tripleo-image-elements/elements/iptables/bin/add-rule

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#!/bin/bash
# Script to add iptables rules per element
#
# The only input argument is an iptables rule without the command option.
# This case covers all of the current usage of elements that insert rules
# in the 97-iptables files.
# Example usage:
# add-rule INPUT -p tcp -m multiport --dports 3260,8776 -j ACCEPT
# add-rule INPUT -p tcp --dport 4730 -j ACCEPT
# add-rule FORWARD -d 192.0.2.0/24 -j ACCEPT
set -eu
RULE="$@"
DISTRO=`lsb_release -si` || true
if [[ "RedHatEnterpriseServer CentOS Fedora" =~ "$DISTRO" ]]; then
# Check if the iptables service is active
if systemctl is-active iptables.service ; then
IPT_FILE=/etc/sysconfig/iptables
if [ -f $IPT_FILE ]; then
iptables-restore < $IPT_FILE
fi
iptables -C $RULE || iptables -I $RULE
iptables-save > $IPT_FILE
fi
fi