| <?php |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* This plugin makes call to namenode, get the jmx-json document |
| * check the NameDirStatuses to find any offline (failed) directories |
| * check_jmx -H hostaddress -p port |
| */ |
| |
| $options = getopt ("h:p:"); |
| if (!array_key_exists('h', $options) || !array_key_exists('p', $options)) { |
| usage(); |
| exit(3); |
| } |
| |
| $host=$options['h']; |
| $port=$options['p']; |
| |
| /* Get the json document */ |
| $json_string = file_get_contents("http://".$host.":".$port."/jmx?qry=Hadoop:service=NameNode,name=NameNodeInfo"); |
| $json_array = json_decode($json_string, true); |
| $object = $json_array['beans'][0]; |
| if ($object['NameDirStatuses'] == "") { |
| echo "UNKNOWN: NameNode directory status not available via http://<nn_host>:port/jmx url" . "\n"; |
| exit(3); |
| } |
| $NameDirStatuses = json_decode($object['NameDirStatuses'], true); |
| $failed_dir_count = count($NameDirStatuses['failed']); |
| $out_msg = "CRITICAL: Offline NameNode directories: "; |
| if ($failed_dir_count > 0) { |
| foreach ($NameDirStatuses['failed'] as $key => $value) { |
| $out_msg = $out_msg . $key . ":" . $value . ", "; |
| } |
| echo $out_msg . "\n"; |
| exit (2); |
| } |
| echo "OK: All NameNode directories are active" . "\n"; |
| exit(0); |
| |
| /* print usage */ |
| function usage () { |
| echo "Usage: $0 -h <host> -p port\n"; |
| } |
| ?> |