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一、环境：
宿主机：mac os 10.10
虚拟机：virtualbox 4.3.20
虚拟机操作系统：CentOS7-1406
Openvswitch 2.3.0
二、安装
1、安装依赖包：yum -y install openssl-devel wget kernel-devel
2、安装开发工具：yum groupinstall “Development Tools”
3、添加用户：adduser ovswitch，切换用户并跳转至用户文件夹：su – ovswitch
4、下载源码：wget http://openvswitch.org/releases/openvswitch-2.3.0.tar.gz
5、解压：tar xfz openvswitch-2.3.0.tar.gz
6、创建编译目录：mkdir -p ~/rpmbuild/SOURCES
7、从 spec 文件中删除 openvswitch-kmod 的依赖包，并创建一个新的 spec 文件：
sed ‘s/openvswitch-kmod, //g’ openvswitch-2.3.0/rhel/openvswitch.spec > openvswitch-2.3.0/rhel/openvswitch_no_kmod.spec
8、开始编译：rpmbuild -bb –without check ~/openvswitch-2.3.0/rhel/openvswitch_no_kmod.spec
可能出现以下错误：
error: File /home/ovswitch/rpmbuild/SOURCES/openvswitch-2.3.0.tar.gz: No such file or directory
解决办法：cp openvswitch-2.3.0.tar.gz rpmbuild/SOURCES
9、退出当前用户使用 root：exit
10、安装编译生成的 rpm 文件：
yum localinstall /home/ovswitch/rpmbuild/RPMS/x86_64/openvswitch-2.3.0-1.x86_64.rpm
11、启动服务：systemctl start openvswitch.service
12、查看服务状态：systemctl -l status openvswitch.service
可能出现以下错误：
openvswitch.service – LSB: Open vSwitch switch
Loaded: loaded (/etc/rc.d/init.d/openvswitch)
Active: activating (start) since 四 2014-12-04 18:35:32 CST; 1min 30s ago
Control: 13694 (openvswitch)
CGroup: /system.slice/openvswitch.service
├─13694 /bin/sh /etc/rc.d/init.d/openvswitch start
├─13696 /bin/sh /usr/share/openvswitch/scripts/ovs-ctl start –system-id=random
├─13697 tee -a /var/log/openvswitch/ovs-ctl.log
├─13723 ovs-vswitchd unix:/var/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info –mlockall –no-chdir –log-file=/var/log/openvswitch/ovs-vswitchd.log –pidfile=/var/run/openvswitch/ovs-vswitchd.pid –detach –monitor
├─13724 ovs-vswitchd unix:/var/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info –mlockall –no-chdir –log-file=/var/log/openvswitch/ovs-vswitchd.log –pidfile=/var/run/openvswitch/ovs-vswitchd.pid –detach –monitor
└─13725 ovs-vswitchd unix:/var/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info –mlockall –no-chdir –log-file=/var/log/openvswitch/ovs-vswitchd.log –pidfile=/var/run/openvswitch/ovs-vswitchd.pid –detach –monitor
12 月 04 18:35:33 localhost.localdomain openvswitch[13694]: /etc/openvswitch/conf.db does not exist … (warning).
12 月 04 18:35:33 localhost.localdomain openvswitch[13694]: Creating empty database /etc/openvswitch/conf.db ovsdb-tool: I/O error: /etc/openvswitch/conf.db: failed to lock lockfile (Resource temporarily unavailable)
12 月 04 18:35:33 localhost.localdomain openvswitch[13694]: [FAILED]
12 月 04 18:35:33 localhost.localdomain openvswitch[13694]: Inserting openvswitch module [OK]
解决办法 ：
yum install policycoreutils-python.x86_64 0:2.2.5-11.el7
mkdir /etc/openvswitch
semanage fcontext -a -t openvswitch_rw_t “/etc/openvswitch(/.*)?”
restorecon -Rv /etc/openvswitch
再次使用 :
systemctl stop openvswitch.service
systemctl start openvswitch.service
再次查看服务状态：systemctl -l status openvswitch.service
openvswitch.service – LSB: Open vSwitch switch
Loaded: loaded (/etc/rc.d/init.d/openvswitch)
Active: active (running) since 四 2014-12-04 18:38:52 CST; 6s ago
Process: 13741 ExecStart=/etc/rc.d/init.d/openvswitch start (code=exited, status=0/SUCCESS)
CGroup: /system.slice/openvswitch.service
├─13724 ovs-vswitchd: monitoring pid 13725 (healthy)
├─13725 ovs-vswitchd unix:/var/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info –mlockall –no-chdir –log-file=/var/log/openvswitch/ovs-vswitchd.log –pidfile=/var/run/openvswitch/ovs-vswitchd.pid –detach –monitor
├─13764 ovsdb-server: monitoring pid 13765 (healthy)
└─13765 ovsdb-server /etc/openvswitch/conf.db -vconsole:emer -vsyslog:err -vfile:info –remote=punix:/var/run/openvswitch/db.sock –private-key=db:Open_vSwitch,SSL,private_key –certificate=db:Open_vSwitch,SSL,certificate –bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert –no-chdir –log-file=/var/log/openvswitch/ovsdb-server.log –pidfile=/var/run/openvswitch/ovsdb-server.pid –detach –monitor
12 月 04 18:38:51 localhost.localdomain systemd[1]: Starting LSB: Open vSwitch switch…
12 月 04 18:38:51 localhost.localdomain openvswitch[13741]: /etc/openvswitch/conf.db does not exist … (warning).
12 月 04 18:38:51 localhost.localdomain openvswitch[13741]: Creating empty database /etc/openvswitch/conf.db [OK]
12 月 04 18:38:52 localhost.localdomain openvswitch[13741]: Starting ovsdb-server [OK]
12 月 04 18:38:52 localhost.localdomain openvswitch[13741]: Configuring Open vSwitch system IDs [OK]
12 月 04 18:38:52 localhost.localdomain openvswitch[13741]: ovs-vswitchd is already running.
12 月 04 18:38:52 localhost.localdomain openvswitch[13741]: Enabling remote OVSDB managers [OK]
12 月 04 18:38:52 localhost.localdomain systemd[1]: Started LSB: Open vSwitch switch.
12 月 04 18:38:52 localhost.localdomain openvswitch[13694]: Starting ovs-vswitchd [OK]
12 月 04 18:38:52 localhost.localdomain openvswitch[13694]: Enabling remote OVSDB managers [OK]
安装完成。
OpenvSwitch 中端口的抽象层次结构 http://www.linuxidc.com/Linux/2014-09/106760.htm
OpenvSwitch 2.1.2 安装完成后 启动 与 停止 shell 脚本 http://www.linuxidc.com/Linux/2014-09/106284.htm
更多 CentOS 相关信息见 CentOS 专题页面 http://www.linuxidc.com/topicnews.aspx?tid=14
