Add an Ubuntu 24.04 Linux Server Data Source to OpenObserve
This post adds a Linux server (Ubuntu 24.04) as a data source to my existing OpenObserve standalone (local mode) deployment. […]
OpenObserve
Hands-On DevOps & Homelab Experiments
From Kubernetes and Ceph to Proxmox, Kafka, Jenkins, Vault, Android, and CI/CD, every guide here is a tested, step-by-step walkthrough from my lab.
OpenObserve
Deploy OpenObserve Standalone on Bare-Metal Kubernetes with Traefik + Ceph RBD (PVC)
This post deploys OpenObserve in standalone (single-node / local mode) on a bare-metal Kubernetes cluster using the official openobserve-standalone Helm
Backstage, Grafana
Create a Grafana Dashboard for Backstage Metrics on Mimir (OTel → Alloy → Mimir)
This post continues from: Backstage metrics flow: Backstage (OpenTelemetry SDK) → OTLP/HTTP → Alloy → remote_write → Mimir → Grafana
Ceph
Upgrade a Single-Node Ceph Squid (v19) cephadm Cluster to Tentacle (v20) on Ubuntu 24.04
…and switch from Ubuntu’s apt cephadm (v19) to a manually downloaded cephadm (v20) This post documents a practical, works-in-real-life upgrade
MariaDB, WildFly
Fix “JDBC Socket error / Connection reset by peer” in WildFly with MariaDB (Stale Connection Pool)
This post explains a common (and confusing) failure mode when running EJBCA on WildFly with MariaDB/MySQL: An exception has occurred.JDBC
EJBCA, Keycloak
Integrate EJBCA RA Web Login with Keycloak (OIDC / OAuth2)
This post documents a working setup to log in to EJBCA RA Web using Keycloak as an OpenID Connect (OIDC)
EJBCA
Install EJBCA CE on Ubuntu 24.04 with WildFly + MariaDB (no Docker)
This guide installs EJBCA Community Edition (example: r9.3.7) on Ubuntu 24.04, using WildFly as the application server and MariaDB as
Docker, Zabbix
Run Zabbix 7.4 on Docker Compose with HTTPS (No Reverse Proxy, DNS-01 Certbot, Bind Mounts Only)
This post shows a clean way to run Zabbix Server + Zabbix Web (NGINX) + MariaDB using Docker Compose, and
Jenkins, Keycloak
Why Jenkins Keeps Logging You Out (OIDC + Keycloak): Finding and Fixing the Timeout Layer
When Jenkins is authenticated by Keycloak (OIDC) and sits behind NGINX, “session timeout” is not a single knob. You can
GitHub, Teleport
Enable GitHub SSO for Teleport Community Edition
This guide enables GitHub login for a self-hosted Teleport Community Edition cluster using a GitHub OAuth App and maps GitHub