Created
September 21, 2017 06:03
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set up vxlan lab environment
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| #/usr/bin/env sh | |
| set -e | |
| if [ $# -ne 3 ]; then | |
| echo "Usage: $0 bridgename containername containerip" | |
| exit 1 | |
| fi | |
| BRIDGE_NAME=$1 | |
| CONTAINER_NAME=$2 | |
| CONTAINER_IP=$3 | |
| VETH_OUT=veth-${RANDOM}${RANDOM} | |
| VETH_IN=veth-${RANDOM}${RANDOM} | |
| IFACE_NAME=eth0 | |
| # create a network namespace with specified name | |
| ip netns add "$CONTAINER_NAME" | |
| # create veth peer | |
| ip link add "${VETH_OUT}" type veth peer name "${VETH_IN}" | |
| ip link set dev "$VETH_OUT" master "$BRIDGE_NAME" | |
| ip link set dev "${VETH_OUT}" up | |
| # config container network | |
| ip link set dev ${VETH_IN} netns ${CONTAINER_NAME} | |
| ip netns exec ${CONTAINER_NAME} ip link set lo up | |
| ip netns exec ${CONTAINER_NAME} ip link set ${VETH_IN} name ${IFACE_NAME} | |
| ip netns exec ${CONTAINER_NAME} ip addr add "$CONTAINER_IP" dev ${IFACE_NAME} | |
| ip netns exec ${CONTAINER_NAME} ip link set ${IFACE_NAME} up |
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