The following error shows up when checking a zpool group. This article describes the issue.
admin
Rsync Files Locally
How to copy to local directory with the same name.
No Pub Key Mysql on Apt update Debian 11 with MySQL 8
Error on update with Debian 11 and MySql 8. On apt update… Now Run… Then update
How to Remove “You do not have a valid subscription for this server.”
Proxmox VE is a complete open-source platform for enterprise virtualization. It’s a great application for virtualization that can compete with VMware, Hyper-V, KVM and Xen. Once installed, you would login to the built-in web interface to manage VMs and containers. So, you have installed Proxmox and when you login you see a pop-up error message: … Read more
How to Switch Desktop Environments in Ubuntu/Debian From the Command Line
Switching Between Desktop Environments To switch between desktop environments on a Debian based distro run the following command: Then you should be presented with the desktop environments you have installed on your system so you can choose one of them: There are 7 choices for the alternative x-session-manager (providing /usr/bin/x-session-manager). Selection Path Priority Status ———————————————————— … Read more
NetworkManager
In Ubuntu 21.04, you will not see and files at /etc/network/interfaces. Also, in checking /etc/neteplan/01-network-manager-all.yaml there is a message: Change to static IP address if you use Ubuntu as a server. The interface name [enp1s0] is different on each environment, replace it to your own one. Rename to disable default setting Create new Edits: # … Read more
Install and Configure fail2ban on Debian 11
Fail2ban is an intrusion prevention software framework that protects computer servers from primarily brute-force attacks, banning bad user agents, banning URL scanners, and much more.
ApacheSolr vulnerability CVE-2021-44228 for Log4j
A vulnerability in Apache Log4j, a widely used logging package for Java has been found. The vulnerability, which can allow an attacker to execute arbitrary code by sending crafted log messages, has been identified as CVE-2021-44228 and given the name Log4Shell. It was first reported privately to Apache on November 24 and was patched with version 2.15.0 of Log4j on December 9. It affects Apache Struts, Apache Solr, Apache Druid, Elasticsearch, Apache Dubbo, and VMware vCenter. Since then, it has been disclosed that in certain non-default conditions, the original patch was incomplete; this was designated as CVE-2021-45046 and a new version of Log4j, 2.16.0, has been released.
Install Proxmox VE on Debian 11 Bullseye 3 Node Cluster with Ceph
The installation of a supported Proxmox VE server should be done via bare-metal ISO installer. In some cases it makes sense to install Proxmox VE on top of a running Debian Bullseye 64-bit, especially if you want a custom partition layout. For this How-To any official Bullseye installation medium should work.
For this Demo, I am installing 3 KVM VM’s. As you can do VM nesting. Also, you can do this on Vmware or Hyper V. Here is the Architecture.
Display Linux Logo with Hardware Info Using Screenfetch or Neofetch
ScreenFetch and Neofetch ares a system information tools designed primarily for Bash Shell but function with other shell environment as well. The tools are smart enough to auto-detect the Linux distribution you are using and generate the ASCII logo of the distribution with certain valuable information to the right of logo. They are also cool to look at on login.