Re: [PLUG] ClusterSSH & friends

["Claude M. Schrader" <plug@claudeschrader.com>]

I also use clusterssh regularily. I find it very helpful, especially the
ability to exclude a host from commands after connecting to it.

Mark,
have you figured out how to run clusterssh from a remote machine using X
forwarding? I tried it on my OSX laptop, but the xterms weren't opening
for me.
Thanks,
Claude

On 12:20 Wed 10 Aug     , bergman@merctech.com wrote:
> In the message dated: Wed, 10 Aug 2011 01:35:27 EDT,
> The pithy ruminations from JP Vossen on 
> <[PLUG] ClusterSSH & friends> were:
> => Last night at PLUG N we were talking about running the same command on a 
> => bunch of servers.  Here is some follow-up for that.
> => 
> 
> I use clusterssh on a daily basis. Prior to that I've used clusterm[1]
> and the Solaris Cluster Server "cssh" package[2] when I admin'ed Solaris
> and Veritas clusters.
> 
> 
> Some Linux terminal emulators (roxterm? konsole?) have a "multiplexing" option
> that allows you to send output from one terminal to multiple terminals, but
> they don't natively integrate the ssh parts.
> 
> I've hacked^H^H^H^H^H^H written a front-end script to the ClusterSSH "cssh"
> command to enable loops over specified hosts, rather than starting interactive
> sessions.
> 
> That front-end wrapper solves most of my complaints with clusterssh,
> the only remaining issues are the hard-coded dependency on xterm as
> the terminal emulator, rather than allowing a user-specified program,
> and a minor bug that causes the Nth terminal window to be opened with
> a smaller size than the others.
> 
> 
> 	[SNIP!]
> 
> => 
> => Then there is "Execute commands simultaneously on multiple servers Using 
> => PSSH/Cluster SSH/Multixterm" [2] and "Parallel SSH execution and a 
> => single shell to control them all" [3].
> 
> Yeah, I tried pssh for a while...I don't recall why I prefered clusterssh.
> 
> I actually like clusterm a lot, but it doesn't play well with recent versions
> of perl.
> 
> There's a recent round-up of parallel ssh tools here:
> 
> 	http://blog.crdlo.com/2010/07/parallel-ssh-tool-roundup.html
> => 
> => And of course, CFEngine [4], Puppet [5] and chef [6] and a comparison of 
> 
> I use cfengine as well. It's slightly related to the ssh tools, but
> only in the general sense of system management...there's a good case
> for having both types of tools in any sufficiently complex environment.
> 
> In general, I use cssh to do "interactive" tasks on multiple servers in sync,
> where those servers are not managed by cfengine. The cfengine boxes (19 at
> present, soon to be ~90) don't get any interactive changes or management--the
> changes are all applied to the cfengine server. I'll login to the cfengine
> managed boxes only to make sure that the changes were applied as
> intended...you really, really, really don't want to mix administration through
> a config management system and interactive (manual) management.
> 
> => If anyone (Kevin?) dives into these, let us know how it works out.
> 
> I'd be glad to give more info about clusterm if anyone's interested.
> 
> Thanks,
> 
> Mark
> 
> 
> [1] http://download.oracle.com/docs/cd/E18728_01/html/821-2679/cssh-1m.html#scrolltoc
> 
> 	it makes me feel icky to link to "oracle.com" when referencing
> 	something from Solaris
> 
> [2] http://sourceforge.net/projects/clusterm/
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-- 
Claude M. Schrader, CCNA
http://blog.claudeschrader.com/
http://www.linkedin.com/in/claudeschrader
___________________________________________________________________________
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