How would one create new tmux servers, each isolated in a separate slice (so that if systemd-oomd kills one, the other tmux servers keep living)

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Edit:

The simplest way to do this is to modify the default-command variable tmux provides. So in the tmux config file (~/.tmux.config?):

# in tmux.conf
set-option -g default-command 'systemd-run --user --scope bash'

Older solution (round about, not needed)

I’m not sure tbh.

For the time being, I dug in a little more and realised I could run each tmux “window” in isolation. To create a new window in tmux one goes :new-window <command>. So, one can use:

:new-window  systemd-run --user --scope bash

And one can override the default bindings so that new windows are created like this:

# in .tmux.conf

bind-key c new-window systemd-run --user --scope bash

So, there’s only the one tmux server, but each window is isolated. Testing out the oom killer by running tail /dev/zero in one tmux window caused it to be killed, but did not affect other tmux windows or sessions, or the server.

So, i think this is perhaps the “cleanest” way to go about it.

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