学步园

                                                           Install Openvswitch by rpm binary and source code way on rhe6.3 ( by quqi99 )

作者：张华  发表于：2012-12-30
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( http://blog.csdn.net/quqi99 )

1 Install openvswitch by rpm binary way

 cat /etc/yum.repos.d/base.repo
     [rhel]
    name=rhel
    baseurl=ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/
    enabled=1
    gpgcheck=0

    [centos]
    name=centos
    baseurl=http://mirror.centos.org/centos/6/os/x86_64
    enabled=1
    gpgcheck=0

1) yum install gcc make python-devel openssl-devel kernel-devel kernel-debug-devel tunctl
       2) Install rpm packages
          rpm -ivh http://rchgsa.ibm.com/projects/e/emsol/ccs/build/driver/300/openstack/latest-bld/x86_64/kmod-openvswitch-1.4.2-1.el6.x86_64.rpm
          rpm -ivh http://rchgsa.ibm.com/projects/e/emsol/ccs/build/driver/300/openstack/latest-bld/x86_64/openvswitch-1.4.2-1.x86_64.rpm
          Note: above openvswitch.rpm doesn't include brcompat.ko
       3) restart the service
          service openvswitch restart
       4) add following commands to /etc/rc.local and delete the file /etc/sysconfig/network-scripts/ifcfg-br-ex
        sudo ovs-vsctl add-br br-int
        ifconfig eth1 down
        sudo ovs-vsctl add-br br-ex
        ip add flush eth1
        ifconfig down eth1
        sudo ovs-vsctl add-port br-ex eth1
        ifconfig eth1 promisc up
        ifconfig br-ex 192.168.100.122 netmask 255.255.255.0 broadcast 192.168.100.255
        route add default gw 192.168.100.1 br-ex
        ip addr add 172.16.100.122/24 brd 172.16.100.255 dev br-ex
        echo 'nameserver 9.0.148.50' > /etc/resolv.conf

          Note: it will throw the error "SIOCADDRT: No such process" if use the command "ip addr add 192.168.100.122/24 broadcast 192.168.100.255 dev br-ex"
          to set ip when running the command "route add default gw 192.168.100.1 br-ex"

          Note: we can't use following bridge configuration to set ip for openvswitch bridge
                because in redhat there are no pre-up and pre-down scripts to configure eth1 into promisc mode.
            vi /etc/sysconfig/network-scripts/ifcfg-br-ex
                DEVICE="br-ex"
        NM_CONTROLLED="no"
        ONBOOT="yes"
        TYPE="Ethernet"
        BOOTPROTO=static
        IPADDR=192.168.100.122
        GATEWAY=192.168.100.1
        NETMASK=255.255.255.0
        DNS1=9.0.148.50
       5) cat /etc/hosts
          172.16.100.122  openstack
          [root@openstack ~]# hostname
           openstack

2 Install openvswitch by source code way

  1) yum install gcc make python-devel openssl-devel kernel-devel kernel-debug-devel
       2) wget http://openvswitch.org/releases/openvswitch-1.7.1.tar.gz
          tar xvfz openvswitch-1.7.1.tar.gz
          cd openvswitch-1.7.1
          ./configure --with-linux=/lib/modules/`uname -r`/build

       3) Then fix a bug, edit skbuff.h around line 242 by commenting out the following method
          vi datapath/linux/compat/include/linux/skbuff.h
            241 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,2,0)
        242 //static inline struct page *skb_frag_page(const skb_frag_t *frag)
        243 //{
        244 //      return frag->page;
        245 //}
        246 #endif

       4) make && make install

       5) Now that you got it to build cleanly you need to make sure the linux bridge kernel module is not loaded. /sbin/rmmod bridge
          Then insert the openvswitch.ko kernel module.
          insmod datapath/linux/openvswitch.ko

          insmod datapath/linux/brcompat.ko  ( Note: if you want to use brctl command, need first insmod brcompatd.ko, then run ovs-brcompatd --detach --pidfile )

          If you do not remove the Linux bridge module you will get ths follwoing error.
          [root@openstack openvswitch-1.7.1]# insmod datapath/linux/openvswitch.ko
          insmod: error inserting 'datapath/linux/openvswitch.ko': -1 Invalid module format
      [root@openstack openvswitch-1.7.1]# dmesg |tail
      openvswitch: exports duplicate symbol ovs_dp_ioctl_hook (owned by openvswitch_mod)

        6) Init OVS DB configuration, only one time
           touch /usr/local/etc/ovs-vswitchd.conf
           mkdir -p /usr/local/etc/openvswitch
           ovsdb-tool create /usr/local/etc/openvswitch/conf.db vswitchd/vswitch.ovsschema

        7) start OVS DB
           ovsdb-server /usr/local/etc/openvswitch/conf.db --remote=punix:/usr/local/var/run/openvswitch/db.sock --remote=db:Open_vSwitch,manager_options --private-key=db:SSL,private_key --certificate=db:SSL,certificate --bootstrap-ca-cert=db:SSL,ca_cert --pidfile
--detach --log-file

        8) Init OVS DB data
           ovs-vsctl --no-wait init
       
        9) Start vSwitch daemon
           ovs-vswitchd --pidfile --detach
           ovs-vsctl show

        10) Configure the Open vSwitch Bridge and Network
            ovs agent need a bridge "br-int",
            In addtion, l3 agent need a bridge "br-ex" that will be used to uplink this node running quantum-l3-agent to the external network.
            ovs-vsctl add-br br-int
            ovs-vsctl add-br br-ex
            sudo ifconfig eth1 0
            sudo ovs-vsctl add-port br-ex eth1

            sudo ifconfig br-ex 192.168.100.122 netmask 255.255.255.0  / ip addr add 192.168.100.122/24 dev br-ex
            route add default gw 192.168.100.1 br-ex
            or vi /etc/sysconfig/network-scripts/ifcfg-br-ex
                DEVICE="br-ex"
        NM_CONTROLLED="no"
        ONBOOT="yes"
        TYPE="Ethernet"
        BOOTPROTO=static
        IPADDR=192.168.100.122
        GATEWAY=192.168.100.1
        NETMASK=255.255.255.0

        DNS1=9.0.148.50

        Bellow is a example to use two kvm VMs to set up two openvswitch testing env:

node1:
br-ex  -->  eth0   192.168.100.108
eth1               172.16.100.108
br-int

node2:
eth0               172.16.100.109
br-int

1)  first create two virtual switch in kvm ( Note: must without dhcp )
          default, Forwording to physical device by NAT mode,   192.168.100.0/24  
          vSwitch1, Isolated virtual network,  172.16.100.0/24

2) node1:
        [root@node1 ~]# cat /etc/sysconfig/network-scripts/ifcfg-br-ex
        DEVICE=br-ex
        NM_CONTROLLED=no
        ONBOOT=yes
        DEVICETYPE=ovs
        TYPE=OVSBridge
        BOOTPROTO=static
        IPADDR=192.168.100.108
        GATEWAY=192.168.100.1
        BROADCAST=192.168.100.255
        NETMASK=255.255.255.0
        DNS1=9.0.148.50
        IPV6INIT=no
        [root@node1 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
        DEVICE=eth0
        #HWADDR=52:54:00:8C:04:42
        NM_CONTROLLED=no
        ONBOOT=yes
        DEVICETYPE=ovs
        TYPE=OVSPort
        IPV6INIT=no
        OVS_BRIDGE=br-ex
        [root@node1 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth1
        DEVICE=eth1
        NM_CONTROLLED=no
        ONBOOT=yes
        #DEVICETYPE=eth
        TYPE=Ethernet
        BOOTPROTO=static
        IPADDR=172.16.100.108
        #GATEWAY=172.16.100.108
        BROADCAST=172.16.100.255
        NETMASK=255.255.255.0
        IPV6INIT=no
        [root@node1 ~]# cat /etc/sysconfig/network
        HOSTNAME=node1
        [root@node1 ~]# cat /etc/hosts
        192.168.100.108  pubnode
        172.16.100.108   node1
        172.16.100.109   node2
        [root@node1 ~]# sysctl -w net.ipv4.ip_forward=1
        [root@node1 ~]# route add -net 172.16.100.0 netmask 255.255.255.0 dev eth1
        [root@node1 ~]# route add -net 192.168.100.0 netmask 255.255.255.0 gw 192.168.100.1 dev br-ex
        [root@node1 ~]# iptables -t nat -A POSTROUTING --out-interface br-ex -j MASQUERADE
        [root@node1 ~]# sudo ovs-vsctl add-br br-int

        As for ovs bridge creatation, it equals following scripts:

        sudo ovs-vsctl add-br br-int
        ifconfig eth1 down
        sudo ovs-vsctl add-br br-ex
        ip addr flush eth1
        ifconfig eth1 down
        sudo ovs-vsctl add-port br-ex eth1
        ifconfig eth1 promisc up
        ifconfig br-ex 192.168.100.122 netmask 255.255.255.0 broadcast 192.168.100.255
        route add default gw 192.168.100.1 br-ex
        ip addr add 172.16.100.122/24 brd 172.16.100.255 dev br-ex
        echo 'nameserver 9.0.148.50' > /etc/resolv.conf

3) node2:
        [root@node2 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
        DEVICE=eth0
        NM_CONTROLLED=no
        ONBOOT=yes
        TYPE=Ethernet
        BOOTPROTO=static
        IPADDR=172.16.100.109
        GATEWAY=172.16.100.108
        BROADCAST=172.16.100.255
        NETMASK=255.255.255.0
        DNS1=9.0.148.50
        IPV6INIT=no
        [root@node2 ~]# cat /etc/hosts
        192.168.100.108  pubnode
        172.16.100.108   node1
        172.16.100.109   node2
        [root@node2 ~]# route add default gw 172.16.100.108
        [root@node2 ~]# sudo ovs-vsctl add-br br-int

finnaly, in a work, give a script to automatic install ovs