mysql8.0版本部署+日志清理+rsync备份策略

mysql安装：https://blog.csdn.net/qq_39399966/article/details/120205461

系统：centos7.9

数据库版本：mysql8.0.28

1.卸载旧的mysql,保证环境纯净

rpm -qa | grep mariadb

mariadb-5....

rpm -e --nodeps 软件

rpm -e --nodeps mariadb-5...

rpm -qa | grep -i mysql #查看是否安装过mysql

#查找mysql文件，并将其删除

find / -name mysql

whereis mysql

rm -rf 查询到的mysql路径

rm /etc/my.cnf

rpm -qa | grep -i mysql

#uname -m

arch

x86_64 #我的是x86

#拉取包,如果你是arch，下载https://mirrors.aliyun.com/mysql/MySQL-8.0/mysql-8.0.28-1.el7.aarch64.rpm-bundle.tar

wget https://mirrors.aliyun.com/mysql/MySQL-8.0/mysql-8.0.28-1.el7.x86_64.rpm-bundle.tar

#安装依赖

yum install openssl-devel perl-Test-Simple perl-JSON.noarch perl.x86_64 perl-devel.x86_64 autoconf numactl openssl-devel.x86_64 openssl.x86_64 -y

#rpm安装顺序

#1梯队

rpm -ivh mysql-community-common-8.0.26-1.el7.x86_64.rpm --nodeps

rpm -ivh mysql-community-libs-8.0.26-1.el7.x86_64.rpm --nodeps

rpm -ivh mysql-community-client-8.0.26-1.el7.x86_64.rpm --nodeps

rpm -ivh mysql-community-server-8.0.26-1.el7.x86_64.rpm --nodeps

#2梯队

rpm -ivh mysql-community-libs-compat-8.0.26-1.el7.x86_64.rpm --nodeps

rpm -ivh mysql-community-embedded-compat-8.0.26-1.el7.x86_64.rpm --nodeps

rpm -ivh mysql-community-devel-8.0.26-1.el7.x86_64.rpm --nodeps

rpm -ivh mysql-community-test-8.0.26-1.el7.x86_64.rpm --nodeps

#数据库初始化

mysqld --initialize --console

#目录授权

chown -R mysql:mysql /var/lib/mysql/

#启动

systemctl start mysqld && systemctl enable --now mysqld && systemctl status mysqld

#查看密码

cat /var/log/mysqld.log | grep password

#登录

mysql -u root -p

#改密码

alter USER 'root'@'localhost' IDENTIFIED BY 'W!@f2rfsdf;';

#登录授权

use mysql;

select host, user, authentication_string, plugin from user;

update user set host = "%" where user='root';

flush privileges;

#密码验证方式更改

use mysql;

alter USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'heihei3431@：';

flush privileges;

#创建用户并授权

CREATE USER 'xixi'@'%' IDENTIFIED BY 'heihei@13のqednasdo11';

GRANT ALL PRIVILEGES ON *.* TO 'xixi'@'%' WITH GRANT OPTION;

ALTER USER 'xixi'@'%' IDENTIFIED WITH mysql_native_password BY 'heihei@13のqednasdo11';

FLUSH PRIVILEGES;

UPDATE mysql.user SET authentication_string = PASSWORD('qwc@113.'), plugin = 'mysql_native_password' WHERE User = 'root' AND Host = 'localhost';

FLUSH PRIVILEGES;

----------------------mysql：热备份，清理日志数据，注意：mysql服务器需要和远程服务器是免密登录，创建公私钥,这个脚本只是实现了全备

#脚本功能：

#1.清理二进制日志binlog

#2.清理错误日志（Error Log）。

#3.清理慢查询日志（Slow Query Log）。

#4.执行全量备份。

#5.将备份文件上传到远程服务器。

前言:需要替换你的日志路径，每个人的情况不一样

yum -y install rsync

#远程服务器：

ssh-keygen -t rsa -b 2048

ssh-copy-id 150mysql

mkdir -p /store/mysql

chmod 755 /store/mysql

#mysql服务器：

ssh-keygen -t rsa -b 2048

ssh-copy-id 136node

mkdir -p /backup/{mysql,script，logs}

chmod -R 755 /backup/{mysql,script,logs}

mysql_config_editor set --login-path=backup --user=root --password #插件存储密码，用户脚本免交互登录mysql

#日志存放位置查看

mysql -uroot -p

show variables like '%log_error%'; #查看错误日志，报错查看这个日志

log-error=/var/log/mysql/error.log

show variables like '%log_bin%'; #binlog日志用于数据恢复，show variables like '%binlog_format%'; #查看binlog记录信息的方式 ROW行记录

log_bin=/var/lib/mysql/mysql-bin

SHOW VARIABLES LIKE 'slow_query_log'; #查看慢日志

/var/log/mysql/mysql-slow.log

vim /etc/my.cnf

client

sock=/data/mysql/mysql.sock

mysqld

datadir=/data/mysql

socket=/data/mysql/mysql.sock

log-error=/var/log/mysql/error.log

pid-file=/var/run/mysqld/mysqld.pid

log_bin=/data/mysql/mysql-bin

slow_query_log = 1

slow_query_log_file = /var/log/mysql/mysql-slow.log

long_query_time = 2

sudo mkdir -p /var/log/mysql

sudo chown -R mysql:mysql /var/log/mysql

systemctl restart mysqld

---【全量备份+热备份+rsync】

datadir=/data/mysql

socket=/data/mysql/mysql.sock

log-error=/var/log/mysql/error.log

pid-file=/var/run/mysqld/mysqld.pid

log_bin=/data/mysql/mysql-bin

slow_query_log = 1

slow_query_log_file = /var/log/mysql/mysql-slow.log

long_query_time = 2

2.脚本里的socket路径更改/data/mysql/

SOCKET_FILE="/data/mysql/mysql.sock"

systemctl restart mysqld

#还有报错查看

tail -f /var/spool/mail/root

journalctl -xe | grep mysqld