Keepalived+HAProxy实现读写分离discuz论坛

2015-10-08

一、测试环境： centos 6.6；使用8台虚拟机（上图）分别对它们设置主机名：主机名 ip地址软件包 node1 172.16.16.11 keepalived+haproxy node2 172.16.16.12 keepalived+haproxy php1 172.16.16.2 httpd+php+php-mysql+nfs-utils php2 172.16.16.8 httpd+php+php-mysql+nfs-utils web1 172.16.16.3 httpd web2 172.16.16.4 httpd mysql 172.16.16.5 mariadb-5.5.43-linux-x86_64.tar.gz nfs 172.16.16.252 nfs-utils 上述服务器实现的作用介绍： ①keepalived+haproxy，实现高可用和haproxy的反向代理功能并实现动静分离的效果；请求动态的内容交……

利用catalina定位tomcat问题原因

2015-08-27

| http/html/web

最近朋友的公司要搭建公司的内部WiKi系统，由于之前一起的用过confluence，所以其对confluence比较中意。不过朋友公司里面懂Linux的不多，所以只能在windows下搭建。不过在启动时发现一闪而过，查看logs目录也未发现有日志输出，本篇就通过catalina.……

AKCMS的nginx伪静态规则

2015-07-02

| http/html/web perl/php/python/gawk/sed

一直有打算使用一个简单而不简洁的而且占用系统资源较少的cms 来做一个可定制化的站点，选来选去感觉akcms还是比较不错的，私下也搭建测试过，不过想要利用akcms做一个比较不错的站点需要有一定的基础去制做模板，一些代码微调等。由于近期事情太忙，先将nginx下对于akcms 的伪静……

fastcgi_cache with conditional purging

2015-06-10

| http/html/web

Check if your nginx has fastcgi_cache_purge module Support for fastcgi_cache_purge should be already there. You can test it by running following command: 1nginx -V 2>&1 | grep nginx-cache-purge -o If you see nginx-cache-purge in output then you already have it. Otherwise, if you are on Ubuntu with default Nginx installation, you can run following commands to install nginx with fastcgi_cache_purge module. Reinstall nginx with fastcgi_cache purge module support 1sudo add-apt-repository ppa:rtcamp/nginx 2sudo apt-get update 3sudo apt-get remove nginx* 4sudo apt-get install nginx-custom Install Nginx Helper Plugin Above step ensures that Nginx can purge a page from its fastcgi_cache selectively. But Nginx cannot automatically find out which page to purge and when to purge? So install Nginx helper plugin from WordPress plugin repository and activate it. Apart from other features, it provides cache purging options. Just activate it, go to its settings and turn on “Enable Cache Purge” option.……

Crawl a website with scrapy

2015-06-06

| http/html/web perl/php/python/gawk/sed

Introduction In this article, we are going to see how to scrape information from a website, in particular, from all pages with a common URL pattern. We will see how to do that with Scrapy, a very powerful, and yet simple, scraping and web-crawling framework. For example, you might be interested in scraping information about each article of a blog, and store it information in a database. To achieve such a thing, we will see how to implement a simple spider using Scrapy, which will crawl the blog and store the extracted data into a MongoDB database. We will consider that you have a working MongoDB server, and that you have installed thepymongoandscrapypython packages, both installable with pip. If you have never toyed around with Scrapy, you should first read this short tutorial. First step, identify the URL pattern(s) In……

Best Bootstrap Login Form Style

2015-05-26

| http/html/web

由于上一篇提到flask + bootstarp 做一个简单的登录页面，所以本篇幅是上一篇幅的一个副产品，在找模板的时候，会国外一篇文章上看到的几个不错的模板，这里摘录如下。 A few weeks ago I made a post about the login form style using CSS.Now, I find the CSS login form with bootstrap. We know, bootstrap is most CSS fraemwork used on the planet. I am using bootstrap to design an online store, this blog and others. Bootstrap is easy to use and produce responsive web design. Login form is usually used as a……

Nginx+Https配置

2015-04-07

| http/html/web

现在越来越多的站点使用了https加密，这里结合密钥的创建到nginx的https配置分别进行下介绍。TLS或传输层安全( transport layer security)，它的前身是SSL(安全套接字层secure sockets layer)，是Web协议用来包裹在一个受保护，加密封装正常通道。采用这种技术，服务器和客……

tinypng图片压缩

2015-03-06

| http/html/web

站点页面上占用数据较多的一般是图片，图片的压缩比越大，访问页面速度会越快。wordpress下有相关的如WP Smush.it可以用于图片压缩，不过对于压缩比例和保真层度来看，不如tinypng 。其对wordpress也提供了相应的插件，不过免费版每个邮箱用户每月只提供五百个请求的……

18个图片压缩工具提高站点访问速度

2015-01-12

| http/html/web

With page speed a ranking SEO factor and consumers expecting exceedingly fast web experiences, it’s crucial to get aggressive and take control of your image sizes to deliver a faster loading website to your users. Image compression is either lossy or lossless: Lossy works by discarding information from the original file, and lossless retains all the original data (though, the file size tends to be bigger). There’s a variety of image compression algorithms that take different approaches to reducing file size, and the tools listed below utilize a number of those to minimize the size of your images. Whether it’s JPEG, PNG, GIF or SVG, we’ve got you covered with this selection of 18 free, premium, online and desktop-based image compressors. All of them……

用SublimeText2制作网页中的表格

2015-01-02

| http/html/web

一个网页有时候总是会有表格的，所以，制作表格的技能我们当然是要get的。首先，先来表格的标签属性吧：表格标签属性标签描述定义表格定义表格标题定义表格中的表头单元格定义表格中的行定义表格中的单元定义表格中的表头内容定义表格中的主体内容定义表格中的一个或多个列的属性定义表格中的表注内……

分类 http/html/web articles

Keepalived+HAProxy实现读写分离discuz论坛

利用catalina定位tomcat问题原因

AKCMS的nginx伪静态规则

fastcgi_cache with conditional purging

Crawl a website with scrapy

Best Bootstrap Login Form Style

Nginx+Https配置

tinypng图片压缩

18个图片压缩工具提高站点访问速度

用SublimeText2制作网页中的表格

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