Matt Gerega

Author: Matt

  • Kubernetes Observability, Part 4 – Using Linkerd for Service Observability

    This post is part of a series on observability in Kubernetes clusters: Part 1 – Collecting Logs with Loki Part 2 – Collecting Metrics with Prometheus Part 3 – Dashboards with Grafana Part 4 – Using Linkerd for Service Observability (this post) Part 5 – Using Mimir for long-term metric storage As we start to…

  • Kubernetes Observability, Part 3 – Dashboards with Grafana

    This post is part of a series on observability in Kubernetes clusters: Part 1 – Collecting Logs with Loki Part 2 – Collecting Metrics with Prometheus Part 3 – Dashboards with Grafana (this post) Part 4 – Using Linkerd for Service Observability Part 5 – Using Mimir for long-term metric storage What good is Loki’s…

  • Kubernetes Observability, Part 2 – Collecting Metrics with Prometheus

    This post is part of a series on observability in Kubernetes clusters: Part 1 – Collecting Logs with Loki Part 2 – Collecting Metrics with Prometheus (this post)Part 3 – Building Grafana DashboardsPart 4 – Using Linkerd for Service ObservabilityPart 5 – Using Mimir for long-term metric storage “Prometheus” appears in many Kubernetes blogs the…

  • Kubernetes Observability, Part 1 – Collecting Logs with Loki

    This post is part of a series on observability in Kubernetes clusters: Part 1 – Collecting Logs with Loki (this post) Part 2 – Collecting Metrics with Prometheus Part 3 – Dashboards with Grafana Part 4 – Using Linkerd for Service Observability Part 5 – Using Mimir for long-term metric storage I have been spending…

  • An Impromptu Home Lab Disaster Recovery Session

    It has been a rough 90 days for my home lab. We have had a few unexpected power outages which took everything down. And, for the unexpected outages, things came back up. Over the weekend, I was doing some electrical work outside, wiring up outlets and lighting. Being safety conscious, I killed the power to…

  • Creating a simple Nginx-based web server image

    One of the hardest parts of blogging is identifying topics. I sometimes struggle with identifying things that I have done that would be interesting or helpful to others. In trying to establish a “rule of thumb” for such decisions, I think things that I have done at least twice qualify as potential topics. As it…

  • Nginx Reverse proxy: A slash makes all the difference.

    I have been doing some work to build up some standard processes for Kubernetes. ArgoCD has become a big part of that, as it allows us to declaratively manage the state of our clusters. After recovering from a small blow-up in the home lab (post coming), I wanted to migrate my cluster tools to utilize…

  • The cascading upgrade continues…

    I mentioned in a previous post that I made the jump to Windows 11 on both my work and home laptops. As it turns out, this is causing me to re-evaluate some of my other systems and upgrade them as needed. Old (really old) Firmware The HP ProLiant Gen8 Server I have been running for…

  • Breaking an RKE cluster in one easy step

    With the release of Ubuntu’s latest LTS release (22.04, or “Jammy Jellyfish), I wanted to upgrade my Kubernetes nodes from 20.04 to 22.04. What I had hoped would be an easy endeavor turned out to be a weeks-long process with destroyed clusters and, ultimately, an ETCD issue. The Hypothesis As I viewed it, I had…

  • Tech Tip – Azure DevOps Pipelines Newline handling

    Just a quick note: It would seem that somewhere between Friday, April 29, 2022 and Monday, May 2, 2022, Azure DevOps pipelines changed their handling of newlines in YAML literal blocks. The change caused our pipelines to stop executing with the following error: What caused it? Multi-line, inline block definitions.