跑调关于生活,工作的记录首页微博蛋疼图杂记主意涂鸦代码Recent Posts基于qingcloud架设高可用服务器环境的实践By Soamz under 代码 about none最近的任务是搭建一个高可用的服务器架构，由于试验性质，所以选择在qingcloud上面操作，qingcloud提供了非常先进易用的云服务器环境， 而阿里云、腾讯云都是直接提供官方的负载均衡服务，没法自助操作。haproxy在centos64位下的安装By Soamz under 代码 about haproxy从haproxy的README中，可以看到，需要使用pcre做处理，引用如下文：If your system supports PCRE (Perl Compatible Regular Expressions), then youreally should build with libpcre which is between 2 and 10 times faster thanother libc implementations. Regex are used for header processing (deletion,rewriting, allow, deny). The only inconvenient of libpcre is that it is notyet widely spread, so if you build for other systems, you might get intotrouble if they don't have the dynamic library. In this situation, you shouldstatically link libpcre into haproxy so that it will not be necessary toinstall it on target systems.所以第一步先安装pcre到系统中#编译安装pcre需要c++yum install -y gcc gcc-c++ wget http://downloads.sourceforge.net/project/pcre/pcre/8.33/pcre-8.33.tar.bz2tar -xjf pcre-8.33.tar.bz2cd pcre-8.33./configuremake make install完成安装pcre后，开始安装haproxywget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.24.tar.gztar -zxvf haproxy-1.4.24.tar.gz cd haproxy-1.4.24#阅读README，关于安装配置都文档都在里面make TARGET=linux26 USE_STATIC_PCRE=1make install返回安装结果[root@localhost haproxy-1.4.24]# make installinstall -d /usr/local/sbininstall haproxy /usr/local/sbininstall -d /usr/local/share/man/man1install -m 644 doc/haproxy.1 /usr/local/share/man/man1install -d /usr/local/doc/haproxyfor x in configuration architecture haproxy-en haproxy-fr; do \install -m 644 doc/$x.txt /usr/local/doc/haproxy ; \done测试一下haproxy --helpHA-Proxy version 1.4.24 2013/06/17Copyright 2000-2013 Willy Tarreau Usage : haproxy [-f ]* [ -vdVD ] [ -n  ] [ -N  ][ -p  ] [ -m  ]-v displays version ; -vv shows known build options.-d enters debug mode ; -db only disables background mode.-V enters verbose mode (disables quiet mode)-D goes daemon-q quiet mode : don't display messages-c check mode : only check config files and exit-n sets the maximum total # of connections (2000)-m limits the usable amount of memory (in MB)-N sets the default, per-proxy maximum # of connections (2000)-p writes pids of all children to this file-de disables epoll() usage even when available-ds disables speculative epoll() usage even when available-dp disables poll() usage even when available-sf/-st [pid ]* finishes/terminates old pids. Must be last arguments.转：pyqt5 creater使用By Soamz under 代码 about none1)首先打开 QtDesigner把你要的拉一拉然后存为 test.ui为求简单，我们先使用 main window 的 style，然后随便加几个按钮就结束了2)进入命令行，找到 pyqic5，如果有成功安装 pyqt 的话，应该会有这个指定可以用3)pyqic5 -o test.py test.ui将ui文件转为python的class但是不能直接执行，这只是个 class 的定义而已5)在 test.py 最下面加上if __name__ == '__main__':import sysapp = QtWidgets.QApplication(sys.argv)main_window = QtWidgets.QMainWindow()ui = Ui_MainWindow()ui.setupUi(main_window)main_window.show()sys.exit( app.exec_() )存档，就可以执行了分享一个pyqt的中文版教程By Soamz under 代码 about nonehttp://jimmykuu.sinaapp.com/static/PyQt4_Tutorial/html/index.htmlmac os x 10.7安装