Learn Kubernetes Weekly issue 131
Synchronizing Database schema, Building Resilient Applications, EKS Auto Mode vs AKS Automatic, How does Calico assign IPs to itself?
14 May 2025
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Articles
Synchronizing Database schema updates between projects and environments
DV Engineering
DoubleVerify uses a shared DB schema repo + Helm pre-install hooks to sync updates across multi-project environments, avoiding monorepo due to CI/CD/security constraints.
Reducing Prometheus Alert Fatigue: An AI Intervention for Infrastructure and Application Monitoring
Kubernetes alerting is painful: since it is "self healing", there is a continuous stream of noise from infrastructure that may be unhealthy now but will improve in a few seconds.
Learn how AI Agents can help.
sponsored
Building Resilient Applications on Kubernetes
Learn why Xe returned to Kubernetes and opted for Civo's managed k3s cluster over Vultr due to cost-effective unlimited egress and reliability.
Amazon EKS Auto Mode vs Azure AKS Automatic: Which is the Better Managed Kubernetes Solution?
Pixel Robots.
This article compares AWS EKS Auto Mode and Azure AKS Automatic regarding automation, scaling, observability, and security.
- AKS Automatic offers end-to-end networking and workload scaling automation.
- EKS Auto Mode focuses on node provisioning.
A CNI 'chicken-and-egg' dilemma: How does Calico assign IPs to itself?
xiaoqing
Calico bootstraps itself on NotReady nodes by scheduling calico-node as a hostNetwork Pod, which installs CNI binaries via initContainers.
This allows kubelet to become network-ready and calico-ipam to allocate IPs before other Calico components start.
API Streaming in Kubernetes: Memory-Efficient List Responses
Kubernetes 1.32 adds API streaming for list requests, sending objects one by one from the watch cache instead of buffering complete responses in memory.
This prevents kube-apiserver memory spikes and Out Of Memory (OOM).
Articles worth checking out:
Build agents for your team with thousands(!) of tools imported and configured for your environment in minutes.
Build agents that respond to alerts and build tickets or provide self-service in your help channels.
Tutorials
How etcd works with and without Kubernetes
Emanuel Evans
Learn how Kubernetes uses etcd as a strongly consistent key-value store via Raft, where every API write becomes a key under
/registry, controllers watch key prefixes, and MVCC with revisions ensures atomic, ordered state across the cluster.Understanding the 1MB Limit of Etcd in Kubernetes: Challenges with Helm Deployments
Logeshbalu
This article details how etcd’s 1MB per-object limit causes Helm deployments to fail when release metadata stored as Secrets exceeds the cap.
It offers strategies like chart modularization and history pruning to mitigate these issues.
Distroless Images in Docker: Minimalism, Security, and Debugging in Kubernetes
Sergei Ozeranskii
This article details how Distroless images reduce attack surface by removing shells and package managers.
It compares image sizes, shows how to build with multistage Dockerfiles, and validates security via Grype—finding 53 vs 107 CVEs in slim images.
Building a Resilient EKS Cluster with In-cluster Auto-Scaled Lib hardware
LoxiLB
Learn how LoxiLB transforms EKS cluster networking by providing in-cluster, auto-scaled load balancing that cuts costs, enhances performance, and enables flexible multi-network deployments across AWS regions.
Kubernetes jobs
Platform Engineer with SimSpace
Salary: $150K to $210K a year
Location: remote from the United States
Tech stack: Kubernetes, Go, Python, Java, Kotlin
DevOps Engineer with NMI
Salary: $155K to $165K a year
Location: remote from the United States
Tech stack: Kubernetes, On-premise, Go, Shell, Python, MySQL, Gitlab, Ansible, Puppet, Grafana
Software Engineer with GEICO
Salary: $115K to $230K a year
Location: remote from the United States
Tech stack: Kubernetes, AWS, Azure, GCP, Docker, Python, SQL, Java, C++, C#
DevOps Engineer with Huntington Bank
Salary: $57K to $113K a year
Location: based in the office (and remote from home) in Columbus, OH, USA
Tech stack: Kubernetes, AWS, Docker, Python, SQL, Javascript, Typescript, DynamoDB, PostgreSQL, MySQL
Software Engineer with Natera
Salary: $99.3K to $124.1K a year
Location: remote from the United States
Tech stack: Kubernetes, AWS, Docker, Shell, Python, SQL, Java, Groovy, Kafka, Gitlab
Discover more Kubernetes jobs on Kube Careers →
Code & tools
Helmfile is a declarative spec for deploying Helm charts. It lets you:
- Keep a directory of chart value files and maintain changes in version control.
- Apply CI/CD to configuration changes.
- Periodically sync to avoid skew in environments.
The RunWhen Open Source Authors program is for engineers interested in royalties and bounties in return for contributing AI-ready SRE automation.
sponsored
Helm-mapkubeapis: Fix Deprecated APIs in Helm Releases
mapkubeapis is a Helm v3 plugin which updates in-place Helm release metadata that contains deprecated or removed Kubernetes APIs to a new instance with supported Kubernetes APIs.
helmfile
Vals is a Helm-compatible tool that injects secrets and config values from backends like Vault, AWS SSM, GCP Secrets Manager, and Kubernetes.
It resolves
ref+URIs in YAML, supportinghelmfile,direnv, and kubectl workflows.KGrok – Self-Service HTTPS Tunnels for Local Devs via Kubernetes
IxDay
KGrok is a Kubernetes-native CLI tool that enables developers to expose their local machines via secure HTTPS endpoints using the Gateway API and wildcard DNS.
Other interesting projects:
Upcoming Kubernetes events
May
15
Kubernetes Community Days Texas Austin 2025
In-person conference organized by KCD Texas.
Location: Austin, TX, USA
This event requires an entrance fee
May
16
Building AI Workflows with DigitalOcean Kubernetes & Dissecting the Kubernetes Scheduler
In-person meetup organized by DigitalOcean New York.
Location: New York, NY, USA
This is a free event.
May
20
Online & in-person conference organized by Data Miner.
Location: Vilnius, LT and virtual
This event requires an entrance fee
Use LEARNK8S10 to get 10% off
May
22
Kubernetes Community Days Seoul 2025
In-person conference organized by KCD South Korea.
Location: Seoul, KR
This event requires an entrance fee
Jun
26
Online workshop organized by Learnk8s.
This is a virtual event
This event requires an entrance fee
Discover more Kubernetes events on Kube Events →
Kubernetes Call for Papers
9
days
Kubernetes Community Washington DC 2025
The Call For Paper is open until 26 May 2025 at UTC. More info →
Location: Washington, D.C., USA
In-person conference organized by KCD Washington DC.
The conference starts on the 16 September 2025.
- Apply here
14
days
The Call For Paper is open until 31 May 2025 at UTC. More info →
Location: Vienna, AT
In-person conference organized by CNDA Austria.
The conference starts on the 8 October 2025.
- Apply here
11
days
KubeCon + CloudNativeCon North America 2025
The Call For Paper is open until 28 May 2025 at UTC. More info →
Location: Atlanta, GE, USA
In-person conference organized by Linux Foundation.
The conference starts on the 10 November 2025.
- Apply here
30
days
The Call For Paper is open until 16 June 2025 at UTC. More info →
Location: Aarhus, DK
In-person conference organized by CND.
The conference starts on the 17 April 2025.
- Apply here
44
days
Kubernetes Community Days Porto 2025
The Call For Paper is open until 30 June 2025 at UTC. More info →
Location: Porto, PT
In-person conference organized by KCD Porto.
The conference starts on the 4 November 2025.
- Apply here
30
days
Kubernetes Community Days Warsaw 2025
The Call For Paper is open until 16 June 2025 at UTC. More info →
Location: Warsaw, PL
In-person conference organized by KCD Warsaw.
The conference starts on the 9 October 2025.
- Apply here
78
days
The Call For Paper is open until 3 August 2025 at UTC. More info →
Location: Austin, TX, USA
In-person conference organized by TXLF.
The conference starts on the 4 October 2025.
- Apply here
30
days
The Call For Paper is open until 15 June 2025 at UTC. More info →
Location: Tel Aviv, IL
In-person conference organized by Devopsdays.
The conference starts on the 11 December 2025.
- Apply here
79
days
The Call For Paper is open until 4 August 2025 at UTC. More info →
Location: Tokyo, JP
In-person conference organized by Linux Foundation.
The conference starts on the 10 December 2025.
- Apply here
Until next time!
— Dan
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