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This article is part of our Academy Course titled Nagios Tutorial for IT Monitoring. In this course, we provide a compilation of Nagios tutorials that will help you set up your own monitoring infrastructure. We cover a wide range of topics, from installation and configuration, to plugins and NRPE. With our straightforward tutorials, you will be able to get your ...

Recent adventures in Zapierland had me in a somewhat scary predicament. Starting at some point last week I’d get an alert that the Elasticsearch cluster we run Graylog against had hit very high CPU, load and memory usage. I was confused… we had more than enough horsepower to handle queries and normally the cluster only uses about 10% of CPU ...

The network configuration is one of the first topics a system administrator gets involved with. For Linux, the command to configure this is ifconfig (contraction of interface and configuration), which allows to make almost any configuration in a network, as we will see in this tutorial. Basic knowledge about networking (what IP addresses are, their format, subnetting, etc.) is assumed ...

This article is part of our Academy Course titled Nagios Tutorial for IT Monitoring. In this course, we provide a compilation of Nagios tutorials that will help you set up your own monitoring infrastructure. We cover a wide range of topics, from installation and configuration, to plugins and NRPE. With our straightforward tutorials, you will be able to get your ...

Linux find command is a powerful and flexible search tool that not only every system administrator must master, but also any kind of Linux user. This tutorial will show how to use it to perform almost any type search with this useful command. For this tutorial, Linux Mint 17.3 and find 4.4.2 have been used. 1. Find by file name The ...

This article is part of our Academy Course titled Nagios Tutorial for IT Monitoring. In this course, we provide a compilation of Nagios tutorials that will help you set up your own monitoring infrastructure. We cover a wide range of topics, from installation and configuration, to plugins and NRPE. With our straightforward tutorials, you will be able to get your ...

This article is part of our Academy Course titled Nagios Tutorial for IT Monitoring. In this course, we provide a compilation of Nagios tutorials that will help you set up your own monitoring infrastructure. We cover a wide range of topics, from installation and configuration, to plugins and NRPE. With our straightforward tutorials, you will be able to get your ...

Adding ssl support to a relational database like mysql or postgresql is a standard task. First we need to have our certificates ready. We can either use mysql workbench which has a nice wizard. Or we can create them using openssl. In the end we will end up with three files ssl-ca=ca.pem ssl-cert=server-cert.pem ssl-key=server-key.pem We can also check that everything is ok ...

Sometimes you find yourself in a weird predicament. A third party application that you’ve slapped nginx in front of insists on using internal IP addresses or ports despite your reverse proxy passing all the correct headers and other pieces required. Or maybe you’ve found yourself in the situation I found myself in last week where you have a third party ...