# # AUTHOR , YEAR. # msgid "" msgstr "" "Project-Id-Version: 0\n" "POT-Creation-Date: 2013-02-02T20:11:58\n" "PO-Revision-Date: 2013-02-02T20:11:58\n" "Last-Translator: Automatically generated\n" "Language-Team: None\n" "MIME-Version: 1.0\n" "Content-Type: application/x-publican; charset=UTF-8\n" "Content-Transfer-Encoding: 8bit\n" #. Tag: title #, no-c-format msgid "Configure the network using OpenVswitch" msgstr "" #. Tag: para #, no-c-format msgid "This is a very important section, please make sure you read this thoroughly." msgstr "" #. Tag: para #, no-c-format msgid "In order to forward traffic to your instances you will need at least two bridges: public and private." msgstr "" #. Tag: para #, no-c-format msgid "By default these bridges are called cloudbr0 and cloudbr1, but you do have to make sure they are available on each hypervisor." msgstr "" #. Tag: para #, no-c-format msgid "The most important factor is that you keep the configuration consistent on all your hypervisors." msgstr "" #. Tag: title #, no-c-format msgid "Preparing" msgstr "" #. Tag: para #, no-c-format msgid "To make sure that the native bridge module will not interfere with openvswitch the bridge module should be added to the blacklist. See the modprobe documentation for your distribution on where to find the blacklist. Make sure the module is not loaded either by rebooting or executing rmmod bridge before executing next steps." msgstr "" #. Tag: para #, no-c-format msgid "The network configurations below depend on the ifup-ovs and ifdown-ovs scripts which are part of the openvswitch installation. They should be installed in /etc/sysconfig/network-scripts/" msgstr "" #. Tag: title #, no-c-format msgid "Network example" msgstr "" #. Tag: para #, no-c-format msgid "There are many ways to configure your network. In the Basic networking mode you should have two (V)LAN's, one for your private network and one for the public network." msgstr "" #. Tag: para #, no-c-format msgid "We assume that the hypervisor has one NIC (eth0) with three tagged VLAN's:" msgstr "" #. Tag: para #, no-c-format msgid "VLAN 100 for management of the hypervisor" msgstr "" #. Tag: para #, no-c-format msgid "VLAN 200 for public network of the instances (cloudbr0)" msgstr "" #. Tag: para #, no-c-format msgid "VLAN 300 for private network of the instances (cloudbr1)" msgstr "" #. Tag: para #, no-c-format msgid "On VLAN 100 we give the Hypervisor the IP-Address 192.168.42.11/24 with the gateway 192.168.42.1" msgstr "" #. Tag: para #, no-c-format msgid "The Hypervisor and Management server don't have to be in the same subnet!" msgstr "" #. Tag: title #, no-c-format msgid "Configuring the network bridges" msgstr "" #. Tag: para #, no-c-format msgid "It depends on the distribution you are using how to configure these, below you'll find examples for RHEL/CentOS." msgstr "" #. Tag: para #, no-c-format msgid "The goal is to have three bridges called 'mgmt0', 'cloudbr0' and 'cloudbr1' after this section. This should be used as a guideline only. The exact configuration will depend on your network layout." msgstr "" #. Tag: title #, no-c-format msgid "Configure OpenVswitch" msgstr "" #. Tag: para #, no-c-format msgid "The network interfaces using OpenVswitch are created using the ovs-vsctl command. This command will configure the interfaces and persist them to the OpenVswitch database." msgstr "" #. Tag: para #, no-c-format msgid "First we create a main bridge connected to the eth0 interface. Next we create three fake bridges, each connected to a specific vlan tag." msgstr "" #. Tag: programlisting #, no-c-format msgid "# ovs-vsctl add-br cloudbr\n" "# ovs-vsctl add-port cloudbr eth0 \n" "# ovs-vsctl set port cloudbr trunks=100,200,300\n" "# ovs-vsctl add-br mgmt0 cloudbr 100\n" "# ovs-vsctl add-br cloudbr0 cloudbr 200\n" "# ovs-vsctl add-br cloudbr1 cloudbr 300" msgstr "" #. Tag: title #, no-c-format msgid "Configure in RHEL or CentOS" msgstr "" #. Tag: para #, no-c-format msgid "The required packages were installed when openvswitch and libvirt were installed, we can proceed to configuring the network." msgstr "" #. Tag: para #, no-c-format msgid "First we configure eth0" msgstr "" #. Tag: programlisting #, no-c-format msgid "vi /etc/sysconfig/network-scripts/ifcfg-eth0" msgstr "" #. Tag: para #, no-c-format msgid "Make sure it looks similair to:" msgstr "" #. Tag: programlisting #, no-c-format msgid "DEVICE=eth0\n" "HWADDR=00:04:xx:xx:xx:xx\n" "ONBOOT=yes\n" "HOTPLUG=no\n" "BOOTPROTO=none\n" "TYPE=Ethernet" msgstr "" #. Tag: para #, no-c-format msgid "We have to configure the base bridge with the trunk." msgstr "" #. Tag: programlisting #, no-c-format msgid "vi /etc/sysconfig/network-scripts/ifcfg-cloudbr" msgstr "" #. Tag: programlisting #, no-c-format msgid "DEVICE=cloudbr\n" "ONBOOT=yes\n" "HOTPLUG=no\n" "BOOTPROTO=none\n" "DEVICETYPE=ovs\n" "TYPE=OVSBridge" msgstr "" #. Tag: para #, no-c-format msgid "We now have to configure the three VLAN bridges:" msgstr "" #. Tag: programlisting #, no-c-format msgid "vi /etc/sysconfig/network-scripts/ifcfg-mgmt0" msgstr "" #. Tag: programlisting #, no-c-format msgid "DEVICE=mgmt0\n" "ONBOOT=yes\n" "HOTPLUG=no\n" "BOOTPROTO=static\n" "DEVICETYPE=ovs\n" "TYPE=OVSBridge\n" "IPADDR=192.168.42.11\n" "GATEWAY=192.168.42.1\n" "NETMASK=255.255.255.0" msgstr "" #. Tag: programlisting #, no-c-format msgid "vi /etc/sysconfig/network-scripts/ifcfg-cloudbr0" msgstr "" #. Tag: programlisting #, no-c-format msgid "DEVICE=cloudbr0\n" "ONBOOT=yes\n" "HOTPLUG=no\n" "BOOTPROTO=none\n" "DEVICETYPE=ovs\n" "TYPE=OVSBridge" msgstr "" #. Tag: programlisting #, no-c-format msgid "vi /etc/sysconfig/network-scripts/ifcfg-cloudbr1" msgstr "" #. Tag: programlisting #, no-c-format msgid "DEVICE=cloudbr1\n" "ONBOOT=yes\n" "HOTPLUG=no\n" "BOOTPROTO=none\n" "TYPE=OVSBridge\n" "DEVICETYPE=ovs" msgstr "" #. Tag: para #, no-c-format msgid "With this configuration you should be able to restart the network, although a reboot is recommended to see if everything works properly." msgstr "" #. Tag: para #, no-c-format msgid "Make sure you have an alternative way like IPMI or ILO to reach the machine in case you made a configuration error and the network stops functioning!" msgstr ""