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mirror of https://github.com/GNS3/gns3-server synced 2024-11-24 09:18:08 +00:00

Merge pull request #461 from GNS3/ehlers-docker-init

Support /etc/network/interfaces
This commit is contained in:
Julien Duponchelle 2016-03-25 11:34:05 +01:00
commit 2a20333877
7 changed files with 235 additions and 9 deletions

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@ -159,6 +159,10 @@ class DockerVM(BaseVM):
binds.append("{}:/gns3:ro".format(get_resource("modules/docker/resources")))
# We mount our own etc/network
network_config = self._create_network_config()
binds.append("{}:/etc/network:rw".format(network_config))
volumes = image_infos.get("ContainerConfig", {}).get("Volumes")
if volumes is None:
return binds
@ -169,6 +173,37 @@ class DockerVM(BaseVM):
return binds
def _create_network_config(self):
"""
If network config is empty we create a sample config
"""
path = os.path.join(self.working_dir, "etc", "network")
os.makedirs(path, exist_ok=True)
os.makedirs(os.path.join(path, "if-up.d"), exist_ok=True)
os.makedirs(os.path.join(path, "if-down.d"), exist_ok=True)
if not os.path.exists(os.path.join(path, "interfaces")):
with open(os.path.join(path, "interfaces"), "w+") as f:
f.write("""#
# This is a sample network config uncomment lines to configure the network
#
""")
for adapter in range(0, self.adapters):
f.write("""
# Static config for eth{adapter}
#auto eth{adapter}
#iface eth{adapter} inet static
#\taddress 192.168.{adapter}.2
#\tnetmask 255.255.255.0
#\tgateway 192.168.{adapter}.1
#\tup echo nameserver 192.168.{adapter}.1 > /etc/resolv.conf
# DHCP config for eth{adapter}
# auto eth{adapter}
# iface eth{adapter} inet dhcp""".format(adapter=adapter))
return path
@asyncio.coroutine
def create(self):
"""Creates the Docker container."""
@ -199,7 +234,6 @@ class DockerVM(BaseVM):
"Entrypoint": image_infos.get("Config", {"Entrypoint": []})["Entrypoint"]
}
if params["Entrypoint"] is None:
params["Entrypoint"] = []
if self._start_command:
@ -287,7 +321,7 @@ class DockerVM(BaseVM):
# We can not use the API because docker doesn't expose a websocket api for exec
# https://github.com/GNS3/gns3-gui/issues/1039
process = yield from asyncio.subprocess.create_subprocess_exec(
"docker", "exec", "-i", self._cid, "/bin/sh", "-i",
"docker", "exec", "-i", self._cid, "/gns3/bin/busybox", "sh", "-i",
stdout=asyncio.subprocess.PIPE,
stderr=asyncio.subprocess.STDOUT,
stdin=asyncio.subprocess.PIPE)

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@ -0,0 +1,3 @@
#!/tmp/gns3/bin/sh
exec busybox udhcpc -s /gns3/etc/udhcpc/default.script "$@"

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@ -0,0 +1,3 @@
#!/tmp/gns3/bin/sh
exec busybox udhcpc6 -s /gns3/etc/udhcpc/default.script "$@"

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@ -0,0 +1,138 @@
#!/tmp/gns3/bin/sh
# script for udhcpc
# Copyright (c) 2008 Natanael Copa <natanael.copa@gmail.com>
UDHCPC="/gns3/etc/udhcpc"
UDHCPC_CONF="$UDHCPC/udhcpc.conf"
RESOLV_CONF="/etc/resolv.conf"
[ -f $UDHCPC_CONF ] && . $UDHCPC_CONF
export broadcast
export dns
export domain
export interface
export ip
export mask
export metric
export router
export subnet
#export PATH=/usr/bin:/bin:/usr/sbin:/sbin
run_scripts() {
local dir=$1
if [ -d $dir ]; then
for i in $dir/*; do
[ -f $i ] && $i
done
fi
}
deconfig() {
ip addr flush dev $interface
}
is_wifi() {
test -e /sys/class/net/$interface/phy80211
}
if_index() {
if [ -e /sys/class/net/$interface/ifindex ]; then
cat /sys/class/net/$interface/ifindex
else
ip link show dev $interface | head -n1 | cut -d: -f1
fi
}
calc_metric() {
local base=
if is_wifi; then
base=300
else
base=200
fi
echo $(( $base + $(if_index) ))
}
routes() {
[ -z "$router" ] && return
local gw= num=
while ip route del default via dev $interface 2>/dev/null; do
:
done
num=0
for gw in $router; do
ip route add 0.0.0.0/0 via $gw dev $interface \
metric $(( $num + ${IF_METRIC:-$(calc_metric)} ))
num=$(( $num + 1 ))
done
}
resolvconf() {
local i
[ -n "$IF_PEER_DNS" ] && [ "$IF_PEER_DNS" != "yes" ] && return
if [ "$RESOLV_CONF" = "no" ] || [ "$RESOLV_CONF" = "NO" ] \
|| [ -z "$RESOLV_CONF" ]; then
return
fi
echo -n > "$RESOLV_CONF"
[ -n "$domain" ] && echo "search $domain" >> "$RESOLV_CONF"
for i in $dns; do
echo "nameserver $i" >> "$RESOLV_CONF"
done
}
bound() {
ip addr add $ip/$mask ${broadcast:+broadcast $broadcast} dev $interface
ip link set dev $interface up
routes
resolvconf
}
renew() {
if ! ip addr show dev $interface | grep $ip/$mask; then
ip addr flush dev $interface
ip addr add $ip/$mask ${broadcast:+broadcast $broadcast} dev $interface
fi
local i
for i in $router; do
if ! ip route show | grep ^default | grep $i; then
routes
break
fi
done
if ! grep "^search $domain"; then
resolvconf
return
fi
for i in $dns; do
if ! grep "^nameserver $i"; then
resolvconf
return
fi
done
}
case "$1" in
deconfig|renew|bound)
run_scripts $UDHCPC/pre-$1
$1
run_scripts $UDHCPC/post-$1
;;
leasefail)
echo "udhcpc failed to get a DHCP lease" >&2
;;
nak)
echo "udhcpc received DHCP NAK" >&2
;;
*)
echo "Error: this script should be called from udhcpc" >&2
exit 1
;;
esac
exit 0

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@ -1,4 +1,4 @@
#!/bin/sh
#!/gns3/bin/busybox sh
#
# Copyright (C) 2016 GNS3 Technologies Inc.
#
@ -19,6 +19,16 @@
# This script is injected into the container and launch before
# the start command of the container
#
OLD_PATH="$PATH"
PATH=/gns3/bin:/tmp/gns3/bin
# bootstrap busybox commands
if [ ! -d /tmp/gns3/bin ]; then
busybox mkdir -p /tmp/gns3/bin
/gns3/bin/busybox --install -s /tmp/gns3/bin
# remove commands already available in /gns3/bin
(cd /tmp/gns3/bin; rm -f `cd /gns3/bin; echo *`)
fi
# Wait 2 seconds to settle the network interfaces
sleep 2
@ -42,5 +52,9 @@ sed -n 's/^ *\(eth[0-9]*\):.*/\1/p' < /proc/net/dev | while read dev; do
ip link set dev $dev up
done
ifup -a -f
# continue normal docker startup
PATH="$OLD_PATH"
exec "$@"

View File

@ -89,7 +89,10 @@ def test_create(loop, project, manager):
"HostConfig":
{
"CapAdd": ["ALL"],
"Binds": ["{}:/gns3:ro".format(get_resource("modules/docker/resources"))],
"Binds": [
"{}:/gns3:ro".format(get_resource("modules/docker/resources")),
"{}:/etc/network:rw".format(os.path.join(vm.working_dir, "etc", "network"))
],
"Privileged": True
},
"Volumes": {},
@ -126,6 +129,7 @@ def test_create_vnc(loop, project, manager):
"CapAdd": ["ALL"],
"Binds": [
"{}:/gns3:ro".format(get_resource("modules/docker/resources")),
"{}:/etc/network:rw".format(os.path.join(vm.working_dir, "etc", "network")),
'/tmp/.X11-unix/:/tmp/.X11-unix/'
],
"Privileged": True
@ -161,7 +165,10 @@ def test_create_start_cmd(loop, project, manager):
"HostConfig":
{
"CapAdd": ["ALL"],
"Binds": ["{}:/gns3:ro".format(get_resource("modules/docker/resources"))],
"Binds": [
"{}:/gns3:ro".format(get_resource("modules/docker/resources")),
"{}:/etc/network:rw".format(os.path.join(vm.working_dir, "etc", "network"))
],
"Privileged": True
},
"Volumes": {},
@ -194,7 +201,10 @@ def test_create_environment(loop, project, manager):
"HostConfig":
{
"CapAdd": ["ALL"],
"Binds": ["{}:/gns3:ro".format(get_resource("modules/docker/resources"))],
"Binds": [
"{}:/gns3:ro".format(get_resource("modules/docker/resources")),
"{}:/etc/network:rw".format(os.path.join(vm.working_dir, "etc", "network"))
],
"Privileged": True
},
"Env": ["YES=1", "NO=0"],
@ -241,7 +251,10 @@ def test_create_image_not_available(loop, project, manager):
"HostConfig":
{
"CapAdd": ["ALL"],
"Binds": ["{}:/gns3:ro".format(get_resource("modules/docker/resources"))],
"Binds": [
"{}:/gns3:ro".format(get_resource("modules/docker/resources")),
"{}:/etc/network:rw".format(os.path.join(vm.working_dir, "etc", "network"))
],
"Privileged": True
},
"Volumes": {},
@ -452,7 +465,10 @@ def test_update(loop, vm):
"HostConfig":
{
"CapAdd": ["ALL"],
"Binds": ["{}:/gns3:ro".format(get_resource("modules/docker/resources"))],
"Binds": [
"{}:/gns3:ro".format(get_resource("modules/docker/resources")),
"{}:/etc/network:rw".format(os.path.join(vm.working_dir, "etc", "network"))
],
"Privileged": True
},
"Volumes": {},
@ -490,7 +506,10 @@ def test_update_running(loop, vm):
"HostConfig":
{
"CapAdd": ["ALL"],
"Binds": ["{}:/gns3:ro".format(get_resource("modules/docker/resources"))],
"Binds": [
"{}:/gns3:ro".format(get_resource("modules/docker/resources")),
"{}:/etc/network:rw".format(os.path.join(vm.working_dir, "etc", "network"))
],
"Privileged": True
},
"Volumes": {},
@ -763,6 +782,7 @@ def test_mount_binds(vm, tmpdir):
dst = os.path.join(vm.working_dir, "test/experimental")
assert vm._mount_binds(image_infos) == [
"{}:/gns3:ro".format(get_resource("modules/docker/resources")),
"{}:/etc/network:rw".format(os.path.join(vm.working_dir, "etc", "network")),
"{}:{}".format(dst, "/test/experimental")
]
@ -789,3 +809,17 @@ def test_start_aux(vm, loop):
with asyncio_patch("asyncio.subprocess.create_subprocess_exec", return_value=MagicMock()) as mock_exec:
loop.run_until_complete(asyncio.async(vm._start_aux()))
def test_create_network_interfaces(vm):
vm.adapters = 5
network_config = vm._create_network_config()
assert os.path.exists(os.path.join(network_config, "interfaces"))
assert os.path.exists(os.path.join(network_config, "if-up.d"))
with open(os.path.join(network_config, "interfaces")) as f:
content = f.read()
assert "eth0" in content
assert "eth4" in content
assert "eth5" not in content