# Ops.Cafe

> ops.cafe is a blog about operations, infrastructure, and the craft of keeping systems running.

Author: Denis-Florin Rendler — Romania / Europe. Canonical site: https://ops.cafe.

## Notes

- [When Every Second Counts: SMS Alerting When Your Network Goes Down](https://ops.cafe/notes/sms-alerting-when-network-goes-down/): Build a bulletproof out-of-band alerting system using a USB modem. Perfect for homelabs and remote sites where network connectivity is unreliable and you need alerts that work even when everything else is down.
- [Using Proxmox SDN for building a Active Directory lab](https://ops.cafe/notes/use-proxmox-sdn-ad-lab/): Learn how to leverage Proxmox SDN to create a robust Active Directory lab environment. This guide covers the essential steps for setting up your lab using Proxmox's software-defined networking capabilities.
- [Building Next-Gen Infrastructure: Self-Service Platforms with Event-Driven Architecture](https://ops.cafe/notes/nextgen-infra-event-driven-architecture/): Transform your infrastructure management with this practical approach to automation. Learn how to use Netbox and Event-Driven Ansible to create a self-service platform that maintains itself.
- [Automating the infrastructure documentation process](https://ops.cafe/notes/automate-documentation-infra/): Sharing my process for automatically documenting new virtual environment created, be it a container or full virtual machines, along with all its components.
- [Terraform / OpenTofu efficient variables management](https://ops.cafe/notes/opentofu/opentofu-variables-tips/): This note provides a guide to validation, dependencies, and data organization for better Terraform/OpenTofu development experiences
- [My Journey Automating Proxmox Infrastructure with Terraform](https://ops.cafe/notes/manage-proxmox-lxc-terraform/): Managing LXC containers in Proxmox is easier using Terraform. Using a modular design and workspaces we can keep IaC code manageable and user experience fun.
- [OpenTofu - Infrastructure configuration management](https://ops.cafe/notes/opentofu/opentofu-infrastructure-config-management/): OpenTofu's advanced features like workspaces, modules, and data transformations enable efficient infrastructure management through better organization and code reusability.
- [Keeping secrets from your pipelines](https://ops.cafe/notes/keeping-secrets-from-pipelines/): Explore how a custom REST API leveraging the Keeper Secrets Manager SDK can transform your CI/CD secret management, providing a seamless and secure development pipeline.
- [Designing Security Workflows using Gitlab CI Templates](https://ops.cafe/notes/designing-security-workflows-using-gitlab-ci-templates/): Design and implementation of security templates that are reusable, easy to use and manage is easy using Gitlab's CI/CD template system
- [Hardening Docker with OPA and Harbor](https://ops.cafe/notes/docker-chronicles/hardening-docker-using-opa-harbor/): Technical implementation steps for my article on Securing Docker with OPA and Harbor
- [Enhancing Security Through Minimalism and Simple Configuration](https://ops.cafe/notes/docker-chronicles/security-through-minimalism-simple-configuration/): Docker security

## Projects

- [Ansible Collection: rendler](https://github.com/rendler-denis/ansible-rendler-collection): A repository with my Ansible collections.
- [TF-Mod-Netbox](https://github.com/rendler-denis/tf-mod-netbox): An OpenTofu / Terraform module to manage the Netbox configuration via IaC.
- [TF-Proxmox-Mod](https://github.com/rendler-denis/tf-proxmox-mod): A Terraform module to manage Proxmox LXC containers via IaC.

## Feeds & machine-readable sources

- [Full text for LLMs](https://ops.cafe/llms-full.txt)
- [RSS feed](https://ops.cafe/rss.xml)
- [Sitemap](https://ops.cafe/sitemap-index.xml)