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Support multiple Alertmanager URLs (#12346)

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This commit is contained in:
Filippo Giunchedi
2021-03-27 16:01:48 +01:00
committed by GitHub
parent 6a602794c6
commit c8c8bc3a81
2 changed files with 51 additions and 17 deletions
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59
LibreNMS/Alert/Transport/Alertmanager.php
View File

@@ -35,7 +35,7 @@ class Alertmanager extends Transport
return $this->contactAlertmanager($obj, $alertmanager_opts);
}
public static function contactAlertmanager($obj, $api)
public function contactAlertmanager($obj, $api)
{
if ($obj['state'] == AlertState::RECOVERED) {
$alertmanager_status = 'endsAt';
@@ -43,8 +43,6 @@ class Alertmanager extends Transport
$alertmanager_status = 'startsAt';
}
$gen_url = (Config::get('base_url') . 'device/device=' . $obj['device_id']);
$host = ($api['url'] . '/api/v2/alerts');
$curl = curl_init();
$alertmanager_msg = strip_tags($obj['msg']);
$data = [[
$alertmanager_status => date('c'),
@@ -61,26 +59,59 @@ class Alertmanager extends Transport
],
]];
$url = $api['url'];
unset($api['url']);
foreach ($api as $label => $value) {
$data[0]['labels'][$label] = $value;
}
$alert_message = json_encode($data);
curl_setopt($curl, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
return $this->postAlerts($url, $data);
}
public static function postAlerts($url, $data)
{
$curl = curl_init();
set_curl_proxy($curl);
curl_setopt($curl, CURLOPT_URL, $host);
curl_setopt($curl, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_TIMEOUT, 5);
curl_setopt($curl, CURLOPT_TIMEOUT_MS, 5000);
curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 5);
curl_setopt($curl, CURLOPT_CONNECTTIMEOUT_MS, 5000);
curl_setopt($curl, CURLOPT_POST, true);
$alert_message = json_encode($data);
curl_setopt($curl, CURLOPT_POSTFIELDS, $alert_message);
$ret = curl_exec($curl);
$code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
if ($code != 200) {
return 'HTTP Status code ' . $code;
foreach (explode(',', $url) as $am) {
$post_url = ($am . '/api/v2/alerts');
curl_setopt($curl, CURLOPT_URL, $post_url);
$ret = curl_exec($curl);
if ($ret === false || curl_errno($curl)) {
logfile("Failed to contact $post_url: " . curl_error($curl));
continue;
}
$code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
if ($code == 200) {
curl_close($curl);
return true;
}
}
return true;
$err = "Unable to POST to Alertmanager at $post_url .";
if ($ret === false || curl_errno($curl)) {
$err .= ' cURL error: ' . curl_error($curl);
} else {
$err .= ' HTTP status: ' . curl_getinfo($curl, CURLINFO_HTTP_CODE);
}
curl_close($curl);
logfile($err);
return $err;
}
public static function configTemplate()
@@ -88,9 +119,9 @@ class Alertmanager extends Transport
return [
'config' => [
[
'title' => 'Alertmanager URL',
'title' => 'Alertmanager URL(s)',
'name' => 'alertmanager-url',
'descr' => 'Alertmanager Webhook URL',
'descr' => 'Alertmanager Webhook URL(s). Can contain comma-separated URLs',
'type' => 'text',
],
[
@@ -101,7 +132,7 @@ class Alertmanager extends Transport
],
],
'validation' => [
'alertmanager-url' => 'required|url',
'alertmanager-url' => 'required|string',
],
];
}

9
doc/Alerting/Transports.md
View File

@@ -62,17 +62,20 @@ of alerts of similar content for an array of hosts, whereas
Alertmanager can group them by alert meta, ideally producing one
single notice in case an issue occurs.
It is possible to configure as much label values as required in
Alertmanager Options section. Every label and it's value should be
It is possible to configure as many label values as required in
Alertmanager Options section. Every label and its value should be
entered as a new line.
Multiple Alertmanager URLs (comma separated) are supported. Each
URL will be tried and the search will stop at the first success.
[Alertmanager Docs](https://prometheus.io/docs/alerting/alertmanager/)
**Example:**
| Config | Example |
| ------ | ------- |
| Alertmanager URL | http://alertmanager.example.com |
| Alertmanager URL(s) | http://alertmanager1.example.com,http://alertmanager2.example.com |
| Alertmanager Options: | source=librenms <br/> customlabel=value |
## API