This article introduces the cluster management tool pvecm of Proxmox VE, including how to create, add, and remove nodes, as well as the deployment requirements for the cluster. It emphasizes that all nodes must be on the same subnet, require…

The migration process generally consists of several steps: exporting the source Gitlab data, creating a virtual machine in Proxmox VE and installing the Centos operating system, deploying the same version of Gitlab on Centos as the original server (higher versions…

The highly useful open-source monitoring system, Centreon, no longer offers an ISO one-click installation package starting from version 21.40 (including version 21.40). Instead, Centreon now provides an online script installation and virtual machine images for VMware or Oracle VirtualBox. In…

Deploying JumpServer is very easy, but due to the complexity of its components and their interdependencies, recovery can be quite cumbersome if a failure occurs. To avoid this hassle, I usually deploy JumpServer on a virtual machine in Proxmox VE…

Oracle 23c offers the following installation methods: Docker Container: Pull the container image directly from the Oracle Container Registry using `docker pull container-registry.oracle.com/database/free:latest`. Oracle VM VirtualBox: Import the 23c Free `.ova` file into your local Oracle VM VirtualBox setup. Package Manager: Configure…

Since the system is online and services cannot be stopped, this is the fundamental requirement. Fortunately, Proxmox VE’s decentralized hyper-converged cluster allows for the shutdown of any one or more physical servers while maintaining the cluster (unlike other hyper-converged platforms…