AnsweredAssumed Answered

passwordless ssh docs not working for mapr6

Question asked by reedv on Dec 1, 2017
Latest reply on Dec 4, 2017 by cathy

Trying to set up `clush` (for mapr-6.0) across nodes using the instructions provided by mapr, here. However, there is an step that asks to set up passwordless ssh for cross-node communication. To do this passwordless ssh, I used docs here. Doing this and logging into the node that clustershell is installed on and testing with command `$clush -a date`, I find that I get the error message:

 

mapr002: Host key verification failed.
clush: mapr002: exited with exit code 255
mapr003: Host key verification failed.
clush: mapr003: exited with exit code 255
mapr001: Host key verification failed.
mapr006: Host key verification failed.
clush: mapr001: exited with exit code 255
clush: mapr006: exited with exit code 255
mapr005: Host key verification failed.
clush: mapr005: exited with exit code 255
mapr004: Host key verification failed.
clush: mapr004: exited with exit code 255

 

Furthermore, the instructions for setting up passwordless ssh (as linked to earlier) do not seem to work, for when I try to ssh into them from any other node I am still required to enter the mapr user password:

 

[mapr@mapr001 ~]$ ssh mapr@mapr002
Password:

 

Does anyone have any ideas as to what is happening here? Is there a way to set up `clush` without having to deal with passwordless ssh?

Thanks.

Outcomes