Python 2.7.8 (default, Nov 28 2016, 12:34:20) [GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux2 Type "help", "copyright", "credits" or "license" for more information.
import rrdtool Traceback (most recent call last): File "", line 1, in ImportError: /usr/lib64/libcairo.so.2: undefined symbol: pixman_region32_rectangles
According to http://www.pixman.org/ , pixman is a library used by cairo, and pixman_region32_rectangles must be a symbol in it.
So, the error means that the versions of cairo and pixman on your system are incompatible. You need to update either of them to correspond to the other (or just both to the latest version).
