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how to sync two mysql databases?
Hello everyone,
I have a small problem ahead of me. I run a hosting company and am going to start offering syncing services to my clients. I am going to use DNS failover to monitor the main server and if that should go down, kick it over to the secondary server for minimal downtime.
I will also be using rsync to update the necessary files to the second server.
My question is, how would I go about setting something up that would automatically sync the necessary mysql databases?
Here's how it would work right now:
1. I would modify the necessary config file for the rsync script to include the customers who paid for the service. It will only sync those accounts. These accounts are located in /home/acctname
2. The mysql dbs are located at /var/lib/mysql folder (you probably knew that), so, I could use rsync to just copy them over, but the hardest part is to actually apply the updates to the databases on the second server. How can I go about doing this?
Thanks for any help!
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Thanks for the link. I'll check it out.
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synchronization and replication
Have a look at the program SQLyog at www.webyog.com.
Also read this:
http://www.webyog.com/faq/10_60_en.html
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Hey
It appears that you want a failover feature.
MySQL offers:
Replication: setup two hosts (1 master & 1 slave). All data is written to the master and the slave replicates the data. Now if the master fails, the slave does NOT take over, but you do have a copy of all your data unharmed.
(You could create a few simple shell scripts where if the IP of the master fails, have the slave change IP address...)
http://dev.mysql.com/doc/refman/5.0/en/replication.html
Clustering: setup 3 or more hosts (1 server to manage the cluster, 1 master and 1 node). All data is written to the master then to the slave. If the master fails then the node automatically takes over.
http://dev.mysql.com/doc/refman/5.0/en/ndbcluster.html
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