Blog Entries

07. 08. 2023 Alessandro Romboli Business Service Monitoring, ITOA, NetEye

From Icinga 2 Monitoring to ITOA

Scenario NetEye 4 is a comprehensive monitoring platform which natively supports Icinga 2 checks on remote hosts and devices. Several Icinga 2 checks support an historical view of the status. An example is the firewall interface performance status below, which displays a Performance Graph: Getting a better overview All the graph data generated by the…

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09. 06. 2023 Giuseppe Di Garbo ITOA, NetEye

Monitoring, Collection of Metrics and Dashboard of the NetEye Database

As you all know NetEye uses MariaDB as its database. With the nep-monitoring-core module of the NetEye Extension Packs (NEP), the following aspects of MariaDB are monitored: These checks are performed with a default time interval (check_interval) of 180s. To have real time control of many aspects of the MariaDB database operation, I suggest installing…

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03. 05. 2023 Davide Sbetti Anomaly Detection, ITOA, NetEye

A Simple Grafana Data Source for Outlier Detection (POC) – Part 2

In my previous post, we saw how it’s possible to build a simple Grafana Data Source Plugin, which we can use to read data from whatever source we’d like to use. In particular, we used it to read data from a simple web service we created so we could expose data containing some outliers. In…

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27. 04. 2023 Tobias Goller Anomaly Detection, Unified Monitoring

Alerting on Network Traffic Anomalies with ntopng

Today I’d like to tell you about the possibility of alerting when anomalies in network traffic are encountered. I use ntopng to generate, evaluate and forward these alerts. If you don’t know about ntopng, let me briefly describe for you what it does. According to its creator, ntopng is a High-Speed Web-based Traffic Analysis and…

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27. 03. 2023 Davide Sbetti Anomaly Detection, ITOA, NetEye

A Simple Grafana Data Source for Outlier Detection (POC) – Part 1

In this article, I’d like to step through the development of a simple Proof of Concept (POC) Grafana data source with you where we retrieve data from an API, apply an outlier detection technique, and then visualize the end results in a dashboard. So… let’s begin! Note: All the code discussed in this blog post…

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23. 12. 2022 Valentina Da Rold Development, ITOA, NetEye

Configuring ClickHouse as an Additional Data Source in Grafana

As mentioned in my colleague Mattia’s blog, NetEye 4.27 comes with a ClickHouse database pre-installed.If you follow that post, you will be able to customize NetEye in order to save data inside a ClickHouse database. Your data is now ready to be visualized on a dashboard, and you can accomplish this by configuring the ClickHouse…

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22. 12. 2022 Andrea Mariani ITOA, NetEye

Exporting Grafana Graphs to CSV

Some time ago, a customer asked me if it was possible to export the data used by NetEye 4 Performance Graphs to CSV format. In particular, the performance graphs that are displayed within Icinga 2’s web interface currently have no option to export their data. After some research, I found that the only way to…

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02. 11. 2022 Mirko Morandini ITOA, NetEye

Creating Compelling Stacked Bar Charts with Grafana

Grafana is an open source data visualization application that is widely used for displaying interactive monitoring and service dashboards. It focuses on a high-performance visualization of time series data, such as network throughput, access time, or CPU performance data. For this, it connects to specific time series databases such as InfluxDB, but also to common…

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21. 10. 2022 Giuseppe Di Garbo Icinga Web 2, ITOA, NetEye

A Custom Dashboard for Windows and Linux Servers

The performance graphs present in NetEye are very useful for getting an immediate idea of the trend related to a service check, but they’re still limited to the metric being viewed. Also, the “Show all graphs” option available from the Actions menu of each monitored Host can have different usage limits due to the presence…

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03. 10. 2022 Davide Gallo ITOA, NetEye

Using Multiple Retention Policies in InfluxDB

By default all metrics in InfluxDB are stored forever, but for certain metrics we need to store them for a much shorter time span. One example is when we’re receiving very large amounts of raw data, when we’re much more interested in derived characteristics of that raw data. In this blog we’ll discuss how to…

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13. 06. 2022 Giovanni Davide Saccá ITOA, NetEye, Unified Monitoring

Grafana for nTop: Realizing a Dashboard

A customer with a NetEye installation to which I had added the nTop module asked me if I could integrate nTop’s Grafana Dashboards, so they could view them by consulting NetEye’s ITOA Menu. The installation and configuration of nTop for this client, a task I had already conducted some time ago, was a matter of…

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27. 05. 2022 Alessandro Romboli ITOA, NetEye

The Flux Language Inside ITOA

ITOA ITOA is the NetEye component which represents time series data using the Grafana graphics engine. Data is usually collected by Telegraf agents and stored into an InfluxDB specialized non-relational database. Flux In order to manipulate the time series data, Grafana usually adopted a relational language: InfluxQL. The relational approach has had a number of…

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22. 03. 2022 Juergen Vigna ITOA, NetEye, Unified Monitoring

Monitoring Fortigate Firewall SLA Trackers

Recently a customer told me he would like to monitor and graph the values that his Fortigate Firewall was generating for his configured SLA Trackers. What are these SLA Trackers? I informed myself and found the following in a Fortigate Cookbook. Fortigate Performance SLA ─ Link Monitoring Performance SLA link monitoring measures the health of…

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29. 12. 2021 Giuseppe Di Garbo ITOA, NetEye

Business Processes and Dashboards

The Business Process module is one of the most useful modules in NetEye, but it’s often underestimated. A Business Process offers a way to model relations between monitored objects by NetEye (host and services), allowing you to model applications or infrastructures. They also allow you to drill down into the details, from high-level services to…

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06. 12. 2021 Rocco Pezzani ITOA, NetEye, Unified Monitoring

Metrics on NetEye Monitoring

(Or, Who’s Monitoring the Monitor?) Everyone uses a monitoring system to understand what’s going on in their own environment and how it performs, but what about the monitoring system itself? The monitoring system also has its own tasks to perform, and obviously its own needs. Therefore even NetEye itself, while performing its duties, can be…

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