Split Horizon - Andrew Mercer

Andrew Mercer

▶ Docs
- ▶ Linux
  - Home
  - ▶ AlmaLinux
  - Bash one-liners
  - ▶ Fedora
    - Keyboard and mouse sharing
    - Upgrading Fedora
  - ▶ Kickstart
    - Kickstart Knowledge Dump
  - ▶ Linux Filesystems
    - Home
    - ▶ Ceph
      - Home
    - ▶ ext4
      - Home
    - ▶ Linux Volume Management (LVM)
      - Home
    - ▶ Network File System (NFS)
      - Home
    - ▶ Redundant Array of Inexpensive Disks (RAID)
    - ▶ xfs
      - Home
  - ▶ Linux from scratch (LFS)
    - Home
  - Linux fun stuff
  - ▶ Linux high availability
    - ▶ Corosync
      - Highly available lamp stack with Corosync
      - Home
  - Linux router
  - ▶ Linux tools
    - Fdisk
    - History
    - Nmap
    - Tmux
  - Replace A Hard Drive In A Raid1 Array
  - Rtl8125_driver_ubuntu_server
  - ▶ Ubuntu
    - Autoinstall
    - Install Ubuntu Server
  - ▶ Windows Subsystem for Linux Wsl
    - Install WSL
- ▶ Cloud
  - Agility
  - ▶ Amazon Web Services (AWS)
    - ▶ AWS certification
    - ▶ AWS Compute
    - AWS create IAM user
    - ▶ AWS Secrets Manager
    - ▶ AWS virtual private cloud (VPC)
      - Home
    - Aws_networking
    - Home
    - Install the AWS cli tool
  - ▶ Azure
    - ▶ Azure certification
    - ▶ Azure compute infrastructure
    - ▶ Azure Container apps
    - ▶ Azure Container instances
    - ▶ Azure Front Door
      - Azure Front Door best practices
      - Home
    - ▶ Azure Functions
      - Home
    - ▶ Azure Key Vault
      - Home
    - ▶ Azure Kubernetes services
      - AKS troubleshooting
      - Home
    - ▶ Azure Management and Governance
    - ▶ Azure SQL
      - Azure SQL Hyperscale
      - ▶ Lorem
        
        ▶ Ipsum
        
        Ipsum
    - ▶ Azure Traffic Manager
      - Home
    - ▶ Azure Virtual Network (VNET)
    - ▶ Azure VPN Gateway
      - Create an AWS to Azure site-to-site VPN
    - Azure_networking
    - ▶ Bicep
      - Bicep vs terraform
      - Home
    - Home
    - Install the Azure cli tool
    - Running Azure on-prem
  - Cloud provider service equivalents
  - Create an AWS to Azure site-to-site VPN
  - ▶ Digital Ocean
    - Do_cli
    - Home
  - Elasticity
  - Geo-distribution
  - ▶ Google Cloud Platform (GCP)
    - Gcp_create_iam_user
    - Gcp_networking
    - Home
    - Install the GCP gcloud cli tool
    - ▶ Secret Manager
      - ▶ Lorem
        
        ▶ Ipsum
        
        Ipsum
  - ▶ Hetzner
    - Hcloud_cli
    - Home
  - High availability
  - IaaS/PaaS/SaaS
  - Multi-cloud cli tool container
  - ▶ OpenStack
    - Home
    - Neutron
  - Scaling
  - Well-Architected Framework
- ▶ Infrastructure as Code (IaC)
  - ▶ Ansible
  - ▶ Pulumi
    - Pulumi
  - ▶ Terraform
- ▶ Observability
  - ▶ Elasticsearch
    - ▶ Install Elasticsearch
  - ▶ Filebeat
  - ▶ Grafana
    - Home
  - ▶ LGTM
    - Home
  - ▶ Logstash
    - Home
  - ▶ Loki
    - Home
  - ▶ Mimir
    - Home
  - ▶ Monit
    - Home
  - ▶ Opensearch
  - ▶ Prometheus and Grafana
    - Home
  - ▶ Tempo
    - Home
- ▶ DevOps
  - Home
  - ▶ Jenkins
    - Jenkins
  - Software Release Strategies
- ▶ CI CD
- ▶ Infrastructure
  - ▶ Domain Name System (DNS)
    - ▶ BIND
    - ▶ CoreDNS
      - CoreDNS
    - Dns Attacks
    - ▶ DNS Explained
    - ▶ DNS Providers
      - ▶ Namcheap
        
        Create Namecheap DNS records
    - ▶ Dnsmasq
      - dnsmasq
    - ▶ DNSSEC
      - Home
    - Geolocation routing
    - ▶ OctoDNS
      - Home
    - ▶ PiHole
      - PiHole
    - Split Horizon
    - ▶ Systemd Resolved
      - systemd-resolved
    - ▶ Unbound
      - Unbound
    - Zone Delegation
  - ▶ Kernel-based virtual machine (KVM)
  - ▶ Mail
    - Mail command-line client
    - ▶ Postfix
      - Postfix as a mail relay or null client
    - ▶ SMTP relay services
      - Protonmail Bridge
- ▶ Site Reliability
- ▶ Desktop
  - ▶ Applications
    - ▶ Audacity
      - Create a ringtone
    - ▶ Bruno
      - Configure Bruno
      - Install Bruno
- ▶ Distributed Social Networking
  - ▶ AT Protocol
    - AT Protocol
  - ▶ Bluesky
  - ▶ Mastodon
    - Home
    - Install Mastdon
  - ▶ Matrix
    - Matrix
- ▶ Jellyfin
- ▶ Keycloak
  - Home
  - Keycloak install
- ▶ Markdown
  - Markdown_formatting
- ▶ Message Queues
  - ▶ RabbitMQ
    - Home
- ▶ Networking
  - ▶ CCNA exam
    - Home
  - Hub_and_spoke
  - ▶ Network monitoring
    - Port mirroring
    - Tap devices
- ▶ Nextcloud
- ▶ OpenWrt
- ▶ OPNsense
- ▶ Quantum Computing
  - Basic Tenets of Quantum Computing
- ▶ Relational Database Management System (RDBMS)
  - ▶ Galera
    - Create Galera cluster
    - Home
  - ▶ MariaDB
    - Home
  - ▶ PostgreSQL
    - Home
    - Postgresql HA Citus
- ▶ Secret management
  - ▶ Infisical
    - Home
  - ▶ Vault
    - Install Vault
- ▶ Software architecture
  - Distributed architecture
- ▶ Software development
  - Burnout
- ▶ Technical Writing
- ▶ Version control
  - ▶ Git
  - ▶ GitHub
    - GitHub
    - ▶ GitHub Actions
      - GitHub Actions
    - Install self-hosted Github
  - ▶ GitLab
- ▶ Web
  - ▶ Apache
    - Home
  - ▶ Haproxy
    - Home
  - ▶ Nginx
  - ▶ Traefik
    - Home
- ▶ Windows
  - ▶ Windows Desktop
    - Add App to Startup
  - ▶ Windows Server
    - Home
- ▶ Blockchain
  - ▶ Cosmos
    - Home
  - ▶ Ethereum
    - Home
  - Home
- ▶ Artifical Intelligence (AI)
Getting Started
▶ Resume
▶ Ecology

Home / Docs / Infrastructure / Domain Name System (DNS) / Split Horizon

https://oneuptime.com/blog/post/2026-01-15-split-horizon-dns-dual-stack/view

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