Synchronous backup file configuration method with Rsync in Linux

Linux rsync sync settings

Rsync is a data mirroring backup tool that keeps data synchronized between two servers, and the most frequently used scenario is backing up the data.
The installation method is as follows:

Installation

Installing rsync under Ubuntu can be achieved by following these steps:

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$ sudo apt-get install rsync xinetd

Configuration
1. Edit/etc/default/rsync start rsync as daemon for using xinetd

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$ sudo vim/etc/default/rsync Rsync_enable=inetd

2. Create/etc/xinetd.d/rsync make rsync work through xinetd

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$ sudo Vim/etc/xinetd.d/rsync   Service rsync     {          disable         = no         socket_type     = Stream         wait             = no         user             = root          server          =/usr/bin/rsync          server_args     =--daemon         log_on_failure  + = USERID    }

3. Create/etc/rsyncd.conf configuration rsync to make it in.

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$ sudo vim/etc/rsyncd.conf Max connections = 2 Log file =/var/log/rsync.log Timeout = 300 [Share] Comment = Public Share Path =/home/share Read Only = no List = yes UID = nobody GID = Nogroup Auth users = user Secrets file =/etc/rsyncd.secrets

4. Create/etc/rsyncd.secrets configuration username and password.

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$ sudo vim/etc/rsyncd.secrets User:password

4.a

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$ sudo chmod 600/etc/rsyncd.secrets

5. Start/Restart XINETD

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$ sudo/etc/init.d/xinetd Restart

Test

Run the following command check to confirm that the rsync configuration was successful.

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$ sudo rsync user@192.168.0.1::share Password: Drwxr-xr-x 4096 2006/12/13 09:41:59. Drwxr-xr-x 4096 2006/11/23 18:00:03 folders

if it doesn't work out, take a few notes:

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/etc/rsyncd.conf: Auth users = user

The user at the back is authorized to access the module and needs to correspond to the/etc/rsyncd.secrets.
Remote sync:

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sudo rsync-arlhptgzqh--delete--delay-updates--progress fhp@serverip::share--password-file=/etc/rsync_password/ Media/server/server1/home /etc/rsync_password

You just need to fill in the code.

Unfortunately, rsync synchronization does not automatically detect whether a directory has file updates or changes, and then synchronizes, and requires that we synchronize in the system's scheduled tasks.