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  • AWS

    calendar May 29, 2026 · 0 min read  ·
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  • Backup

    calendar May 29, 2026 · 0 min read  ·
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  • Resilience

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  • RPO

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  • RTO

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  • Blameless

    calendar Mar 8, 2026 · 0 min read  ·
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  • Devops

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  • Incident-Management

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  • Infrastructure

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  • Postmortem

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Mickael Asghar photo

Mickael Asghar

DevOps Engineer with expertise in cloud computing, automation, microservices, networking, and security - ensuring scalable, secure, and resilient IT systems.
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Recent Posts

  • Building and Validating an AWS Backup Strategy with Resilience Hub
  • The Blameless Postmortem Mindset: Why Engineers Who Write Them Stand Out
  • How I Prepared Our Java Spring App Servers to Capture JVM Diagnostics During a CPU Spike
  • LDAP Service Failure After VM Snapshot – Configuration Mismatch Resolution
  • Pi-hole and Unbound on Raspberry Pi 4: Private DNS and Network-Wide Ad Blocking
  • SELinux Context Mismatch: The Hidden Culprit in LDAP Certificate Renewal
  • Case Study - Automating Let's Encrypt Wildcard Certificates with Cloudflare DNS and Full (Strict) TLS Encryption
  • Migrating from ANS to Cloudflare Load Balancer: Zero-Downtime DNS Cutover with Pre-Configuration Strategy

Categories

LINUX 4 SECURITY 4 DEVOPS 3 INFRASTRUCTURE 3 TROUBLESHOOTING 3 SYSTEM ADMINISTRATION 2 AWS 1 CAREER 1 CI/CD PIPELINES 1 DATABASE 1 DATABASE ADMININISTRATION 1 HOMELAB 1 INCIDENT REPORTS 1 INFRASTRUCTURE MIGRATION 1
All Categories
AWS1 CAREER1 CI/CD PIPELINES1 DATABASE1 DATABASE ADMININISTRATION1 DEVOPS3 HOMELAB1 INCIDENT REPORTS1 INFRASTRUCTURE3 INFRASTRUCTURE MIGRATION1 INFRASTRUCURE1 JAVA1 KUBERNETES1 LINUX4 NETWORKING1 OPERATIONS1 PERFORMANCE1 SECURITY4 SITE RELIABILITY ENGINEERING1 SOFTWARE ENGINEERING1 SRE1 SYSTEM ADMINISTRATION2 TROUBLESHOOTING3
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Tags

SSL 4 INFRASTRUCTURE 3 MYSQL 3 TLS 3 ALERT 2 APACHE 2 CERTIFICATE 2 CERTIFICATE MANAGEMENT 2 CLOUDFLARE 2 DEVOPS 2 ENCRYPTION 2 LDAP 2 LINUX 2 MONITORING 2
All Tags
AD BLOCKING1 ALERT2 ALMALINUX1 APACHE2 API1 ARGOCD1 AUTOMATION1 AWS1 BACKUP1 BEST PRACTICES1 BLAMELESS1 CERTIFICATE2 CERTIFICATE MANAGEMENT2 CICD1 CLOUDFLARE2 CONNECTIVITY1 CPU1 CRC321 DEPLOYMENT1 DEVOPS2 DIAGNOSTICS1 DISKSPACEOPTIMISATION1 DNS1 DNSSEC1 DOCKER1 ED255191 EKS1 ENCRYPTION2 ENVIRONMENT1 FLASK1 GOLANG1 HEAP DUMP1 HOMELAB1 HTTP/21 INCIDENT1 INCIDENT-MANAGEMENT1 INDEX1 INFRASTRUCTURE3 JAVA1 JENKINS1 JVM1 KUBERNETES1 LDAP2 LDAPS1 LINUX2 LINUX SECURITY1 LOAD BALANCER1 LOGMANAGEMENT1 LOGROTATE1 METRICS1 MIGRATION1 MONITORING2 MYSQL3 NETWORKING1 OPENLDAP2 PERFORMANCE1 PI-HOLE1 PING1 POSTGRESQL1 POSTMORTEM1 PRIVACY1 PRIVILEDGES1 RASPBERRY PI1 RECURSIVE DNS1 RESILIENCE1 ROLE-BASES ACCESS PROFILES1 ROUTING1 RPO1 RTO1 SELF-HOSTED1 SELINUX1 SERVICE1 SLAPD1 SPRING1 SRE1 SSH1 SSL4 SSL/TLS1 STRATEGY1 SYSADMIN1 THREAD DUMP1 THRESHOLD1 TLS3 TOMCAT1 TROUBLESHOOTING2 UNBOUND1 USER CREATION1 VM SNAPSHOT1 WEB APPLICATIONS1 WORKBENCH1 ZERO DOWNTIME1
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