Installing MySQL on Linux Using RPM Packages
下载安装包
mysql下载地址：https://dev.mysql.com/downloads/mysql/
环境配置
# 禁用SELINUX
setenforce 0
vi /etc/selinux/config
#-----------------------------------------------
SELINUX=disabled
#-----------------------------------------------
# 禁用防火墙
systemctl disable firewalld
systemctl stop firewalld
systemctl status firewalld
# 设置内核参数(mysql需要)
vi /etc/sysctl.d/99-sysctl.conf
#-----------------------------------------------
kernel.shmmax = 2199023255552
fs.file-max = 6815744
kernel.sem = 250 32000 100 128
kernel.shmmni = 4096
kernel.panic_on_oops = 1
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500
#-----------------------------------------------
# kernel.shmmax算法：修改为物理内容的50%、60%
# 4G:kernel.shmmax = (4G*1024*1024*1024*1024)*50% = 2199023255552
# 使内核参数生效
sysctl -p
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使用RPM包安装mysql
CentOS7下MySQL5.7的安装-RPM方式 | 一个DBA的工作学习笔记
使用RPM包标准安装mysql，相关文件在以下系统目录
| Files or Resources | Location |
|---|---|
| Client programs and scripts | /usr/bin |
| mysqld server | /usr/sbin |
| Configuration file | /etc/my.cnf |
| Data directory | /var/lib/mysql |
| Error log file | For RHEL, Oracle Linux, CentOS or Fedora platforms: /var/log/mysqld.log For SLES: /var/log/mysql/mysqld.log |
| Value of secure_file_priv | /var/lib/mysql-files |
| System V init script | For RHEL, Oracle Linux, CentOS or Fedora platforms: /etc/init.d/mysqld For SLES: /etc/init.d/mysql |
| Systemd service | For RHEL, Oracle Linux, CentOS or Fedora platforms: mysqld For SLES: mysql |
| Pid file | /var/run/mysql/mysqld.pid |
| Socket | /var/lib/mysql/mysql.sock |
| Keyring directory | /var/lib/mysql-keyring |
| Unix manual pages | /usr/share/man |
| Include (header) files | /usr/include/mysql |
| Libraries | /usr/lib/mysql |
| Miscellaneous support files (for example, error messages, and character set files) |
/usr/share/mysql |
启动mysql
# 以下两个命令都可以
service mysqld start
systemctl start mysqld.service
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查看并登陆修改初始的root密码
grep 'temporary password' /var/log/mysqld.log
#-----------------------------------------------
2017-08-23T05:56:38.197060Z 1 [Note] A temporary password is generated for root@localhost: gi._hyg/f2oJ
#-----------------------------------------------
mysql -uroot -p
# 以下两个命令都可以修改root密码
alter user 'root'@'localhost' identified by 'Center08+';
set password for root@localhost = password('Center08+');
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