openvswitch - fix multiple issues, ref #885

appliances/openvswitch-management.gns3a

@@ -16,6 +16,6 @@
     "docker": {
         "adapters": 16,
         "image": "gns3/openvswitch:latest",
-        "environment": "MANAGEMENT_INTERFACE=1"
+        "environment": "MANAGEMENT_INTERFACE=eth0"
     }
 }

docker/openvswitch/Dockerfile

@@ -6,7 +6,7 @@ RUN apk add --no-cache openvswitch nano bash bash-completion
 RUN sed -i s,/bin/ash,/bin/bash, /etc/passwd
 
 # Enable bash completion
-RUN echo -e "source /etc/profile.d/bash_completion.sh" >> ~/.bashrc
+RUN echo -e "source /etc/bash/bash_completion.sh" >> ~/.bashrc
 
 # Enable openvswitch bash completion
 RUN echo -e "source /usr/share/bash-completion/completions/ovs-vsctl-bashcomp.bash" >> ~/.bashrc
@@ -15,10 +15,8 @@ RUN echo -e "source /usr/share/bash-completion/completions/ovs-appctl-bashcomp.b
 # Configure the prompt
 RUN echo -e "PS1='\h:\w\$ '" >> ~/.bashrc
 
-RUN mkdir /var/run/openvswitch
+VOLUME [ "/root", "/etc/openvswitch" ]
 
-VOLUME /etc/openvswitch/
+ADD init.sh /etc/openvswitch/
 
-ADD boot.sh /bin/boot.sh
-
-CMD /bin/bash /bin/boot.sh
+CMD /etc/openvswitch/init.sh; bash

docker/openvswitch/README.md

@@ -0,0 +1,18 @@
+# Docker Open vSwitch for GNS3
+
+This creates a container for using Open vSwitch in GNS3.
+
+This container supports ethernet interfaces and comes
+with bridges from br0 to br3.
+
+By default, all interfaces are connected to br0.
+
+If you set the `MANAGEMENT_INTERFACE` environment variable to
+an interface name, that interface will not be connected to br0.
+
+
+## Building the container
+
+```
+docker build -t gns3/openvswitch .
+```

docker/openvswitch/init.sh

@@ -0,0 +1,52 @@
+#!/bin/sh
+#
+# Copyright (C) 2024 GNS3 Technologies Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+firstrun=0
+[ -f "/etc/openvswitch/conf.db" ] || firstrun=1
+
+if [ $firstrun -ne 0 ]; then
+  # create database
+  ovsdb-tool create /etc/openvswitch/conf.db /usr/share/openvswitch/vswitch.ovsschema
+fi
+
+# start openvswitch daemons
+mkdir -p /var/log/openvswitch /var/run/openvswitch
+ovsdb-server --detach --pidfile --remote=punix:/var/run/openvswitch/db.sock \
+             --log-file --verbose=off:syslog
+ovs-vswitchd --detach --pidfile --log-file --verbose=off:syslog
+
+if [ $firstrun -ne 0 ]; then
+  ovs-vsctl --no-wait init
+
+  # create br0..br3
+  for intf in br0 br1 br2 br3; do
+    ovs-vsctl add-br $intf
+    ovs-vsctl set bridge $intf datapath_type=netdev
+  done
+
+  # add all ethernet interfaces to br0, except MANAGEMENT_INTERFACE
+  [ "$MANAGEMENT_INTERFACE" = 1 ] && MANAGEMENT_INTERFACE=eth0
+  sed -n 's/^ *\(eth[0-9]*\): .*/\1/p' /proc/net/dev | sort -V | \
+  while read -r intf; do
+    [ "$intf" = "$MANAGEMENT_INTERFACE" ] || ovs-vsctl add-port br0 "$intf"
+  done
+fi
+
+# activate br0..br3
+for intf in br0 br1 br2 br3; do
+  ip link set dev $intf up
+done