Install Open vSwitch Networking on Red Hat Fedora 20
The following tutorial will bootstrap you in installing and configuring Open vSwitch on Red Hat Fedora 20. It also has some extras that are just general Fedora configuration tasks such as setting up networking along with Wireshark over an X11 ssh session. This is the first of lots of integration posts over the next year as we develop network virtualization in Open Daylight and continue to integrate further into OpenStack. The “we” is a royal “we”. It is the awesome team I am on at Red Hat, but much broader, the OpenDaylight and OpenStack communities and the thousands of contributors around the world that truly mak the difference. The OVSDB ODL team is hyper-focused on simplifying and automating the deployment and integration of cloud infrastructures. Complexity is in my opinion, typically a hurdle for consumers of open source projects and cloud/scale in general.
General Fedora Configuration
First some general configurations of Fedora 20 that I tend to use in a fresh image to be sued for development. Turn down some security services for initial development. These being on are obviously important for production services.
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sudo systemctl stop firewalld.service /usr/sbin/getenforce /usr/sbin/setenforce 0 /usr/sbin/getenforce |
To disable Selinux persistently modify the following and reboot:
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sudo sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config |
Install Wireshark with:
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sudo yum install wireshark |
Optionally enable X11 forwarding for Wireshark pcaps. If you have a desktop manager installed, yum install wireshark with do it. If a windows manager (such as Gnome) is not isntalled, add the following dependencies:
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sudo yum install wireshark xorg-x11-xauth xorg-x11-fonts-* xorg-x11-utils wireshark-gnome sudo yum install wireshark |
The OpenFlow disector is bundled into the Wireshark RPM by default which is excellent for those of us that have spent many hours patching disectors to get them to compile in the past. If on a Mac download XQuartz for X11 at http://xquartz.macosforge.org.
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sudo sed -i 's/#X11Forwarding\ no/X11Forwarding\ yes/' /etc/ssh/sshd_config sudo systemctl restart sshd.service |
Now you can ssh to the guest OS w/ “ssh -X
Setup Fedora Networking
Edit the following configuration file for IPv(x) and netmask configs – “/etc/sysconfig/network-scripts/ifcfg-en*” (*=some unique number) using the following example:
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/etc/sysconfig/network-scripts/ifcfg-en* ---------------------------------------- TYPE=Ethernet BOOTPROTO=static IPADDR=172.16.58.180 NETMASK=255.255.255.0 DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=no IPV6_AUTOCONF=no IPV6_DEFROUTE=no IPV6_FAILURE_FATAL=no NAME=eth0 UUID=d61f1687-9bcb-4f35-bac1-ddf27c777526 ONBOOT=yes HWADDR=00:0C:29:91:09:95 PEERDNS=yes PEERROUTES=yes IPV6_PEERDNS=yes IPV6_PEERROUTES=yes |
Edit the following configuration file for IPv(x) and netmask configs – “/etc/sysconfig/network”:
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/etc/sysconfig/network ---------------------- NETWORKING=yes HOSTNAME=fedora2 GATEWAY=172.16.58.1 |
General Fedora Configuration
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$ sudo yum info openvswitch Available Packages Name : openvswitch Arch : x86_64 Version : 2.0.0 Release : 1.fc20 Size : 1.5 M Repo : fedora/20/x86_64 Summary : Open vSwitch daemon/database/utilities URL : http://openvswitch.org License : ASL 2.0 and LGPLv2+ and SISSL Description : Open vSwitch provides standard network bridging functions and : support for the OpenFlow protocol for remote per-flow control of : traffic. |
The Open vSwitch install is the easiest part. The Fedora folks did an exceptional job with this. I am seriosuly ecstatic how well this was done. Mileage has varied with OVS package support from all Linux distros in the past but this was a bangup job with kernel mod support and so important.
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sudo yum install openvswitch sudo /sbin/service openvswitch start |
Verify kernel modules loaded with the following:
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$ lsmod | grep openv openvswitch 66772 0 vxlan 37238 1 openvswitch gre 13888 1 openvswitch libcrc32c 12603 1 openvswitch |
The following is a verbose output of the install:
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$ sudo yum install openvswitch Resolving Dependencies --> Running transaction check ---> Package openvswitch.x86_64 0:2.0.0-1.fc20 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================================== Package Arch Version Repository Size ================================================================================================== Installing: openvswitch x86_64 2.0.0-1.fc20 fedora 1.5 M Transaction Summary ================================================================================================== Install 1 Package Total download size: 1.5 M Installed size: 6.3 M Is this ok [y/d/N]: y Downloading packages: openvswitch-2.0.0-1.fc20.x86_64.rpm | 1.5 MB 00:00:08 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : openvswitch-2.0.0-1.fc20.x86_64 1/1 Verifying : openvswitch-2.0.0-1.fc20.x86_64 1/1 Installed: openvswitch.x86_64 0:2.0.0-1.fc20 Complete! [brent@wtf1 ~]$ sudo /sbin/modprobe openvswitch [brent@wtf1 ~]$ sudo lsmod | grep open openvswitch 66772 0 vxlan 37238 1 openvswitch gre 13888 1 openvswitch libcrc32c 12603 1 openvswitch $ sudo ovs-vsctl --version ovs-vsctl (Open vSwitch) 2.0.0 Compiled Oct 28 2013 23:38:30 |
View the startup script for various runtime options:
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/usr/share/openvswitch/scripts/ovs-ctl start |
Open vSwitch Commands
Finally are some random commands that I keep in my ~/.bashrc for lazyness, I mean efficiency.
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########################################### ###### Fedora ~/.bashrc lazy aliases ###### ########################################### alias ovs='sudo ovs-vsctl show' alias ovsd='sudo ovsdb-client dump' alias ovsp='sudo ovs-dpctl show' alias ovsf='sudo ovs-ofctl ' alias logs="sudo journalctl -n 300" alias ologs="tail -n 300 /var/log/openvswitch/ovs-vswitchd.log" alias vsh="sudo virsh list" alias ovtun="sudo ovs-ofctl dump-flows br-tun" alias ovint="sudo ovs-ofctl dump-flows br-int" alias ovap="sudo ovs-appctl fdb/show " alias ovapd="sudo ovs-appctl bridge/dump-flows " alias ovl="sudo ovs-ofctl dump-flows br-int" alias dfl="ovs-ofctl -O OpenFlow13 del-flows " alias ovls="ovs-ofctl -O OpenFlow13 dump-flows br-int" alias dpfl="ovs-dpctl dump-flows " alias ovsdbl="ovsdb-client dump -f list" alias ofport="ovs-ofctl -O OpenFlow13 dump-ports br-int" alias del="ovs-ofctl -O OpenFlow13 del-flows " alias delman="ovs-vsctl del-manager" alias addman="ovs-vsctl set-manager tcp:172.16.58.1:6640" alias prof="vi ~/.bash_profile" alias nmap="nmap -sT " alias code="cd ~/code/" alias hex='printf "%d\n"' alias ma='mvn clean install -DskipTests -Dmaven.compile.fork=true' alias mansu='mvn clean install -DskipTests -Dmaven.compile.fork=true -nsu' alias lsoff='lsof -P -iTCP -sTCP:LISTEN' alias pkil='killall java' alias src="source ~/.bashrc" alias vsh="sudo virsh list" alias ns="sudo ip netns exec " |
Get Involved In Something
Thanks to all of those that work so hard to deliver all of these amazing projects and changing industry through collaboration and commitment. Its a great time for those seeking to evolve. Pop into #opendaylight-ovsdb on irc.freenode.net and get to know some great folks if interested in an up and coming project. You can even meet Madhu’s Roomba.
Thanks for stopping by!
Brent,
OpenFlow’m studying, my question is do the communication with the controller OpenDayLight Openvswitch “without making use of Mininet”. Do you have any post here on my blog?
And the Openvswitch installation for OpenFlow this one serve?