blob: 705591c425a1b8db50937691ee8d17a8ca032fe1 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
#!/bin/bash
# Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
set -e
source "${0%/*}/common.sh"
declare -r DUMMY_KERNEL_NETWORK_MODULE="dummy"
declare -r DUMMY_NETWORK_INTERFACE="dummy0"
function Usage {
UsageHelper "$@" <<EOF
Usage: $SCRIPT_NAME <command>
Manages the network bridge to the Docker container network
Commands:
start Set up the network bridge
stop Tear down the network bridge
restart Stop, then start
EOF
}
function Stop {
echo -n "Removing bridge $HOST_BRIDGE_INTERFACE... "
sudo ip link del "$HOST_BRIDGE_INTERFACE" &>/dev/null || true
if sudo lsmod | grep -q "$DUMMY_KERNEL_NETWORK_MODULE"
then
sudo rmmod "$DUMMY_KERNEL_NETWORK_MODULE"
fi
echo done
}
function MakeBridge {
local ip="$1"
local prefix_bitlength="$2"
local name="$3"
if ip link show dev "$name" up &>/dev/null
then
# TODO: Verify it is indeed set up correctly.
echo "Bridge '$name' already exists, will assume it has been set up correctly"
else
echo -n "Adding bridge $name ($ip) to the container network... "
# Check if the $DUMMY_NETWORK_INTERFACE module is loaded and load if it is not
if ! sudo ip link show $DUMMY_NETWORK_INTERFACE &> /dev/null; then
sudo modprobe "$DUMMY_KERNEL_NETWORK_MODULE"
fi
sudo ip link set "$DUMMY_NETWORK_INTERFACE" up
sudo ip link add dev "$name" link "$DUMMY_NETWORK_INTERFACE" type macvlan mode bridge
sudo ip addr add dev "$name" "$ip/$prefix_bitlength"
sudo ip link set dev "$name" up
echo done
fi
}
function Start {
MakeBridge "$HOST_BRIDGE_IP" "$NETWORK_PREFIX_BITLENGTH" "$HOST_BRIDGE_INTERFACE"
}
Main "$@"
|
