<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[w0823m的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/w0823m</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; w0823m]]></copyright><item><title><![CDATA[java中：LinkedList中clear()方法清空内容及引用]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/84574295</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/84574295</guid><author>w0823m</author><pubDate>Tue, 27 Nov 2018 21:51:21 +0800</pubDate><description><![CDATA[package com.wm.ztest;

import java.util.LinkedHashMap;
import java.util.LinkedList;

public class LinkedListClearTest {
    @SuppressWarnings(&quot;unchecked&quot;)
    public static void main(String[] args) {
...]]></description><category></category></item><item><title><![CDATA[Check of pool cinder-volumes/cinder-volumes-pool failed (status:2). Manual repair required!]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/78831506</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/78831506</guid><author>w0823m</author><pubDate>Mon, 18 Dec 2017 11:49:50 +0800</pubDate><description><![CDATA[OpenStack安装cinder组件之后，报错
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------]]></description><category></category></item><item><title><![CDATA[Ubuntu16.04禁用ipv6]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/78657788</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/78657788</guid><author>w0823m</author><pubDate>Tue, 28 Nov 2017 18:15:17 +0800</pubDate><description><![CDATA[cat /proc/sys/net/ipv6/conf/eno2/disable_ipv6




显示0说明ipv6开启，1说明关闭





在 /etc/sysctl.conf 增加下面一行，并重启。

 

net.ipv6.conf.eno2.disable_ipv6 = 1




sudo sysctl -p]]></description><category></category></item><item><title><![CDATA[OpenStack 配置 Dashboard 仪表盘服务(Controller Node)]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/78604436</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/78604436</guid><author>w0823m</author><pubDate>Wed, 22 Nov 2017 15:45:51 +0800</pubDate><description><![CDATA[1.配置Dashboard


apt
 install openstack-dashboard

vim /etc/openstack-dashboard/local_settings.py

----------------------------------------------------------------------------------------------]]></description><category></category></item><item><title><![CDATA[Ubuntu更换清华源]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/78544688</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/78544688</guid><author>w0823m</author><pubDate>Wed, 15 Nov 2017 20:30:23 +0800</pubDate><description><![CDATA[sudo vim /etc/apt/sources.list
在链接自行查找即可
https://mirrors.tuna.tsinghua.edu.cn/help/ubuntu/]]></description><category></category></item><item><title><![CDATA[Ubuntu绑定静态ip]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/78544622</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/78544622</guid><author>w0823m</author><pubDate>Wed, 15 Nov 2017 20:25:51 +0800</pubDate><description><![CDATA[sudo vim /etc/network/interfaces


sudo /etc/init.d/networking restart]]></description><category></category></item><item><title><![CDATA[ubuntu启动、重启、关闭apache服务]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/74559780</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/74559780</guid><author>w0823m</author><pubDate>Thu, 06 Jul 2017 15:53:03 +0800</pubDate><description><![CDATA[Start Apache 2 Server /启动apache服务
$ sudo /etc/init.d/apache2 start


Restart Apache 2 Server /重启apache服务
$ sudo /etc/init.d/apache2 restart


Stop Apache 2 Server /停止apache服务
$ sudo /etc/init]]></description><category></category></item><item><title><![CDATA[ECOMP白皮书]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/72669081</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/72669081</guid><author>w0823m</author><pubDate>Tue, 23 May 2017 22:52:23 +0800</pubDate><description><![CDATA[前言：


ECOMP (Enhanced Control, Orchestration, Management & Policy) Architecture White Paper，是 AT&T 前不久发布的白皮书，读者可以在https://www.sdxcentral.com/articles/news/ecomp-one-big-happy-family-open-source-gro]]></description><category></category></item><item><title><![CDATA[Openvswitch手册: QoS]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71711481</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71711481</guid><author>w0823m</author><pubDate>Fri, 12 May 2017 10:48:45 +0800</pubDate><description><![CDATA[这一节我们看QoS，Qos的设置往往是和flow中的policy一起使用的

Open vSwitch QoS capabilities

1 Interface rate limiting2 Port QoS policy

QoS: Interface rate limiting

A rate and burst can be assigned to an Interface]]></description><category></category></item><item><title><![CDATA[用python文件创建mininet拓扑]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71703101</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71703101</guid><author>w0823m</author><pubDate>Fri, 12 May 2017 09:13:44 +0800</pubDate><description><![CDATA[topo.py



import os

def mininet():

    print "start"

    MN_CLI = "sudo mn --custom /home/ubuntu/sdn/mininet/mininet/custom/mytopo.py --topo mytopo --mac --controller=remote,ip=115.159.2]]></description><category></category></item><item><title><![CDATA[一些常用的指令mininet & sflow & floodlight qos]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71642704</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71642704</guid><author>w0823m</author><pubDate>Thu, 11 May 2017 17:22:01 +0800</pubDate><description><![CDATA[1、mininet
//四个switch，四个host，每个switch链接一个host
sudo mn --topo linear,4 --switch ovsk --controller=remote,ip=127.0.0.1 --ipbase=10.0.0.0/8
//默认topo，一个switch，两个host
sudo mn --switch ovsk --controller=]]></description><category></category></item><item><title><![CDATA[mininet下sflow监控流量]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71641672</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71641672</guid><author>w0823m</author><pubDate>Thu, 11 May 2017 17:01:50 +0800</pubDate><description><![CDATA[准备条件：
1、mininet搭建：http://blog.youkuaiyun.com/w0823m/article/details/71374697
2、sflow搭建：http://blog.youkuaiyun.com/w0823m/article/details/71600580
开始：
1、搭建拓扑
mininet搭建在本机环境下，所以建立拓扑可以用如下命令：
sudo mn --switch o]]></description><category></category></item><item><title><![CDATA[sFlow-rt安装部署]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71600580</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71600580</guid><author>w0823m</author><pubDate>Thu, 11 May 2017 09:38:24 +0800</pubDate><description><![CDATA[sFlow技术是一种以设备端口为基本单元的数据流随机采样的流量监控技术，不仅可以提供完整的第二层到第四层甚至全网范围内的实时流量信息，而且可以适应超大网络流量(如大于10Gbit/s)环境下的流量分析，让用户详细、实时地分析网络传输流的性能、趋势和存在的问题。sFlow监控工具由sFlow Agent和sFlow Collector两部分组成。Agent作为客户端，一般内嵌于网络转发设备（如交换机]]></description><category></category></item><item><title><![CDATA[Mininet使用源码安装]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71374697</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71374697</guid><author>w0823m</author><pubDate>Sun, 07 May 2017 21:55:53 +0800</pubDate><description><![CDATA[1 实验目的

掌握Mininet使用源码安装的方法。

2 实验原理

Mininet 是一个轻量级软件定义网络和测试平台；它采用轻量级的虚拟化技术使一个单一的系统看起来像一个完整的网络运行相关的内核系统和用户代码，也可简单理解为 SDN 网络系统中的一种基于进程虚拟化平台，它支持 OpenFlow、OpenvSwith 等各种协议，Mininet 也可以模拟一个完整的网络主机、链接]]></description><category></category></item><item><title><![CDATA[ovs-ofctl一些操作]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71320318</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71320318</guid><author>w0823m</author><pubDate>Sun, 07 May 2017 13:08:51 +0800</pubDate><description><![CDATA[1. 显示bridge的信息，连接到bridge上的interface,tap和端口号(port)
ovs-ofctl show ovs-switch (ovs-switch代表bridge的名字，也就是虚拟的switch，下同)

2. 显示flow entries
ovs-ofctl dump-flows ovs-switch

3. 添加flow
ovs-ofctl add-f]]></description><category></category></item><item><title><![CDATA[How to implement Quality Of Service using Floodlight]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71320192</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71320192</guid><author>w0823m</author><pubDate>Sun, 07 May 2017 13:04:05 +0800</pubDate><description><![CDATA[https://floodlight.atlassian.net/wiki/display/floodlightcontroller/How+to+implement+Quality+Of+Service+using+Floodlight]]></description><category></category></item><item><title><![CDATA[Mininet南向接口添加，删除流表操作]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71320105</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71320105</guid><author>w0823m</author><pubDate>Sun, 07 May 2017 13:01:47 +0800</pubDate><description><![CDATA[实验拓扑：



1.按下输入命令，构建以上拓扑




[plain] view
 plain copy


 



mn --topo single,3 --mac --switch ovsk --controller remote  

如下图，创建了host：h2，h3，h4；Switch：s1；Controller：c0 （127.0.0.1:66]]></description><category></category></item><item><title><![CDATA[Floodlight Static Flow Pusher API]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71319973</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71319973</guid><author>w0823m</author><pubDate>Sun, 07 May 2017 12:58:52 +0800</pubDate><description><![CDATA[什么是 Static Flow Pusher?

Static Flow Pusher 是一个 Floodlight 模块，使用的是REST API接口,允许用户在OpenFlow 网络中插入流表 。




主动式和反应式流插入

OpenFlow 支持两种流表插入: 主动式和反应式。当数据包抵达OpenFlow交换机，而交换机没有该包对应的匹配流表时，反应时流表插入起作用。该]]></description><category></category></item><item><title><![CDATA[Floodlight用StaticFlowPusher操作流表]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71319947</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71319947</guid><author>w0823m</author><pubDate>Sun, 07 May 2017 12:57:36 +0800</pubDate><description><![CDATA[实验拓扑：



1.登录mininet




[plain] view
 plain copy


 



sudo ssh -x openflow@openflow  



2.启动floodlight
写一个把启动floodlight小脚本，用shell来运行




[plain] view
 plain copy


 ]]></description><category></category></item><item><title><![CDATA[Floodlight Mininet自定义拓扑及流表]]></title><link>https://blog.youkuaiyun.com/w0823m/article/details/71319919</link><guid>https://blog.youkuaiyun.com/w0823m/article/details/71319919</guid><author>w0823m</author><pubDate>Sun, 07 May 2017 12:55:45 +0800</pubDate><description><![CDATA[实验拓扑：


目的：（1）自定义构建以上拓扑
   （2）实现h1,h2能通信，h3,h4不能通信，h1，h2与h3，h4之间能相互通信


基本操作这里就不仔细介绍了，可以参考之前的两篇文。
1.构建拓扑，用Python实现以上自定义拓扑
代码：




[python] view
 plain copy


 



from mininet.to]]></description><category></category></item></channel></rss>