503 Service Unavailable when using firewall

[Roberto O. Fernández Crisial]

Ivan,

Have you tried telnet from Varnish server to Zotonic server?

$ telnet zotonic.address 8000

Check if there is any response.

--
Roberto O. Fernández Crisial
@rofc

On Wed, Dec 7, 2011 at 1:52 PM, Ivan Martinez
<ivan.martinez at masterion.com>wrote:

> Hello all,
> In a CentOS 6 server, I'm running Varnish in port 80 serving pages from a
> Zotonic site in port 8000. It works fine when I leave all the ports open.
> However, if I close all ports from 0 to 631 and explicitly open 80 and
> 8000, the following happens:
>
> - I can see the website in server:8000.
> - In server:80, I get the following after some seconds:
>
> Error 503 Service Unavailable
>
> Service Unavailable
> Guru Meditation:
>
> XID: 544990083
>
> Varnish cache server
>
> I have read about the sysctl issues with firewalls but it seems I have it
> right:
>
> [root at server ivanmr]# sysctl -A | grep tw
> net.ipv4.tcp_max_tw_buckets = 2048
> net.ipv4.tcp_tw_recycle = 0
> net.ipv4.tcp_tw_reuse = 0
>
> varnish.log is empty. What can be the problem?. Thank you.
>
> Ivan
>
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