SysAdmin

This article will act as a guide for a procedure - how to setup NFS server on Alma Linux or in another words and how to create an NFS share on Alma Linux. NFS stands for Network File System is a network file sharing protocol that allows you to share files and directories over the network. You can mount the file systems over a network and use them as your local drive. NFS server is a client-server architecture where multiple clients can mount the shared drive from the NFS server and share resources between Linux systems. By using NFS, you can save space and the cost of storage, especially when you are using cloud instances. ...

IPtables commands cheat sheet Overview IPtables is one of the most well know firewalls(and quite effective as well) which also comes on many Linux distro’s pre-installed by default. The purpose of this post is to act as an Iptables commands cheat sheet, considering how Iptables is powerfull, it’s also has a numerous commands for many networking scenarios. Iptables uses various different table rules with multiple chains to block and allow traffic: ...

Setup Urbackup server on Ubuntu Overview The following post will showcase the steps how to setup Urbackup server on Ubuntu. By this we mean that we’ll be install Urbackup server on Ubuntu and also, we’ll show to add a client on the server and how to run a backup job. UrBackup is an Open Source client/server backup system, that through a combination of image and file backups features, differential backups and other tools can do various backup jobs while the system is running without interrupting current processes. ...

Install NFS server on Rocky linux 8[NFS share mount] Overview The post will showcase the steps how to install NFS server on Rocky linux. On another post, we covered the other method as well where we showed the process mounting the network shared drive on Linux, but with this method we used cifs-utils tools(LINK). The principle behind this process is basically the same - mount a network shared folder or drive from another machine and access it via local network. ...

How to setup Zabbix on Ubuntu 20.04 Overview Zabbix is an open source monitoring solution for diverse IT components, including networks and network devices, virtual machines, servers, and cloud services. Zabbix provides monitoring metrics for most of the components, such as CPU usage, network utilization, RAM and disk space consumption, temperatures, etc. Software can monitor operations on Linux, Mac OS, Solaris, HP-UX natively, but for Windows monitoring usage of agents is needed. When set up, Zabbix web-based GUI enables users to view their IT infrastructure via a customizable dashboard, consisting of widgets, network maps, reports, etc. In this article we will cover the process how to setup Zabbix on Ubuntu 20.04. ...

Overview On this post we are going to showcase the steps how to Install OpenVPN server on Rocky Linux 8. OpenVPN is one of the well-known and a great open-source VPN solution. The scenario of our process on how to install OpenVPN server is going to be performed as following: Deployed Rocky Linux 8 machine with firewall. We’ll be using an OpenVPN installation script from Github made by angristan(huge shutout and kudos to him for making such an amazing script). The Installation process done manually is not difficult, it actually requires many steps and can be time consuming(especially if you miss-configured a step which can consume more time by troubleshooting). For the simplicity and ease of setup we’re using the angristan’s script(big thanks to him for sharing the script). Another interesting method of deploying OpenVPN server is via Docker container. The process can be looked at this post - LINK. ...

Overview The following article will demonstrate the steps on how to create a user in Ubuntu. Also, we’ll be demonstrating how to delete user in Ubuntu and all actions we’ll be executed in terminal. Knowing how to create a user in Ubuntu and how to delete a user is one of the basic skills a Linux user(admin) should know and still one of the most important skills as well to have(user management). Reason behind this is, because in every multi user operating system(Linux as well) there are and there should be a sets of different user permissions and different user groups. This is because of security reasons. ...

Setup OpenVPN server on Ubuntu Overview On this post we are going to showcase the steps how to setup OpenVPN server on Ubuntu. OpenVPN is one of the well-known and a great open-source VPN solution. The scenario of our process on how to install OpenVPN server on Ubuntu is going to be performed as following: Deployed Ubuntu Linux machine with firewall(you can use UFW or IPTABLES. IPTABLES is used in this example). We’ll be using an OpenVPN installation script from Github made by angristan(huge shutout and kudos to him for making such an amazing script). The Installation process done manually is not difficult, it actually requires many steps and can be time consuming(especially if you miss-configured a step which can consume more time by troubleshooting). For the simplicity and ease of setup we’re using the angristan’s script(big thanks to him for sharing the script). Another interesting method of deploying OpenVPN server is via Docker container. The process can be looked at this post - LINK. ...

Setup Wireguard on Ubuntu Overview On this post we are going to showcase the steps how to setup Wireguard on Ubuntu. Wireguard is one of the well-known and a great open-source VPN solution. The scenario for our process on how to install Wireguard on Ubuntu is going to be performed as following: Deployed Ubuntu Linux machine with firewall(you can use UFW or IPTABLES. IPTABLES is used in this example). We’ll be using a Wireguard installation script from Github made by angristan. The Installation process done manually is not difficult but it can be time consuming(especially if you miss-configured a step which can consume more time by troubleshooting). For the simplicity and ease of setup we’re using the angristan’s script(big thanks to him for sharing the script). Another good method of deploying Wireguard is via Docker, meaning that we can setup and deploy wireguard VPN as Docker container. You can also check out this process on this post. ...

Overview The following post will demonstrate the steps how to create groups in Linux as well as how to delete groups in Linux and how to add user to the group and how to remove a user from the group. This is a continuation of our Linux user management post series. In one of our earlier posts, we covered the process how to create and delete users in Linux via terminal and how to add sudo privileges to the user(you can check out these procedures here - add sudo privileges, create a user). ...

Overview This post will showcase the steps how to setup NFS server on Ubuntu. On another post, we covered the other method as well where we showed the process mounting the network shared drive on Linux, but with this method we used cifs-utils tools(LINK). The principle behind this process is basically the same - mount a network shared folder or drive from another machine and access it via local network. ...

Install Zabbix on Debian 11 Overview In this article we will cover the process on how to install Zabbix on Debian 11. Zabbix is an open source monitoring solution for diverse IT components, including networks and network devices, virtual machines, servers, and cloud services. Zabbix provides monitoring metrics for most of the components, such as CPU usage, network utilization, RAM and disk space consumption, temperatures, etc. Software can monitor operations on Linux, Mac OS, Solaris, HP-UX natively, but for Windows monitoring usage of agents is needed. ...