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How to set up mutiple domains with Nginx and Varnish in same server

Posted July 4, 2016 3.8k views
NginxUbuntuDrupal

This is my problem

I have 2 domain : mysite1.com and mysite2.com and one digital ocean Droplet, I installed nginx and varnish, everything work well with mysite1.com and now I want to add more domain to my droplet - mysite2.com

This is my config in default.vcl

backend default {
    .host = "127.0.0.1";
    .port = "8080";
}


backend mysite2 {
    .host = "127.0.0.1";
    .port = "8080";
}

sub vcl_recv {
    if (req.http.host == "mysite1.com" || req.http.host == "www.mysite1.com") {
        set req.backend = default;
    } elsif (req.http.host == "mysite2.com" || req.http.host == "www.mysite2.com") {
        set req.backend = mysite2;
    }
}

and now is ngix config in /etc/ngix/site-avaiable/mysite2

server {

server_name mysite2.com;
#server_name localhost;
listen 127.0.0.1:8080;
root /home/mysite2/sites/mysite2
// some bla bla here
}

My problem is whenever I try to connect to mysite2.com, everything with be move to mysite1.com.

If I turn off varnish, everthing is ok, but when I turn it on, I got this error, I think my config is not correct, but I don’t know why, any one have experience with it?

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4checkervn
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4checkervn
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1 answer
jtittle1 July 5, 2016

@4checkervn

It depends on which version of Varnish you’ve installed & configured.

Try changing:

backend default {
    .host = "127.0.0.1";
    .port = "8080";
}

backend mysite2 {
    .host = "127.0.0.1";
    .port = "8080";
}

sub vcl_recv {
    if (req.http.host == "mysite1.com" || req.http.host == "www.mysite1.com") {
        set req.backend = default;
    } elsif (req.http.host == "mysite2.com" || req.http.host == "www.mysite2.com") {
        set req.backend = mysite2;
    }
}

To:

Varnish 3.x

backend default {
    .host = "127.0.0.1";
    .port = "8080";
}

sub vcl_recv {
    if (req.http.host ~ "^(www\.)?mysite1\.com$") {
        set req.backend = default;
    }

    if (req.http.host ~ "^(www\.)?mysite2\.com$") {
        set req.backend = default;
    }
}

Varnish 4.x

backend default {
    .host = "127.0.0.1";
    .port = "8080";
}

sub vcl_recv {
    if (req.http.host ~ "^(www\.)?mysite1\.com$") {
        set req.backend_hint = default;
    }

    if (req.http.host ~ "^(www\.)?mysite2\.com$") {
        set req.backend_hint = default;
    }
}

… and then restart Varnish.

The above using a regex to match the request instead of using ||. Keeps it short and sweet and only requires that you change mysite# inside the regex.

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