63 lines
1.7 KiB
Bash
63 lines
1.7 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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set -e
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# Execution example: lxc-veth-wiring.sh testing VETHTEST eth1 br-mgmt
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# CLI variables
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CONTAINER_NAME="${1}"
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export CPID=$(lxc-info -Hpn ${CONTAINER_NAME});
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VETH="${2}"
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INTERFACE="${3}"
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BRIDGE="${4}"
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VETH_PEER="$(openssl rand -hex 4)"
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# PID of running container
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PID="$(lxc-info -pHn ${CONTAINER_NAME})"
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# Exit 0 means no change, exit 3 is changed, any other exit is fail.
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EXIT_CODE=0
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function ns_cmd {
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nsenter --mount=/proc/$CPID/ns/mnt \
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--net=/proc/$CPID/ns/net \
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--pid=/proc/$CPID/ns/pid \
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--uts=/proc/$CPID/ns/uts \
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--ipc=/proc/$CPID/ns/ipc -- $@
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}
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if ! ip a l "${VETH}";then
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ip link add name "${VETH}" type veth peer name "${VETH_PEER}"
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EXIT_CODE=3
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fi
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ip link set dev "${VETH}" up
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if ip a l "${VETH_PEER}";then
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ip link set dev "${VETH_PEER}" up
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ip link set dev "${VETH_PEER}" netns "${PID}" name "${INTERFACE}"
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EXIT=3
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fi
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if ! brctl show "${BRIDGE}" | grep -q "${VETH}"; then
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brctl addif "${BRIDGE}" "${VETH}"
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EXIT_CODE=3
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fi
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ns_cmd ip link set dev "${INTERFACE}" down || true
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ns_cmd systemctl restart systemd-networkd
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exit ${EXIT_CODE}
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