Kube Builders
@kube.builders
News and links on building infrastructure and Kubernetes clusters curated by the @Learnk8s.io team
More K8s news, events, jobs → https://kube.today
More K8s news, events, jobs → https://kube.today
Reposted by Kube Builders
"In a monolith, your code base is your call graph. In microservices, service-to-service communication is your call graph."
Elamaran Shanmugam on why visualization is a must-have
📺: https://ku.bz/DCxhgWQqS
Elamaran Shanmugam on why visualization is a must-have
📺: https://ku.bz/DCxhgWQqS
September 22, 2026 at 7:56 PM
"In a monolith, your code base is your call graph. In microservices, service-to-service communication is your call graph."
Elamaran Shanmugam on why visualization is a must-have
📺: https://ku.bz/DCxhgWQqS
Elamaran Shanmugam on why visualization is a must-have
📺: https://ku.bz/DCxhgWQqS
Reposted by Kube Builders
🗣️ Jorrick Stempher breaks down the 5-component architecture for predictive Kubernetes scaling: Prometheus, NestJS adapter, PostgreSQL, Prophet ML model, and Grafana visualization
Watch: https://ku.bz/clbDWqPYp
Watch: https://ku.bz/clbDWqPYp
September 22, 2026 at 5:21 PM
🗣️ Jorrick Stempher breaks down the 5-component architecture for predictive Kubernetes scaling: Prometheus, NestJS adapter, PostgreSQL, Prophet ML model, and Grafana visualization
Watch: https://ku.bz/clbDWqPYp
Watch: https://ku.bz/clbDWqPYp
This article explains how running ZooKeeper on Google Cloud Z4D nodes with local SSDs removes the disk latency that slows consensus writes, plus the GKE anti-affinity, volume binding and JVM tuning it needs
➜ https://ku.bz/7WK7w0zK6
➜ https://ku.bz/7WK7w0zK6
September 22, 2026 at 3:51 PM
This article explains how running ZooKeeper on Google Cloud Z4D nodes with local SSDs removes the disk latency that slows consensus writes, plus the GKE anti-affinity, volume binding and JVM tuning it needs
➜ https://ku.bz/7WK7w0zK6
➜ https://ku.bz/7WK7w0zK6
This case study covers migrating a live k3s cluster from a flat network to a VLAN architecture, including an etcd quorum loss caused by moving too many nodes at once and the recovery steps using k3s server `--cluster-reset`
➤ https://ku.bz/Yxmxk1dbc
➤ https://ku.bz/Yxmxk1dbc
September 21, 2026 at 3:46 PM
This case study covers migrating a live k3s cluster from a flat network to a VLAN architecture, including an etcd quorum loss caused by moving too many nodes at once and the recovery steps using k3s server `--cluster-reset`
➤ https://ku.bz/Yxmxk1dbc
➤ https://ku.bz/Yxmxk1dbc
Harvester turns bare-metal servers into a hyperconverged platform combining VMs and containers using Kubernetes, KubeVirt, Longhorn, and Rancher
It supports live migration and distributed storage and is built for core-to-edge ops
➜ https://ku.bz/0-LL0mwyj
It supports live migration and distributed storage and is built for core-to-edge ops
➜ https://ku.bz/0-LL0mwyj
September 21, 2026 at 3:31 PM
Harvester turns bare-metal servers into a hyperconverged platform combining VMs and containers using Kubernetes, KubeVirt, Longhorn, and Rancher
It supports live migration and distributed storage and is built for core-to-edge ops
➜ https://ku.bz/0-LL0mwyj
It supports live migration and distributed storage and is built for core-to-edge ops
➜ https://ku.bz/0-LL0mwyj
Reposted by Kube Builders
New free book: Kubernetes Architecture in Financial Services
Platform lessons from seven banks on tenancy, delivery, policy, reliability, and cluster replacement
Supported by Buoyant, Sysdig, and Nirmata:
https://learnkube.com/kubernetes-architecture-financial-services
Platform lessons from seven banks on tenancy, delivery, policy, reliability, and cluster replacement
Supported by Buoyant, Sysdig, and Nirmata:
https://learnkube.com/kubernetes-architecture-financial-services
September 21, 2026 at 1:16 PM
New free book: Kubernetes Architecture in Financial Services
Platform lessons from seven banks on tenancy, delivery, policy, reliability, and cluster replacement
Supported by Buoyant, Sysdig, and Nirmata:
https://learnkube.com/kubernetes-architecture-financial-services
Platform lessons from seven banks on tenancy, delivery, policy, reliability, and cluster replacement
Supported by Buoyant, Sysdig, and Nirmata:
https://learnkube.com/kubernetes-architecture-financial-services
Goldpinger is a monitoring tool that runs as a DaemonSet and makes inter-pod calls to test connectivity
➤ https://ku.bz/D_P9JG76K
➤ https://ku.bz/D_P9JG76K
September 20, 2026 at 2:46 PM
Goldpinger is a monitoring tool that runs as a DaemonSet and makes inter-pod calls to test connectivity
➤ https://ku.bz/D_P9JG76K
➤ https://ku.bz/D_P9JG76K
Reposted by Kube Builders
Pumba lets you kill, pause, and stress containers while injecting network delays, packet loss, and corruption
You can deploy it as a DaemonSet for cluster-wide chaos engineering
➤ https://ku.bz/qcvwrrzn0
You can deploy it as a DaemonSet for cluster-wide chaos engineering
➤ https://ku.bz/qcvwrrzn0
September 19, 2026 at 5:16 PM
Pumba lets you kill, pause, and stress containers while injecting network delays, packet loss, and corruption
You can deploy it as a DaemonSet for cluster-wide chaos engineering
➤ https://ku.bz/qcvwrrzn0
You can deploy it as a DaemonSet for cluster-wide chaos engineering
➤ https://ku.bz/qcvwrrzn0
This tutorial shows how to replace always-on EC2 runners with autoscaling GitLab runners using the AWS fleeting plugin and an Auto Scaling Group, so instances start per job and shut down when the queue is empty
➤ https://ku.bz/nD6qbNZ3w
➤ https://ku.bz/nD6qbNZ3w
September 19, 2026 at 2:41 PM
This tutorial shows how to replace always-on EC2 runners with autoscaling GitLab runners using the AWS fleeting plugin and an Auto Scaling Group, so instances start per job and shut down when the queue is empty
➤ https://ku.bz/nD6qbNZ3w
➤ https://ku.bz/nD6qbNZ3w
Reposted by Kube Builders
This article explains how Go Fiber reached 1.16M RPS on Apple Silicon by running client and server benchmarks inside Docker Desktop's Linux VM to bypass macOS loopback TCP limits
➤ https://ku.bz/4_mmH26nZ
➤ https://ku.bz/4_mmH26nZ
September 18, 2026 at 5:46 PM
This article explains how Go Fiber reached 1.16M RPS on Apple Silicon by running client and server benchmarks inside Docker Desktop's Linux VM to bypass macOS loopback TCP limits
➤ https://ku.bz/4_mmH26nZ
➤ https://ku.bz/4_mmH26nZ
Reposted by Kube Builders
Kor is a CLI tool that scans your cluster and lists the unused resources nobody cleaned up, from forgotten ConfigMaps and Secrets to stale Services and PVCs
➜ https://ku.bz/YzcpnL3gj
➜ https://ku.bz/YzcpnL3gj
September 18, 2026 at 5:31 PM
Kor is a CLI tool that scans your cluster and lists the unused resources nobody cleaned up, from forgotten ConfigMaps and Secrets to stale Services and PVCs
➜ https://ku.bz/YzcpnL3gj
➜ https://ku.bz/YzcpnL3gj
MetalLB is a tool that provides a load-balancer implementation for bare metal Kubernetes clusters using standard routing protocols
➤ https://ku.bz/gP-LGPnJc
➤ https://ku.bz/gP-LGPnJc
September 18, 2026 at 3:46 PM
MetalLB is a tool that provides a load-balancer implementation for bare metal Kubernetes clusters using standard routing protocols
➤ https://ku.bz/gP-LGPnJc
➤ https://ku.bz/gP-LGPnJc
This tutorial shows how to run Azure DevOps agents on AKS so that KEDA spins up a fresh agent pod whenever the pipeline queue grows and removes it when the job is done
➜ https://ku.bz/y7Kjp1WvS
➜ https://ku.bz/y7Kjp1WvS
September 18, 2026 at 3:31 PM
This tutorial shows how to run Azure DevOps agents on AKS so that KEDA spins up a fresh agent pod whenever the pipeline queue grows and removes it when the job is done
➜ https://ku.bz/y7Kjp1WvS
➜ https://ku.bz/y7Kjp1WvS
Reposted by Kube Builders
"I cached the biggest image in the AMI and it didn't help -- EBS lazy loading means the data isn't actually there when you need it."
Jan Ludvik on why image caching on EBS isn't straightforward
📺: https://ku.bz/B7TzKXyxf
Jan Ludvik on why image caching on EBS isn't straightforward
📺: https://ku.bz/B7TzKXyxf
September 18, 2026 at 3:08 PM
"I cached the biggest image in the AMI and it didn't help -- EBS lazy loading means the data isn't actually there when you need it."
Jan Ludvik on why image caching on EBS isn't straightforward
📺: https://ku.bz/B7TzKXyxf
Jan Ludvik on why image caching on EBS isn't straightforward
📺: https://ku.bz/B7TzKXyxf
Kubesafe is a tool that prevents accidental execution of dangerous commands on the wrong Kubernetes cluster by providing a safety net for cluster management
➜ https://ku.bz/3hC23K79L
➜ https://ku.bz/3hC23K79L
September 17, 2026 at 4:11 PM
Kubesafe is a tool that prevents accidental execution of dangerous commands on the wrong Kubernetes cluster by providing a safety net for cluster management
➜ https://ku.bz/3hC23K79L
➜ https://ku.bz/3hC23K79L
booter is a small container that PXE-boots Talos machines on the same subnet, and can pass Omni kernel arguments so new nodes register with your cluster automatically
➤ https://ku.bz/vVGjgXvmj
➤ https://ku.bz/vVGjgXvmj
September 17, 2026 at 3:41 PM
booter is a small container that PXE-boots Talos machines on the same subnet, and can pass Omni kernel arguments so new nodes register with your cluster automatically
➤ https://ku.bz/vVGjgXvmj
➤ https://ku.bz/vVGjgXvmj
KubeShark is a Kubernetes skill for Claude Code and Codex that feeds the agent official best practices, so generated manifests stop using deprecated APIs, wildcard RBAC or missing resource limits
➜ https://ku.bz/m6GhSVL9W
➜ https://ku.bz/m6GhSVL9W
September 16, 2026 at 3:31 PM
KubeShark is a Kubernetes skill for Claude Code and Codex that feeds the agent official best practices, so generated manifests stop using deprecated APIs, wildcard RBAC or missing resource limits
➜ https://ku.bz/m6GhSVL9W
➜ https://ku.bz/m6GhSVL9W
Reposted by Kube Builders
🗣️ Ben Poland, Senior Staff Platform Engineer @ Faire, breaks down the fundamental architectural differences between Jenkins and Buildkite when running CI workloads on Kubernetes
Watch the full episode: https://ku.bz/klBmzMY5-
Watch the full episode: https://ku.bz/klBmzMY5-
September 16, 2026 at 3:06 PM
🗣️ Ben Poland, Senior Staff Platform Engineer @ Faire, breaks down the fundamental architectural differences between Jenkins and Buildkite when running CI workloads on Kubernetes
Watch the full episode: https://ku.bz/klBmzMY5-
Watch the full episode: https://ku.bz/klBmzMY5-
Reposted by Kube Builders
Kubernetes race conditions, rendered GitOps manifests, Headlamp migration, pod-level resources, and hidden cluster capacity
Brought to you by LearnKube: https://ku.bz/hypSbyc-V
Learn Kubernetes Weekly 201: https://kube.today/issues/201
Brought to you by LearnKube: https://ku.bz/hypSbyc-V
Learn Kubernetes Weekly 201: https://kube.today/issues/201
September 16, 2026 at 11:46 AM
Kubernetes race conditions, rendered GitOps manifests, Headlamp migration, pod-level resources, and hidden cluster capacity
Brought to you by LearnKube: https://ku.bz/hypSbyc-V
Learn Kubernetes Weekly 201: https://kube.today/issues/201
Brought to you by LearnKube: https://ku.bz/hypSbyc-V
Learn Kubernetes Weekly 201: https://kube.today/issues/201
This article tells how a GPU passthrough on a k3s worker VM put a whole Proxmox host into a boot loop, and how masking the guest-start service at the GRUB prompt rescued it
➜ https://ku.bz/79pRFd6Zm
➜ https://ku.bz/79pRFd6Zm
September 15, 2026 at 5:56 PM
This article tells how a GPU passthrough on a k3s worker VM put a whole Proxmox host into a boot loop, and how masking the guest-start service at the GRUB prompt rescued it
➜ https://ku.bz/79pRFd6Zm
➜ https://ku.bz/79pRFd6Zm
Reposted by Kube Builders
“When you run one pizza order, you get 200 traces.”
On Kube Signals episode two, Mauricio (Salaboy) Salatino shows @brianteller.bsky.social why the demo needed 15 containers
Watch: https://ku.bz/TlVjXdnb6
Presented by Learn Kubernetes Weekly
On Kube Signals episode two, Mauricio (Salaboy) Salatino shows @brianteller.bsky.social why the demo needed 15 containers
Watch: https://ku.bz/TlVjXdnb6
Presented by Learn Kubernetes Weekly
September 15, 2026 at 2:11 PM
“When you run one pizza order, you get 200 traces.”
On Kube Signals episode two, Mauricio (Salaboy) Salatino shows @brianteller.bsky.social why the demo needed 15 containers
Watch: https://ku.bz/TlVjXdnb6
Presented by Learn Kubernetes Weekly
On Kube Signals episode two, Mauricio (Salaboy) Salatino shows @brianteller.bsky.social why the demo needed 15 containers
Watch: https://ku.bz/TlVjXdnb6
Presented by Learn Kubernetes Weekly
Reposted by Kube Builders
This article lays out a production EKS setup where Karpenter keeps a cheap On-Demand baseline and absorbs traffic spikes with Spot nodes that drain safely when AWS reclaims them
➜ https://ku.bz/f-CnXzXxb
➜ https://ku.bz/f-CnXzXxb
September 14, 2026 at 4:51 PM
This article lays out a production EKS setup where Karpenter keeps a cheap On-Demand baseline and absorbs traffic spikes with Spot nodes that drain safely when AWS reclaims them
➜ https://ku.bz/f-CnXzXxb
➜ https://ku.bz/f-CnXzXxb
Reposted by Kube Builders
When does Kubernetes make sense?
It is one of the questions we ask during private Kubernetes courses at @learnkube.com.
My controversial answer is one application.
It is one of the questions we ask during private Kubernetes courses at @learnkube.com.
My controversial answer is one application.
September 14, 2026 at 4:11 PM
When does Kubernetes make sense?
It is one of the questions we ask during private Kubernetes courses at @learnkube.com.
My controversial answer is one application.
It is one of the questions we ask during private Kubernetes courses at @learnkube.com.
My controversial answer is one application.
tfplanctx turns a Terraform plan into a short, grep-friendly summary so coding agents can review what will change without burning context on raw plan output
➜ https://ku.bz/jm97DG4yh
➜ https://ku.bz/jm97DG4yh
September 14, 2026 at 3:46 PM
tfplanctx turns a Terraform plan into a short, grep-friendly summary so coding agents can review what will change without burning context on raw plan output
➜ https://ku.bz/jm97DG4yh
➜ https://ku.bz/jm97DG4yh
This article opens up Xatastor, the storage system Xata built for millions of Postgres databases, explaining why they chose ZFS zvols over NVMe-oF instead of Ceph or Longhorn, and how their Kubernetes operator drives it
➤ https://ku.bz/LcBp9Pl1h
➤ https://ku.bz/LcBp9Pl1h
September 14, 2026 at 3:21 PM
This article opens up Xatastor, the storage system Xata built for millions of Postgres databases, explaining why they chose ZFS zvols over NVMe-oF instead of Ceph or Longhorn, and how their Kubernetes operator drives it
➤ https://ku.bz/LcBp9Pl1h
➤ https://ku.bz/LcBp9Pl1h