percona-xtrabackup-24使用

前言

• percona-xtrabackup有两个版本，2.x和8.x，2.x支持mysql5。
• 版本：mysql5.7.37，系统centos7

安装

rpm -qa | grep -i 'mysql-community'
rpm -qa | grep -i 'percona-xtrabackup'

rpm -ivh mysql-community-common-5.7.37-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.37-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.37-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.37-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-compat-5.7.37-1.el7.x86_64.rpm
yum install percona-xtrabackup-24.x86_64

innobackupex使用

# 备份文件到/backup目录
mkdir /backup
innobackupex --defaults-file=/etc/my.cnf --user=root --password='root' /backup/
# 停止mysql服务，备份原有文件
service mysqld stop
mkdir /var/lib/mysqlbak
mv /var/lib/mysql/*  /var/lib/mysqlbak
# 恢复步骤一
innobackupex --defaults-file=/etc/my.cnf --user=root --password='root' --apply-log /backup/2022-04-03_21-01-06/
# 恢复步骤二
innobackupex --defaults-file=/etc/my.cnf --user=root --password='root' --copy-back /backup/2022-04-03_21-01-06/
# 恢复步骤三
chown -R mysql:mysql /var/lib/mysql

# 增量备份
innobackupex --defaults-file=/etc/my.cnf --user=root --password='root' --incremental-basedir=/backup/2022-04-03_21-01-06/ --incremental /backup1/