Parallel Distributed Shell (pdsh), Parallel Distributed Copy (pdcp)
and the commands based on these utilities (cexec, ccp, ckill, cuptime, cps)
display misleading error messages when the security environment is not properly
configured. For example, if non-interactive ssh is not properly configured,
pdsh and pdcp display error messages such as the following:
pdsh@source_node:target_node:Failed to
initiate RCP protocol
pdsh@source_node:target_node:ssh exited
with exit code 255
This indicates that pdsh was unable to establish an ssh connection with
the remote node. For additional troubleshooting information, refer to Managing
Systems and Workgroups, Chapter 3, Configuring a System.
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