number of pools: 1

2017-12-24T16:03:54.250829Z 0 [Note] InnoDB: Using CPU crc32 instructions

2017-12-24T16:03:54.258084Z 0 [Note] InnoDB: Initializing buffer pool, total size = 512M, instances = 1, chunk size = 128M

2017-12-24T16:03:54.287632Z 0 [Note] InnoDB: Completed initialization of buffer pool

2017-12-24T16:03:54.295137Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().

2017-12-24T16:03:54.305226Z 0 [Note] InnoDB: Need to create a new innodb_system data file 'ibdata2'.

2017-12-24T16:03:54.305280Z 0 [ERROR] InnoDB: The innodb_system data file './ibdata1' is of a different size 768 pages (rounded down to MB) than the 640 pages specified in the .cnf file!

2017-12-24T16:03:54.305297Z 0 [ERROR] InnoDB: Plugin initialization aborted with error Generic error

2017-12-24T16:03:54.905734Z 0 [ERROR] Plugin 'InnoDB' init function returned error.

2017-12-24T16:03:54.940973Z 0 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.

2017-12-24T16:03:54.940973Z 0 [ERROR] Failed to initialize plugins.

2017-12-24T16:03:54.940973Z 0 [ERROR] Aborting

2017-12-24T16:03:54.940973Z 0 [Note] Binlog end

2017-12-24T16:03:54.940980Z 0 [Note] Shutting down plugin 'CSV'

2017-12-24T16:03:54.941249Z 0 [Note] /usr/sbin/mysqld: Shutdown complete

open参数

============================

2017-12-25T08:00:15.387655Z 0 [Warning] Could not increase number of max_open_files to more than 5000 (request: 12670)

2017-12-25T08:00:15.387811Z 0 [Warning] Changed limits: table_open_cache: 1495 (requested 5330)

2017-12-25T08:00:15.557490Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).

2017-12-25T08:00:15.559303Z 0 [Warning] Insecure configuration for --secure-file-priv: Data directory is accessible through --secure-file-priv. Consider choosing a different directory.

2017-12-25T08:00:15.559312Z 0 [Warning] Insecure configuration for --secure-file-priv: Location is accessible to all OS users. Consider choosing a different directory.

2017-12-25T08:00:15.559349Z 0 [Note] /usr/sbin/mysqld (mysqld 5.7.20-log) starting as process 20183 ...

2017-12-25T08:00:15.562992Z 0 [Warning] option 'innodb-read-io-threads': unsigned value 256 adjusted to 64

2017-12-25T08:00:15.563383Z 0 [Warning] InnoDB: Using innodb_file_format is deprecated and the parameter may be removed in future releases. See http://dev.mysql.com/doc/refman/5.7/en/innodb-file-format.html

[root@VM_64_101_centos etc]# cat my.cnf|grep open_

innodb_open_files=300

open_files_limit=5000

table_open_cache =5330

innodb_open_files=5000

Could not increase number of max_open_files to more than 5000 (request: 12670)

max_open_files = table_open_cache*2 + 2010

ex:12670 = 5330*2 + 2010

Changed limits: table_open_cache: 1495 (requested 5330)

table_open_cache =5330

这个包最好也装上，要不后面很多开发包装不了

mysql-community-libs-compat-5.7.20-1.el7.x86_64

=================================================

[root@VM_64_101_centos /]# rpm -e mysql-community-libs-compat

error: Failed dependencies:

libmysqlclient.so.18()(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64

libmysqlclient.so.18()(64bit) is needed by (installed) MySQL-python-1.2.5-1.el7.x86_64

libmysqlclient.so.18(libmysqlclient_18)(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64

libmysqlclient.so.18(libmysqlclient_18)(64bit) is needed by (installed) MySQL-python-1.2.5-1.el7.x86_64

[root@VM_64_101_centos /]#

[root@VM_64_101_centos mysql]# ll

total 39988

-rw-r--r-- 1 root root 21358968 Sep 14 00:15 libmysqlclient.a

lrwxrwxrwx 1 root root 20 Dec 20 16:47 libmysqlclient.so -> libmysqlclient.so.20

lrwxrwxrwx 1 root root 24 Dec 26 01:16 libmysqlclient.so.18 -> libmysqlclient.so.18.1.0

-rwxr-xr-x 1 root root 9580608 Sep 14 00:07 libmysqlclient.so.18.1.0

lrwxrwxrwx 1 root root 24 Dec 20 16:47 libmysqlclient.so.20 -> libmysqlclient.so.20.3.7

-rwxr-xr-x 1 root root 9884704 Sep 14 00:15 libmysqlclient.so.20.3.7

lrwxrwxrwx 1 root root 20 Dec 26 01:16 libmysqlclient_r.so.18 -> libmysqlclient.so.18

lrwxrwxrwx 1 root root 24 Dec 26 01:16 libmysqlclient_r.so.18.1.0 -> libmysqlclient.so.18.1.0

-rw-r--r-- 1 root root 44102 Sep 14 00:13 libmysqlservices.a

drwxr-xr-x 4 root root 4096 Dec 20 16:48 mecab

drwxr-xr-x 3 root root 4096 Dec 20 16:48 plugin

[root@VM_64_101_centos mysql]# ^C

最简单的安装mysql数据库办法:yum配置

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