cobbler get-loaders 通过代理下载

• cobbler 版本是2.6.3，可以通过系统环境变量设置proxy，支持 HTTP_PROXY、HTTPS_PROXY、FTP_PROXY 三个变量。
• cobbler 版本是2.6.6时，需要从/etc/cobbler/settings 中增加proxy_url_ext，
   proxy_url_ext: http://10.10.10.100:3128
• 注意：两种情况使生效，必须重启cobbler，/etc/init.d/cobblerd restart
• cobbler get-loaders
  

  [root@cobbler ~]# cobbler get-loaders --force
  task started: 2014-11-07_162343_get_loaders
  task started (id=Download Bootloader Content, time=Fri Nov  7 16:23:43 2014)
  downloading http://www.cobblerd.org/loaders/README to /var/lib/cobbler/loaders/README
  downloading http://www.cobblerd.org/loaders/COPYING.elilo to /var/lib/cobbler/loaders/COPYING.elilo
  downloading http://www.cobblerd.org/loaders/COPYING.yaboot to /var/lib/cobbler/loaders/COPYING.yaboot
  downloading http://www.cobblerd.org/loaders/COPYING.syslinux to /var/lib/cobbler/loaders/COPYING.syslinux
  downloading http://www.cobblerd.org/loaders/elilo-3.8-ia64.efi to /var/lib/cobbler/loaders/elilo-ia64.efi
  downloading http://www.cobblerd.org/loaders/yaboot-1.3.14-12 to /var/lib/cobbler/loaders/yaboot
  downloading http://www.cobblerd.org/loaders/pxelinux.0-3.86 to /var/lib/cobbler/loaders/pxelinux.0
  downloading http://www.cobblerd.org/loaders/menu.c32-3.86 to /var/lib/cobbler/loaders/menu.c32
  downloading http://www.cobblerd.org/loaders/grub-0.97-x86.efi to /var/lib/cobbler/loaders/grub-x86.efi
  downloading http://www.cobblerd.org/loaders/grub-0.97-x86_64.efi to /var/lib/cobbler/loaders/grub-x86_64.efi
  *** TASK COMPLETE ***

  
  

  
  

  
  
• 参考文档链接：https://github.com/jmaas/cobbler/commit/213625c6b1461a3006e63a70d34044db79a6f7ea

  )
   
           proxies = {}
  -        if os.environ.has_key("HTTP_PROXY"):
  -            proxies['http'] = os.environ["HTTP_PROXY"]
  -
  -        if os.environ.has_key("HTTPS_PROXY"):
  -            proxies['https'] = os.environ["HTTPS_PROXY"]
  -
  -        if os.environ.has_key("FTP_PROXY"):
  -            proxies['ftp'] = os.environ["FTP_PROXY"]
  -
  -        if len(proxies) == 0:
  -            proxies = None
  +        proxies['http'] = self.settings.proxy_url_ext
   
           for src,dst in files:
               if os.path.exists(dst) and not force: