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#!/bin/bash
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# -------------------------------------------------------------------------- #
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# Copyright 2010-2016, OpenNebula Systems #
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# #
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# Licensed under the Apache License, Version 2.0 (the "License"); you may #
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# not use this file except in compliance with the License. You may obtain #
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# a copy of the License at #
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# #
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# http://www.apache.org/licenses/LICENSE-2.0 #
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# #
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# Unless required by applicable law or agreed to in writing, software #
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# distributed under the License is distributed on an "AS IS" BASIS, #
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #
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# See the License for the specific language governing permissions and #
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# limitations under the License. #
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#--------------------------------------------------------------------------- #
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export DNS_VARIABLES="DNS $(env | sed 's/=.*$//' | grep -E '^ETH[0-9]+_DNS$' | sort)"
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export SEARCH_VARIABLES="SEARCH_DOMAIN $(env | sed 's/=.*$//' | grep -E '^ETH[0-9]+_SEARCH_DOMAIN$' | sort)"
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nameservers=$(
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for var in ${DNS_VARIABLES}; do
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value=$(eval "echo \"\${$var}\"")
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if [ -n "$value" ]; then
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echo "$value"
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fi
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done
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)
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searchdomains=$(
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for var in ${SEARCH_VARIABLES}; do
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value=$(eval "echo \"\${$var}\"")
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if [ -n "$value" ]; then
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echo "$value"
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fi
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done
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)
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[ -z "$nameservers" ] && exit 0
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echo -n '' > /etc/resolv.conf
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for nameserver in $nameservers; do
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echo nameserver $nameserver >> /etc/resolv.conf
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done
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[ -z "$searchdomains" ] && exit 0
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echo search $searchdomains >> /etc/resolv.conf
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