THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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The netbeans-vm.apache.org hosts different web servers. Some of them (bits.netbeans.org, for instance) are configured using puppet. Some others (NetCAT stuff, for instance) are manually set up.
The virtual webservers are configured using puppet using https://github.com/apache/infrastructure-puppet/blob/deployment/data/nodes/netbeans-vm.apache.org.yaml