Mininet系列实验（六）：Mininet动态改变转发规则实验
一、 实验目的
熟悉Mininet自定义拓扑脚本的编写；
熟悉编写POX脚本动态改变转发规则
二、实验原理
在SDN环境中，控制器可以通过对交换机下发流表操作来控制交换机的转发行为。在本实验中，基于Mininet脚本，编写POX脚本，动态改变交换机的转发规则。
三、实验任务
先看一下本次实验的拓扑图：
在该环境下，假设H1 ping H4，初始的路由规则是S1-S2-S5，一秒后，路由转发规则变为S1-S3-S5，再过一秒，规则变为S1-S4-S5，然后再回到最初的转发规则S1-S2-S5。通过这个循环调度的例子动态地改变交换机的转发规则。
1.1在pox文件里面创建脚本lab_controller.py
from pox.core import core
import pox.openflow.libopenflow_01 as of
from pox.lib.util import dpidToStr
from pox.lib.addresses import IPAddr, EthAddr
from pox.lib.packet.arp import arp
from pox.lib.packet.ethernet import ethernet, ETHER_BROADCAST
from pox.lib.packet.packet_base import packet_base
from pox.lib.packet.packet_utils import *
import pox.lib.packet as pkt
from pox.lib.recoco import Timer
import time
log = core.getLogger()
s1_dpid=0
s2_dpid=0
s3_dpid=0
s4_dpid=0
s5_dpid=0
s1_p1=0
s1_p4=0
s1_p5=0
s1_p6=0
s2_p1=0
s3_p1=0
s4_p1=0
pre_s1_p1=0
pre_s1_p4=0
pre_s1_p5=0
pre_s1_p6=0
pre_s2_p1=0
pre_s3_p1=0
pre_s4_p1=0
turn=0
def getTheTime(): #fuction to create a timestamp
flock = time.localtime()
then = "[%s-%s-%s" %(str(flock.tm_year),str(flock.tm_mon),str(flock.tm_mday))
if int(flock.tm_hour)<10:
hrs = "0%s" % (str(flock.tm_hour))
else:
hrs = str(flock.tm_hour)
if int(flock.tm_min)<10:
mins = str(flock.tm_min)
secs = "0%s" % (str(flock.tm_sec))
else:
secs = str(flock.tm_sec)
then +="]%s.%s.%s" % (hrs,mins,secs)
return then
def _timer_func ():
global s1_dpid, s2_dpid, s3_dpid, s4_dpid, s5_dpid,turn
#print getTheTime(), "sent the port stats request to s1_dpid"
if turn==0:
msg = of.ofp_flow_mod()
msg.command=of.OFPFC_MODIFY_STRICT
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_output(port = 5))
core.openflow.getConnection(s1_dpid).send(msg)
turn=1
return
if turn==1:
msg = of.ofp_flow_mod()
msg.command=of.OFPFC_MODIFY_STRICT
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_output(port = 6))
core.openflow.getConnection(s1_dpid).send(msg)
turn=2
return
if turn==2:
msg = of.ofp_flow_mod()
msg.command=of.OFPFC_MODIFY_STRICT
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_output(port = 4))
turn=0
return
def _handle_portstats_received (event):
global s1_p1,s1_p4, s1_p5, s1_p6, s2_p1, s3_p1, s4_p1
global pre_s1_p1,pre_s1_p4, pre_s1_p5, pre_s1_p6, pre_s2_p1, pre_s3_p1, pre_s4_p1
if event.connection.dpid==s1_dpid:
for f in event.stats:
if int(f.port_no)<65534:
if f.port_no==1:
pre_s1_p1=s1_p1
s1_p1=f.rx_packets
if f.port_no==4:
pre_s1_p4=s1_p4
s1_p4=f.tx_packets
#s1_p4=f.tx_bytes
if f.port_no==5:
pre_s1_p5=s1_p5
s1_p5=f.tx_packets
if f.port_no==6:
pre_s1_p6=s1_p6
s1_p6=f.tx_packets
for f in event.stats:
if int(f.port_no)<65534:
if f.port_no==1:
pre_s2_p1=s2_p1
s2_p1=f.rx_packets
#s2_p1=f.rx_bytes
if event.connection.dpid==s3_dpid:
for f in event.stats:
if int(f.port_no)<65534:
if f.port_no==1:
pre_s3_p1=s3_p1
s3_p1=f.rx_packets
if event.connection.dpid==s4_dpid:
for f in event.stats:
if int(f.port_no)<65534:
if f.port_no==1:
pre_s4_p1=s4_p1
s4_p1=f.rx_packets
def _handle_ConnectionUp (event):
global s1_dpid, s2_dpid, s3_dpid, s4_dpid, s5_dpid
print "ConnectionUp: ",dpidToStr(event.connection.dpid)
#remember the connection dpid for switch
for m in event.connection.features.ports:
if m.name == "s1-eth1":
s1_dpid = event.connection.dpid
print "s1_dpid=", s1_dpid
elif m.name == "s2-eth1":
s2_dpid = event.connection.dpid
print "s2_dpid=", s2_dpid
elif m.name == "s3-eth1":
s3_dpid = event.connection.dpid
elif m.name == "s4-eth1":
s4_dpid = event.connection.dpid
print "s4_dpid=", s4_dpid
elif m.name == "s5-eth1":
s5_dpid = event.connection.dpid
print "s5_dpid=", s5_dpid
if s1_dpid<>0 and s2_dpid<>0 and s3_dpid<>0 and s4_dpid<>0:
Timer(1, _timer_func, recurring=True)
def _handle_PacketIn(event):
global s1_dpid, s2_dpid, s3_dpid, s4_dpid, s5_dpid
packet=event.parsed
if event.connection.dpid==s1_dpid:
a=packet.find('arp')
if a and a.protodst=="10.0.0.4":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=4))
event.connection.send(msg)
if a and a.protodst=="10.0.0.5":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=5))
event.connection.send(msg)
if a and a.protodst=="10.0.0.6":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=6))
event.connection.send(msg)
if a and a.protodst=="10.0.0.1":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=1))
event.connection.send(msg)
if a and a.protodst=="10.0.0.2":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=2))
event.connection.send(msg)
if a and a.protodst=="10.0.0.3":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=3))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.1"
msg.actions.append(of.ofp_action_output(port = 1))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.2"
msg.actions.append(of.ofp_action_output(port = 2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.3"
msg.actions.append(of.ofp_action_output(port = 3))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 1
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_output(port = 4))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.5"
msg.actions.append(of.ofp_action_output(port = 5))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.6"
msg.actions.append(of.ofp_action_output(port = 6))
event.connection.send(msg)
elif event.connection.dpid==s2_dpid:
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 1
msg.match.dl_type=0x0806
msg.actions.append(of.ofp_action_output(port = 2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 1
msg.match.dl_type=0x0800
msg.actions.append(of.ofp_action_output(port = 2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 2
msg.match.dl_type=0x0806
msg.actions.append(of.ofp_action_output(port = 1))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 2
msg.match.dl_type=0x0800
msg.actions.append(of.ofp_action_output(port = 1))
event.connection.send(msg)
elif event.connection.dpid==s3_dpid:
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 1
msg.match.dl_type=0x0806
msg.actions.append(of.ofp_action_output(port = 2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 1
msg.match.dl_type=0x0800
msg.actions.append(of.ofp_action_output(port = 2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 2
msg.match.dl_type=0x0806
msg.actions.append(of.ofp_action_output(port = 1))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 2
msg.match.dl_type=0x0800
msg.actions.append(of.ofp_action_output(port = 1))
event.connection.send(msg)
elif event.connection.dpid==s4_dpid:
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 1
msg.match.dl_type=0x0806
msg.actions.append(of.ofp_action_output(port = 2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 1
msg.match.dl_type=0x0800
msg.actions.append(of.ofp_action_output(port = 2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 2
msg.match.dl_type=0x0806
msg.actions.append(of.ofp_action_output(port = 1))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 2
msg.match.dl_type=0x0800
msg.actions.append(of.ofp_action_output(port = 1))
event.connection.send(msg)
elif event.connection.dpid==s5_dpid:
a=packet.find('arp')
if a and a.protodst=="10.0.0.4":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=4))
event.connection.send(msg)
if a and a.protodst=="10.0.0.5":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=5))
event.connection.send(msg)
if a and a.protodst=="10.0.0.6":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=6))
event.connection.send(msg)
if a and a.protodst=="10.0.0.1":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=1))
event.connection.send(msg)
if a and a.protodst=="10.0.0.2":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=2))
event.connection.send(msg)
if a and a.protodst=="10.0.0.3":
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=3))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.1"
msg.actions.append(of.ofp_action_output(port = 1))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.2"
msg.actions.append(of.ofp_action_output(port = 2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.3"
msg.actions.append(of.ofp_action_output(port = 3))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_output(port = 4))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.5"
msg.actions.append(of.ofp_action_output(port = 5))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.6"
msg.actions.append(of.ofp_action_output(port = 6))
event.connection.send(msg)
def launch ():
global start_time
core.openflow.addListenerByName("PortStatsReceived",_handle_portstats_received)
core.openflow.addListenerByName("ConnectionUp", _handle_ConnectionUp)
core.openflow.addListenerByName("PacketIn",_handle_PacketIn)
1.2查看流表项（做完步骤2再回来）
./pox.py lab_controller web messenger messenger.log_service messenger.ajax_transport openflow.of_service poxdesk
然后再火狐里面搜索：http://pox-ip:8000/poxdesk然后点击TableViewer选择s1即00-00-00-00-01就会跳出下图（其中深蓝色的交换机的output的端口就是在5，6的切换，时而还会出现不存在（个人是这认为ox脚本的bug）说明了只有两种切换方式，而另一种（连向4的）不通，说明了网络运行的时候在s1的OUTPUT：4处出现了问题，这个待我日后分析lab_controller.py再说吧。
2.1在mininet文件夹里面创建脚本文件rulemininet.py
#!/usr/bin/python
# coding:utf -8
from mininet.topo import Topo
from mininet.net import Mininet
from mininet.node import CPULimitedHost
from mininet.link import TCLink
from mininet.util import dumpNodeConnections
from mininet.log import setLogLevel
from mininet.node import Controller
from mininet.cli import CLI
from functools import partial
from mininet.node import RemoteController
import os
# 创建一个基于拓扑类的MyTopo类使得多交换机连接多个主机和交换机的复杂拓扑
class MyTopo(Topo):
"Single switch connected to n hosts."
# 构造函数创建5个交换机和6个主机
def __init__(self):
Topo.__init__(self)
s1=self.addSwitch('s1')
s2=self.addSwitch('s2')
s3=self.addSwitch('s3')
s4=self.addSwitch('s4')
s5=self.addSwitch('s5')
h1=self.addHost('h1')
h2=self.addHost('h2')
h3=self.addHost('h3')
h4=self.addHost('h4')
h5=self.addHost('h5')
h6=self.addHost('h6')
# 主机1，2，3连接s1
self.addLink(h1, s1, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
self.addLink(h2, s1, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
self.addLink(h3, s1, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
# 交换机2，3，4连接s1,所以说s1有6个接口
self.addLink(s1, s2, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
self.addLink(s1, s3, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
self.addLink(s1, s4, bw=1, delay='10ms', loss=0, max_queue_size=1000，use_htb=True)
# 交换机2，3，4连接s5,所以说s5也有6个接口，2，3，4各两个
self.addLink(s2, s5, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
self.addLink(s3, s5, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
self.addLink(s4, s5, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
# 主机4，5，6连接s5
self.addLink(s5, h4, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
self.addLink(s5, h5, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
self.addLink(s5, h6, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
def perfTest():
# 创建网络并运行简单性能测试
topo = MyTopo()
net = Mininet(topo=topo, host=CPULimitedHost, link=TCLink, controller=partial(RemoteController, ip='10.0.0.13', port=6633))
net.start()
print "Dumping host connections"
dumpNodeConnections(net.hosts)
h1,h2,h3=net.get('h1','h2','h3')
h4,h5,h6=net.get('h4','h5','h6')
h1.setMAC("0:0:0:0:0:1")
h2.setMAC("0:0:0:0:0:2")
h3.setMAC("0:0:0:0:0:3")
h4.setMAC("0:0:0:0:0:4")
h5.setMAC("0:0:0:0:0:5")
h6.setMAC("0:0:0:0:0:6")
CLI(net)
net.stop()
if __name__ == '__main__':
setLogLevel('info')
perfTest()
2.2 先打开脚本文件lab_controller.py然后打开rulemininet.py ,分别用两个程序
cd pox ./pox.py lab_controller cd mininet ./rulemininet.py h1 ping -i 0.1 h4
rulemininet.py脚本的显示情况：
然而，pox理论上应当显示的是：
而我的是。。
所以这应当是pox的脚本问题，于是我才使用查看流表项的方式来分析。
总结：
1.学会了使用查看流表项
2.理解这个动态拓扑的原理
Mininet系列实验（六）：Mininet动态改变转发规则实验的更多相关文章
- mininet实验 动态改变转发规则实验
写在前面 本实验参考 POX脚本设置好控制器的转发策略,所以只要理解脚本. mininet脚本设置好拓扑和相关信息,所以也只要理解脚本. POX脚本目前基本看不懂. 本实验我学会了:POX控制器Web ...
- Mininet实验 动态改变转发规则
介绍 拓扑如下: 在该环境下,假设H1 ping H4,初始的路由规则是S1-S2-S5,一秒后,路由转发规则变为S1-S3-S5,再过一秒,规则变为S1-S4-S5,然后再回到最初的转发规则S1-S ...
- Mininet 系列实验（六）
写在前面 这次实验遇到了非常多问题,非常非常多,花了很多时间去解决,还是有一些小问题没有解决,但是基本上能完成实验.建议先看完全文再开始做实验. 实验内容 先看一下本次实验的拓扑图: 在该环境下,假设 ...
- SSH的本地、远程、动态端口转发实验笔记
SSH端口转发 SSH 会自动加密和解密所有 SSH 客户端与服务端之间的网络数据.但是,SSH 还能够将其他 TCP 端口的网络数据通过 SSH 链接来转发,并且自动提供了相应的加密及解密服务.这一 ...
- Mininet 系列实验（四）
实验内容 本次实验拓扑图: 在该环境下,h0 向 h1 发送数据包,由于在 mininet 脚本中设置了连接损耗率,在传输过程中会丢失一些包,本次实验的目的是展示如何通过控制器计算路径损耗速率(h0- ...
- Mininet 系列实验（三）
实验内容 基础 Mininet 可视化界面进行自定义拓扑及拓扑设备自定义设置,实现自定义脚本应用. 参考 Mininet可视化应用 实验环境 虚拟机: Oracle VM VirtualBox Ubu ...
- Mininet 系列实验（一）
关于SDN的第一个实验,似乎实验室里的前辈们也都是从这里开始的. 实验内容 使用源码安装Mininet 参考 Mininet使用源码安装 实验环境 虚拟机:Oracle VM VirtualBox U ...
- Mininet系列实验（五）：Mininet设置带宽之简单性能测试
1.实验目的 该实验通过Mininet学习python自定义拓扑实现,可在python脚本文件中设计任意想要的拓扑,简单方便,并通过设置交换机和主机之间链路的带宽.延迟及丢包率,测试主机之间的性能.在 ...
- Mininet系列实验（二）：Mininet可视化应用
1 实验目的 该实验通过Mininet学习miniedit可视化操作,可直接在界面上编辑任意想要的拓扑,生成python自定义拓扑脚本,简单方便.在实验过程中,可以了解以下方面的知识: Miniedi ...
随机推荐
- webdispatch配置
PRDPISP01:/sapmnt/WIP/profile # su - wipadm PRDPISP01:wipadm 23> cdpro PRDPISP01:wipadm 24> ls ...
- Android NDK 学习之在C中调用Java的变量和静态变量
本博客主要是在Ubuntu 下开发,且默认你已经安装了Eclipse,Android SDK, Android NDK, CDT插件. 在Eclipse中添加配置NDK,路径如下Eclipse-> ...
- 如何使用async和await这对组合设计统一的取Access Token的函数
最近我在使用SAP云平台的机器学习API做和SAP系统的集成,因为SAP Cloud Platform Leonardo上的机器学期API,每次消费时需要传一个Access Token,故在每次实际调 ...
- 解决Apache启动错误：httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
启动apache遇到提示: [root@bqh-119 conf]# ../bin/apachectl -thttpd: apr_sockaddr_info_get() failed for bqh- ...
- xshell退出保持后台服务运行的方法
Linux后台启动了一个服务,但是退出命令终端后或者退出xshell后,服务就关闭了,要想保持后台服务一直启动,可以使用下面的命令来启动服务 #nohup python3.6 /opt/testman ...
- Linux命令——rpm
翻译自:20 Practical Examples of RPM Commands in Linux 国内译文:20个Linux中RPM命令的实际示例 前言 包管理机制——RPM.dpkg rpm本身 ...
- Vue中的DOM操作
1.在要获取的标签中添加 ref="xx" 示例: <button ref="btn">一个按钮</button> 2.在 mounte ...
- 投掷硬币（概率dp）
小Hi有一枚神奇的硬币.已知第i次投掷这枚硬币时,正面向上的概率是Pi. 现在小Hi想知道如果总共投掷N次,其中恰好M次正面向上的概率是多少. Input 第一行包含两个整数N和M. 第二行包含N个实 ...
- Linux下卸载mysql8.x版本
一.停止MySQL [root@localhost /]# service mysqld stop 二.查看当前安装mysql情况,查找以前是否装有mysql [root@localhost /]# ...
- appium 使用name 定位报错 Locator Strategy 'name' is not supported for this session
RF中使用 name定位 报错提示: Locator Strategy 'name' is not supported for this session 解决: 1. 打开本地文件 driver.js ...