<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[零下三度]]></title><description><![CDATA[努力，努力，乐观，总结，思考，创新，突破，成就]]></description><link>https://blog.youkuaiyun.com/litianjun2000</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; litianjun2000]]></copyright><item><title><![CDATA[MySQL主从复制原理]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/105723273</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/105723273</guid><author>litianjun2000</author><pubDate>Fri, 24 Apr 2020 09:23:24 +0800</pubDate><description><![CDATA[1，Master把数据更改记录到 Binary-Log 中 。二进制日志事件。

2，备库将主库上的日志复制到自己的中继日志中（Relay-Log）。

3，备库读取Relay-Log中的事件，将其重放到备库数据上。


...]]></description><category></category></item><item><title><![CDATA[Ubuntu 下软件安装，升级，卸载]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/80637610</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/80637610</guid><author>litianjun2000</author><pubDate>Sat, 09 Jun 2018 23:57:48 +0800</pubDate><description><![CDATA[1，APT方式普通安装 apt-get install software-name ;修复安装 apt-get -f install software-name;重新安装 apt-get --reinstall install software-name;2，dpkg方式    dpkg -i package-name.deb 3, 源码安装4，查看ubuntu中安装的软件dpkg -l 列出当前...]]></description><category></category></item><item><title><![CDATA[Linux软件安装管理（一）]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/78316169</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/78316169</guid><author>litianjun2000</author><pubDate>Mon, 23 Oct 2017 10:27:42 +0800</pubDate><description><![CDATA[源码包的安装





二进制包安装]]></description><category></category></item><item><title><![CDATA[路由协议基础]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/78280748</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/78280748</guid><author>litianjun2000</author><pubDate>Thu, 19 Oct 2017 09:52:28 +0800</pubDate><description><![CDATA[静态路由配置

默认路由

路由条目，管理距离和度量值]]></description><category></category></item><item><title><![CDATA[Linux文件系统]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/78275695</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/78275695</guid><author>litianjun2000</author><pubDate>Wed, 18 Oct 2017 17:49:14 +0800</pubDate><description><![CDATA[EXT4 系统特点：


XFS 特点:]]></description><category></category></item><item><title><![CDATA[Centos7进单用户模式]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/78248357</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/78248357</guid><author>litianjun2000</author><pubDate>Mon, 16 Oct 2017 12:18:12 +0800</pubDate><description><![CDATA[开机出现grub画面后按e , 删除箭头处的rhgb quiet , 然后按 Ctrl-x 启动]]></description><category></category></item><item><title><![CDATA[LVM]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/78222761</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/78222761</guid><author>litianjun2000</author><pubDate>Fri, 13 Oct 2017 10:14:34 +0800</pubDate><description><![CDATA[1, 把硬盘初始化成PV ,(底层是 把硬盘划成一个一个的PE),默认一个PE是4M，可调。2，把1个或多个PV加到VG.3，创建LV,格式化4, 挂载使用实践1，查看我本机的硬盘信息，一共3块硬盘，一个30G的已经做了LVM，还有新加的2块硬盘，sdb 是10G , sdc 是15G2, 把两块硬盘创建成了PV 3,查看PV信息，这里用pvs ,查看详细信息用pvdisplay4, 创建VG ,...]]></description><category></category></item><item><title><![CDATA[GNU与GPL]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/78222605</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/78222605</guid><author>litianjun2000</author><pubDate>Fri, 13 Oct 2017 10:04:25 +0800</pubDate><description><![CDATA[GNU
GPL]]></description><category></category></item><item><title><![CDATA[shell-1]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/78192603</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/78192603</guid><author>litianjun2000</author><pubDate>Tue, 10 Oct 2017 14:50:23 +0800</pubDate><description><![CDATA[#!/bin/bash  表示以下写的程序是shell脚本]]></description><category></category></item><item><title><![CDATA[ssh]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/78133151</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/78133151</guid><author>litianjun2000</author><pubDate>Fri, 29 Sep 2017 13:56:48 +0800</pubDate><description><![CDATA[ssh协议的功能

公匙与私匙


ssh主要用 RSA/DSA/Diffie-Hellman 算法


ssh连接过程




ssh 命令参数


不记录密钥




删除已有的服务器公钥]]></description><category></category></item><item><title><![CDATA[CentOS 7 yum 安装MySQL]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/78124743</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/78124743</guid><author>litianjun2000</author><pubDate>Thu, 28 Sep 2017 16:07:49 +0800</pubDate><description><![CDATA[1, 卸载centos7自带的mariadb
    rpm -qa | grep mariadb
    rpm -e --nodeps 文件名


2， 下载repo源，并安装
    wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
  安装rpm包
   rpm -ivh mysql-co]]></description><category></category></item><item><title><![CDATA[运维的划分]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/78124405</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/78124405</guid><author>litianjun2000</author><pubDate>Thu, 28 Sep 2017 15:49:22 +0800</pubDate><description><![CDATA[应用运维，或者称之为业务运维，运维团队中最懂各自负责的产品线的人，直接接受开发，测试的需求，包括上线发布，回滚等等操作，并且精益求精，提高响应的质量，降低响应的时间。也是最必需最基础的运维。
系统运维，关注点在系统以及一些常用工具架构方面，一部分需求来自于研发，但是大部分时间是为了做好架构，方便业务运维更快的响应。
平台开发，也就是DevOps，随着公司业务线越来越多，业务运维中可以提取出来的重复操]]></description><category></category></item><item><title><![CDATA[github使用]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/72353513</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/72353513</guid><author>litianjun2000</author><pubDate>Tue, 16 May 2017 21:40:47 +0800</pubDate><description><![CDATA[github使用
vim .bash_profile
export PATH=/usr/local/git/bin:$PATH
source .bash_profile
git –version]]></description><category></category></item><item><title><![CDATA[Objective-C 类方法]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/54847191</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/54847191</guid><author>litianjun2000</author><pubDate>Fri, 03 Feb 2017 15:27:37 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[Objective-c 构造方法(初始化方法)]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/54845014</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/54845014</guid><author>litianjun2000</author><pubDate>Fri, 03 Feb 2017 11:49:53 +0800</pubDate><description><![CDATA[alloc 创建对象，分配内存
构造方法(初始化方法)：初始化alloc创建的对象，把对象清0 ， 给对象的实例变量赋值。 
带参数的构造方法必须以  initWithXXX 开头，W必须大写]]></description><category></category></item><item><title><![CDATA[2017]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/54844872</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/54844872</guid><author>litianjun2000</author><pubDate>Fri, 03 Feb 2017 09:27:14 +0800</pubDate><description><![CDATA[放下，2017


海纳百川 有容乃大


夫英雄者也，胸怀大志 ， 腹有良谋 ， 有包藏宇宙之机 ， 吞吐天地之气者也。]]></description><category></category></item><item><title><![CDATA[JSON]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/54729396</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/54729396</guid><author>litianjun2000</author><pubDate>Wed, 25 Jan 2017 13:46:30 +0800</pubDate><description><![CDATA[JavaScript Object Notation
Notation:  符号；乐谱；注释；记号法]]></description><category></category></item><item><title><![CDATA[AVAudioPlayer]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/54630190</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/54630190</guid><author>litianjun2000</author><pubDate>Fri, 20 Jan 2017 11:37:49 +0800</pubDate><description><![CDATA[1, 导入框架


2，创建 AVAudioPlayer 实例，


3， 通过 url 路径找到歌曲， 

 NSString* strPath = [[NSBundle
mainBundle]pathForResource:@"太委屈"
ofType:@"mp3"];
        NSURL* url = [NSURL
fileURLWithPath:strPath]]></description><category></category></item><item><title><![CDATA[Objective-c 之 Property]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/54600021</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/54600021</guid><author>litianjun2000</author><pubDate>Wed, 18 Jan 2017 11:58:28 +0800</pubDate><description><![CDATA[1, 定义类 --》 定义 实例变量（属性） --> 定义属性的get,set方法


-(void)setAge:(int)age{
_age = age; 
}


-(int)age{
return _age;
}


2，]]></description><category></category></item><item><title><![CDATA[Objective-C 数据类型]]></title><link>https://blog.youkuaiyun.com/litianjun2000/article/details/54565401</link><guid>https://blog.youkuaiyun.com/litianjun2000/article/details/54565401</guid><author>litianjun2000</author><pubDate>Sun, 15 Jan 2017 23:35:33 +0800</pubDate><description><![CDATA[Objective-C 的数据类型总体分为三类
使用 sizeof()  可判断变量所占用的内存空间
基本类型
（1）整型
       a,  short Int : 16bit   , -2^15  ---  2^15 -1
       b, Int  : 32bit  -2^31 --- 2^31 -1
       c, long Int : 不同平台占用空间不同
    ]]></description><category></category></item></channel></rss>