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spine: a backend data gatherer for cacti
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This code represents high speed poller replacement for cmd.php.
It has come quite a ways from it's initial development. It is almost
100% compatible with the legacy cmd.php processor and provides much
more flexibility than cmd.php.
Make sure that you have a good development environment setup to compile spine.
This includes compilers, header files and things such as libtool. If you have
questions, use the forums.
KNOWN Issues:
1) On Windows, Microsoft does not support a TCP Socket send timeout. Therefore,
if you are using TCP ping on Windows, spine will not perform a second or subsequent
retries to connect and the host will be assumed down on the first failure.
If this presents a problem for you, I suggest using another Availability/Reachability
method, or moving to Linux/UNIX.
2) Spine takes quite a few MySQL connections. The number of connections is calculated
as follows:
a) main poller take one connection
b) all threads take one connection each
c) all script servers take one connection each
Therefore, if you have 4 processes, with 10 threads each, and 5 script servers each
your spine will take approximately:
total connections = 4 * ( 1 + 10 + 5 ) = 64
This may be resolved in a future release of spine.
-Larry Adams (aka TheWitness)
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