大数据之在Liunx中安装MySQL
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文章目录
Linux mysql安装教程
准备工作
关闭防火墙
# 停止firewall
systemctl stop firewalld.service
# 禁止firewall开机启动
systemctl disable firewalld.service
# 查看防火墙状态
systemctl status firewalld.service
修改主机名
vim /etc/hostname
# 查看主机名
hostname
配置静态IP
# 停止NetworkManager服务
systemctl stop NetworkManager
# 取消NetworkManager服务开机自启
systemctl disable NetworkManager
# 修改配置文件,配置静态IP
cd /etc/sysconfig/network-scripts
vim ifcfg-ens33
# 以下配置仅供参考!!!需要根据自己的实际情况配置
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
NAME=ens33
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.190.100
NETMASK=255.255.255.0
GATEWAY=192.168.190.2
DNS1=192.168.190.2
# 重启网络服务
systemctl restart network
CentOS换源
1. 备份
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
2. 下载新的 CentOS-Base.repo 到 /etc/yum.repos.d/
CentOS 6
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-6.repo
CentOS 7
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
或者
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
CentOS 8
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-8.repo
或者
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-8.repo
3. 运行 yum makecache 生成缓存
4. 其他
非阿里云ECS用户会出现 Couldn’t resolve host ‘mirrors.cloud.aliyuncs.com’ 信息,不影响使用。用户也可自行修改相关配置: eg:
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo
安装mysql5.7
按照下面顺序依次复制粘贴即可
下载yum Repository
wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
安装yum Repository
yum -y install mysql57-community-release-el7-10.noarch.rpm
安装mysql5.7 m’y
yum -y install mysql-community-server
开机自启动
systemctl enable mysqld.service
启动mysql
systemctl start mysqld.service
查看状态
systemctl status mysqld.service
获取临时密码
grep "password" /var/log/mysqld.log
把获取的临时密码拷贝一下
登录mysql
mysql -uroot -p [粘贴上刚刚获取的临时密码]
关闭密码复杂验证
set global validate_password_policy=0;
set global validate_password_length=1;
设置密码
alter user user() identified by "123456";
切换数据库
use mysql;
修改权限
开放root用户远程登录
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
刷新权限
flush privileges;
查看权限
select host,user,authentication_string from user;
修改MySQL编码
-
编辑配置文件:
vim /etc/my.cnf
[client] default-character-set = utf8mb4 [mysqld] character-set-server = utf8mb4 collation-server = utf8mb4_general_ci
-
重启MySQL
systemctl restart mysqld
- 登录并查看MySQL编码
# 123456需替换为自己的密码 mysql -uroot -p123456 # 需在MySQL的shell中执行 show variables like "%char%";
其它操作
卸载yum Repository
因为安装了Yum Repository,以后每次yum操作都会自动更新,需要把这个卸载掉
yum -y remove mysql57-community-release-el7-10.noarch
卸载mysql
删除依赖包
rpm -qa |grep -i mysql
yum remove mysql-community mysql-community-server mysql-community-libs mysql-community-common
清理文件
find / -name mysql
rm -rf [文件名]
到底啦!给靓仔一个关注吧!💝
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