NGINX url rewrite on digitalocean - nginx

Question

I have problem with url rewrite from example.com to www.example.com on nginx web server. I using new hosting digitalocean.com and still struggling with this...
I will be happy with every opinion.
There is my code:
server {
server_name example.com;
return 301 http://www.example.com$request_uri;
}
server {
server_name www.example.com;
root /usr/share/nginx/www;
index index.php index.html index.htm;
error_page 404 /404.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/www;
}
location / {
try_files $uri $uri/ /index.html;
}
location ~ \.php$ {
try_files $uri =404;
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
}
I have error when I trying to restart nginx server:
Restarting nginx: nginx: [emerg] could not build the server_names_hash, you should
increase server_names_hash_bucket_size: 32
nginx: configuration file /etc/nginx/nginx.conf test failed

Answer 1

The server name is probably too long for the default values.
Modify the /etc/nginx/nginx.conf file by adding the following below the http:
increase server_names_hash_bucket_size: 64
Save this value and test using the -t
nginx -t
Also, watch for any saved default configurations in the sites-available folder which may cause issues.

Answer 2

Try the following:
server {
server_name example.com;
return 301 http://www.example.com$request_uri;
}
server {
server_name www.example.com;
root /usr/share/nginx/www;
index index.php index.html index.htm;
error_page 404 /404.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/www;
}
location / {
try_files $uri $uri/ /index.html;
}
location ~ \.php$ {
try_files $uri =404;
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
}