Real time file sync between two web servers

[Albertwu]

Hello

I have two linux servers running with CentOS + Nginx (X and Y) serving a large website that handles simple HTML files (between 30kb and 100kb each file), I'm using a hardware load balancer in front of both nodes. The website admin usually uploads about 100 new HTML files per day on different directories, for example:

ar/www/website.com/file.html

ar/www/website.com/directory1/otherfile.html

ar/www/website.com/directory2/anotherdir/file2.html

The question is:

How can I keep the main website (

ar/www/website.com/) and all the file and new subdirectories synchronized in real time between the two servers?

I used to have rsync with a cron each minute (* * * * rsync -avpr....) to but now I need real time replication, so that doesn't work for me anymore.

Any ideas?

Thanks

PS: just in case, I am using fast SSD disks, and 1GBit private and public network connections.

 

[wdc]

https://github.com/axkibe/lsyncd
https://www.cis.upenn.edu/~bcpierce/unison/

Or you can also setup more frequent cron, just google: how to cron every second (you may need to verify rsync are not overlapping somehow)

Another way is to use common storage and join this storage to both servers and modify only that storage. Maybe Google: NFS, SSHFS . But im not sure about stability of such a tunnel across the internet.