Rrdtool PHP notes

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Specific Notes for working on NMS project

DEFAULT_FORMAT = '%5.2lf%s'
DEFAULT_LEGEND = '${graphPoint/id}'
DEFAULT_MULTIGRAPH_LEGEND = '${here/name | here/id} ${graphPoint/id}'

Thresholds against values are using array_reverse($color) for the index value of the normal key of the DS
Initial version will shell exec the rrdtool directly. Seems easier for a V1 dealing with RRD when it is grouchy
ANY create / update / graph commands that fail MUST log the exact command used.

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