| <?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 master node, get the jmx-json document |
| * check the storage capacity remaining on local datanode storage |
| */ |
| |
| $options = getopt ("h:p:w:c:"); |
| if (!array_key_exists('h', $options) || !array_key_exists('p', $options) || !array_key_exists('w', $options) |
| || !array_key_exists('c', $options)) { |
| usage(); |
| exit(3); |
| } |
| |
| $host=$options['h']; |
| $port=$options['p']; |
| $warn=$options['w']; $warn = preg_replace('/%$/', '', $warn); |
| $crit=$options['c']; $crit = preg_replace('/%$/', '', $crit); |
| |
| /* Get the json document */ |
| $json_string = file_get_contents("http://".$host.":".$port."/jmx?qry=Hadoop:service=DataNode,name=FSDatasetState-DS-*"); |
| $json_array = json_decode($json_string, true); |
| $object = $json_array['beans'][0]; |
| $cap_remain = $object['Remaining']; /* Total capacity - any extenal files created in data directories by non-hadoop app */ |
| $cap_total = $object['Capacity']; /* Capacity used by all data partitions minus space reserved for M/R */ |
| $percent_full = ($cap_total - $cap_remain)/$cap_total * 100; |
| |
| $out_msg = "Capacity:[" . $cap_total . |
| "], Remaining Capacity:[" . $cap_remain . |
| "], percent_full:[" . $percent_full . "]"; |
| |
| if ($percent_full > $crit) { |
| echo "CRITICAL: " . $out_msg . "\n"; |
| exit (2); |
| } |
| if ($percent_full > $warn) { |
| echo "WARNING: " . $out_msg . "\n"; |
| exit (1); |
| } |
| echo "OK: " . $out_msg . "\n"; |
| exit(0); |
| |
| /* print usage */ |
| function usage () { |
| echo "Usage: $0 -h <host> -p port -w <warn%> -c <crit%>\n"; |
| } |
| ?> |