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a6bc7490e2
* docker app: polling - RRD dataset and fields value mismatch RRD dataset definitions and fields array keys passed to data_update have to be in the same order. There is no match based on key before building the rrdtool update command. Fixes mem_perc ending as NaN because it ended with a value above 100 as it was given mem_limit bytes value. * docker app - remove misleading divider The mem_perc and cpu_usage are already in percent, no need to divide them by a hundred. The values were then made into milli percent or micro percent.
69 lines
1.9 KiB
PHP
69 lines
1.9 KiB
PHP
<?php
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use LibreNMS\Exceptions\JsonAppException;
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use LibreNMS\Exceptions\JsonAppMissingKeysException;
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use LibreNMS\RRD\RrdDefinition;
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$name = 'docker';
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$app_id = $app['app_id'];
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$output = 'OK';
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function convertToBytes(string $from): ?int
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{
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$units = ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB'];
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$number = substr($from, 0, -3);
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$suffix = substr($from, -3);
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//B or no suffix
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if (is_numeric(substr($suffix, 0, 1))) {
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return (int) $from;
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}
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$exponent = array_flip($units)[$suffix] ?? null;
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if ($exponent === null) {
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return null;
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}
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return (int) ($number * (1024 ** $exponent));
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}
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try {
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$docker_data = json_app_get($device, $name, 1)['data'];
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} catch (JsonAppMissingKeysException $e) {
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$docker_data = $e->getParsedJson();
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} catch (JsonAppException $e) {
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echo PHP_EOL . $name . ':' . $e->getCode() . ':' . $e->getMessage() . PHP_EOL;
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update_application($app, $e->getCode() . ':' . $e->getMessage(), []); // Set empty metrics and error message
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return;
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}
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$rrd_name = ['app', $name, $app_id];
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$rrd_def = RrdDefinition::make()
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->addDataset('cpu_usage', 'GAUGE', 0, 100)
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->addDataset('pids', 'GAUGE', 0)
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->addDataset('mem_perc', 'GAUGE', 0, 100)
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->addDataset('mem_used', 'GAUGE', 0)
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->addDataset('mem_limit', 'GAUGE', 0);
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$metrics = [];
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foreach ($docker_data as $data) {
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$container = $data['container'];
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$rrd_name = ['app', $name, $app_id, $container];
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$fields = [
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'cpu_usage' => (float) $data['cpu'],
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'pids' => $data['pids'],
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'mem_perc' => (float) $data['memory']['perc'],
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'mem_used' => convertToBytes($data['memory']['used']),
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'mem_limit' => convertToBytes($data['memory']['limit']),
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];
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$metrics[$container] = $fields;
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$tags = ['name' => $container, 'app_id' => $app_id, 'rrd_def' => $rrd_def, 'rrd_name' => $rrd_name];
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data_update($device, 'app', $tags, $fields);
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}
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update_application($app, $output, $metrics);
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