How to put magento in maintenance

Question

Is it possible to put a magento site under an maintenance flag so that visitors will get a message that the site is under construction? I can\'t find this setting in the admin a

Answer 1

I use this often. http://inchoo.net/ecommerce/magento/maintenance-mode-in-magento/

The important part is:

Open: index.php in root and above line 57 add (remembering to edit the ‘allowed’ array to contain the IP’s you want to be able to access the site);

$ip = $_SERVER['REMOTE_ADDR'];
$allowed = array('1.1.1.1','2.2.2.2'); // these are the IP's that are allowed to view the site.

then change the line

if (file_exists($maintenanceFile)) {

to

if (file_exists($maintenanceFile) && !in_array($ip, $allowed)) {