Open vSwitch系列之二 安装指定版本ovs

在ovs学习过程中，如果自己想要安装一个ovs交换机其实一条简单的命令 apt  install openvswitch 就可以了，但是这种方法只能安装低版本的ovs。在特殊情况下需要安装指定版本，例如需要下发meters表时需要ovs2.8以上的版本，那么就需要下载安装包手动安装。看似一个复杂的过程，其实也是比较简单的。下面就一起来看看如果手动安装一个指定版本ovs交换机。

准备工作

安装python

[root@localhost ~]# yum -y install python

安装python-pip

如果不安装pip，在下面的过程会报错找不到six模块。

[root@localhost ~]# yum -y install epel*
[root@localhost ~]# yum -y install python-pip 

下载指定版本，可以看到这种安装的好处是你可以指定任何一种版本

http://www.openvswitch.org/download/      #下载地址

[root@localhost ~]# tar xf openvswitch-2.8.1.tar.gz 

生成makefile文件

[root@localhost ~]# cd openvswitch-2.8.1
[root@localhost openvswitch-2.8.1]# yum -y install python-six
[root@localhost openvswitch-2.8.1]# ./configure 

make 编译文件

[root@localhost openvswitch-2.8.1]# make && make install

.检查模块

如果在安装的过程中生成了修改了内核模块，那么重新编译内核。

[root@localhost openvswitch-2.8.1]# make modules_install 
make: 对“modules_install”无需做任何事。

载入模块，载入openvswitch的模块到内核中

[root@localhost openvswitch-2.8.1]# /sbin/modprobe openvswitch

[root@localhost openvswitch-2.8.1]# /sbin/lsmod |grep openvswitch
openvswitch           106996  0 
nf_nat_ipv6            14131  1 openvswitch
nf_defrag_ipv6         35104  2 openvswitch,nf_conntrack_ipv6
nf_nat_ipv4            14115  2 openvswitch,iptable_nat
nf_nat                 26787  4 openvswitch,nf_nat_ipv4,nf_nat_ipv6,nf_nat_masquerade_ipv4
nf_conntrack          133387  9 openvswitch,nf_nat,nf_nat_ipv4,nf_nat_ipv6,xt_conntrack,nf_nat_masquerade_ipv4,nf_conntrack_netlink,nf_conntrack_ipv4,nf_conntrack_ipv6
libcrc32c              12644  4 xfs,openvswitch,nf_nat,nf_conntrack

启动

[root@localhost openvswitch-2.8.1]# export PATH=$PATH:/usr/local/share/openvswitch/scripts
[root@localhost openvswitch-2.8.1]# ovs-ctl start
/usr/local/etc/openvswitch/conf.db does not exist ... (warning).
Creating empty database /usr/local/etc/openvswitch/conf.db [  OK  ]
Starting ovsdb-server [  OK  ]
system ID not configured, please use --system-id ... failed!
Configuring Open vSwitch system IDs [  OK  ]
Starting ovs-vswitchd [  OK  ]
Enabling remote OVSDB managers [  OK  ]

启动ovsdb-server服务

[root@localhost openvswitch-2.8.1]# export PATH=$PATH:/usr/local/share/openvswitch/scripts
[root@localhost openvswitch-2.8.1]# ovs-ctl --no-ovs-vswitchd start
ovsdb-server is already running.
Enabling remote OVSDB managers [  OK  ]

启动ovs-vswitchd服务

[root@localhost openvswitch-2.8.1]# export PATH=$PATH:/usr/local/share/openvswitch/scripts
[root@localhost openvswitch-2.8.1]# ovs-ctl --no--ovsdb-server start
/usr/local/share/openvswitch/scripts/ovs-ctl: unknown option "--no--ovsdb-server" (use --help for help)
ovsdb-server is already running.
ovs-vswitchd is already running.
Enabling remote OVSDB managers [  OK  ]

配置ovsdb的数据库 

[root@localhost openvswitch-2.8.1]# mkdir -p /usr/local/etc/openvswitch
[root@localhost openvswitch-2.8.1]# ovs-ctl --no--ovsdb-server start
/usr/local/share/openvswitch/scripts/ovs-ctl: unknown option "--no--ovsdb-server" (use --help for help)
ovsdb-server is already running.
ovs-vswitchd is already running.
Enabling remote OVSDB managers [  OK  ]

配置ovsdb-server以使用上面创建的数据库，监听Unix域套接字

[root@localhost openvswitch-2.8.1]# mkdir -p /usr/local/var/run/openvswitch
[root@localhost openvswitch-2.8.1]# ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock 
> --remote=db:Open_vSwitch,Open_vSwitch,manager_options 
>     --private-key=db:Open_vSwitch,SSL,private_key 
>     --certificate=db:Open_vSwitch,SSL,certificate 
>     --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert 
>     --pidfile --detach --log-file
2019-12-30T12:30:01Z|00001|vlog|INFO|opened log file /usr/local/var/log/openvswitch/ovsdb-server.log
ovsdb-server: /usr/local/var/run/openvswitch/ovsdb-server.pid: already running as pid 45678, aborting

使用ovs-vsctl初始化数据库

[root@localhost openvswitch-2.8.1]# ovs-vsctl --no-wait init
[root@localhost openvswitch-2.8.1]# ovs-vswitchd --pidfile --detach --log-file
2019-12-30T12:31:39Z|00001|vlog|INFO|opened log file /usr/local/var/log/openvswitch/ovs-vswitchd.log
ovs-vswitchd: /usr/local/var/run/openvswitch/ovs-vswitchd.pid: already running as pid 45688, aborting

接下来就可以使用了，使用ovs-vsctl show命令，查看ovs的版本号。

[root@localhost openvswitch-2.8.1]# ovs-vsctl show 
b9da3f20-b407-40fa-8944-df970f4ca3ad
    ovs_version: "2.8.1"