How to configure parallel remote kernels in Mathematica?

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When I try to configure remote kernels in mathematica via Evaluation>Parallel Kernel Configuration ... then I go to "Remote Kernels" and add hosts. After that I try to Launch the remote kernels and only some of them get launched (the number of them varies). And I get a msg like the following.

KernelObject::rdead: Subkernel connected through remote[nodo2] appears dead. >> LinkConnect::linkc: Unable to connect to LinkObject[36154@192.168.1.104,49648@192.168.1.104,38,12]. >> General::stop: Further output of LinkConnect::linkc will be suppressed during this calculation. >>

Any ideas how to get this working?

Take into account it sometimes does load some of the remote kernels but never all of them. Thanks in advance.


This is my ouput for $ConfiguredKernels // InputForm

{SubKernels`LocalKernels`LocalMachine[4], 
 SubKernels`RemoteKernels`RemoteMachine["nodo2", 2], 
 SubKernels`RemoteKernels`RemoteMachine["nodo1", 2], 
 SubKernels`RemoteKernels`RemoteMachine["nodo3", 2], 
 SubKernels`RemoteKernels`RemoteMachine["nodo4", 2], 
 SubKernels`RemoteKernels`RemoteMachine["nodo5", 2]}

Once it did load all of the kernels, but it commonly doesn't, just one or two remote kernels.

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