The manual states that when using balance source:

"The source IP address is hashed and divided by the total
weight of the running servers to designate which server will
receive the request. This ensures that the same client IP
address will always reach the same server as long as no
server goes down or up. If the hash result changes due to the
number of running servers changing, many clients will be
directed to a different server. This algorithm is generally
used in TCP mode where no cookie may be inserted. It may also
be used on the Internet to provide a best-effort stickyness
to clients which refuse session cookies. This algorithm is
static, which means that changing a server's weight on the
fly will have no effect."


Does this mean that if say 1 server out of a cluster of 5 servers
fails, then it is likely
that the hash result changes and lots of the clients could potentially
loose their session? (i..e hit the wrong server because the hash has
changed)




--
Regards,

Malcolm Turnbull.

Loadbalancer.org Ltd.
Phone: +44 (0)870 443 8779
http://www.loadbalancer.org/

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