create tmux window with ssh sessions to all hosts in service and syncronized input

ssh-to.py

#!/usr/bin/env python

# requirements: ansible, libtmux
# you must set env var INVENTORIES_PATH

import argparse
from ansible.inventory import Inventory
import libtmux as tmux
import os
import sys

parser = argparse.ArgumentParser()

parser.add_argument("-e", "--environ")
parser.add_argument("-s", "--system")
args = parser.parse_args()

if args.system is None:
    sys.exit("you must specify system")

environ = args.environ or "test"
inv_path = "/".join([os.getenv("INVENTORIES_PATH"), environ, "inventory"])
inventory = Inventory(inv_path)

tmx = tmux.Server()

sessions = tmx.list_sessions()
if not sessions:
    session = tmx.new_session()
else:
    session = sessions[0]

w = session.new_window()

hosts = inventory.get_group(args.system).hosts

h = int(session.height) // len(hosts) 

while len(w.panes) < len(hosts):
    p = w.split_window()
    p.set_height(h)

w.select_layout(layout="even-vertical")
for p,h in zip(w.panes, hosts):
    p.send_keys("ssh " + h.name)
w.set_window_option("synchronize-panes", True)