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56

answers:

1
Q: 

DNS problem - dig resolves but curl cannot connect to host

I have recently created a Rackspace cloud server instance using CentOS 5.5. I have used yum to install the "Web Server" group (it includes Apache, etc.), added www.booztrakr.com as the ServerName in httpd.conf, made sure iptables allows on port 80. I had registered this domain with Go-Daddy and changed their name servers to the Rackspace name servers on their site. I added "A" and CNAME records to the Rackspace name servers. httpd has been started. When I use curl on the server I can get the Apache landing page. When I dig www.booztrakr.com from a remote machine(over the internet) the answer section returns:

www.booztrakr.com. 300 IN CNAME booztrakr.com.

booztrakr.com. 300 IN A 184.106.216.156 When I try a browser or curl, it can't connect:

curl -G www.booztrakr.com

curl: (7) couldn't connect to host

I know this has got to be pretty basic and config related but I'll be dammed if I can see it. Any help would be appreciated. Thanks.

+1  A: 

If dig resolves, this just means the DNS server returns the right values. It will even work if the IP doesn't exists.

If a HTTP connecting to the server fails, this is a configuration problem.

The server responds to ICMP requests, so it's not a routing problem.

When I use curl on the server I can get the Apache landing page

Your webserver is running, but you just can't reach it from outside. This is the problem. What does iptables --list outputs?

leoluk  2010-08-20 23:33:16
I think this is the entry of interest:ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:http I added the following line to iptables and restarted it:-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
Bob Setterbo  2010-08-20 23:43:20
Another idea: probably Apache only listens on the loopback interface
leoluk  2010-08-20 23:55:29
I'll look into that - thanks
Bob Setterbo  2010-08-21 00:01:47

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