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Configuration management tools: This is roughly the situation we have now. Several different CM systems have been developed over the years, with new ones coming along all the time, but only a few have achieved significant market share. At the time of writing, at least for UNIX-like systems, these CM systems are Puppet, Chef, and CFEngine. There really isn't much to choose between these different systems. They all solve more or less the same problems --the ones we saw earlier in this chapter-- in more or less the same way. Some people prefer the Puppet way of doing things; some people are more comfortable with Chef, and so on. But essentially, these, and many other CM systems, are all great solutions to the CM problem, and it's not very important which one you choose as long as you choose one.
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