Learn Kubernetes Weekly issue 197 · 19 Aug 2026
HPA Through Control Theory, End-to-End Observability, Inside Volcano Controllers, Forking Stateful Functions for Flink, Dagster on Kubernetes
This newsletter is brought to you by LearnKube — master Kubernetes with hands-on training designed for engineers who want to learn the smart way.
Articles
Kubernetes Through Control Theory Glasses: HPA
dev.to
This article reads the HPA as a proportional controller from control theory, showing why the deadband, high gain and slow response trade-offs are unavoidable, and what dead time and pod quantization do to a PID version of it.
Engineering End-to-End Observability for Kubernetes Workloads
hackernoon.com
This article explains why Kubernetes observability falls apart when metrics, logs and traces don't share context, and how consistent service identity, bounded label cardinality and OpenTelemetry pull them back together.
Inside Volcano Controllers: Gang Scheduling, State Machines, and Real Kubernetes Logs
medium.com
This article opens up Volcano's controllers to show how gang scheduling avoids the deadlock where half a distributed job holds resources, following the PodGroup and Job state machines with real cluster logs.
We forked Apache Stateful Functions for Flink 2.x — here's why
kzmlabs.hashnode.dev
This article explains why a team forked Apache Stateful Functions to keep it running on Flink 2.x and Java 21, what they changed in the connectors, build and release pipeline, and when you should use the fork.
Dagster on Kubernetes: When More Nodes Won’t Save You
medium.com
This article explains how to troubleshoot Dagster on Kubernetes when runs stay slow, covering concurrency limits, pod scheduling issues, retries, and PostgreSQL queue coordinator bottlenecks.
An 8-minute outage from a dead NLB and a JVM that cached DNS forever
dev.to
This case study shows how a JVM DNS cache pinned one service to dead AWS Network Load Balancer IPs during migration, causing an outage fixed with a 30-second TTL.
This four-day advanced kubernetes course teaches you:
- networking,
- autoscaling,
- security,
- and scheduling
through hands-on labs, led by engineers who run Kubernetes clusters in production every day.
Tutorials
Ephemeral Environments: Automating QA for Reliable Cloud-Native Systems
medium.com
This tutorial shows how to give every pull request its own ephemeral Kubernetes environment so tests run in a clean, isolated setup, using GitHub Actions and Argo CD ApplicationSets.
Tuning Argo CD When the Defaults Stop Working
gursimarsm.medium.com
This tutorial shows how to tune Argo CD when defaults stop working, using metrics to find scaling, memory, Redis, sharding, and monorepo problems.
Kubernetes KEDA Autoscaling: Scale Smarter, Not Harder
medium.com
This tutorial shows how KEDA scales workloads on queue depth instead of CPU, with a full RabbitMQ example: install, TriggerAuthentication, ScaledObject and a load test that proves the scaling works.
Kubernetes jobs
Platform Engineer with K2 Space
Salary: $165K to $200K a year
Location: based in the office in Los Angeles, CA, USA
Tech stack: Kubernetes, Kubernetes, Amazon EKS, EKS, AWS, alerting, metrics, logs, observability, tracing
Support Engineer with Innodata Inc.
Salary: CA$150K to CA$180K a year
Location: remote from
Tech stack: Kubernetes, Kubernetes, GKE, Google App Engine, Docker, GCP, Cloud Trace, Cloud Logging, alerting, monitoring
Support Engineer with Innodata Inc.
Salary: $100K to $130K a year
Location: remote from
Tech stack: Kubernetes, Cloud Run, Cloud Functions, Kubernetes, GKE, Google App Engine, Docker, GCP, Cloud Trace, Cloud Logging
DevOps Engineer with Nscale
Salary: $67.5K to $440K a year
Location: based in the office in Houston, TX, USA
Tech stack: Kubernetes, NVIDIA GPUs, InfiniBand, Kubernetes, High-Speed Ethernet, Docker, OpenTelemetry, Telemetry, monitoring, metrics
Platform Engineer with LatamCent
Salary: $84K to $120K a year
Location: remote from
Tech stack: Kubernetes, Kubernetes, AWS, GCP, NoSQL, AI infrastructure, human-in-the-loop workflows, LLM tools, AI Labs, AI
Discover more Kubernetes jobs on Kube Careers →
Code & tools
github.com/lenaxia
k8s-mechanic watches for pod crashes, degraded Deployments, and NotReady nodes, spawns a read-only in-cluster agent that investigates the failure and opens a PR on your GitOps repo with secret redaction, prompt injection detection, and a pentest report.
KSolver: Kubernetes cost optimizer
github.com/syslenslabs
KSolver is a Kubernetes cost optimizer that uses CP-SAT constraint programming to find cheaper node fleets, explain blockers, simulate changes, and rank safe savings actions.
cookiecluster: EKS Terraform CLI
github.com/clowdhaus
cookiecluster is a CLI tool written in Rust that generates EKS cluster definitions in Terraform through an interactive configuration process.
Agent Substrate: Kubernetes runtime for stateful agents
github.com/agent-substrate
Agent Substrate is a Kubernetes runtime for stateful agents that packs many mostly idle agents onto a few worker pods while keeping each agent's memory, filesystem state and routing intact.
Dynamo ModelExpress: model weight management for LLM inference
github.com/ai-dynamo
ModelExpress is an NVIDIA service that manages model weights across a cluster, caching them and moving them GPU-to-GPU over RDMA instead of reloading from storage, so new vLLM or Dynamo pods start serving much sooner.
Other interesting projects:
Upcoming Kubernetes events
Aug
22
In-person conference organized by Sketch.
Location: St. Louis, MO, USA
This event requires an entrance fee
Aug
22
In-person conference organized by Devopsdays.
Location: Curitiba, BR
This event requires an entrance fee
Aug
25
Building a Kubernetes-Native Control Plane for Hybrid Infrastructure at Julius Bär
In-person meetup organized by Cloud Platforms Switzerland.
Location: Zürich, CH
This is a free event.
Aug
26
In-person conference organized by techcamp.
Location: Hamburg, DE
This event requires an entrance fee
Aug
26
In-person conference organized by Devopsdays.
Location: Lima, PE
This event requires an entrance fee
Sept
10
Online workshop organized by LearnKube.
This is a virtual event
This event requires an entrance fee
Kubernetes call for papers
19
days
Kubernetes Community Days Florida 2026 Miami
The Call For Paper is open until 7 September 2026 at UTC. More info →
Location: Miami, FL, USA
In-person conference organized by KCD Florida.
The conference starts on the 11 December 2026.
- Apply here
54
days
KubeCon + CloudNativeCon Europe 2027
The Call For Paper is open until 12 October 2026 at UTC. More info →
Location: Barcelona, ES
In-person conference organized by CNCF.
The conference starts on the 18 March 2027.
- Apply here
12
days
The Call For Paper is open until 31 August 2026 at UTC. More info →
Location: Bucharest, RO
In-person conference organized by OmniOpenCon.
The conference starts on the 18 October 2026.
- Apply here
9
days
The Call For Paper is open until 28 August 2026 at UTC. More info →
This is a virtual event
Online conference organized by ScyllaDB.
The conference starts on the 11 March 2027.
- Apply here
42
days
The Call For Paper is open until 30 September 2026 at UTC. More info →
Location: Bengaluru, IN
In-person conference organized by Canonical.
The conference starts on the 15 November 2026.
- Apply here
5
days
The Call For Paper is open until 24 August 2026 at UTC. More info →
Location: Tokyo, JP
In-person conference organized by CNCF.
The conference starts on the 11 December 2026.
- Apply here
33
days
The Call For Paper is open until 21 September 2026 at UTC. More info →
Location: Montreal, CA
In-person conference organized by ConFoo.
The conference starts on the 26 February 2027.
- Apply here
30
days
The Call For Paper is open until 18 September 2026 at UTC. More info →
Location: Santa Clara, CA, USA
In-person conference organized by DevNetwork.
The conference starts on the 11 February 2027.
- Apply here
57
days
Global Summit on Data Science and Cloud Computing
The Call For Paper is open until 15 October 2026 at UTC. More info →
Location: Rome, IT
In-person conference organized by Noveltics Group.
The conference starts on the 20 October 2026.
- Apply here
Enjoy this one.
See you next week!
— Gulcan