All posts by Paja Aleksic

Setting up a Cluster With Proxmox

Clustering is a technique to group together multiple machines or devices providing common parameters, such as storage, over all machines in the cluster. Proxmox can be clustered to provide a common interface to control all machines in the cluster. Automatic failover of machines can also be achieved with a Proxmox cluster however this requires significant […]

Fix package com.android.annotations does not exist

Here is how to automatically fix all android to androidx issues for React Native. 1. Please check that you have NPX installed and if not, install it with: npm install -g npx 2. Add the following two flags to true in your gradle.properties file at ProjectFolder/android/gradle.properties android.useAndroidX=true android.enableJetifier=true 3. Execute these lines: npm install –save-dev […]

NGINX Let’s Encrypt Certbot Manual Installation

If you’re trying to update an outdated SSL certificate or even if you’re installing one for the first time and you don’t trust Certbot to modify your NGINX config for you then this article is for you. Install Certbot sudo apt-get update sudo apt-get install software-properties-common sudo add-apt-repository ppa:certbot/certbot sudo apt-get update sudo apt-get install […]

React Native Publishing an Android App

Add/Create Keystore This command will create a keystore with the given name if the file doesn’t exist or append a key to a current keystore. keytool -genkey -v -keystore mykeystore.keystore -alias mykeyalias -keyalg RSA -keysize 2048 -validity 10000 After you have generated the mykeystore.keystore file copy it to android/app. Setting up gradle variables Append the snippet […]

Converting between virtual image formats

qemu-img convert: raw, qcow2, qed, vdi, vmdk, vhd¶ The qemu-img convert command can do conversion between multiple formats, including qcow2, qed, raw, vdi, vhd, and vmdk. qemu-img format strings¶ Image format Argument to qemu-img QCOW2 (KVM, Xen) qcow2 QED (KVM) qed raw raw VDI (VirtualBox) vdi VHD (Hyper-V) vpc VMDK (VMware) vmdk This example will convert a raw image file named image.img to a qcow2 […]

Proxmox Networking

This time, I would like to show how Proxmox networking configuration can be configured. In my last post, I showed, how to install Proxmox and get ready to create VM’s. I will show a typical configuration, which I always use. The official documentation can be found here: Proxmox Network Model I will show, how to configure the network connection […]