Nginx | Linux Ask!

Why SSL cannot be used with name-based virtual hosts?

May 162011

Why SSL cannot be used with name-based virtual hosts?

Answer:

The reason is pretty simple: If you are using a single IP but with many virtual hosts, each virtual hosts has their own certificate and private key. Without looking at the Host header in the incoming HTTP request, Apache will not be able to route the request to the designated virtual hosts. The core problem is, the incoming requests are encrypted so we are not able to tell which key should be used for decryption!

So only IP-based virtual hosts works if you need SSL.

Enable Expire header in Nginx

Nginx No Responses »

Apr 302011

Enable Expire header in Nginx

Answer:

Enabling Expire header for static contents is useful to reduce the loading of your web server.

If you are using nginx, it is easy by adding the following lines in your nginx.conf

location ~* \.(ico|css|js|gif|jpe?g|png)$ {
    expires max;
}

So all files with the above extensions will be delivered with the maximum expire header.

If you want user to update the cached contents, make sure you have change the path (i.e. rename) of these resources.

How to change the nginx log format?

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Dec 172010

How to change the nginx log format?

Answer:

Firstly, you need to define a valid log format for nginx, e.g.

log_format foo '$remote_addr - $remote_user [$time_local]  '
                '"$request" $status $bytes_sent '
                '"$http_referer" "$http_user_agent"';

Then, you need to link that format with your log file:

access_log /var/logs/nginx-test-access.log foo;

Enable gzip compression in Nginx

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Aug 142010

Enable gzip compression in Nginx

Answer:

Enabling gzip compression for text based output such as HTML can greatly improve the response of user.

If you are using nginx, it is easy by adding the following lines in your nginx.conf

gzip  on;
gzip_min_length  1000;
gzip_proxied     expired no-cache no-store private auth;
gzip_types text/plain text/html text/css application/json application/x-javascript text/javascript text/xml application/xml;

Installing Nginx in Ubuntu

Nginx No Responses »

Apr 102010

Installing Nginx in Ubuntu

Answer:

1. Using aptitude

# sudo aptitude install nginx

2. Start it

# sudo /etc/init.d/nginx start

3. Stop it

# sudo /etc/init.d/nginx stop

4. Restart it

# sudo /etc/init.d/nginx restart

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