Zabbix Database Error: No such file or directory After unattended-upgrade
After unattended-upgrade automatically ran on one of my Zabbix servers, the Zabbix frontend started showing a confusing database error. When […]
Observability & Operations
Observability & Operations
Observability & Operations
Jenkins Node Reports Low Temporary Space on a Low-Memory Ubuntu 26.04 Server
After upgrading one of my Jenkins servers from Ubuntu 24.04 to Ubuntu 26.04, I noticed that the Built-In Node was
Observability & Operations
Install OpenObserve Enterprise HA on Bare-Metal Kubernetes with Traefik + Ceph RGW (S3) + Ceph RBD
This post performs a fresh installation of OpenObserve Enterprise in HA (cluster) mode on a bare-metal Kubernetes cluster using the
Observability & Operations
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.
Observability & Operations
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
Observability & Operations
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
Observability & Operations
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
Observability & Operations
Monitor Backstage with Grafana LGTM Stack using OpenTelemetry (Alloy OTLP → Mimir)
This post migrates Backstage backend monitoring from kube-prometheus-stack (ServiceMonitor + Prometheus scrape) to an LGTM-style push pipeline: Backstage (OpenTelemetry SDK)
Observability & Operations
Install Grafana Alloy on Kubernetes
This post installs Grafana Alloy on Kubernetes as a push-only OpenTelemetry gateway and exposes: We keep OTLP/gRPC (4317) enabled inside
Observability & Operations
Install Grafana on Kubernetes and connect it to Mimir + Loki + Tempo
This post installs Grafana (UI) on your Kubernetes cluster and connects it to your existing backends: Note: Grafana can connect