Net::OpenSSH::Parallel Options

rgren925 has asked for the wisdom of the Perl Monks concerning the following question:

I have written some code using Net::OpenSSH and am now trying to use Net::OpenSSH::Parallel to more easily set up ssh sessions (for issuing commands and sending files) to many servers concurrently. I started down the path of using Parallel::ForkManager to do the Net::OpenSSH sessions but that was pretty cumbersome. Net::OpenSSH::Parallel is working perfectly but for one thing:

Net::OpenSSH has some options to eliminate stuff like login banners--using master_stderr_discard and master_stdout_discard--and I want to use them with the parallel version. They don't work directly (i.e., they generate an error when I try to use them with Net::OpenSSH::Parallel). I'm hoping that, since it is based on Net::OpenSSH, there may be a way to set them in Net::OpenSSH::Parallel.

Is that do-able and, if not, any recommendations?

Thanks very much. Rick.

Comment on Net::OpenSSH::Parallel Options

Replies are listed 'Best First'.
Re: Net::OpenSSH::Parallel Options by atcroft (Abbot) on Mar 25, 2022 at 22:08 UTC
Are you trying to add them in the Net::OpenSSH::Parallel constructor (my $pssh = Net::OpenSSH::Parallel->new()) call? If so, take a look at the section on the 'add_host' method--specifically, it says, "[A]ny additional option will be passed verbatim to the Net::OpenSSH constructor later." So I suspect the following MIGHT work (UNTESTED): `my $pssh = Net::OpenSSH::Parallel->new(); $pssh->add_host($_, master_stderr_discard => 1, master_stdout_discard => 1, ) for @hosts;` [download] Hope that helps.	[reply] [d/l]
Re^2: Net::OpenSSH::Parallel Options by rgren925 (Beadle) on Mar 25, 2022 at 22:40 UTC
Wow! Thank you SO much! Don't know how I missed that. I guess that, since the options are passed on the constructor to Net::OpenSSH, I assumed (always a bad idea) that it would be the same here. It works great!	[reply]
Re: Net::OpenSSH::Parallel Options by etj (Chaplain) on Apr 04, 2022 at 14:06 UTC
In the spirit of using the best tool for the job, have you considered using Ansible for this task?	[reply]
Re^2: Net::OpenSSH::Parallel Options by hippo (Bishop) on Apr 04, 2022 at 14:22 UTC
I'm not convinced that Ansible is ready for production use yet. The best tool for the job might be Rex, however. 🦛	[reply]
Re^3: Net::OpenSSH::Parallel Options by Fletch (Bishop) on Apr 04, 2022 at 15:36 UTC
I think they're referring to ansible which is a rather widely used configuration management product (supported by RedHat), not a random CPAN module that happens to have the same name . . . Edit: community version docs. The cake is a lie. The cake is a lie. The cake is a lie.	[reply]
Re^3: Net::OpenSSH::Parallel Options by eyepopslikeamosquito (Archbishop) on Apr 04, 2022 at 21:29 UTC
See also: Re: "Magic tools" that take the fun away (Build/DevOps/Rex References) (especially the "Rex References" section)	[reply]
Re^3: Net::OpenSSH::Parallel Options by etj (Chaplain) on Apr 04, 2022 at 14:33 UTC
Is that the FUD it looks like?	[reply]
Re^4: Net::OpenSSH::Parallel Options by hv (Prior) on Apr 04, 2022 at 15:40 UTC
Re^5: Net::OpenSSH::Parallel Options by etj (Chaplain) on Apr 05, 2022 at 13:41 UTC


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