rungix rungix

[attaching this to a CloudFlare survey why I left them (for DNSimple)]

I was a free user using CloudFlare only for DNS, chiefly because it can simulate CNAME at an apex domain. The apex domains mathdown.net,mathdown.com point to mathdown-cben.rhcloud.com. Cloudflare "CNAME-flattening" nicely returns an A record; unfortunately it's served with a huge TTL of 7 days(!), which causes a long outage when the underlying IP changes.

I asked support how I can lower the TTL (BTW it's great that you provide free support at all) and was told [https://support.cloudflare.com/hc/en-us/requests/522551, emphasis mine]:

This is based on the TTL of your authoritative provider for mathdown-cben.rhcloud.com:

	from random import choice
	from scrapy import signals
	from scrapy.exceptions import NotConfigured


	class RotateUserAgentMiddleware(object):
	"""Rotate user-agent for each request."""
	def __init__(self, user_agents):
	self.enabled = False
	self.user_agents = user_agents

 # compile iptables from source and install to /usr/local
 mkdir -p /tmp/iptables
 wget "http://www.netfilter.org/projects/iptables/files/iptables-1.4.21.tar.bz2" -qO- | tar --strip-components=1 -C /tmp/iptables -xvj
 cd /tmp/iptables
 ./configure
 make
 make install
 # set alternatives
 sudo alternatives --install /sbin/iptables iptables.x86_64 /usr/local/sbin/iptables 100 \