By default, Grafana allows you to sign in only with local user accounts. But you can use an LDAP database (Active Directory or FreeIPA) to authenticate users in Grafana.
Continue reading “Configure LDAP (Active Directory) Authentication in Grafana”
Category: Linux
This post is my cheat sheet for the most commonly used commands in the PostgreSQL console.
In this article, we will show you how to quickly deploy your own local deb package repository and add the necessary packages to it.
Continue reading “Create a Local Deb Package Repository on Debian”
One of the significant disadvantages of OpenVPN is its rather poor performance. This is especially noticeable at link speeds of 100+ megabits. In most cases, the performance of an OpenVPN tunnel is dependent on the chosen encryption method, its complexity, and buffer sizes.
Continue reading “How to Improve OpenVPN Performance and Throughput?”
In this article, we will look at how to install Veeam Agent for Linux on CentOS/RHEL/Rocky/Oracle Linux/Debian/Ubuntu.
The Out of Memory Killer (OOM Killer) is a mechanism in the Linux kernel that frees up RAM when it runs out of memory by forcibly killing one of the running processes.
Using SSH in a docker container is a bad practice and should be avoided. In most cases, it is recommended to use the docker exec command to get a container shell. But in some cases, you need to connect to the docker container remotely via an interactive SSH session.
By default, when connecting, OpenVPN clients receive a dynamic IP from the DHCP range that you set in the OpenVPN server configuration file (server.ovpn) server network netmask (for example, server 10.24.1.0 255.255.255.0). In some cases, you want certain OpenVPN clients to get the same static IP address every time they connect.
Continue reading “OpenVPN: Assigning Static IP Addresses to Clients”
When trying to add a PPA in Ubuntu/Debian/Mint, you may get the following error:
Continue reading “Fixing add-apt-repository not found error in Linux”
In this example, we’ll look at how to edit Linux configuration files with Ansible using sshd_config as an example. Our Ansible playbook should modify the sshd_config file and change/remove directives with insecure authentication algorithms.
Continue reading “Using Ansible to Change Config Files in Linux”