clickhouse 备份

此命令是在clickhouse 22.7.5版本下执行：

官方文档见：https://clickhouse.com/docs/en/operations/backup#command-summary

参考文档： https://blog.csdn.net/lusklusklusk/article/details/139781360

创建备份目录

mkdir /backups/

修改权限：
chmod 766 /backups/log

sudo chown -R clickhouse:clickhouse /backups/

修改配置：

vim /etc/clickhouse-server/config.d/backup_disk.xml

添加如下记录：

<clickhouse>
    <storage_configuration>
        <disks>
            <backups>
                <type>local</type>
                <path>/backups/</path>
            </backups>
        </disks>
    </storage_configuration>
    <backups>
        <allowed_disk>backups</allowed_disk>
        <allowed_path>/backups/</allowed_path>
    </backups>
</clickhouse>

重启生效：

systemctl restart clickhouse-server

进入client命令行：

clickhouse-client -m --user default --password xxxxxxxxxxx

查询配置：

select name,path,type from system.disks;

执行备份：
BACKUP TABLE ehrds.SYS_ESB_LOG to Disk('backups','logs/');

其他备份方式：

https://www.cnblogs.com/hxlasky/p/15801939.html

https://bbs.huaweicloud.com/blogs/389117