bash script that creates inventory file and calls ansible (works with bastion hosts)

ansible-host-playbook.sh

#!/bin/bash

export ANSIBLE_SSH_PIPELINING=1
ANSIBLE_PYTHON3_CONFIG="ansible_python_interpreter=/usr/bin/python3"

if [ $# -ne 2 ]
then
  echo "Usage: $0 [user@]host[#bastion_user@bastion_host] playbook.yml"
  exit 1
fi

hostinventory=$(mktemp /tmp/ansible-host-playbook.XXXXXX)
trap "rm -f $hostinventory" EXIT

ssh_user_and_host=$1
ssh_bastion=""

IFS='#' read -a bastion_parsed <<< "$ssh_user_and_host"

if [ ${#bastion_parsed[@]} -eq 2 ]; then
	ssh_user_and_host=${bastion_parsed[0]}
	ssh_bastion=${bastion_parsed[1]}
fi


IFS='@' read -a ssh_parsed <<< "$ssh_user_and_host"

if [ ${#ssh_parsed[@]} -eq 2 ]; then
    echo -n "${ssh_parsed[1]} ansible_ssh_user=${ssh_parsed[0]} $ANSIBLE_PYTHON3_CONFIG"  > $hostinventory
else
    echo -n "$ssh_user_and_host $ANSIBLE_PYTHON3_CONFIG"  > $hostinventory
fi

if [ "$ssh_bastion" != "" ]; then
	echo ' ansible_ssh_common_args="-o StrictHostKeyChecking=no -o ProxyCommand=\"ssh -W %h:%p -q '$ssh_bastion'\""'  >> $hostinventory
else
	echo >> $hostinventory
fi


cmd="ansible-playbook -i $hostinventory $2"
echo Calling $cmd with following inventory:
cat $hostinventory
eval $cmd