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Open vSwitch
Packages in distro
- CentOS N/A
- Fedora openvswitch
- Ubuntu openvswitch-switch
CentOS KVM installation
This installation procedure was tested with CentOS 6.4 and openvswitch version 1.9. Openvswitch required some custom patches to work with the kernel version supplied with CentOS 6.4, these patches are at the bottom of this page.
Base installation
CentOS 6.4 Basic Server
Install Virtualization tools
yum groupinstall Virtualization "Virtualization Client" "Virtualization Platform" "Virtualization Tools"
Verify Installation. The following packages should be installed
- hypervkvpd.x86_64 0:0-0.9.el6
- libguestfs.x86_64 1:1.16.34-2.el6
- libvirt.x86_64 0:0.10.2-18.el6_4.3
- libvirt-client.x86_64 0:0.10.2-18.el6_4.3
- python-virtinst.noarch 0:0.600.0-15.el6
- qemu-kvm.x86_64 2:0.12.1.2-2.355.0.1.el6.centos.2
- virt-manager.x86_64 0:0.9.0-18.el6
- virt-top.x86_64 0:1.0.4-3.15.el6
- virt-viewer.x86_64 0:0.5.2-18.el6_4.2
Modify libvirt configuration
Edit /etc/libvirt/libvirtd.conf
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listen_tls = 0 listen_tcp = 1 tcp_port = "16059" auth_tcp = "none" mdns_adv = 0 |
Edit /etc/sysconfig/libvirtd
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LIBVIRTD_ARGS="--listen" |
Start libvirtd
- /etc/init.d/libvirtd start
- /etc/init.d/libvirtd status
Verify installation:
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# virsh capabilities |
Should list two guest tags with os_type hvm
Build and install openvswitch:
Install build requirements:
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# yum install rpmdevtools openssl-devel kernel-devel gcc redhat-rpm-config
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Build packages:
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# mkdir -p ~/rpmbuild/SOURCES
# curl -O http://openvswitch.org/releases/openvswitch-1.9.0.tar.gz
# cp openvswitch-1.9.0.tar.gz ~/rpmbuild/SOURCES
# cp centos64-openvswitch.patch ~/rpmbuild/SOURCES
# tar -xzf openvswitch-1.9.0.tar.gz
# cd openvswitch-1.9.0
# patch -p1 < ~/rpmbuild/SOURCES/centos64-openvswitch.patch
# rpmbuild -bb rhel/openvswitch.spec
# rpmbuild -bb -D "kversion `uname -r`" rhel/openvswitch-kmod-rhel6.spec
|
Install openvswitch:
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# yum install ~/rpmbuild/RPMS/x86_64/kmod-openvswitch-1.9.0-1.el6.x86_64.rpm ~/rpmbuild/RPMS/x86_64/openvswitch-1.9.0-1.x86_64.rpm
# echo 'blacklist bridge' >> /etc/modprobe.d/blacklist.conf
# reboot
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Verify installation
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# lsmod |grep openvswitch
# ovs-vsctl -V
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Network design:
cloudbr0 (Management, Storage)
ip: 172.16.10.10/24
gateway: 172.16.10.1
eth0 (physical port, no vlans)
cloudbr1 (Guest, Public)
eth1 (physical port, vlan trunk)
ip: none
Configure network interfaces:
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/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=none
IPV6INIT=no
NM_CONTROLLED=no
ONBOOT=yes
TYPE=OVSPort
DEVICETYPE=ovs
OVS_BRIDGE=cloudbr0
/etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
BOOTPROTO=none
IPV6INIT=no
NM_CONTROLLED=no
ONBOOT=yes
TYPE=OVSPort
DEVICETYPE=ovs
OVS_BRIDGE=cloudbr1
/etc/sysconfig/network-scripts/ifcfg-cloudbr0
DEVICE=cloudbr0
ONBOOT=yes
DEVICETYPE=ovs
TYPE=OVSBridge
BOOTPROTO=static
IPADDR=172.16.10.10
GATEWAY=172.16.10.1
NETMASK=255.255.255.0
HOTPLUG=no
/etc/sysconfig/network-scripts/ifcfg-cloudbr1
DEVICE=cloudbr1
ONBOOT=yes
DEVICETYPE=ovs
TYPE=OVSBridge
BOOTPROTO=none
HOTPLUG=no
/etc/sysconfig/network
NETWORKING=yes
HOSTNAME=testkvm1
GATEWAY=172.10.10.1
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Install cloudstack-agent
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# yum install cloudstack-agent |
Edit /etc/cloudstack/agent/agent.properties
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network.bridge.type=openvswitch
libvirt.vif.driver=com.cloud.hypervisor.kvm.resource.OvsVifDriver
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Now add the host to cloudstack.
centos64-openvswitch.patch
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diff -ru openvswitch-1.9.0-clean/datapath/linux/compat/include/linux/etherdevice.h openvswitch-1.9.0/datapath/linux/compat/include/linux/etherdevice.h
--- openvswitch-1.9.0-clean/datapath/linux/compat/include/linux/etherdevice.h 2013-02-26 21:25:37.000000000 +0100
+++ openvswitch-1.9.0/datapath/linux/compat/include/linux/etherdevice.h 2013-04-25 10:45:09.942027933 +0200
@@ -4,16 +4,4 @@
#include <linux/version.h>
#include_next <linux/etherdevice.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36)
-static inline void eth_hw_addr_random(struct net_device *dev)
-{
- random_ether_addr(dev->dev_addr);
-}
-#elif LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0)
-static inline void eth_hw_addr_random(struct net_device *dev)
-{
- dev_hw_addr_random(dev, dev->dev_addr);
-}
-#endif
-
#endif
diff -ru openvswitch-1.9.0-clean/datapath/linux/compat/include/linux/if_vlan.h openvswitch-1.9.0/datapath/linux/compat/include/linux/if_vlan.h
--- openvswitch-1.9.0-clean/datapath/linux/compat/include/linux/if_vlan.h 2013-02-26 21:25:37.000000000 +0100
+++ openvswitch-1.9.0/datapath/linux/compat/include/linux/if_vlan.h 2013-04-25 10:44:33.270023182 +0200
@@ -55,38 +55,4 @@
#define VLAN_TAG_PRESENT VLAN_CFI_MASK
#endif
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3,3,0)
-static inline void vlan_set_encap_proto(struct sk_buff *skb, struct vlan_hdr *vhdr)
-{
- __be16 proto;
- unsigned char *rawp;
-
- /*
- * Was a VLAN packet, grab the encapsulated protocol, which the layer
- * three protocols care about.
- */
-
- proto = vhdr->h_vlan_encapsulated_proto;
- if (ntohs(proto) >= 1536) {
- skb->protocol = proto;
- return;
- }
-
- rawp = skb->data;
- if (*(unsigned short *) rawp == 0xFFFF)
- /*
- * This is a magic hack to spot IPX packets. Older Novell
- * breaks the protocol design and runs IPX over 802.3 without
- * an 802.2 LLC layer. We look for FFFF which isn't a used
- * 802.2 SSAP/DSAP. This won't work for fault tolerant netware
- * but does for the rest.
- */
- skb->protocol = htons(ETH_P_802_3);
- else
- /*
- * Real 802.2 LLC
- */
- skb->protocol = htons(ETH_P_802_2);
-}
-#endif
#endif /* linux/if_vlan.h wrapper */
diff -ru openvswitch-1.9.0-clean/datapath/linux/compat/include/linux/skbuff.h openvswitch-1.9.0/datapath/linux/compat/include/linux/skbuff.h
--- openvswitch-1.9.0-clean/datapath/linux/compat/include/linux/skbuff.h 2013-02-26 21:25:37.000000000 +0100
+++ openvswitch-1.9.0/datapath/linux/compat/include/linux/skbuff.h 2013-04-25 10:43:21.167021697 +0200
@@ -245,10 +245,4 @@
}
#endif
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,40)
-static inline void skb_reset_mac_len(struct sk_buff *skb)
-{
- skb->mac_len = skb->network_header - skb->mac_header;
-}
-#endif
#endif
diff -ru openvswitch-1.9.0-clean/rhel/openvswitch-kmod-rhel6.spec openvswitch-1.9.0/rhel/openvswitch-kmod-rhel6.spec
--- openvswitch-1.9.0-clean/rhel/openvswitch-kmod-rhel6.spec 2013-02-26 21:25:52.000000000 +0100
+++ openvswitch-1.9.0/rhel/openvswitch-kmod-rhel6.spec 2013-04-25 10:40:41.039023915 +0200
@@ -22,6 +22,7 @@
Source0: %{oname}-%{version}.tar.gz
BuildRoot: %(mktemp -ud %{_tmppath}/%{name}-%{version}-%{release}-XXXXXX)
BuildRequires: %kernel_module_package_buildreqs
+Patch0: centos64-openvswitch.patch
# Without this we get an empty openvswitch-debuginfo package (whose name
# conflicts with the openvswitch-debuginfo package for OVS userspace).
@@ -43,6 +44,7 @@
%prep
%setup -n %{oname}-%{version}
+%patch0 -p1
%build
for flavor in %flavors_to_build; do
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