I've been reading up on using rsync to synchronize KMS on LINUX from the active node to a passive node. From users' reviews, there are a lot of implementation methods to be done. While considering using rsync to transfer all the files and emails to a secondary server (standby server if primary server fails), I would like to ask your opinions as below :
1. Considering these 2 methods, (a) by running rsync on a schedule. All backup and transfer are set on a schedule and let it runs automatically. (b) by running rsync constantly pull all the last modified data from the active server to a passive server.
Which is the better solution? What are the pros and cons on both methods?
2. What are the impacts to the mailserver and network if either these 2 methods are implemented on the environment?
3. Let's say that I'm running a schedule rsync for every 30 mins. Then server fails between that 30 mins schedule interval. We could've lost hundreds or thousands of emails on the passive server before that upcoming schedule. How do you guys overcome this situation? Any secondary backing up methods?
4. Let's say that I'm running a schedule rsync for every 30 mins. What if file transferring exceed the 30 mins scheduling, will the rsync continues until the end of process and skipped the current schdule session? Or it will break the current session and runs a new schedule session?
5. We understand that mailserver.cfg and user.cfg configuration files are constantly being modified or opened for some reasons. During rsync, will there be a risk when copying these settings without corrupting its integrity?
Kindly help me out on this. Thx...
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