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Oleksandr Kuryzhev

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Location Ukraine Joined Joined on  Personal website https://kuryzhev.cloud

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DevOps engineer

Kubernetes NetworkPolicy Checklist: Locking Down Namespace Isolation
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Kubernetes NetworkPolicy Checklist: Locking Down Namespace Isolation

#kubernetes #devops
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8 min read

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S3 Lifecycle Policy Mistakes That Quietly Inflate Your AWS Bill
oleksandr_kuryzhev_42873f profile

S3 Lifecycle Policy Mistakes That Quietly Inflate Your AWS Bill

#aws #devops
1
Comments
7 min read
Ansible Zero-Downtime Deployment: Draining the Load Balancer Right
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Ansible Zero-Downtime Deployment: Draining the Load Balancer Right

#devops
1
Comments
8 min read
Cloudflare Origin Hardening Checklist: Firewall, Bots, Strict SSL
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Cloudflare Origin Hardening Checklist: Firewall, Bots, Strict SSL

#devops
1
Comments
8 min read
Nginx Rate Limiting vs API Gateway: Picking the Right Layer
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Nginx Rate Limiting vs API Gateway: Picking the Right Layer

#devops
1
Comments
8 min read
Docker BuildKit Cache Setup That Actually Speeds Up CI
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Docker BuildKit Cache Setup That Actually Speeds Up CI

#docker #devops
1
Comments
7 min read
RDS Backup Restore Testing: 7 Checks Before You Trust It
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RDS Backup Restore Testing: 7 Checks Before You Trust It

#devops
1
Comments
7 min read
EventBridge Retry Policy vs SQS DLQ: The Right Call in Production
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EventBridge Retry Policy vs SQS DLQ: The Right Call in Production

#devops
1
Comments
7 min read
GitHub Actions Reusable Workflow Environment Protection Checklist
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GitHub Actions Reusable Workflow Environment Protection Checklist

#cicd #devops
1
Comments
7 min read
Jenkins Shared Library Structure: vars/ vs src/ for Pipelines
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Jenkins Shared Library Structure: vars/ vs src/ for Pipelines

#cicd #devops
1
Comments
9 min read
Helm Rollback Strategy: Safe Values Promotion in Production
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Helm Rollback Strategy: Safe Values Promotion in Production

#kubernetes #devops
1
Comments
6 min read
EKS IRSA Setup: Fix S3 AccessDenied From Node IAM Roles
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EKS IRSA Setup: Fix S3 AccessDenied From Node IAM Roles

#aws #devops
1
Comments
7 min read
Self-Hosted Loki vs Grafana Cloud for Rust Server Logs
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Self-Hosted Loki vs Grafana Cloud for Rust Server Logs

#monitoring #devops
1
Comments
7 min read
Argo CD Rollback Checklist for Safe GitOps Sync
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Argo CD Rollback Checklist for Safe GitOps Sync

#devops
1
Comments
7 min read
Terraform Vault Secrets: Fix Plaintext State Leaks
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Terraform Vault Secrets: Fix Plaintext State Leaks

#terraform #devops
1
Comments
6 min read
Fix Ansible Bootstrap Playbook Failing on Fresh Cloud Servers
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Fix Ansible Bootstrap Playbook Failing on Fresh Cloud Servers

#devops
1
Comments
8 min read
Helm Values Staging vs Prod: 3 Mistakes That Broke Uptime
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Helm Values Staging vs Prod: 3 Mistakes That Broke Uptime

#kubernetes #devops
2
Comments
7 min read
How to Alert on Lambda Failures with CloudWatch Alarms and SNS
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How to Alert on Lambda Failures with CloudWatch Alarms and SNS

#aws #devops
1
Comments
8 min read
kubectl apply Not Updating Pods? Fix the Stale Image Pitfall
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kubectl apply Not Updating Pods? Fix the Stale Image Pitfall

#devops
1
Comments
7 min read
7 Bash Backup Script Mistakes That Break Cron and S3 Sync
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7 Bash Backup Script Mistakes That Break Cron and S3 Sync

#aws #devops
1
Comments
6 min read
kubectl rollout restart vs delete pod: Which Is Safer?
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kubectl rollout restart vs delete pod: Which Is Safer?

#devops
1
Comments
7 min read
Fixing n8n Bedrock Automation: Throttling, Duplicates, Cost Blowouts
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Fixing n8n Bedrock Automation: Throttling, Duplicates, Cost Blowouts

#devops
1
Comments
7 min read
Fix nginx-proxy SSL Certs Not Issuing in Docker Compose
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Fix nginx-proxy SSL Certs Not Issuing in Docker Compose

#docker #devops
Comments
8 min read
Terraform AWS Modules vs Custom: VPC and IAM Done Right
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Terraform AWS Modules vs Custom: VPC and IAM Done Right

#aws #terraform #devops
1
Comments
8 min read
CI/CD Checklist: Quality Gates, Approvals, and Rollback Paths
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CI/CD Checklist: Quality Gates, Approvals, and Rollback Paths

#cicd #devops
1
Comments
8 min read
Validate AI-Generated Kubernetes Manifests Before They Hit Git
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Validate AI-Generated Kubernetes Manifests Before They Hit Git

#kubernetes #devops
1
Comments
7 min read
GPT Slack Bot for CI Failures: 3 Mistakes We Made
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GPT Slack Bot for CI Failures: 3 Mistakes We Made

#devops
3
Comments
8 min read
Fix Silent Loki SSH Brute-Force Detection Gaps in Grafana
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Fix Silent Loki SSH Brute-Force Detection Gaps in Grafana

#monitoring #devops
1
Comments
7 min read
PostgreSQL Archive Old Rows Script: 3 Mistakes We Made
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PostgreSQL Archive Old Rows Script: 3 Mistakes We Made

#devops
1
Comments
8 min read
Stop Credential Stuffing on Login with Cloudflare WAF Rules
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Stop Credential Stuffing on Login with Cloudflare WAF Rules

#devops
Comments
7 min read
Prometheus Game Server Exporter Checklist for Player Metrics
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Prometheus Game Server Exporter Checklist for Player Metrics

#monitoring #devops
1
Comments
7 min read
3 WireGuard VPN Mistakes That Broke Our Remote Server Access
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3 WireGuard VPN Mistakes That Broke Our Remote Server Access

#devops
2
Comments 1
7 min read
Terraform Cloudflare DNS Checklist Before Every Apply
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Terraform Cloudflare DNS Checklist Before Every Apply

#terraform #devops
Comments
8 min read
Discord Bot Docker Restart: 3 Mistakes That Bit Us in Prod
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Discord Bot Docker Restart: 3 Mistakes That Bit Us in Prod

#docker #devops
2
Comments 2
7 min read
Secure Kubernetes Dashboard with Cloudflare Zero Trust Tunnel
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Secure Kubernetes Dashboard with Cloudflare Zero Trust Tunnel

#kubernetes #devops
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8 min read
Molecule Ansible Testing: 3 Docker Pitfalls That Fooled Us
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Molecule Ansible Testing: 3 Docker Pitfalls That Fooled Us

#docker #devops
Comments
7 min read
Configure Docker Macvlan and Ipvlan for Dedicated LAN IPs
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Configure Docker Macvlan and Ipvlan for Dedicated LAN IPs

#docker #devops
Comments
7 min read
Fix Predictive Alerting False Positives in Prometheus Python Models
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Fix Predictive Alerting False Positives in Prometheus Python Models

#python #monitoring #devops
1
Comments
8 min read
AWS Cost Anomaly Detection Script: A Bash Alert Checklist
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AWS Cost Anomaly Detection Script: A Bash Alert Checklist

#aws #devops
Comments
9 min read
Build a Self-Hosted Log Anomaly Detector to Cut Alert Noise
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Build a Self-Hosted Log Anomaly Detector to Cut Alert Noise

#devops
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8 min read
ML Anomaly Detection in Loki Logs: Per-Entity Isolation Forest
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ML Anomaly Detection in Loki Logs: Per-Entity Isolation Forest

#devops
Comments
8 min read
Terraform Drift Detection in CI: Alert-Only vs Auto-Remediate
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Terraform Drift Detection in CI: Alert-Only vs Auto-Remediate

#terraform #devops
Comments
7 min read
Building an Online Anomaly Scoring Sidecar for Grafana Alerts
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Building an Online Anomaly Scoring Sidecar for Grafana Alerts

#monitoring #devops
Comments
7 min read
Grafana Alerting Checklist: Wiring AI Anomaly Scores Correctly
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Grafana Alerting Checklist: Wiring AI Anomaly Scores Correctly

#monitoring #devops
Comments
8 min read
Ansible Dynamic Inventory for EC2 Fleets: 7 Tuning Tips
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Ansible Dynamic Inventory for EC2 Fleets: 7 Tuning Tips

#aws #devops
Comments
7 min read
Cloudflare Workers Rate Limiting: 3 KV Mistakes We Made
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Cloudflare Workers Rate Limiting: 3 KV Mistakes We Made

#devops
Comments
8 min read
Automate AWS Cost Reports with Python, boto3, and SES
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Automate AWS Cost Reports with Python, boto3, and SES

#aws #python #devops
1
Comments
10 min read
Makefile Patterns for Terraform and Infra Repos That Actually Scale
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Makefile Patterns for Terraform and Infra Repos That Actually Scale

#terraform #devops
Comments
10 min read
Query AWS Runbooks in Plain English with Bedrock Knowledge Bases
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Query AWS Runbooks in Plain English with Bedrock Knowledge Bases

#aws #devops
Comments
10 min read
Fix GitHub Copilot Terraform Security Risks Before They Hit Prod
oleksandr_kuryzhev_42873f profile

Fix GitHub Copilot Terraform Security Risks Before They Hit Prod

#terraform #cicd #security #devops
Comments
11 min read
Self-Hosted Ollama Homelab: 3 Mistakes Running Local LLMs
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Self-Hosted Ollama Homelab: 3 Mistakes Running Local LLMs

#devops
Comments
8 min read
Automate Kubernetes RBAC Audits with Python and a Custom Controller
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Automate Kubernetes RBAC Audits with Python and a Custom Controller

#kubernetes #python #devops
Comments
10 min read
Docker Rootless Mode Security Hardening Checklist
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Docker Rootless Mode Security Hardening Checklist

#docker #security #devops
Comments
11 min read
Secure Docker Multi-Stage Builds with Trivy CVE Gates
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Secure Docker Multi-Stage Builds with Trivy CVE Gates

#docker #devops
Comments
10 min read
Fix Untagged AWS Resources Automatically with Python and Boto3
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Fix Untagged AWS Resources Automatically with Python and Boto3

#aws #python #devops
1
Comments 1
10 min read
AI Anomaly Detection in Grafana: 3 Mistakes We Made
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AI Anomaly Detection in Grafana: 3 Mistakes We Made

#monitoring #devops
1
Comments 1
11 min read
Automate Cloudflare DNS Failover with Ansible During Incidents
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Automate Cloudflare DNS Failover with Ansible During Incidents

#devops
Comments
10 min read
Fix ArgoCD Liquibase Migration Failures in GitOps Pipelines
oleksandr_kuryzhev_42873f profile

Fix ArgoCD Liquibase Migration Failures in GitOps Pipelines

#cicd #devops
Comments
9 min read
Kubernetes Bash Health Check Scripts vs Native Probes
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Kubernetes Bash Health Check Scripts vs Native Probes

#kubernetes #devops
Comments
11 min read
Loki Multi-Cluster Log Aggregation Across AWS Regions
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Loki Multi-Cluster Log Aggregation Across AWS Regions

#aws #devops
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10 min read
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