Thursday, July 28, 2005
MySQL, PHP sessions and multiple machines
Following on from our previous experiments, we realised that
the problem with running a web-based service (such as the Horde webmail client) across multiple servers
is maintaining session information between the machines.
PHP's default session
handling functions make use of flat files stored on a local disk. PHP,
however, provides a
way to over-ride this with user-defined functions. In other words it's
possible to plug your own session handling routines into PHP's session
handler.
See more ...
posted by guy at: 08:56 SAST |
path: /systems |
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TLS/SSL certificates and multiple A records
We're in the process of migrating from our current server-oriented approach
of handling services to a more generic services-based approach. The idea is
instead of dedicating one machine to running a particular service, we'll
dedicate a cluster of identical machines to running all services. One of
the services that's earmarked to move is our outgoing mail server. As we
allow users to establish a TLS/SSL connection to this server, we had some
concerns about how to handle TLS/SSL certificates on our cluster. Do we
need one certificate for the whole cluster or does each machine need a
certificate?
See more ...
posted by guy at: 08:32 SAST |
path: /systems |
permanent link
