search for: vhosts_count

Hi, Timo Sirainen wrote (May 19, 2010 1:50:34 am) : "When a connection from a newly seen user arrives, it gets assigned to a mail server according to a function: host = vhosts[ md5(username) mod vhosts_count ]" This hash function is it still used as it is without modification ? My another question sounds pretty innocent but I have doubts about vhosts_count. Taking two directors with three backend Dovecot as an example, the number of (v)hosts assigned for each host is "100" (default va...

An idea I just had: Director basically works by assigning the backend IP address by: ip = vhosts[ md5(username) mod vhosts_count ].ip The rest of director is about what happens when vhosts[] or vhosts_count changes. What about instead doing this on IP address level? ip = ip_pool[ md5(username) mod ip_pool_size ] When a backend dies, you'll reassign the backend's IPs to other backends. Each backend should have man...

...one or more Dovecot proxies, which internally then figure out where the user should go. So the proxies act kind of like a secondary load balancer layer. When a connection from a newly seen user arrives, it gets assigned to a mail server according to a function: host = vhosts[ md5(username) mod vhosts_count ] This way all of the proxies assign the same user to the same host without having to talk to each others. The vhosts[] is basically an array of hosts, except each host is initially listed there 100 times (vhost count=100). This vhost count can then be increased or decreased as necessary to change...