找不到所需的可执行ovscontroller:Minin

Question

sudo python Topology.py 
N = 6
*** Creating network
*** Adding controller
*** Adding hosts:
a b c d e u 
*** Adding switches:
s1 s2 
*** Adding links:
(5.00Mbit 3ms delay 2% loss) *** Error: RTNETLINK answers: No such file or directory
(5.00Mbit 3ms delay 2% loss) *** Error: RTNETLINK answers: No such file or directory
(a, s1) (5.00Mbit 3ms delay 2% loss) *** Error: RTNETLINK answers: No such file or directory
(5.00Mbit 3ms delay 2% loss) *** Error: RTNETLINK answers: No such file or directory
(b, s1) (5.00Mbit 3ms delay 2% loss) *** Error: RTNETLINK answers: No such file or directory
(5.00Mbit 3ms delay 2% loss) *** Error: RTNETLINK answers: No such file or directory
(c, s2) (5.00Mbit 3ms delay 2% loss) *** Error: RTNETLINK answers: No such file or directory
(5.00Mbit 3ms delay 2% loss) *** Error: RTNETLINK answers: No such file or directory
(d, s2) (5.00Mbit 3ms delay 2% loss) *** Error: RTNETLINK answers: No such file or directory
(5.00Mbit 3ms delay 2% loss) *** Error: RTNETLINK answers: No such file or directory
(e, s1) Traceback (most recent call last):
  File "Topology.py", line 45, in <module>
    perfTest()
  File "Topology.py", line 33, in perfTest
    net = Mininet(topo=topo,host=CPULimitedHost,link=TCLink,controller=OVSController)
  File "/usr/lib/python2.7/dist-packages/mininet/net.py", line 172, in __init__
    self.build()
  File "/usr/lib/python2.7/dist-packages/mininet/net.py", line 442, in build
    self.buildFromTopo( self.topo )
  File "/usr/lib/python2.7/dist-packages/mininet/net.py", line 429, in buildFromTopo
    self.addLink( **params )
  File "/usr/lib/python2.7/dist-packages/mininet/net.py", line 364, in addLink
    link = cls( node1, node2, **options )
  File "/usr/lib/python2.7/dist-packages/mininet/link.py", line 534, in __init__
    params2=params )
  File "/usr/lib/python2.7/dist-packages/mininet/link.py", line 424, in __init__
    node1, node2, deleteIntfs=False )
  File "/usr/lib/python2.7/dist-packages/mininet/link.py", line 468, in makeIntfPair
    deleteIntfs=deleteIntfs )
  File "/usr/lib/python2.7/dist-packages/mininet/util.py", line 194, in makeIntfPair
    ( intf1, intf2, cmdOutput ) )
Exception: Error creating interface pair (s1-eth4,s2-eth4): RTNETLINK answers: File exists

这是我运行python程序实现mininet时得到的错误。 我发现了一个关于相同问题的线索，但没有一个方法对我有效。在

这是我的代码：

^{pr2}$

我正在尝试添加6个主机和2个交换机。这件事还有进展吗？在

与此问题相关的类似线程：Mininet Cannot find required executable controller

尝试过的一切都是上面的线索。没有什么对我有用。在

Answer 1

您的问题取决于单交换机拓扑。在

在通过perfTest调用函数时尝试传递6

class SingleSwitchTopo(Topo):
  "Single switch connected to n hosts."
  def __init__(self, n=2, **opts):
    Topo.__init__(self, **opts)
    switch = self.addSwitch('s1')
    for h in range(n):
      host = self.addHost('h%s' % (h + 1))
      self.addLink(host, switch) 

如果问题仍然存在，请尝试使用pox（pox）之类的控制器配置代码