1、查看mysql版本、mysql状态
[root@k8s-129 mysql]# mysql -V
mysql Ver 8.0.33 for Linux on x86_64 (MySQL Community Server - GPL)
[root@k8s-129 mysql]# systemctl status mysql
● mysqld.service - LSB: start and stop MySQL
Loaded: loaded (/etc/rc.d/init.d/mysqld; bad; vendor preset: disabled)
Active: active (running) since Mon 2024-04-01 17:18:07 CST; 10min ago
Docs: man:systemd-sysv-generator(8)
Process: 57880 ExecStop=/etc/rc.d/init.d/mysqld stop (code=exited, status=0/SUCCESS)
Process: 57915 ExecStart=/etc/rc.d/init.d/mysqld start (code=exited, status=0/SUCCESS)
Tasks: 41
Memory: 569.0M
CGroup: /system.slice/mysqld.service
├─57928 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/usr/local/mysql/data --pid-file=/usr/local/mysql/mysqld.pid
└─58167 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/mysql/dat服务器托管a --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-...
Apr 01 17:18:04 k8s-129 systemd[1]: Starting LSB: start and stop MySQL...
Apr 01 17:18:07 k8s-129 mysqld[57915]: Starting MySQL... SUCCESS!
Apr 01 17:18:07 k8s-129 systemd[1]: Started LSB: start and stop MySQL.
1、全量备份到/backup/full
xtrabackup --backup --target-dir=/backup/full --user=back --password=123456 --host=192.168.25.129 --port=3306
备份过后
把刚才id为1的数据修改保存
我后悔了要修改恢复回来
3、删除data mysql数据库目录
mv /usr/local/mysql/data /usr/local/mysql/data5
# 创建新的数据目录
mkdir /usr/loca服务器托管l/mysql/data/ # 创建新的数据目录以准备恢复
chown -R mysql:mysql /usr/local/mysql/data # 设置目录所有者为MySQL用户
#准备恢复操作
xtrabackup –prepare –apply-log-only –target-dir=/backup/full/
xtrabackup –prepare –target-dir=/backup/full/
# 复制备份数据到新的数据目录
xtrabackup –copy-back –target-dir=/backup/full/
这三步最后都出现即可
[Xtrabackup] completed OK!
# 设置新的数据目录的权限
chown -R mysql:mysql /usr/local/mysql/data/*
重新启动服务器
[root@k8s-129 mysql]# systemctl restart mysql
再看数据 恢复了
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接着 C语言 操作符详解（上）我们继续为大家分享C语言知识。 7. 关系操作符 关系操作符 > >= != 用于测试“不相等” == 用于测试“相等” 这些关系运算符比较简单，没什么可讲的，但是我们要注意一些运算符使用时候的陷阱。 警告： 在编程的…
