SETTING UP RSYNC FOR FILE SYNCHRONISATION -Business Legions Blog

The first thing to do is check to see whether you have rsync installed on your VPS. Just type rsync. If it comes back with:

[root@test ~]# rsync
rsync version 3.0.6 protocol version 30
Copyright (C) 1996-2009 by Andrew Tridgell, Wayne Davison, and others.
Web site: http://rsync.samba.org/
Capabilities:
64-bit files, 64-bit inums, 64-bit timestamps, 64-bit long ints,
socketpairs, hardlinks, symlinks, IPv6, batchfiles, inplace,
append, ACLs, xattrs, iconv, symtimes

rsync comes with ABSOLUTELY NO WARRANTY. This is free software, and you
are welcome to redistribute it under certain conditions. See the GNU
General Public Licence for details.

Then you know rsync is installed. If it returns an invalid command then you know you need to install it. To install rsync just use the following command:

yum -y install rsync

1	yum -y install rsync

Generate the SSH key gen for a password-less login

ssh-keygen -t rsa

1	ssh-keygen -t rsa

Rsync SSH Keygen

Accept all default settings

Copy the ssh keys to the remote server

ssh-copy-id user@x.x.x.x

1	ssh-copy-id user@x.x.x.x

or paste the keys in ssh:

cat .ssh/id_rsa.pub | ssh root@x.x.x.x 'cat >> .ssh/authorized_keys'

1	cat .ssh/id_rsa.pub \| ssh root@x.x.x.x 'cat >> .ssh/authorized_keys'

Then run the rsync to synchronise the files. It’s always from source to destination so the below command needs to run from the server that you have the files you wish to copy.

rsync -avuzr --update --delete --rsync-path=/usr/bin/rsync /web/backups/ root@xxx:/web/backups

1	rsync -avuzr --update --delete --rsync-path=/usr/bin/rsync /web/backups/ root@xxx:/web/backups

If you encounter the following error message when you run RSYNC then proceed reading to see the solution:

bash: /usr/bin/rsync: No such file or directory
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: remote command not found (code 127) at io.c(600) [sender=3.0.6]

The fix was to install rsync on the remote server. You may have read in a few articles that rsync is not required on the remote server but in my case it was needed. It was the only way to fix the problem.

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