Troubleshooting issues with nodeattribute expressions

An attribute expression will contain some directives wrapped in {} characters.

When using nodeattrib substitution there might be the temptation to do substitution of username and passwords which will not work.

Example¶

when using noderun attribute expressions for bmcuser and bmcpass will not work, this is expected behavior.

noderun <nodename> ipmitool -I lanplus -U "{bmcuser}" -P {bmcpass} -H {bmc}

Password:
n1052: Error: Unable to establish IPMI v2 / RMCP+ session

The inability to use attribute expressions for passwords is expected behavior for security reasons. Allowing this functionality would allow passwords and username to be echoed in plain text