Merge branch '4917-hosts-file-mirror' into 'develop'

Don't change /etc/hosts on mirrors (#4917)

Closes #4917

See merge request ispconfig/ispconfig3!1282

server/plugins-available/network_settings_plugin.inc.php

@@ -249,55 +249,55 @@ class network_settings_plugin {
 				$app->log('Network configuration disabled in server settings.', LOGLEVEL_DEBUG);
 			}
 		}
-		
+
 		//* Configure hostname
-		if($event_name == 'server_update' && $data['mirrored'] == false) {
-			
+		if($event_name == 'server_update' && $conf['mirror_server_id'] == 0) {
+
 			//* get old server config
 			$tmp = $app->ini_parser->parse_ini_string(stripslashes($data['old']['config']));
 			$old_server_config = $tmp['server'];
 			unset($tmp);
-			
+
 			$new_hostname = trim($server_config['hostname']);
 			$old_hostname = trim($old_server_config['hostname']);
-			
+
 			if($new_hostname != '' && $old_hostname != $new_hostname) {
-				
+
 				if(is_file('/etc/hostname')) {
 					$app->system->file_put_contents('/etc/hostname',$new_hostname);
 					$app->log('Changed /etc/hostname to '.$new_hostname, LOGLEVEL_DEBUG);
 				}
-				
+
 				if(is_file('/etc/mailname')) {
 					$app->system->file_put_contents('/etc/mailname',$new_hostname);
 					$app->log('Changed /etc/mailname to '.$new_hostname, LOGLEVEL_DEBUG);
 				}
-				
+
 				$postconf_commands = array(
 					'myhostname = '.$new_hostname,
 					'mydestination = '.$new_hostname.', localhost, localhost.localdomain'
 				);
-				
+
 				//* Executing the postconf commands
 				foreach($postconf_commands as $cmd) {
 					$command = "postconf -e ?";
 					$app->system->exec_safe($command, $cmd);
 				}
-				
+
 				$app->log('Changed changed myhostname and mydestination in postfix main.cf to '.$new_hostname, LOGLEVEL_DEBUG);
-				
+
 				//* change /etc/hosts
 				$hosts = file_get_contents('/etc/hosts');
 				$hosts = str_replace($old_hostname,$new_hostname,$hosts);
 				$app->system->file_put_contents('/etc/hosts',$hosts);
-				
+
 				exec($app->system->getinitcommand('postfix', 'restart').' 2>&1');
 				exec($app->system->getinitcommand('networking', 'restart').' 2>&1');
-				
+
 			}
-			
+
 		}
-		
+
 
 	}