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redundant memcached's for php sessions


I'm trying to run memcached in a redundant fashion. I installed the
php5-memcache module and installed memcached on two different hosts.
It all works pretty well as long as both memcached's stay up and
running. If I shut down one, I'm getting segfaults on the server on
pages that start sessions.

[Thu May 31 01:31:43 2012] [notice] child pid 11941 exit signal
Segmentation fault (11)

I'm using this configuration as php memcache configuration:


... which logically should write all session data to two nodes and
fail over between memcache nodes (ie, read from the second node if the
first goes down). I can't pinpoint why I'm getting crashes instead of

Frank Van Damme
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