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nixos/containers: don't create veths if not configured

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Previously, setting "privateNetwork = true" without specifying host and
local addresses would create unconfigured interfaces: ve-$INSTANCE on the host
and eth0 inside the container.

These changes is rebased part of the original PR #3021.
This commit is contained in:
Nikita Uvarov 2018-10-29 12:26:18 +01:00
parent 188ce907e3
commit 6d4b02df3f
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GPG key ID: F7A5FB3A7C10EF96
1 changed files with 9 additions and 5 deletions
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10
nixos/modules/virtualisation/containers.nix
View file

@ -36,7 +36,7 @@ let
#! ${pkgs.runtimeShell} -e
# Initialise the container side of the veth pair.
if [ "$PRIVATE_NETWORK" = 1 ]; then
if [ -n "$HOST_ADDRESS" ] || [ -n "$LOCAL_ADDRESS" ]; then
ip link set host0 name eth0
ip link set dev eth0 up
@ -85,6 +85,10 @@ let
cp --remove-destination /etc/resolv.conf "$root/etc/resolv.conf"
if [ "$PRIVATE_NETWORK" = 1 ]; then
extraFlags+=" --private-network"
fi
if [ -n "$HOST_ADDRESS" ] || [ -n "$LOCAL_ADDRESS" ]; then
extraFlags+=" --network-veth"
if [ -n "$HOST_BRIDGE" ]; then
extraFlags+=" --network-bridge=$HOST_BRIDGE"
@ -153,7 +157,7 @@ let
# Clean up existing machined registration and interfaces.
machinectl terminate "$INSTANCE" 2> /dev/null || true
if [ "$PRIVATE_NETWORK" = 1 ]; then
if [ -n "$HOST_ADDRESS" ] || [ -n "$LOCAL_ADDRESS" ]; then
ip link del dev "ve-$INSTANCE" 2> /dev/null || true
ip link del dev "vb-$INSTANCE" 2> /dev/null || true
fi
@ -200,7 +204,7 @@ let
'';
in
''
if [ "$PRIVATE_NETWORK" = 1 ]; then
if [ -n "$HOST_ADDRESS" ] || [ -n "$LOCAL_ADDRESS" ]; then
if [ -z "$HOST_BRIDGE" ]; then
ifaceHost=ve-$INSTANCE
ip link set dev $ifaceHost up