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softverseAdmin

DevOps engineer turned project manager in Tokyo. I write practical, honest guides on Kubernetes, GitOps, CI/CD, AWS cost and DevSecOps at DevOps Enginer — real experience, no fluff. New posts weekly.

Location Tokyo, Japan Joined Joined on  Personal website https://www.devopsenginer.com github website
Backup Verification in 2026: Exit Code 0 Is Not a Backup

Backup Verification in 2026: Exit Code 0 Is Not a Backup

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9 min read

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Prometheus in 2026: Metrics, PromQL and Alerting That Pages Only When It Matters

Prometheus in 2026: Metrics, PromQL and Alerting That Pages Only When It Matters

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7 min read
Kubernetes Jobs and CronJobs in 2026: Batch Work That Finishes (or Fails) Cleanly

Kubernetes Jobs and CronJobs in 2026: Batch Work That Finishes (or Fails) Cleanly

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8 min read
Kubernetes RBAC in 2026: Roles, Bindings and Least Privilege That Actually Holds

Kubernetes RBAC in 2026: Roles, Bindings and Least Privilege That Actually Holds

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8 min read
Terraform Testing in 2026: Unit Tests With terraform test and Mock Providers

Terraform Testing in 2026: Unit Tests With terraform test and Mock Providers

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7 min read
Kubernetes Logging in 2026: From kubectl logs to a Pipeline That Scales

Kubernetes Logging in 2026: From kubectl logs to a Pipeline That Scales

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9 min read
GitHub Actions to AWS Without Stored Keys: OIDC Federation in 2026

GitHub Actions to AWS Without Stored Keys: OIDC Federation in 2026

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7 min read
Kubernetes Pod Disruption Budgets in 2026: Graceful Shutdown Without Dropped Requests

Kubernetes Pod Disruption Budgets in 2026: Graceful Shutdown Without Dropped Requests

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8 min read
Kubernetes Backup and Disaster Recovery in 2026: Backups You Have Actually Restored

Kubernetes Backup and Disaster Recovery in 2026: Backups You Have Actually Restored

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8 min read
Kubernetes Network Policies in 2026: Lock Down Pod Traffic Without Breaking Your App

Kubernetes Network Policies in 2026: Lock Down Pod Traffic Without Breaking Your App

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7 min read
Amazon EKS in 2026: Managed Kubernetes on AWS, Explained for Working Engineers

Amazon EKS in 2026: Managed Kubernetes on AWS, Explained for Working Engineers

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8 min read
AWS VPC in 2026: The DevOps Guide to Subnets, Routing and Not Locking Yourself Out

AWS VPC in 2026: The DevOps Guide to Subnets, Routing and Not Locking Yourself Out

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8 min read
Terraform Modules in 2026: Reusable Infrastructure Without the Copy-Paste

Terraform Modules in 2026: Reusable Infrastructure Without the Copy-Paste

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7 min read
Kubernetes ConfigMaps and Secrets in 2026: Configuration Without Rebuilding Images

Kubernetes ConfigMaps and Secrets in 2026: Configuration Without Rebuilding Images

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7 min read
Kubernetes Upgrades in 2026: Minor Versions Without the Downtime or the Drama

Kubernetes Upgrades in 2026: Minor Versions Without the Downtime or the Drama

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7 min read
Kubernetes Storage in 2026: PersistentVolumes, StorageClasses and StatefulSets Without the Fear

Kubernetes Storage in 2026: PersistentVolumes, StorageClasses and StatefulSets Without the Fear

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7 min read
Kubernetes Security Basics in 2026: RBAC, Network Policies and Pod Security That Actually Get Used

Kubernetes Security Basics in 2026: RBAC, Network Policies and Pod Security That Actually Get Used

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8 min read
Kubernetes Autoscaling in 2026: HPA, VPA, Cluster Autoscaling and KEDA — What Each One Actually Does

Kubernetes Autoscaling in 2026: HPA, VPA, Cluster Autoscaling and KEDA — What Each One Actually Does

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8 min read
Argo Rollouts 2026: Progressive Delivery for Kubernetes — Canary, Blue-Green and Rollbacks That Happen by Themselves

Argo Rollouts 2026: Progressive Delivery for Kubernetes — Canary, Blue-Green and Rollbacks That Happen by Themselves

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9 min read
Kubernetes Observability 2026: Metrics, Logs and Traces Without the Noise

Kubernetes Observability 2026: Metrics, Logs and Traces Without the Noise

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9 min read
Platform Engineering in Practice 2026: Golden Paths, Portals, and Proof Anyone Uses Them

Platform Engineering in Practice 2026: Golden Paths, Portals, and Proof Anyone Uses Them

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9 min read
CI/CD for Monorepos 2026: Build Only What Changed

CI/CD for Monorepos 2026: Build Only What Changed

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10 min read
Kubernetes Cost Optimization 2026: Stop Paying for Requests You Don't Use

Kubernetes Cost Optimization 2026: Stop Paying for Requests You Don't Use

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8 min read
Helm Charts Tutorial 2026: Package, Template and Ship Kubernetes Apps Without YAML Sprawl

Helm Charts Tutorial 2026: Package, Template and Ship Kubernetes Apps Without YAML Sprawl

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9 min read
Kubernetes Networking & Ingress Basics (2026): Pods, Services, DNS and Getting Traffic In

Kubernetes Networking & Ingress Basics (2026): Pods, Services, DNS and Getting Traffic In

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8 min read
AWS IAM Least Privilege in 2026: A Practical Guide for DevOps Engineers (Without Breaking Production)

AWS IAM Least Privilege in 2026: A Practical Guide for DevOps Engineers (Without Breaking Production)

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7 min read
GitHub Actions Reusable Workflows & Composite Actions (2026): Stop Copy-Pasting YAML Across Repos

GitHub Actions Reusable Workflows & Composite Actions (2026): Stop Copy-Pasting YAML Across Repos

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7 min read
Terraform State Management in 2026: Remote State, Locking, Workspaces and Not Losing Your Infrastructure

Terraform State Management in 2026: Remote State, Locking, Workspaces and Not Losing Your Infrastructure

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8 min read
Kubernetes Resource Requests and Limits (2026): Set Them Right and Prevent OOMKilled & FailedScheduling

Kubernetes Resource Requests and Limits (2026): Set Them Right and Prevent OOMKilled & FailedScheduling

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9 min read
Kubernetes Troubleshooting in 2026: CrashLoopBackOff, ImagePullBackOff, Pending Pods and 20+ Errors — Diagnosis Steps That Actually Work

Kubernetes Troubleshooting in 2026: CrashLoopBackOff, ImagePullBackOff, Pending Pods and 20+ Errors — Diagnosis Steps That Actually Work

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14 min read
Argo CD Tutorial 2026: GitOps Deployment Step by Step — Install, Sync, Rollback, and the Mistakes to Avoid

Argo CD Tutorial 2026: GitOps Deployment Step by Step — Install, Sync, Rollback, and the Mistakes to Avoid

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14 min read
kubectl Commands Cheat Sheet (2026): The Commands DevOps Engineers Actually Use

kubectl Commands Cheat Sheet (2026): The Commands DevOps Engineers Actually Use

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14 min read
Platform Engineering in 2026: IDPs, Golden Paths, and When Your Team Actually Needs One

Platform Engineering in 2026: IDPs, Golden Paths, and When Your Team Actually Needs One

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21 min read
Terraform vs Pulumi vs CloudFormation in 2026: Which IaC Tool Should You Choose?

Terraform vs Pulumi vs CloudFormation in 2026: Which IaC Tool Should You Choose?

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17 min read
Multi-Cloud Strategy in 2026: When It Helps, When It Hurts, and How to Run It Well

Multi-Cloud Strategy in 2026: When It Helps, When It Hurts, and How to Run It Well

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17 min read
How to Optimize Docker Images for Production in 2026: Smaller Images, Fewer CVEs, Faster Deploys

How to Optimize Docker Images for Production in 2026: Smaller Images, Fewer CVEs, Faster Deploys

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20 min read
Build a CI/CD Pipeline with GitHub Actions (2026): Complete Step-by-Step Guide

Build a CI/CD Pipeline with GitHub Actions (2026): Complete Step-by-Step Guide

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19 min read
GitHub Actions vs GitLab CI vs Jenkins in 2026: Which CI/CD Tool Fits Your Team?

GitHub Actions vs GitLab CI vs Jenkins in 2026: Which CI/CD Tool Fits Your Team?

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21 min read
AWS Cost Optimization in 2026: 15 Tactics That Cut Real Bills (With Checks, Commands, and Honest Impact Ranges)

AWS Cost Optimization in 2026: 15 Tactics That Cut Real Bills (With Checks, Commands, and Honest Impact Ranges)

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20 min read
Kubernetes Deployment Strategies in 2026: Rolling, Blue-Green, Canary, Recreate, A/B and Shadow

Kubernetes Deployment Strategies in 2026: Rolling, Blue-Green, Canary, Recreate, A/B and Shadow

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17 min read
DevSecOps Checklist 2026: Secure Your CI/CD Pipeline Without Slowing Delivery

DevSecOps Checklist 2026: Secure Your CI/CD Pipeline Without Slowing Delivery

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16 min read
Serverless vs Containers (2026): How to Choose for Cost, Scale and Speed

Serverless vs Containers (2026): How to Choose for Cost, Scale and Speed

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16 min read
Self-Healing Infrastructure in Kubernetes (2026): Probes, Autoscaling, GitOps & Auto-Remediation Explained

Self-Healing Infrastructure in Kubernetes (2026): Probes, Autoscaling, GitOps & Auto-Remediation Explained

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16 min read
GitOps vs Traditional CI/CD in 2026: Differences, Examples, and Which One to Choose

GitOps vs Traditional CI/CD in 2026: Differences, Examples, and Which One to Choose

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16 min read
How to Become a DevOps Engineer in Japan in 2026: Routes, Japanese, Skills & Hiring

How to Become a DevOps Engineer in Japan in 2026: Routes, Japanese, Skills & Hiring

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19 min read
Top 10 DevOps Tools in 2026: The Stack I Actually Use, and What to Skip

Top 10 DevOps Tools in 2026: The Stack I Actually Use, and What to Skip

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20 min read
AI for DevOps in 2026: Practical Use Cases, Tools & a Hands-On Example

AI for DevOps in 2026: Practical Use Cases, Tools & a Hands-On Example

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18 min read
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