installed plugin W3 Total Cache version 2.3.2

wp-content/plugins/w3-total-cache/inc/options/enterprise/dbcluster-config.php

@@ -0,0 +1,60 @@
+<?php
+namespace W3TC;
+
+if ( ! defined( 'W3TC' ) ) {
+	die();
+}
+?>
+<?php require W3TC_INC_DIR . '/options/common/header.php'; ?>
+
+<form action="admin.php?page=<?php echo esc_attr( $this->_page ); ?>" method="post">
+	<div class="metabox-holder">
+		<?php Util_Ui::postbox_header( esc_html__( 'Database Cluster Configuration File', 'w3-total-cache' ) ); ?>
+		<table class="form-table">
+			<tr>
+				<th>
+					<textarea cols="70" rows="25" style="width: 100%"
+						name="newcontent" id="newcontent"
+						tabindex="1"><?php echo esc_textarea( $content ); ?></textarea><br />
+					<p class="description">
+						<?php
+						echo wp_kses(
+							sprintf(
+								// translators: 1 opening HTML strong tag, 2 closing HTML strong tag.
+								__(
+									'Note: Changes will have immediate effect on your database configuration. If the application stops working creating the settings file, edit or remove this configuration file manually at %1$s/wp-content/db-cluster-config.php%2$s.',
+									'w3-total-cache'
+								),
+								'<strong>',
+								'</strong>'
+							),
+							array(
+								'strong' => array(),
+							)
+						);
+						?>
+					</p>
+				</th>
+			</tr>
+		</table>
+
+		<p class="submit">
+			<?php
+			echo wp_kses(
+				Util_Ui::nonce_field( 'w3tc' ),
+				array(
+					'input' => array(
+						'type'  => array(),
+						'name'  => array(),
+						'value' => array(),
+					),
+				)
+			);
+			?>
+			<input type="submit" name="w3tc_config_dbcluster_config_save" class="w3tc-button-save button-primary" value="<?php esc_attr_e( 'Save configuration file', 'w3-total-cache' ); ?>" />
+		</p>
+		<?php Util_Ui::postbox_footer(); ?>
+	</div>
+</form>
+
+<?php require W3TC_INC_DIR . '/options/common/footer.php'; ?>