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I need to setup a "mirroring" system for our main web server (a secondary server that mirrors the main server). In theory I see no problems. Use rsync for /var/www/vhosts and multimaster replication for MySQL, very straightforward.
But... when factoring in Plesk the situation comes more complex (?).
1- Does anyone have idea what happens to Plesk with multimaster replication ("psa" db...)?
2- Since the "psa" database is stored on the same database server that will be replicated, what happens to the 2ndary server i.e. does Plesk play nicely if the "psa" database is replicated to 2nd server?
3- What about licensing? Does the Plesk license have something in the "psa" database as well which would then screw up licensing on the 2ndary server?
I am sure there are many people here using similar system in a load-balancing scenario, no? Any problems with Plesk? Note that shared storage such as iSCSI and separate DB server are not feasible at the moment due to budget constraints.. The mirroring does not need to be real-time like in load-balancing so I choose to go with rsync "often enough".
-V
But... when factoring in Plesk the situation comes more complex (?).
1- Does anyone have idea what happens to Plesk with multimaster replication ("psa" db...)?
2- Since the "psa" database is stored on the same database server that will be replicated, what happens to the 2ndary server i.e. does Plesk play nicely if the "psa" database is replicated to 2nd server?
3- What about licensing? Does the Plesk license have something in the "psa" database as well which would then screw up licensing on the 2ndary server?
I am sure there are many people here using similar system in a load-balancing scenario, no? Any problems with Plesk? Note that shared storage such as iSCSI and separate DB server are not feasible at the moment due to budget constraints.. The mirroring does not need to be real-time like in load-balancing so I choose to go with rsync "often enough".
-V