Linux Screen Cheatsheet Rumi, February 11, 2023July 3, 2024 To create a screen screen List all the detached (running) screens with their screen IDs. screen -list Connect / Attach to a specific running screen. screen -x [screen id] While in a screen to Terminate / Stop a screen from running. Ctrl + D While in a screen to detach… Continue Reading
Force stop xen vm using command line Rumi, February 6, 2023July 8, 2023 Instructions Disable High Availability (HA) so you don’t run into issues. Log into the Xenserver host that is running your VM with issues via ssh or console via XenCenter. Run the following command to list VMs and their UUIDs xe vm-list resident-on=<uuid_of_host> First you can try just the normal shutdown… Continue Reading
Perfect Proxmox Template with Cloud Image and Cloud Init Rumi, January 28, 2023January 30, 2023 Instructions Choose your Ubuntu Cloud Image. Here in this example will use ubuntu cloud-init image. Download Ubuntu (replace with the url of the one you chose from above) wget https://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-amd64.img Create a new virtual machine qm create 8000 –memory 2048 –core 2 –name ubuntu-cloud –net0 virtio,bridge=vmbr0 Import the downloaded Ubuntu… Continue Reading
pfSense firewall rules for WhatsApp Rumi, January 28, 2023 For simplicity, you can also follow the step by step instructions from your pfSense WebGUI below: 1. Create a PORT alias: Firewall -> Aliases -> Ports -> + AddName: WhatsAppPortsTCP Port: 443 -> + Add PortPort: 5222 Save (bottom) -> Apply Changes (top right) 2. Create a URL alias: Firewall -> Aliases –… Continue Reading
Install Softether VPN Client on Linux Rumi, January 28, 2023January 28, 2023 Download and Install SoftEther VPN Client Download SoftEther VPN Client software from their official website (https://www.softether.org). Navigate to Download — > Download SoftEther VPN Click on Download SoftEther VPN link. Select Component : SoftEther VPN Client Select Platform : Linux Select CPU : Select the appropriate CPU from the Drop… Continue Reading
Import and Export Xen VM a.k.a XCP-NG Rumi, January 27, 2023 Print virtual machine list xe vm-list uuid ( RO) : 43dfac04-515e-7769-b2d2-444d4b7cb198 name-label ( RW): hk-zabbix-01 power-state ( RO): halted Check the mount disk Continue Reading
OCI Architecture Diagram Toolkits Rumi, January 27, 2023 Oracle Cloud Infrastructure (OCI) Architecture Diagram Toolkit in three formats: PowerPoint draw.io Visio Use these assets to draw custom architecture diagrams for your OCI implementation. Each of these formats contains OCI service icons and templates where possible. Examples and guidance on how to create diagrams for your specific cloud deployment… Continue Reading
Remove Old Unused Kernels in CentOS Rumi, January 26, 2023 To display the current version of Linux (kernel) running on your system, run this command. # uname -sr Linux 3.10.0-327.10.1.el7.x86_64 List All Installed Kernels on System You can list all kernel images installed on your system like this. # rpm -q kernel kernel-3.10.0-229.el7.x86_64 kernel-3.10.0-229.14.1.el7.x86_64 kernel-3.10.0-327.3.1.el7.x86_64 kernel-3.10.0-327.10.1.el7.x86_64 Removing Old/Unused Kernels on… Continue Reading
Zimbra Let’s Encrypt auto-renew SSL Rumi, January 26, 2023 Required for this script to work is certbot package installed on email server and sudo rights to add script in crontab. You can add script in crontab at a weekly run like this: 0 0 * * 0 root /path_to_script. #!/bin/bash #Set domain for renew (in format openthreat.ro) DOMAIN=”” certbot… Continue Reading