38 lines
1.6 KiB
Bash
38 lines
1.6 KiB
Bash
#!/usr/bin/env bash
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# Copyright 2016, Rackspace US, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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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# NOTICE:
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# When running in an AIO, we need to drop the following iptables rule in any
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# neutron_agent containers to that ensure instances can communicate with the
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# neutron metadata service. This is necessary because in an AIO environment
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# there are no physical interfaces involved in instance -> metadata requests,
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# and this results in the checksums being incorrect.
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# Iptables path, used for ipv4 firewall.
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IPTABLES=$(which iptables)
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if [ ! -z "${IPTABLES}" ]; then
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if ! ${IPTABLES} -C POSTROUTING -t mangle -p tcp --sport 80 -j CHECKSUM --checksum-fill 2> /dev/null; then
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${IPTABLES} -A POSTROUTING -t mangle -p tcp --sport 80 -j CHECKSUM --checksum-fill
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fi
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fi
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# Ip6tables path, used for ipv6 firewall.
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IP6TABLES=$(which ip6tables)
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if [ ! -z "${IP6TABLES}" ]; then
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if ! ${IP6TABLES} -C POSTROUTING -t mangle -p udp --sport 80 -j CHECKSUM --checksum-fill 2> /dev/null; then
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${IP6TABLES} -A POSTROUTING -t mangle -p udp --sport 80 -j CHECKSUM --checksum-fill
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fi
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fi
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