credativ® Blog
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Category: HowTos
09 April 2024
Migrating VMs from VMware ESXi to Proxmox
Migrating VMs from VMware ESXi to Proxmox In response to Broadcom’s recent alterations in VMware’s subscription model, an increasing number of enterprises are reevaluating their virtualization strategies. With heightened concerns over licensing costs and accessibility to features, businesses are turning towards open source solutions for greater flexibility and cost-effectiveness. Proxmox, in particular, has garnered significant […]
08 March 2022
SQLreduce: Reduce verbose SQL queries to minimal examples
SQLreduce: Reduce verbose SQL queries to minimal examples Developers often face very large SQL queries that raise some errors. SQLreduce is a tool to reduce that complexity to a minimal query. SQLsmith generates random SQL queries SQLsmith is a tool that generates random SQL queries and runs them against a PostgreSQL server (and other DBMS […]
10 December 2020
Create QR Codes for TOTP Secrets
In the article Two-Factor Authentication for OpenSSH and OpenVPN, a simple way was presented to increase the security of PAM-enabled services through two-factor authentication. With the TOTP method used, a time-limited one-time password is generated based on a shared secret. Depending on the method and encoding, the shared secret consists of 32 or even 40 […]
30 April 2020
tmate - Efficient remote maintenance and data sovereignty
Editor’s note, as of 2025-08-27: tmate.io and the tmate project have not been updated since fall 2019, so security vulnerabilities that may have arisen since then may not have been addressed. The tool is no longer recommended. Especially in the current situation surrounding COVID-19, a functioning remote maintenance/remote control solution is extremely important. It has […]
14 January 2020
Debian integration of Patroni and vip-manager
Patroni is a clustering solution for PostgreSQL® that is getting more and more popular in the cloud and Kubernetes sector due to its operator pattern and integration with Etcd or Consul. Some time ago we wrote a blog post about the integration of Patroni into Debian. Recently, the vip-manager project which is closely related to […]