Librenms latency alert

Post a Comment. Step It's includes support for a wide range of network hardware and operating systems like Cisco, Linux, juniper and many more. Customisable Alerting :. Highly flexible alerting system, notification via email, irc, slack and more.

API Access :.

librenms latency alert

A full API to manage graph and retrieve data from our install. NfSen :. NfSen is a graphical web based front end for the nfdumb netflow tools. NfSen allows. Process the netflow data within the specified time span. Create history as well as continious profiles. Set alerts, based on various conditions. Write our own plugin to process netflow data on a regular interval For more details click here. Collectd :. Collectd is a daemon which collects system and application performance metrics periodically and provides mechanisms to store the variety of ways.

It gathers metrics from various sources like OS, Applications, Log, and external device and stores this information or make it available over the network. It will help us to monitor systems and find the performance bottlenecks also it predict system load of future. For more details click here. SmokePing keeps track of our network latency.

librenms latency alert

Oxidized :. Oxidized is a network device configuration backup tool. Multiple authentication methods :. Installation :. For LibreNMS installation we need root privilege. In rhel 7 have mariadb instead of mysql in official repo. Step 1. Install mariaDB :. TO 'librenms' 'localhost'.

Transports

Step 2.Creating more complicated rules which may include maths calculations and MySQL queries can be done using macros. Rules must consist of at least 3 elements: An Entitya Condition and a Value. Rules can contain braces and Glues. Entities are provided from Table and Field from the database. For Example: ports. Values can be an entity or any data. If using macros as value you must include the macro name into backticks. The 10 would then contain the average CPU usage value, you can change this value to be whatever you like.

You can associate a rule to a procedure by giving the URL of the procedure when creating the rule. You can also select Alert Rule from the Alerts Collection. These Alert Rules are submitted by users in the community : If would like to submit your alert rules to the collection, please submit them here Alert Rules Collection. LibreNMS Docs. The GUI provides a simple way of creating rules. Arithmetics are allowed as well.

Options Here are some of the other options available when adding an alerting rule: Rule name: The name associated with the rule. Severity: How "important" the rule is. Max alerts: The maximum number of alerts sent for the event. Delay: The amount of time in seconds to wait after a rule is matched before sending an alert out transport. Interval: The interval of time in seconds between alerts for an event until Max alert is reached.

Mute alerts: Disables sending alert rule through alert transport. But will still show the alert in the Web UI.The simplest way of testing if an alert rule will match a device is by going to the device, clicking edit the cogselect Capture.

From this new screen choose Alerts and click run. The output will cycle through all alerts applicable to this device and show you the Rule name, rule, MySQL query and if the rule matches. You can test your transports by forcing an actual active alert to run regardless of the interval or delay values. This script accepts -r for the rule id, -h for the device id or hostname and -d for debug. It's possible to test your new template before assigning it to a rule.

To do so you can run. The script will provide the help info when ran without any parameters. As an example, if you wanted to test template ID 10 against localhost running rule ID 2 then you would run:. If the rule is currently alerting for localhost then you will get the full template as expected to see on email, if it's not then you will just see the template without any fault information.

LibreNMS Docs. Table of contents Rules Transports Templates Source. See Device Troubleshooting Transports You can test your transports by forcing an actual active alert to run regardless of the interval or delay values.

Introduction

Templates It's possible to test your new template before assigning it to a rule.Contacts will be gathered automatically and passed to the configured transports. By default the Contacts will be only gathered when the alert triggers and will ignore future changes in contacts for the incident. If you want contacts to be re-gathered before each dispatch, please set 'Updates to contact email addresses not honored' to Off in the WebUI. To include users that have Global-ReadAdministrator or Normal-User permissions it is required to toggle the options:.

You need to install an additional php module : bcmath eg php72w-bcmath for Centos 7.

[LibreNMS] Add an alert rule using wildcards

Alertmanager is an alert handling software, initially developed for alert processing sent by Prometheus. It has built-in functionality for deduplicating, grouping and routing alerts based on configurable criteria.

LibreNMS uses alert grouping by alert rule, which can produce an array 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 entered as a new line. It can be used in multiple ways:. The example below will use the API named sms-api of my. Refer to your service documentation to configure it properly.

The example below will use the API named wall-display of my. The example below will use the API named component of my. Copy your access token from the Boxcar app or from the Boxcar. Canopsis is a hypervision tool.

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LibreNMS can send alerts to Canopsis which are then converted to canopsis events. Cisco Spark now known as Webex Teams. To make this possible you need to have a RoomID and a token. You can also choose to send alerts using Markdown syntax.

Enabling this option provides for more richly formatted alerts, but be sure to adjust your alert template to account for the Markdown syntax.

Clickatell Docs. Simple html tags are stripped from the message. The only required value is for url, without this no call to Discord will be made. Discord Docs. You can have LibreNMS send alerts to an elasticsearch database. Each fault will be sent as a separate document.

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LibreNMS will create issues for warning and critical level alerts however only title and description are set. Uses Personal access tokens to authenticate with Gitlab and will store the token in cleartext.

You may notice that the link points at the "deprecated" v1 API. This is because the v2 API is still in beta.To get started, you first need some alert rules which will react to changes with your devices before raising an alert.

After that you also need to tell LibreNMS how to notify you when an alert is raised, this is done using Alert Transports. The next step is not strictly required but most people find it useful. Creating custom alert templates will help you get the benefit out of the alert system in general.

Whilst we include a default template, it is limited in the data that you will receive in the alerts. This alert is currently active and sending alerts. Click this icon to acknowledge the alert. This alert is currently acknowledged until the alert clears. Click this icon to un-acknowledge the alert.

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This alert is currently acknowledged until the alert worsens or gets better, at which stage it will be automatically unacknowledged and alerts will resume. LibreNMS Docs. Creating alert rules After that you also need to tell LibreNMS how to notify you when an alert is raised, this is done using Alert Transports. Configuring alert transports The next step is not strictly required but most people find it useful.

This list has a couple of options available to it and we'll explain what these are here. ACK This column provides you visibility on the status of the alert: This alert is currently active and sending alerts.These machines can be in a different physical location and therefore minimize network latency for devices that are a considerable distance away or are behind NAT firewalls.

It is a requirement that all pollers can access the central memcached to communicate with each other. The poller will then poll devices from any of the groups listed.

If new devices get added from the poller they will be assigned to the first poller group in the list unless the group is specified when adding the device. Below is an example setup based on a real deployment which at the time of writing covers over 2, devices and 50, ports.

The setup is running within an OpenStack environment with some commodity hardware for remote pollers. Here's a diagram of how you can scale LibreNMS out:. How you setup the distribution is entirely up to you, you can choose to host the majority of the required services on a single virtual machine or server and then a poller to actually query the devices being monitored all the way through to having a dedicated server for each of the individual roles.

Below are notes on what you need to consider both from the software layer but also connectivity.

Distributed Poller

This is typically Apache but we have setup guides for both Nginx and Lighttpd which should work perfectly fine. There is nothing unique about the role this service is providing except that if you are adding devices from this layer then the web service will need to be able to connect to the end device via SNMP and perform an ICMP test.

The web service can then generate rrd graphs via RRDCached.

librenms latency alert

Central storage should be provided so all RRD files can be read from and written to in one location. As suggested above, it's recommended that RRD Cached is configured and used. Memcache is required for the distributed pollers to be able to register to a central location and record what devices are polled.

Memcache can run from any of the servers so long as it is accessible by all pollers.

About SmokePing

You can either assign pollers into groups and set a poller group against certain devices, this will mean that those devices will only be processed by certain pollers default poller group is 0 or you can assign all pollers to the default poller group for them to process any and all devices.

This will provide the ability to have a single poller behind a NAT firewall monitor internal devices and report back to your central system. You will then be able to monitor those devices from the Web UI as normal. You could also use this to take a poller out of service for maintenance, i. It is extremely advisable to either run a central recursive dns server such as pdns-recursor and have all of your pollers use this or install a recursive dns server on each poller - the volume of DNS requests on large installs can be significant and will slow polling down enough to cause issues with a large number of devices.

It's not necessary to run discovery services on all pollers. In fact, you should only run one discovery process per poller group. Designate a single poller to run discovery or a separate server if required. Runs discovery and polling for group 0, daily. LibreNMS Docs. Here's a diagram of how you can scale LibreNMS out: Architecture How you setup the distribution is entirely up to you, you can choose to host the majority of the required services on a single virtual machine or server and then a poller to actually query the devices being monitored all the way through to having a dedicated server for each of the individual roles.

The pollers, web and API layers should all be able to access the database server directly. Memcache Memcache is required for the distributed pollers to be able to register to a central location and record what devices are polled. Discovery It's not necessary to run discovery services on all pollers.Contacts will be gathered automatically and passed to the configured transports. By default the Contacts will be only gathered when the alert triggers and will ignore future changes in contacts for the incident.

If you want contacts to be re-gathered before each dispatch, please set 'Updates to contact email addresses not honored' to Off in the WebUI.

To include users that have Global-ReadAdministrator or Normal-User permissions it is required to toggle the options:. You need to install an additional php module : bcmath eg php72w-bcmath for Centos 7.

Alertmanager is an alert handling software, initially developed for alert processing sent by Prometheus. It has built-in functionality for deduplicating, grouping and routing alerts based on configurable criteria.

LibreNMS uses alert grouping by alert rule, which can produce an array 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 entered as a new line.

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It can be used in multiple ways:. The example below will use the API named sms-api of my. Refer to your service documentation to configure it properly. The example below will use the API named wall-display of my.

The example below will use the API named component of my. Copy your access token from the Boxcar app or from the Boxcar. Canopsis is a hypervision tool. LibreNMS can send alerts to Canopsis which are then converted to canopsis events. Cisco Spark now known as Webex Teams. To make this possible you need to have a RoomID and a token. You can also choose to send alerts using Markdown syntax.

Enabling this option provides for more richly formatted alerts, but be sure to adjust your alert template to account for the Markdown syntax. Clickatell Docs.

Simple html tags are stripped from the message. The only required value is for url, without this no call to Discord will be made. Discord Docs. You can have LibreNMS send alerts to an elasticsearch database. Each fault will be sent as a separate document. LibreNMS will create issues for warning and critical level alerts however only title and description are set. Uses Personal access tokens to authenticate with Gitlab and will store the token in cleartext.


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