windows安裝 python setuptools easy_install

1. Download setuptools, (setuptools-0.6c11.win32-py2.7.exe)
http://pypi.python.org/pypi/setuptools

2. Add C:\Python27\Scripts in PATH variable

3. Install compiler
http://www.microsoft.com/express/Downloads/#2008-Visual-CPP

3. try using easy_install to install some stuff

讓Linux可以解析到WINS下的機器

1. 在/etc/samba/smb.conf新增

[global]
wins server = ip

2. 更改/etc/nsswitch.conf 的hosts解析方式增加wins
hosts: wins dns files


參考資料:
https://bbs.et8.net/bbs/showthread.php?t=885180

Install freeradius2 on CentOS

1. using yum install freeradius2 and freeradius2-utils (CentOS 5.X)
#yum install freeradius2 freeradius2-utils
CentOS 6.X:
package name is freeradius and freeradius-utils

2. start radiusd with debug mode
#radiusd -X
or, start radiusd service
#service radiusd start

3. add a user. add following line at the top of /etc/raddb/users

testing Cleartext-Password := "password"

4. add a accept client rule in /etc/raddb/client.conf:
client 192.168.0.0/24 {
     secret    = testing123
     shortname = private-network
}

5. restart the radiusd
#service radiusd restart

6. try the user testing is acceptable

$ radtest testing password 127.0.0.1 0 testing123

(If show Access-Accept, It success.
If show "radclient:: Failed to find IP address for XXX", That mean radclient can't resolve XXX, add a line to /etc/hosts likes "127.0.0.1 XXX" or setup DNS correctly)

7. try the user testing from remote client

$ radtest testing password 192.168.1.1 0 testing123

reference:
http://freeradius.org/doc/
http://tec1021.pixnet.net/blog/post/28639573-%E8%BC%95%E9%AC%86%E6%9E%B6%E5%A5%BDradius%E4%BC%BA%E6%9C%8D%E5%99%A8~

Install Celery on CentOS6

1. insall epel (ref-link)

2. install erlang
#yum install erlang

3. install rabbitmq
  a. download rabbitmq rpm (link)
  b. install:
    #rpm -Uvh rabbitmq-xxxx.rpm
  c. let rabbitmq daemon auto-start on boot up:
    #chkconfig rabbitmq-server on
  d. start rabbitmq server:
    #service rabbitmq-server start

4. install Celery
#easy_install Celery

5. install django-celery
#easy_install django-celery

6. setting up django-celery on project (link)

using mod_wsgi deploy django project

1. install httpd-devel, python-devel
# yum install htppd-devel, python-devel

2. install mod_wsgi
  a. Download mod_wsgi source code. modwsgi
  b. untar & using ./configure; make; make install

3. edit /etc/httpd/conf/httpd.conf
LoadModule wsgi_module modules/mod_wsgi.so
WSGIScriptAlias /mysite /usr/local/www/mysite/apache/django.wsgi

4. Create django project
#cd /usr/local/www
#django-admin.py startproject mysite

5. create apache folder
# cd /usr/loca/www/mysite
# mkdir apache

6. Create django.wsgi file in apache folder, the content is:

import os
import sys
path = '/usr/local/www'
if path not in sys.path:
    sys.path.append(path)

os.environ['DJANGO_SETTINGS_MODULE'] = 'mysite.settings'

import django.core.handlers.wsgi
application = django.core.handlers.wsgi.WSGIHandler()

7. restart httpd

8. open brower and open link: http://localhost/mysite

Reference:
http://code.google.com/p/modwsgi/wiki/QuickInstallationGuide
http://code.google.com/p/modwsgi/wiki/QuickConfigurationGuide
https://docs.djangoproject.com/en/1.3/howto/deployment/modwsgi/

python with statement

python 2.5支援with statement,用法像這樣,以open file為例:

printf("xxxx");
with open("x.txt") as f:
  data = f.read()
  do something with data

  因為file object已經有了__enter__()和__exit__()這兩個method,利用with statement就能自動達到像是try-except-finally的程式流程

  若自定class implement __enter__(self)和__exit__(self, type, value, traceback)也能利用with statement來簡化

參考資料:
http://effbot.org/zone/python-with-statement.htm
http://effbot.org/pyref/with.htm

解決yum update perl conflict問題

若yum update perl發生
conflicts with file from package perl.x.x.x
用rpm -e移除perl.i386 (若妳的CentOS是x64)
rpm -e perl.i386
在執行yum update perl應該就不會發生conflicts了

參考資料:
http://slash4.de/tutorials/CentOS_5.4_perl_update_problem