Reusing ssh connections
2020-02-05 - How to speed up opening multiple ssh to a single host
It is possible to share multiple sessions over a single connection. One of the advantages is that for the duration of the connection, all new sessions open very fast.
You need a directory to store the sockets for the opened sessions, I use the
~/.ssh/tmp directory for it. Whatever you choose, make sure it exists by running
mkdir now. Then add these two lines at the start of your
ControlMaster auto ControlPath ~/.ssh/tmp/%h_%p_%r