Percona5.7 TokuBackup支持TokuDB热备份

Percona5.7 TokuBackup支持TokuDB热备份

一、安装tokudb引擎

执行以下脚本，自动安装tokudb。

# bin/ps-admin --defaults-file=/etc/my3308.cnf --enable -uroot -p123456 -S /tmp/mysql3308.sockChecking SELinux status...INFO: SELinux is disabled.Checking if TokuDB plugin is available for installation ...INFO: ha_tokudb.so library for TokuDB found at /usr/local/Percona/lib/mysql/plugin/ha_tokudb.so.Checking location of jemalloc library ...INFO: jemalloc library needed for TokuDB found at /usr/local/Percona/lib/mysql/libjemalloc.so.1Checking if Percona Server is running with jemalloc enabled...INFO: Percona Server is running with jemalloc enabled.Checking transparent huge pages status on the system...INFO: Transparent huge pages are currently disabled on the system.Checking if thp-setting=never option is already set in config file...INFO: Option thp-setting=never is not set in the config file.      (needed only if THP is not disabled permanently on the system)Checking TokuDB engine plugin status...INFO: TokuDB engine plugin is installed.Adding thp-setting=never option into /etc/my3308.cnfINFO: Successfully added thp-setting=never option into /etc/my3308.cnf

二、增加mysqld_safe启动参数preload-hotbackup至my.cnf配置文件里

# bin/ps_tokudb_admin --defaults-file=/etc/my3308.cnf --enable-backup -uroot -p123456 -S /tmp/mysql3308.sockWARNING: This script is deprecated and will be removed in 8.0. You can use ps-admin script which has more functionality.Checking SELinux status...INFO: SELinux is disabled.Checking if Percona Server is running with jemalloc enabled...INFO: Percona Server is running with jemalloc enabled.Checking transparent huge pages status on the system...INFO: Transparent huge pages are currently disabled on the system.Checking if thp-setting=never option is already set in config file...INFO: Option thp-setting=never is set in the config file.Checking if preload-hotbackup option is already set in config file...INFO: Option preload-hotbackup is not set in the config file.Checking TokuDB engine plugin status...INFO: TokuDB engine plugin is installed.Checking TokuBackup plugin status...INFO: TokuBackup plugin is not installed.Adding preload-hotbackup option into /etc/my3308.cnfINFO: Successfully added preload-hotbackup option into /etc/my3308.cnfPLEASE RESTART MYSQL SERVICE AND RUN THIS SCRIPT AGAIN TO FINISH INSTALLATION!

三、重启mysqld服务

/etc/init.d/mysql restart

四、安装热备份TokuBackup plugin工具插件

# bin/ps_tokudb_admin --defaults-file=/etc/my3308.cnf --enable-backup -uroot -p123456 -S /tmp/mysql3308.sockWARNING: This script is deprecated and will be removed in 8.0. You can use ps-admin script which has more functionality.Checking SELinux status...INFO: SELinux is disabled.Checking if Percona Server is running with jemalloc enabled...INFO: Percona Server is running with jemalloc enabled.Checking transparent huge pages status on the system...INFO: Transparent huge pages are currently disabled on the system.Checking if thp-setting=never option is already set in config file...INFO: Option thp-setting=never is set in the config file.Checking if preload-hotbackup option is already set in config file...INFO: Option preload-hotbackup is set in the config file.Checking TokuDB engine plugin status...INFO: TokuDB engine plugin is installed.Checking TokuBackup plugin status...INFO: TokuBackup plugin is not installed.Checking if Percona Server is running with libHotBackup.so preloaded...INFO: Percona Server is running with libHotBackup.so preloaded.Installing TokuBackup plugin...INFO: Successfully installed TokuBackup plugin.

五、开始全量热备份

执行下面的命令即可开启热备份：

MySQL [(none)]> set tokudb_backup_dir='/data/tokudb_bak/';Query OK, 0 rows affected (0.408 sec)

注：创建一个空目录/data/tokudb_bak，并将其属性改成mysql

注意事项：

1、关闭异步IO，否则备份失败。

innodb_use_native_aio = 0

2、不支持增量备份

六、恢复

直接拷贝备份文件至你的数据目录下，启动mysqld进程即可。