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We have two servers; both are running plesk on CentOS 5.
Server sA is new and we have just migrated all the hosting and mail to that one. Server sB is the old one.
We want to be able to use sB as backup for sA incase for whatever reason a problem arises with sA.
I already know that we can have a mail backup using qmail with smptroutes and morercpthosts on server B.
The main issues we are unsure of are:
1. How best to set up DNS so that B hosting is only in use when A is down?
2. The best way to keep data on B is as uptodate as possible and how often should we update it?
3. Is there a way we might be able to keep plesk control panel on B without having to pay for two licenses?
For item 2 I am looking into linux-ha and I think it would be reasonable to update once a day in the early hours of the morning.
Any input would be much appreciated, thanks.
Server sA is new and we have just migrated all the hosting and mail to that one. Server sB is the old one.
We want to be able to use sB as backup for sA incase for whatever reason a problem arises with sA.
I already know that we can have a mail backup using qmail with smptroutes and morercpthosts on server B.
The main issues we are unsure of are:
1. How best to set up DNS so that B hosting is only in use when A is down?
2. The best way to keep data on B is as uptodate as possible and how often should we update it?
3. Is there a way we might be able to keep plesk control panel on B without having to pay for two licenses?
For item 2 I am looking into linux-ha and I think it would be reasonable to update once a day in the early hours of the morning.
Any input would be much appreciated, thanks.
