Category: Linux
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Ubuntu (Linux) CLI Cheat Sheet
As we’ve been utilising more IP in our production systems there has been an increasing need to work with Linux. I’ve attached a handy cheat sheet which is provided with Ubuntu with some of the basic CLI commands to get you going.
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Firewall Rules on Linux
There are a few different ways of configuring firewall rules in the various flavours of Linux that we run.
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Monitor Temperature and Humidity with Zabbix
Temperature and humidity will have a substantial effect on the lifespan of your hardware. Almost all computers and servers have several temperature sensors for gathering component or ambient temperatures. Humidity sensors though, are often overlooked. With very few and inexpensive components, we can monitor both in Zabbix.
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Enabling and Accessing a Raspberry Pi using SSH.
Secure Shell (SSH) is a cryptographic network protocol used for a secure connection between a client and a server. In the recent versions of Raspberry Pi OS, the SSH access is disabled by default but it can be easily enabled. Here we are going to show you how to enable SSH on a Raspberry Pi…
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Zabbix Proxy: Install on Ubuntu 20.04 / 18.04
Zabbix proxy is a service that can collect performance and availability data from the end devices on behalf of the Zabbix server. You can use Zabbix proxy to monitor remote locations behind the firewall or locations that have unreliable communication and to offload the Zabbix server in large environments.
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Install Zabbix 5.0 or 5.2 on Ubuntu 20.04 / 18.04 [Step-by-Step]
Note: You need to log in as a root user on your Linux server with “su -” or use “sudo” to successfully execute commands used in this tutorial. Step 1: Install Zabbix server, frontend, and agent Install Zabbix 5 .deb package on your Ubuntu OS (Ubuntu 20.04 Focal and Ubuntu 18.04 Bionic are supported). Choose 5.0 LTS release (stable, 5-year support)…
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Shutting Down a Linux Server
In this post we will look at how to use the shutdown command through practical examples and detailed explanations of the most common shutdown options.
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Pi Multicast Test Box
Some notes on default settings for these boxes User: ubuntu Password: Creat1ve Default IP: 192.168.21.10/16 – this is set statically on the box. Default Multicast Address: udp://239.192.254.254:5000 SSH is turned on so you can remote administer it and all the content files and streaming script are located in ~/ubuntu which also happens to be the…
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Setting a Script as a Service on Linux
Sometimes you want to get a script to run automatically on boot of a server, this means setting up a service to call the script.
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Installing NextCloud on Ubuntu 18.0.4
This article will guide you through the installation and configuration of NextCloud so it can be used as file storage portal for clients. The customisation of the website and apps are only briefly covered as this is well documented on the NextCloud site.