Installed Varnish, Migrated my site frm shared hosting to VPS -Sudden Loss in Traffic

dreamcoder · 08-11-2012, 01:35 AM

Hi Guys,

Yesterday evening I took a backup of my wp site from my shared hosting and ftp'd it to my Ubuntu Linux VPS having nginx 1.2.3, php, mysql

After a bit of configurations in wp-config.php everything was working fine.
When I entered the Ip Address of my site in the browser I could see my wp site working perfectly

But before updating my dns records I installed APC and after that I installed Varnish and configured it to scan all the incoming traffic on port 80 and then send it to nginx listening on port 8080, Also I have iptables configured to block all the ports except the port 80, 8080, 443 and the ssh port

Now I created a dns zone using my vps control panel for my domain name, which then gave me nameservers to be updated on my domain name registrar, then I updated the nameservers details on my domain name registrar's control panel with the one provided by vps cp

I did this yesterday evening, now today after the dns propagation, in the morning I see that the statcounter is reporting very low traffic, whereas I used to get on average 16k unique visitors per day and around 3k visitors by morning but today I got only 300 unique visitors..... A HUGE DIFFERENCE !!

Guys, I'm worried about this sudden drop in my traffic, I don't know what might have caused this. Is this because of varnish on 80 and nginx on port 8080? or because my shared host had Apache and I'm having nginx on my vps?

Guys, please help me out, what has caused this deadly problem and how can I fix this, I want my traffic back

Thanks a lot

dreamcoder · 08-11-2012, 03:59 AM

A Quick Update:

===================

Guys, when I see the access logs of nginx I see that my Server IP Address is shown as the visitors IP Address in the logs

could this be causing the problem and how can I fix this ?

TheMadIndian · 08-22-2012, 05:32 PM

Quote:

Originally Posted by dreamcoder

A Quick Update:

===================

Guys, when I see the access logs of nginx I see that my Server IP Address is shown as the visitors IP Address in the logs

could this be causing the problem and how can I fix this ?

Two things, first if varnish is caching with high hit rates nginx logs will no longer be accurate and you can rectify this by using varnishncsa this is a decent article on configuring it http://go2linux.garron.me/linux/2011...d-awstats-1014

second if you want to see an ip other than you machine add this to the vcl_recv

Code:

if (req.restarts == 0) {
                if (req.http.x-forwarded-for) {
                        set req.http.X-Forwarded-For = req.http.X-Forwarded-For + ", " + client.ip;
                } else {
                        set req.http.X-Forwarded-For = client.ip;
                }
        }