Comment 2 for bug 1267494
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| Raghavendra D Prabhu (raghavendra-prabhu) wrote | #2 |
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a60fb26
(Get the code!)
@Seppo,
"we can assume that all 5.5 nodes will be upgraded first to use
Galera replication 3.*,"
Is this (Galera 3 with 5.5 beforehand) a requirement for 5.5 to 5.6 replication with PA enabled? (or even with PA disabled)
This is because, if it is indeed a requirement, then before cluster upgrade
(to 56), all the -55 nodes will need to be upgraded to galera-3 first, and
to do this in rolling fashion, galera-3 needs to be started with
socket.checksum=1 (otherwise galera incompatibility fails replication).
Now, after all the upgrade, the nodes will probably need a restart with socket.checksum=1 removed (if they want to take advantage of galera-3's checksumming and since socket.checksum is not dynamic).