Wordpress Lockout

This plugin prevents defined users from logging into Wordpress when the CMS is 'locked'.

A set of users to 'lock out' can be defined in the WP Admin > Settings > Wordpress Lockout menu. They will not be locked out however unless the CMS has also been 'locked' via the global switch in the WP Admin > Settings > Wordpress Lockout menu

Filters

wordpress_lockout:locked_out_message:

What it does: Customise the message that is shown to locked out users (default: You're currently locked out from this CMS)

add_filter('wordpress_lockout:locked_out_message', function ($message) {
    return 'Sorry, we're migrating data at the moment so you can't log in';
});

wordpress_lockout:settings_capability:

What it does: Customise the capability required to 'lock' the CMS (default: 'manage_options')

add_filter('wordpress_lockout:settings_capability', function ($capability) {
    return 'read_posts';
});