linux CentOS 7 安装mysql5.7 遇到的问题

centos 7.1

mysql 5.7.19；官网下载地址：http://dev.mysql.com/downloads/mysql/

 

安装过程参考：http://blog.csdn.net/shuai825644975/article/details/54315424

 

安装问题：

1、执行 sudo rpm -ivh --force mysql-xxxx 命令

报错：error: Failed dependencies: xxx

在命令后加：--nodeps --force；如：sudo rpm -ivh --force mysql-community-libs-5.7.19-1.el6.x86_64.rpm --nodeps --force

 

2、启动、停止、重启命令

systemctl start mysqld

systemctl stop mysqld

systemctl restart mysqld

 

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启动问题：

启动可能会提示：Job for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe" for details.

 

可执行systemctl status mysqld.service 或journalctl -xe 查看详情

 

1、没有libaio.so.1包

/usr/sbin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory

64位系统安装：

（centos 6）wget http://mirror.centos.org/centos/6/os/x86_64/Packages/libaio-0.3.107-10.el6.x86_64.rpm

（centos 7）wget http://mirror.centos.org/centos/7/os/x86_64/Packages/libaio-0.3.109-13.el7.x86_64.rpm

rpm -ivh libaio-0.3.107-10.el6.x86_64.rpm

32位系统安装（yum默认安装32位）：

yum install libaio.so.1

 

2、explicit_defaults_for_timestamp

TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp serve

修改my.cnf文件

路径：/etc/my.cnf

增加一句：explicit_defaults_for_timestamp=true

 

3、数据空间已有东西存在

--initialize specified but the data directory has files in it. Aborting.

查看并进入/etc/my.cnf文件的datadir配置路径

我是新装mysql，所以直接删除全部；如果你已有数据存在，请做好备份

 

以上异常、警告解决后，mysql可以正常启动