Replication to more than one replica?
Per olof Ljungmark
peo at intersonic.se
Fri Aug 10 04:55:31 EDT 2007
Rob Mueller wrote:
>> Disagree. I am replicating one server to two and have been doing it
>> for quite
>> a while with cyrus 2.3.
> Can you explain how you're doing this? If you're just running multiple
> sync_clients with different config files that point to different replica
> servers, then what you've got is broken because each sync_client will be
> randomly grabbing different log files, so each replica will be only
> getting half the required updates and will at any moment be randomly out
> of sync with the master.
> The only way you can reliably make this work is.
> 1. Write a process that that like sync_client, regularly grabs and
> atomically rotates the log files in the conf/log directory
> 2. That process then either:
> a) puts two copies of the log file in separate directories, and you have
> two separate sync_client processes running in rolling mode picking up
> the files in those directories, each sync_client with a different config
> file pointing to the two different replica servers
> b) it runs a sync_client -f on the file twice, but with separate config
> filess to each of the two different replica servers
Could you do it then with sync_client -S -u instead of -r to one of the
More information about the Info-cyrus