Racing were reduced to 14 men after 5 minutes of play when Antoine Batut received a red card from referee Wayne Barnes.
Murray, Zebo and Sherry scored a try each in the opening half and Ian Keatley added one conversion while Gaetan Germain added two penalties for Racing to give a half-time score of 17-6.
Simon Zebo added the all important fourth try 7 minutes into the second half and sealed the afternoon off with his third and Munster's fifth try minutes later.
Munster 29 Racing Metro 6
Munster: F Jones; D Howlett capt, K Earls, J Downey, S Zebo; Ian Keatley, C Murray; D Kilcoyne, M Sherry, BJ Botha; D O'Callaghan, D Ryan; P O'Mahony, T O'Donnell, J Coughlan. Replacements: D Varley, W du Preez, J Ryan, B Holland, P Butler, D Williams, JJ Hanrahan, C Laulala.