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jbuchbinderjbuchbinder
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Merge pull request #87 from blackthornedk/master
Added APC Status
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‎apc_status/README.mkdn

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apc_status
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===============
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python module for ganglia 3.1.
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"apc_status" sends metrics on Another PHP Cache process status refering to
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apc-json.php.
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To use this you will need to copy apc-json.php to your webdir.
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## AUTHOR
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Jacob V. Rasmussen <jacobvrasmussen@gmail.com>

‎apc_status/conf.d/apc_status.pyconf

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modules {
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module {
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name = "apc_status"
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language = "python"
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# URL of the resident apc-json.php script, which will translate the APC figures to JSON
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param url {
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value = "http://localhost/apc-json.php"
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}
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# Which metric group should these metrics be put into
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param metric_group {
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value = "apc_cache"
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}
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}
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}
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collection_group {
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collect_every = 30
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time_threshold = 90
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metric {
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name = "apc_mem_size"
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title = "Total Memory"
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value_threshold = 0
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}
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metric {
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name = "apc_mem_avail"
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title = "Free Memory"
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value_threshold = 0
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}
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metric {
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name = "apc_mem_used"
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title = "Used Memory"
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value_threshold = 0
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}
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metric {
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name = "apc_num_slots"
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title = "Number of Slots"
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value_threshold = 0
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}
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metric {
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name = "apc_num_hits"
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title = "Number of Cache Hits"
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value_threshold = 0
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}
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metric {
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name = "apc_num_misses"
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title = "Number of Cache Misses"
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value_threshold = 0
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}
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metric {
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name = "apc_num_inserts"
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title = "Number of Cache Inserts"
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value_threshold = 0
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}
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metric {
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name = "apc_expunges"
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title = "Number of Cache Deletes"
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value_threshold = 0
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}
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metric {
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name = "apc_num_entries"
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title = "Cached Files"
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value_threshold = 0
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}
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metric {
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name = "apc_num_seg"
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title = "Segments"
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value_threshold = 0
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}
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metric {
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name = "apc_uptime"
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title = "Uptime"
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value_threshold = 0
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}
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metric {
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name = "apc_request_rate"
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title = "Request Rate (hits, misses)"
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value_threshold = 0.0
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}
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metric {
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name = "apc_hit_rate"
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title = "Hit Rate"
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value_threshold = 0.0
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}
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metric {
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name = "apc_miss_rate"
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title = "Miss Rate"
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value_threshold = 0.0
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}
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metric {
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name = "apc_insert_rate"
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title = "Insert Rate"
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value_threshold = 0.0
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}
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}

‎apc_status/document_root/apc-json.php

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<?php
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#
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# APC JSON builder
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# Used for Ganglia APC Status module
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#
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# Author: Jacob V. Rasmussen (jacobvrasmussen@gmail.com)
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# Site: http://blackthorne.dk
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#
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header("Content-type: text/plain");
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function cmp_cache_list($a, $b)
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{
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return ($b['num_hits'] - $a['num_hits']);
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}
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if ($_SERVER["REMOTE_ADDR"] == "127.0.0.1" || TRUE)
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{
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$cache = apc_cache_info();
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$mem = apc_sma_info();
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$cache['uptime'] = time() - $cache['start_time'];
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$cache['request_rate'] = ($cache['num_hits'] + $cache['num_misses']) / $cache['uptime'];
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$cache['hit_rate'] = $cache['num_hits'] / $cache['uptime'];
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$cache['miss_rate'] = $cache['num_misses'] / $cache['uptime'];
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$cache['insert_rate'] = $cache['num_inserts'] / $cache['uptime'];
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$cache['num_seg'] = $mem['num_seg'];
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$cache['mem_size'] = $mem['num_seg'] * $mem['seg_size'];
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$cache['mem_avail'] = $mem['avail_mem'];
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$cache['mem_used'] = $cache['mem_size'] - $cache['mem_avail'];
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$cache_list = $cache['cache_list'];
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usort($cache_list, 'cmp_cache_list');
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unset($cache['cache_list']); //lots of info that we don't need for a brief status
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unset($cache['deleted_list']); // ditto
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if (@$_REQUEST['debug'] == '1')
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{
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print_r($cache);
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print_r($mem);
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print_r($cache_list);
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}
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echo json_encode($cache);
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}

‎apc_status/python_modules/apc_status.py

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#
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#
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# Module: apc_status
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# Graphs the status of APC: Another PHP Cache
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#
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# Useage: To use this, you need to copy the apc-json.php file to your document root of the local webserver.
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# The path to the apc-json.php should be set in conf.d/apc_status.pyconf
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#
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# Author: Jacob V. Rasmussen (jacobvrasmussen@gmail.com)
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# Site: http://blackthorne.dk
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#
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import urllib2
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import json
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import traceback
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NAME_PREFIX = "apc_"
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APC_STATUS_URL = ""
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descriptors = list()
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Desc_Skel = {}
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metric_list = {
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NAME_PREFIX + 'num_slots' : { 'type': 'uint', 'format' : '%d', 'unit': 'Slots', 'desc': 'Number of slots' },
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NAME_PREFIX + 'num_hits' : { 'type': 'uint', 'format' : '%d', 'unit': 'Hits', 'desc': 'Number of cache hits' },
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NAME_PREFIX + 'num_misses' : { 'type': 'uint', 'format' : '%d', 'unit': 'Misses', 'desc': 'Number of cache misses' },
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NAME_PREFIX + 'num_inserts' : { 'type': 'uint', 'format' : '%d', 'unit': 'Inserts', 'desc': 'Number of cache inserts' },
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NAME_PREFIX + 'expunges' : { 'type': 'uint', 'format' : '%d', 'unit': 'Deletes', 'desc': 'Number of cache deletes' },
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NAME_PREFIX + 'mem_size' : { 'type': 'uint', 'format' : '%d', 'unit': 'Bytes', 'desc': 'Memory size' },
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NAME_PREFIX + 'num_entries' : { 'type': 'uint', 'format' : '%d', 'unit': 'Entries', 'desc': 'Cached Files' },
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NAME_PREFIX + 'uptime' : { 'type': 'uint', 'format' : '%d', 'unit': 'seconds', 'desc': 'Uptime' },
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NAME_PREFIX + 'request_rate' : { 'type': 'float', 'format' : '%f', 'unit': 'requests/sec', 'desc': 'Request Rate (hits, misses)' },
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NAME_PREFIX + 'hit_rate' : { 'type': 'float', 'format' : '%f', 'unit': 'requests/sec', 'desc': 'Hit Rate' },
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NAME_PREFIX + 'miss_rate' : { 'type': 'float', 'format' : '%f', 'unit': 'requests/sec', 'desc': 'Miss Rate' },
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NAME_PREFIX + 'insert_rate' : { 'type': 'float', 'format' : '%f', 'unit': 'requests/sec', 'desc': 'Insert Rate' },
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NAME_PREFIX + 'num_seg' : { 'type': 'uint', 'format' : '%d', 'unit': 'fragments', 'desc': 'Segments' },
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NAME_PREFIX + 'mem_avail' : { 'type': 'uint', 'format' : '%d', 'unit': 'bytes', 'desc': 'Free Memory' },
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NAME_PREFIX + 'mem_used' : { 'type': 'uint', 'format' : '%d', 'unit': 'bytes', 'desc': 'Used Memory' },
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}
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def get_value(name):
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try:
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req = urllib2.Request(APC_STATUS_URL, None, {'user-agent':'ganglia-apc-python'})
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opener = urllib2.build_opener()
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f = opener.open(req)
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apc_stats = json.load(f)
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except urllib2.URLError:
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traceback.print_exc()
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return apc_stats[name[len(NAME_PREFIX):]]
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def create_desc(prop):
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d = Desc_Skel.copy()
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for k,v in prop.iteritems():
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d[k] = v
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return d
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def metric_init(params):
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global descriptors, Desc_Skel, APC_STATUS_URL
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if "metric_group" not in params:
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params["metric_group"] = "apc_cache"
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Desc_Skel = {
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'name' : 'XXX',
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'call_back' : get_value,
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'time_max' : 60,
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'value_type' : 'uint',
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'units' : 'proc',
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'slope' : 'both',
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'format' : '%d',
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'description' : 'XXX',
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'groups' : params["metric_group"],
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}
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if "refresh_rate" not in params:
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params["refresh_rate"] = 15
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if "url" not in params:
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params["url"] = "http://localhost/apc-json.php"
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APC_STATUS_URL = params["url"]
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if "spoof_host" in params:
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Desc_Skel["spoof_host"] = params["spoof_host"]
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for k,v in metric_list.iteritems():
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descriptors.append(create_desc({
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"name" : k,
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"call_back" : get_value,
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"value_type" : v["type"],
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"units" : v["unit"],
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"format" : v["format"],
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"description" : v["desc"],
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}))
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return descriptors
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def metric_cleanup():
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pass
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if __name__ == '__main__':
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metric_init({})
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for d in descriptors:
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v = d['call_back'](d['name'])
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print 'value for %s is %s' % (d['name'], v)
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