[Bro] Going from standalone to Bro cluster error

[Eric Hacecky]

I'm in the process of converting my Bro installs from standalone instances to a Bro Cluster.

The previous standalone Bro instance/server I'm using for testing is not able to be updated by the manager when I list it as a worker node.

I have the following 3 machines:

manager - New Bro install.  version 2.5-beta-79  (rhel7 python 2.7.5)
worker1 - New Bro install.  version 2.5-beta-79  (rhel7 python 2.7.5)
worker2 - Previous standalone Bro instance.  version 2.4  <---- Notice the version differs, does worker2 need to run the same version as the manager?  (rhel6 python 2.6.6)

Everything works between manager and worker1.

Here is the output from broctl when worker2 is listed in node.cfg.

//
[BroControl] > check
manager scripts are ok.
proxy-1 scripts are ok.
worker-1 scripts are ok.
worker-2 scripts are ok.

[BroControl] > install
removing old policies in /usr/local/bro/spool/installed-scripts-do-not-touch/site ...
removing old policies in /usr/local/bro/spool/installed-scripts-do-not-touch/auto ...
creating policy directories ...
installing site policies ...
generating cluster-layout.bro ...
generating local-networks.bro ...
generating broctl-config.bro ...
generating broctl-config.sh ...
updating nodes ...
sh: line 1: /bin/python: No such file or directory
sh: line 2: [/bin/echo,: No such file or directory
sh: line 3: syntax error near unexpected token `done'
sh: line 3: `done'
Error: cannot create a directory on node worker-2
Error: Failed to establish ssh connection to host <redacted IP for worker2>
//

ssh keys are working as intended.  Even though the error says, "failed to establish ssh connection on host" I can see manager login on worker2 as the root user via ssh in secure log.

/bin/python is 2.6.6 and is in root's path.  Everything in question is owned by root.

Any ideas?

Thanks,
Eric