You must install Elasticsearch before installing Magento Commerce or Magento Open Source 2.4.0. See Elasticsearch for details.

Enable or disable maintenance mode

The following guide refers to a standard Magento maintenance mode page. If you need to use a custom maintenance page, see Create the custom maintenance page topic.

Magento uses maintenance mode to disable bootstrapping. Disabling bootstrapping is helpful while you are maintaining, upgrading, or reconfiguring your site.

Magento detects maintenance mode as follows:

  • If var/.maintenance.flag does not exist, maintenance mode is off and Magento operates normally.
  • Otherwise, maintenance mode is on unless var/.maintenance.ip exists.

    var/.maintenance.ip can contain a list of IP addresses. If an entry point is accessed using HTTP and the client IP address corresponds to one of the entries in that list, then maintenance mode is off.

Log in as file system owner

To log in as the file system owner:

  1. Log in to the Magento server as, or switch to, a user with permissions to write to the Magento file system. See switch to the Magento file system owner.

    If you use the bash shell, you can use the following syntax to switch to the Magento file system owner and enter the command at the same time:

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    su <Magento file system owner> -s /bin/bash -c <command>
    

    If the Magento file system owner does not allow logins, you can do the following:

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    sudo -u <Magento file system owner>  <command>
    
  2. To run Magento commands from any directory, add <magento_root>/bin to your system PATH.

    Because shells have differing syntax, consult a reference like unix.stackexchange.com.

    Sample bash shell for CentOS:

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    export PATH=$PATH:/var/www/html/magento2/bin
    

    Optionally, you can run the commands in the following ways:

    • cd <magento_root>/bin and run them as ./magento <command name>
    • <magento_root>/bin/magento <command name>
    • <magento_root> is a subdirectory of your web server docroot.

In addition to the command arguments discussed here, see Common arguments.

Install Magento

Before you use this command to enable or disable maintenance mode, you must install the Magento software.

Enable or disable maintenance mode

Use the magento maintenance CLI command to enable or disable Magento maintenance mode.

Command usage:

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bin/magento maintenance:enable [--ip=<ip address> ... --ip=<ip address>] | [ip=none]
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bin/magento maintenance:disable [--ip=<ip address> ... --ip=<ip address>] | [ip=none]
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bin/magento maintenance:status

--ip=<ip address> is an IP address to exempt from maintenance mode (for example, developers doing the maintenance). To exempt more than one IP address in the same command, use the option multiple times.

Using --ip=<ip address> with magento maintenance:disable saves the list of IPs for later use. To clear the list of exempt IPs, use magento maintenance:enable --ip=none or see Maintain the list of exempt IP addresses.

magento maintenance:status displays the current status of maintenance mode.

For example, to enable maintenance mode with no IP address exemptions:

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bin/magento maintenance:enable

To enable maintenance mode for all clients except 192.0.2.10 and 192.0.2.11:

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bin/magento maintenance:enable --ip=192.0.2.10 --ip=192.0.2.11

After you place Magento in maintenance mode, you must stop all message queue consumer processes. One way to find these processes is to run the ps -ef | grep queue:consumers:start command, and then run the kill <process_id> command for each consumer. In a multiple node environment, repeat this task on each node.

Maintain the list of exempt IP addresses

To maintain the list of exempt IP addresses, you can either use the [--ip=<ip list>] option in the preceding commands or you can use the following:

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bin/magento maintenance:allow-ips <ip address> .. <ip address> [--none]

<ip address> .. <ip address> is an optional space-delimited list of IP addresses to exempt.

--none clears the list.

Multi-store setups

If you want to set up multiple stores, each with a different layout and localized content, pass the $_GET['skin'] parameter to the intended processor. In the following example, we are using a 503 type error template file, which requires localized content.

The constructor of the Error_Processor class accepts a skin GET parameter to change the layout:

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if (isset($_GET['skin'])) {
    $this->_setSkin($_GET['skin']);
}

This can also be added to a rewrite rule in the .htaccess file that will append a skin parameter to the URL.

$_GET[‘skin’] parameter

To use the skin parameter:

  1. Check if the .maintenance.flag exists.
  2. Note the host address, that refers to the HTTP_HOST, or any other variable such as ENV variables.
  3. Check if the skin parameter exists.
  4. Set the parameter by using the rewrite rules below.

    Here are some examples of rewrite rules:

    • RewriteCond %{DOCUMENT_ROOT}/var/.maintenance.flag -f
    • RewriteCond %{HTTP_HOST} ^sub.example.com$
    • RewriteCond %{QUERY_STRING} !(^|&)skin=sub(&|$) [NC]
    • RewriteRule ^ %{REQUEST_URI}?skin=sub [L]
  5. Copy the following files:

    • pub/errors/default/503.phtml to pub/errors/sub/503.phtml
    • pub/errors/default/css/styles.css to pub/errors/sub/styles.css
  6. Edit these files to provide localized content in the 503.phtml file and custom styling in the styles.css file.

    Ensure your paths point to your errors directory. The directory name must match the URL parameter indicated in the RewriteRule. In the previous example, the sub directory is used, which is specified as a parameter in the RewriteRule (skin=sub)

The nginx setting must be added for multi-store setups.