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189 lines
4.5 KiB
189 lines
4.5 KiB
7 years ago
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Red Hat network scripts integration
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-----------------------------------
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The RPM packages for Open vSwitch provide some integration with Red
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Hat's network scripts. Using this integration is optional.
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To use the integration for a Open vSwitch bridge or interface named
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<name>, create or edit /etc/sysconfig/network-scripts/ifcfg-<name>.
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This is a shell script that consists of a series of VARIABLE=VALUE
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assignments. The following OVS-specific variable names are supported:
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- DEVICETYPE: Always set to "ovs".
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- TYPE: If this is "OVSBridge", then this file represents an OVS
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bridge named <name>. Otherwise, it represents a port on an OVS
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bridge and TYPE must have one of the following values:
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* "OVSPort", if <name> is a physical port (e.g. eth0) or
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virtual port (e.g. vif1.0).
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* "OVSIntPort", if <name> is an internal port (e.g. a tagged
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VLAN).
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* "OVSBond", if <name> is an OVS bond.
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* "OVSTunnel", if <name> is an OVS tunnel.
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- OVS_BRIDGE: If TYPE is anything other than "OVSBridge", set to
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the name of the OVS bridge to which the port should be attached.
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- OVS_OPTIONS: Optionally, extra options to set in the "Port"
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table when adding the port to the bridge, as a sequence of
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column[:key]=value options. For example, "tag=100" to make the
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port an access port for VLAN 100. See the documentation of
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"add-port" in ovs-vsctl(8) for syntax and the section on the
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Port table in ovs-vswitchd.conf.db(5) for available options.
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- OVS_EXTRA: Optionally, additional ovs-vsctl commands, separated
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by "--" (double dash).
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- BOND_IFACES: For "OVSBond" interfaces, a list of physical
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interfaces to bond together.
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- OVS_TUNNEL_TYPE: For "OVSTunnel" interfaces, the type of the tunnel.
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For example, "gre", "vxlan", etc.
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- OVS_TUNNEL_OPTIONS: For "OVSTunnel" interfaces, this field should be
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used to specify the tunnel options like remote_ip, key, etc.
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Note
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----
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* "ifdown" on a bridge will not bring individual ports on the bridge
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down. "ifup" on a bridge will not add ports to the bridge. This
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behavior should be compatible with standard bridges (with
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TYPE=Bridge).
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* If 'ifup' on an interface is called multiple times, one can see
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"RTNETLINK answers: File exists" printed on the console. This comes from
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ifup-eth trying to add zeroconf route multiple times and is harmless.
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Examples
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--------
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Standalone bridge:
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==> ifcfg-ovsbridge0 <==
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DEVICE=ovsbridge0
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ONBOOT=yes
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DEVICETYPE=ovs
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TYPE=OVSBridge
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BOOTPROTO=static
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IPADDR=A.B.C.D
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NETMASK=X.Y.Z.0
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HOTPLUG=no
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Enable DHCP on the bridge:
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* Needs OVSBOOTPROTO instead of BOOTPROTO.
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* All the interfaces that can reach the DHCP server
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as a space separated list in OVSDHCPINTERFACES.
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DEVICE=ovsbridge0
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ONBOOT=yes
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DEVICETYPE=ovs
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TYPE=OVSBridge
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OVSBOOTPROTO="dhcp"
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OVSDHCPINTERFACES="eth0"
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HOTPLUG=no
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Adding Internal Port to ovsbridge0:
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==> ifcfg-intbr0 <==
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DEVICE=intbr0
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ONBOOT=yes
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DEVICETYPE=ovs
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TYPE=OVSIntPort
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OVS_BRIDGE=ovsbridge0
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HOTPLUG=no
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Internal Port with fixed IP address:
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DEVICE=intbr0
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ONBOOT=yes
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DEVICETYPE=ovs
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TYPE=OVSIntPort
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OVS_BRIDGE=ovsbridge0
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BOOTPROTO=static
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IPADDR=A.B.C.D
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NETMASK=X.Y.Z.0
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HOTPLUG=no
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Internal Port with DHCP:
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* Needs OVSBOOTPROTO or BOOTPROTO.
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* All the interfaces that can reach the DHCP server
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as a space separated list in OVSDHCPINTERFACES.
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DEVICE=intbr0
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ONBOOT=yes
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DEVICETYPE=ovs
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TYPE=OVSIntPort
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OVS_BRIDGE=ovsbridge0
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OVSBOOTPROTO="dhcp"
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OVSDHCPINTERFACES="eth0"
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HOTPLUG=no
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Adding physical eth0 to ovsbridge0 described above:
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==> ifcfg-eth0 <==
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DEVICE=eth0
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ONBOOT=yes
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DEVICETYPE=ovs
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TYPE=OVSPort
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OVS_BRIDGE=ovsbridge0
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BOOTPROTO=none
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HOTPLUG=no
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Tagged VLAN interface on top of ovsbridge0:
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==> ifcfg-vlan100 <==
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DEVICE=vlan100
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ONBOOT=yes
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DEVICETYPE=ovs
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TYPE=OVSIntPort
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BOOTPROTO=static
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IPADDR=A.B.C.D
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NETMASK=X.Y.Z.0
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OVS_BRIDGE=ovsbridge0
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OVS_OPTIONS="tag=100"
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OVS_EXTRA="set Interface $DEVICE external-ids:iface-id=$(hostname -s)-$DEVICE-vif"
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HOTPLUG=no
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Bonding:
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==> ifcfg-bond0 <==
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DEVICE=bond0
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ONBOOT=yes
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DEVICETYPE=ovs
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TYPE=OVSBond
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OVS_BRIDGE=ovsbridge0
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BOOTPROTO=none
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BOND_IFACES="gige-1b-0 gige-1b-1 gige-21-0 gige-21-1"
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OVS_OPTIONS="bond_mode=balance-tcp lacp=active"
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HOTPLUG=no
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==> ifcfg-gige-* <==
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DEVICE=gige-*
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ONBOOT=yes
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HOTPLUG=no
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An Open vSwitch Tunnel:
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==> ifcfg-gre0 <==
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DEVICE=ovs-gre0
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ONBOOT=yes
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DEVICETYPE=ovs
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TYPE=OVSTunnel
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OVS_BRIDGE=ovsbridge0
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OVS_TUNNEL_TYPE=gre
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OVS_TUNNEL_OPTIONS="options:remote_ip=A.B.C.D"
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Reporting Bugs
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--------------
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Please report problems to bugs@openvswitch.org.
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