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The Obmondo Blog

Ops & Open Source.

Field notes from the team running Linux and Kubernetes infrastructure for a living. Deep dives, lessons learned, and open-source we ship along the way.

Cilium Network Policy Anti-Patterns We Learned the Hard WayCilium Network Policy Anti-Patterns We Learned the Hard Way
Featured
kubernetesciliumnetwork-policy
Shubham Singh Mahar·12 Aug 2026·16 min read
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All articles

22 posts

Why 'Hosted in the EU' Doesn't Mean GDPR CompliantWhy 'Hosted in the EU' Doesn't Mean GDPR Compliant
GDPRData SovereigntyCloud Strategy
Mohammad Warid·08 Aug 2026·7 min
Open Source AI: Are You Calling a Cab, Leasing a Car, or Building One in Your Garage?Open Source AI: Are You Calling a Cab, Leasing a Car, or Building One in Your Garage?
aiopensourcearchitecture
Mohammad Warid·31 Jul 2026·5 min
etcd Disk Latency: The Silent Killer of Control-Plane Stabilityetcd Disk Latency: The Silent Killer of Control-Plane Stability
kubernetesetcd
Mohammad Warid·28 Jul 2026·3 min
Kubernetes assumes an infinite datacenterKubernetes assumes an infinite datacenter
kubernetescluster apibare metal
Shivam Kumar·28 Jul 2026·13 min
We ran the same cluster on AWS, Azure and Hetzner. The bill wasn't the surprise.We ran the same cluster on AWS, Azure and Hetzner. The bill wasn't the surprise.
kubernetescloud costaws
Shivam Kumar·28 Jul 2026·15 min
The Day to Stop Caring About Cloud Vendor Lock-inThe Day to Stop Caring About Cloud Vendor Lock-in
Team Obmondo·17 Jul 2026·4 min
The Dark Side of IT Operational Services - How Cloud Vendors Trap You, and What It Actually Costs to EscapeThe Dark Side of IT Operational Services - How Cloud Vendors Trap You, and What It Actually Costs to Escape
Mohammad Warid·08 Jul 2026·12 min
The Hardest Problem in IT Isn't the Software, It's Everything After - The Fallacies We BelieveThe Hardest Problem in IT Isn't the Software, It's Everything After - The Fallacies We Believe
Mohammad Warid·07 Jul 2026·9 min
The EU Cyber Resilience Act Explained Without the Legal JargonThe EU Cyber Resilience Act Explained Without the Legal Jargon
Mohammad Warid·30 Jun 2026·5 min
Professional Kubernetes on a Budget - How to Run Production-Grade Clusters at a Fraction of the CostProfessional Kubernetes on a Budget - How to Run Production-Grade Clusters at a Fraction of the Cost
kubernetescostbare-metal
Mohammad Warid·28 Jun 2026·20 min
ArgoCD Deadlock — How an "example.yaml" Broke GitOps!ArgoCD Deadlock — How an "example.yaml" Broke GitOps!
argocdgitopshelm
Mohammad Warid·24 Jun 2026·5 min
ServiceMonitor "namespaceSelector.any: true" — How a Permissive Setting Broke PrometheusServiceMonitor "namespaceSelector.any: true" — How a Permissive Setting Broke Prometheus
kubernetesprometheusrbac
Mohammad Warid·24 Jun 2026·5 min
When the Floating IP Stays Stuck, A Bare-Metal HA Control-Plane FailureWhen the Floating IP Stays Stuck, A Bare-Metal HA Control-Plane Failure
kubernetesbare-metalhigh-availability
Mohammad Warid·23 Jun 2026·5 min
Don't Use "increase()" on Gauges — A False Alert StoryDon't Use "increase()" on Gauges — A False Alert Story
prometheuspromqlalerting
Mohammad Warid·23 Jun 2026·4 min
Recovering Prometheus TSDB from "chunks_head" CorruptionRecovering Prometheus TSDB from "chunks_head" Corruption
prometheustsdbkubernetes
Mohammad Warid·23 Jun 2026·5 min
CloudNativePG WAL Archives — When an S3 Bucket Kills Your BackupsCloudNativePG WAL Archives — When an S3 Bucket Kills Your Backups
postgresqlcloudnativepgbackup
Mohammad Warid·23 Jun 2026·5 min
Kubernetes 1.36: Why 'Maturing' is Better Than 'Flashy'Kubernetes 1.36: Why 'Maturing' is Better Than 'Flashy'
Team Obmondo·04 Jun 2026·5 min
The Sovereignty Spectrum: Why "My Data Is in Frankfurt" Isn't Enough AnymoreThe Sovereignty Spectrum: Why "My Data Is in Frankfurt" Isn't Enough Anymore
Digital SovereigntyData OwnershipCloud Strategy
Sankhadeep Sur·01 May 2026·13 min
Obmondo - Making Enterprise IT More Economically AccessibleObmondo - Making Enterprise IT More Economically Accessible
Team Obmondo·25 Feb 2026·4 min
Setting Up a Local LLM at Obmondo - From Zero to Qwen2.5-CoderSetting Up a Local LLM at Obmondo - From Zero to Qwen2.5-Coder
llmaiselfhosted
Ashish Jaiswal·24 Feb 2026·14 min
Bootstrapping and upgrading a self-managing K8s cluster in AWS, effortlessly, using ClusterAPI and KubeAidBootstrapping and upgrading a self-managing K8s cluster in AWS, effortlessly, using ClusterAPI and KubeAid
kubernetesclusteraws
Archisman Mridha·09 Dec 2024·4 min