Mirror connect to multiple hosts

[helmo]

Feature request:
I love the 'c' key to quickly connect to a host.

Sometimes there are a few commands that need to be executed on a number of hosts.

It would be really great to tag these hosts, and then mirror the input to these sessions.
Could that be done via the split option in screen?

A similar thing can be done with cssh, but that's gui only.

[liske]

Hi,

I don't think this could be implemented by screen's split command. It might be possible to use the stuff command to put input into multiple screen sessions in parallel... but it is not an mirroring at all.

Regards,
Thomas

[helmo]

Thanks for the quick reply.

This post relates to this topic:
http://stackoverflow.com/questions/6510673/in-screen-how-do-i-send-a-command-to-all-virtual-terminal-windows-within-a-sing

[liske]

apt-dater spawns a screen instance for each connection. Using the stuff command from outside screen (=from within apt-dater) should work to supply keyboard sequences into multiple screen instances.

[kiranos]

yea its seems in my thinking to be outside of apt-daters scope. install a package to a group of hosts I feel is what apt-dater can stop.

[helmo]

I understand @kiranos, it does smell like feature creep.

I'm open to suggestions though.

[kiranos]

@helmo I use terminator and broadcast in such cases:

"Not just that. You can group several splits into one group. Once you have grouped, you can broadcast a single command to all the splits in a group. “Type once and execute everywhere”. Awesome egh?"

[kallies]

Ansible might be the tool for this usecase. If it's for preparation of the update process it might be relevant for apt-dater. In that case i'd love to see the specific usecase.

[helmo]

For repeated tasks definitely Ansible (or any other cm tool), what I had in mind here is more for one-off things. Possibly a bit more error prone, allowing you to correct any mistakes on the fly.

[gratuxri]

I know, that this is really old issue, but nowadays apt-dater can use tmux and in tmux you have :set-window-option synchronize-panes on
to type same things on all panes

[nosilver4u]

Throwing another option out there for posterity, as I use dsh for this sort of thing. This allows me to setup groups for my servers and then execute a command for all servers or just for a particular group. Pretty handy!