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How to synchronise files between 2 Centos 5 Servers

Posted on 2011-02-22
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Last Modified: 2012-05-11
Say, I use the machine to store my data e.g. xls, word, txt and other files and wish to synchronise the directories to a 2nd server at a remote location. The specific data files are to stay in sinc with each other.
There is also a MYSQL DB that I would like to synchronise across the two machines.
What can you suggest please?
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Question by:shaunwingin
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jacw earned 250 total points
ID: 34950636
o you want a manual or background/automatic solution?  If manual, Beyond Compare 3 by Scooter Software daes a good job i.m.o. with very customisable comparison criteria.  The Pro version has SFTP support.
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by:shaunwingin
ID: 34950734
Automatic solution please .
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Assisted Solution

by:Ferrosti
Ferrosti earned 250 total points
ID: 34951343
The most comfortable way to go would be 'rsync'. Use it via cron and everything should be fine.
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Author Comment

by:shaunwingin
ID: 34951462
Please give me details and example on how to use. Will it give me a status report of sinc status?
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Expert Comment

by:Ferrosti
ID: 34952053
A good start would be this tutorial, including its footnotes with further links.
rsync howto
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Author Comment

by:shaunwingin
ID: 34958309
I've browsed it. Pls can you help with what file is recommended for a Centos5.5 installation and method of installation.

What specific instructions are needed to execute a rsynch over ssh between 2 servers. 1 directory called "a1" to be kept in sync between the two machines. serv1 and serv2 . How do I get the machines to login to each others rsynch service and keep it up to date? IP addresses are host names a1.dyndns.org a2.dyndns.org

Tx
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Expert Comment

by:Ferrosti
ID: 34968424
Your CentOS repository should contain 'rsync'. So you should be able to install it right away using the common CentOS software manager. I am not familiar with this one, so I cannot help you with installing using its installer.

I never give away a single fish if I can show you how to fish. This would end up in a mess as soon as there is something going wrong.
Therefor also have a look at this tutorial: rsync tutorial II
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Author Comment

by:shaunwingin
ID: 35099402
A Question, How can one protect against corruption of the data due to rsync?
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Expert Comment

by:Ferrosti
ID: 35200672
rsync uses checksums internally, so you should be on the safe side with it.
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Author Comment

by:shaunwingin
ID: 35325188
say I've setup a vpn now so essentially servers on a LAN. How do I rsynch a directory called a1 to be kept in synch on two CENTOS servers ip 192.168.10.57 and 192.168.10.58 ? Please give instructions.
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Author Comment

by:shaunwingin
ID: 35503816
I wish to apply points...
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Author Closing Comment

by:shaunwingin
ID: 35503819
Still need to test
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