<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Pzhang的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Kgong</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Kgong]]></copyright><item><title><![CDATA[ospf 案例]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/132140729</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/132140729</guid><author>Kgong</author><pubDate>Mon, 07 Aug 2023 12:54:30 +0800</pubDate><description><![CDATA[S1 abr（area board router）OSPF 配置。]]></description><category></category></item><item><title><![CDATA[不同 vlan 之间互通]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/132030272</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/132030272</guid><author>Kgong</author><pubDate>Thu, 03 Aug 2023 13:03:25 +0800</pubDate><description><![CDATA[如果是不同网段用户，常用的技术为：vlanif 和 单臂路由都可以解决不同 vlan 之间三层包互通问题。]]></description><category></category></item><item><title><![CDATA[基于各种方式划分 vlan]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/132029557</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/132029557</guid><author>Kgong</author><pubDate>Wed, 02 Aug 2023 22:53:56 +0800</pubDate><description><![CDATA[划分VLAN的方式有：基于接口、基于MAC地址、基于IP子网、基于协议、基于策略（MAC地址、IP地址、接口）。]]></description><category></category></item><item><title><![CDATA[冲突域 和 广播域]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/132032293</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/132032293</guid><author>Kgong</author><pubDate>Wed, 02 Aug 2023 15:10:11 +0800</pubDate><description><![CDATA[在传统的以粗同轴电缆为传输介质的以太网中，同一介质上的多个节点共享链路的带宽，争用链路的使用权，这样就会发生冲突，CSMA/CD机制中当冲突发生时，网络就要进行回退，这段回退的时间内链路上不传送任何数据。而且这种情况是不可避免的。同一介质上的节点越多，冲突发生的概率越大。这种连接在同一导线上的所有节点的集合就是一个冲突域。冲突域内所有节点竞争同一带宽，一个节点发出的报文（无论是单播、组播、广播）其余节点都可以收到。冲突域一般发生在（设备同一个时间只准发送或者接受数据）的。]]></description><category></category></item><item><title><![CDATA[vlan access, trunk, hybrid (tagged/untagged) 笔记]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/132023048</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/132023048</guid><author>Kgong</author><pubDate>Mon, 31 Jul 2023 17:32:24 +0800</pubDate><description><![CDATA[默认情况下，很多设备 PVID 为 1。PVID 在 trunk 和 hybrid 情况下，并不是默认就可以允许通过 port 的。]]></description><category></category></item><item><title><![CDATA[子网重叠测试]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/131989361</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/131989361</guid><author>Kgong</author><pubDate>Fri, 28 Jul 2023 23:30:19 +0800</pubDate><description><![CDATA[根据 R1 这条 routing table 中的第一个条目，配置 dst IP 是同一个子网。因为是直连的情况，所以 nexthop 直接发送。R2 回包也是同理。]]></description><category></category></item><item><title><![CDATA[有类型地址]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/131957046</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/131957046</guid><author>Kgong</author><pubDate>Thu, 27 Jul 2023 15:29:00 +0800</pubDate><description><![CDATA[子网号：基于网络号上划分。A，B，C，D，E 类地址开头不同，是为了让网络不重叠。]]></description><category></category></item><item><title><![CDATA[vlan 绑定端口号]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/131949489</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/131949489</guid><author>Kgong</author><pubDate>Thu, 27 Jul 2023 11:14:47 +0800</pubDate><description><![CDATA[【代码】vlan 绑定端口号。]]></description><category></category></item><item><title><![CDATA[使用 Openssl 备忘录]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/129475593</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/129475593</guid><author>Kgong</author><pubDate>Sun, 12 Mar 2023 16:41:47 +0800</pubDate><description><![CDATA[Openssl 命令使用]]></description><category></category></item><item><title><![CDATA[安装 K8S, Bigip, Gateway API 测试环境 (2)]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/129358126</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/129358126</guid><author>Kgong</author><pubDate>Mon, 06 Mar 2023 12:42:27 +0800</pubDate><description><![CDATA[k8s flannel vxlan network 添加 bigip node。]]></description><category></category></item><item><title><![CDATA[安装 K8S, Bigip, Gateway API 测试环境 (1)]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/129056991</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/129056991</guid><author>Kgong</author><pubDate>Sat, 25 Feb 2023 15:00:58 +0800</pubDate><description><![CDATA[使用 kubeadm 搭建 k8s 和 bigip 测试环境]]></description><category></category></item><item><title><![CDATA[【无标题】]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/123431285</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/123431285</guid><author>Kgong</author><pubDate>Fri, 11 Mar 2022 18:27:22 +0800</pubDate><description><![CDATA[How to Fix Failed to download metadata for repo ‘appstream’: Cannot prepare internal mirrorlist: No URLs in mirrorlist Error?
How to Fix Failed to download metadata for repo ‘appstream’: Cannot prepare internal mirrorlist: No URLs in mirrorlist Error?

To ]]></description><category></category></item><item><title><![CDATA[vim, go, vim-go 安装（CentOS7）]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/108478577</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/108478577</guid><author>Kgong</author><pubDate>Tue, 08 Sep 2020 22:49:20 +0800</pubDate><description><![CDATA[vim, go, vim-go 源码安装（CentOS7）
安装 vim
安装一些必要的包
yum install -y gcc make ncurses ncurses-devel

安装一些其他包
yum install -y ctags git python python-devel

删除系统上已经存在的 Vim 包
rpm -aq | grep vim | xargs yum remove -y

从 github 上下载安装 vim
git clone https://github.com/vi]]></description><category></category></item><item><title><![CDATA[什么是NUMA]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/106343050</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/106343050</guid><author>Kgong</author><pubDate>Mon, 25 May 2020 21:52:14 +0800</pubDate><description><![CDATA[什么是NUMA
Non-Uniform Memory Access (NUMA) refers to multiprocessor systems whose memory is divided into multiple memory nodes. The access time of a memory node depends on the relative locations of the accessing CPU and the accessed node. (This contrasts wit]]></description><category></category></item><item><title><![CDATA[管理和清理 systemd journal]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/105675500</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/105675500</guid><author>Kgong</author><pubDate>Wed, 22 Apr 2020 22:30:43 +0800</pubDate><description><![CDATA[https://www.linuxuprising.com/2019/10/how-to-clean-up-systemd-journal-logs.html

]]></description><category></category></item><item><title><![CDATA[使用 Kolla 安装 F5 Lbaasv2 agent (Stein)]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/105579683</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/105579683</guid><author>Kgong</author><pubDate>Fri, 17 Apr 2020 15:17:16 +0800</pubDate><description><![CDATA[使用 Kolla 安装 F5 Lbaasv2 agent (Stein)
文章目录使用 Kolla 安装 F5 Lbaasv2 agent (Stein)环境创建和准备工作安装 virutalenv，ansible下载安装 Kolla-ansible, KollaAnsible 配置F5 images 制作修改 /etc/kolla/kolla-build.conf文件F5 server 镜像制作...]]></description><category></category></item><item><title><![CDATA[CentOS vim 8 yum 安装]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/105407626</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/105407626</guid><author>Kgong</author><pubDate>Thu, 09 Apr 2020 12:11:54 +0800</pubDate><description><![CDATA[卸载老的vim
yum remove vim-* -y
下载第三方yum源
wget -P /etc/yum.repos.d/  https://copr.fedorainfracloud.org/coprs/lbiaggi/vim80-ligatures/repo/epel-7/lbiaggi-vim80-ligatures-epel-7.repo
install vim
yum  instal...]]></description><category></category></item><item><title><![CDATA[Elasticsearch ML（Machine Learning） 使用简介]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/105276170</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/105276170</guid><author>Kgong</author><pubDate>Thu, 02 Apr 2020 18:32:17 +0800</pubDate><description><![CDATA[Elasticsearch ML（Machine Learning） 测试
文章目录Elasticsearch ML（Machine Learning） 测试环境准备和配置标准数据源异常数据源创建 Single metric ML 和 Alter触发 Alter创建 Population MLReference
环境准备和配置
标准数据源
首先我们得产生一些有一定规律的标准数据。这里使用我之前写的...]]></description><category></category></item><item><title><![CDATA[ELK 开源报警模块 ElastAlert 安装使用]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/105276099</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/105276099</guid><author>Kgong</author><pubDate>Thu, 02 Apr 2020 18:17:46 +0800</pubDate><description><![CDATA[ElastAlert
安装
CentOS 上安装 ElastAlert
# 安装 pip
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py

# 安装 setuptools
pip install "setuptools&gt;=11.3"

# 安装 gcc
yum install gcc -y

...]]></description><category></category></item><item><title><![CDATA[EFK 监控 F5 BigIP 流量测试]]></title><link>https://blog.youkuaiyun.com/Kgong/article/details/105276057</link><guid>https://blog.youkuaiyun.com/Kgong/article/details/105276057</guid><author>Kgong</author><pubDate>Thu, 02 Apr 2020 18:14:36 +0800</pubDate><description><![CDATA[EFK 监控 F5 BigIP 流量测试
EFK 测试环境搭建
F5 BigIP 测试环境搭建
数据源测试脚本
这里使用 Python 发送多个异步 http get requests。
[root@asm-replay network-tester]# cat http-test.py
import eventlet
eventlet.monkey_patch()

import request...]]></description><category></category></item></channel></rss>