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Stay up to date with our latest articles about cloud-native technologies, Kubernetes, and DevOps.

1210 posts

Failure Domains in Distributed Edge Architectures

Failure Domains in Distributed Edge Architectures

A Multi-PoP architecture does not automatically reduce failures. What matters is which components, lines, routing paths, and backends share the same failure domain. By analyzing failure boundaries instead of individual components, common dependencies can be identified earlier, allowing traffic, protection functions, and failover to be decoupled effectively.

Edge Platform Instead of Add-on: Understanding Architectural Boundaries

Edge Platform Instead of Add-on: Understanding Architectural Boundaries

The ayedo Edge Cloud is not a single add-on feature for Managed Kubernetes nor a front-end load balancer. It forms an independent architectural layer for public traffic: DNS, routing, protection, TLS, load balancing, and backend connectivity are centrally operated in front of various compute environments. This keeps applications and clusters interchangeable without redesigning public access.

Own Network Architecture and Digital Sovereignty

Own Network Architecture and Digital Sovereignty

Digital sovereignty in the public edge layer is not demonstrated by promises of origin, but by technical control points: Who controls routing, IP addressing, traffic distribution, protection functions, and operations? An own Autonomous System and network infrastructure provide the architectural foundation for this – but do not replace reliable operational processes.

Kubernetes Beyond the Edge: Integration Without Provider Lock-In

Kubernetes Beyond the Edge: Integration Without Provider Lock-In

Kubernetes clusters do not need to manage public traffic ingress, DDoS protection, or TLS termination themselves. A provider-independent edge layer separates these tasks from cluster operations. This allows clusters at ayedo, in your own data center, or with other providers to be connected via central routing, security, and failover functions.

The Edge as a Protective Layer for Applications and APIs

The Edge as a Protective Layer for Applications and APIs

Publicly accessible applications and APIs should not be directly connected to their backends. An upstream edge layer handles DDoS protection and scrubbing, WAF checks, TLS termination, and shielding of the origin infrastructure. This creates security-by-architecture: protection is anchored where incoming traffic is first controlled and processed.

Active-Active Architecture for Highly Available Backends

Active-Active Architecture for Highly Available Backends

High availability is not achieved solely through redundant backends. The entry layer must also withstand failures of individual locations, network paths, or components. A distributed active-active architecture combines multiple active edge instances with backend health checks and controlled failover. The key is to consider edge and compute together.

Backend Cloaking and Proxy Protocol in Edge Architecture

Backend Cloaking and Proxy Protocol in Edge Architecture

Backend Cloaking separates the publicly accessible entry layer from the actual application and API backends, keeping internal target addresses hidden from clients. Proxy Protocol complements this decoupling by allowing connection information to be selectively passed to the backend. The key is the combination of edge proxy, network rules, and clearly defined trust boundaries.

Anycast and Load Balancing as the Foundation of Edge Architecture

Anycast and Load Balancing as the Foundation of Edge Architecture

Anycast load balancing combines global reachability with targeted traffic distribution. Anycast determines which Edge PoP handles a request, while Layer 4 and Layer 7 load balancing direct the traffic there based on connections, protocols, and application characteristics. Only the interplay creates a resilient public access to applications and APIs.

From DNS to Backend: The Request Path at the Edge

From DNS to Backend: The Request Path at the Edge

A request to an application traverses multiple technical layers: Anycast DNS provides an accessible entry point, the internet routes the traffic to the edge, where load balancing, TLS termination, and security checks occur. Only then is the request forwarded via backend routing to a healthy service. This chain must be planned as a cohesive operational process.

Edge and Compute: Two Layers of Modern Application Architecture

Edge and Compute: Two Layers of Modern Application Architecture

A robust **Edge-Compute Architecture** separates the public entry from the actual application execution. The Edge Cloud handles routing, protection, TLS termination, and load balancing. Compute platforms execute workloads. This separation reduces coupling, improves failover options, and allows applications to operate independently of the underlying cluster or provider.

Operating Kubernetes DNS and Edge Routing Across Provider Boundaries

Operating Kubernetes DNS and Edge Routing Across Provider Boundaries

In a Kubernetes multi-cloud environment, internal service DNS, public DNS zones, and edge routing must share the same lifecycle. Managing records, endpoints, and routing independently leads to outdated targets and unclear failover states. A coordinated model separates responsibilities, centralizes public ingress, and makes changes traceable.

Edge Cloud as a Network Boundary for Distributed Clusters

Edge Cloud as a Network Boundary for Distributed Clusters

A distributed Kubernetes landscape requires a clear boundary between public traffic and internal compute infrastructure. An Edge Cloud assumes this boundary, consolidating routing, protection, and failover while keeping backends concealed. Its own Autonomous System and network infrastructure provide an independent foundation for multi-PoP and active-active architectures.

Planning Kubernetes Failover for Ingress and API Server

Planning Kubernetes Failover for Ingress and API Server

A resilient Kubernetes Ingress failover doesn't start with DNS but with clearly defined failure patterns and meaningful backend health checks. Active-active architectures reduce downtime but don't resolve faulty applications or unclear responsibilities. The edge must assess status, routing, and failover independently of individual clusters.

Running Kubernetes Productively with Your Own Edge Connection

Running Kubernetes Productively with Your Own Edge Connection

Kubernetes compute and public application ingress do not have to reside with the same provider. An independent edge layer handles Anycast, DNS, load balancing, TLS, protection functions, and backend cloaking, while the cluster is operated with the chosen provider or in your own data center. A clear division of roles between edge, network, and compute is crucial.

Connecting Kubernetes Gateway Across Providers to the Edge

Connecting Kubernetes Gateway Across Providers to the Edge

The Kubernetes Gateway API can form a portable interface between applications and public traffic. When connected to a provider-independent edge layer, routing, TLS, protection, and backend shielding remain separate from the network and cloud stack of the cluster. This simplifies multi-cloud scenarios, enhances resilience, and reduces infrastructure dependencies.

ACME DNS Challenge with the Edge Cloud in Kubernetes

ACME DNS Challenge with the Edge Cloud in Kubernetes

The ACME DNS-01 Challenge enables TLS certificates for Kubernetes services without making the backend accessible from the internet. Key factors include separate DNS permissions, a unique domain assignment, and the question of where TLS is terminated. Behind the ayedo Edge Cloud, this termination point is at the public edge, not necessarily within the cluster.

Ingress and Gateway: Deriving DNS Records from Hosts

Ingress and Gateway: Deriving DNS Records from Hosts

Kubernetes resources already contain the logical mapping between hostnames and applications. An automated DNS process can evaluate this information from Ingress or Gateway API, generate appropriate records for the edge address, and synchronize changes. Clear responsibilities, secure deletion logic, and the connection of DNS, edge routing, and backend targets are crucial.

Automatically Provisioning Load Balancers from Kubernetes

Automatically Provisioning Load Balancers from Kubernetes

Kubernetes can trigger the provisioning of a public load balancer as a declarative process. A Kubernetes Service describes the desired access to the application, while the ayedo Edge Cloud handles public accessibility, routing, and protection. This reduces manual network configuration and cleanly separates workload and edge responsibilities.

Provider-Independent Load Balancers for Kubernetes APIs

Provider-Independent Load Balancers for Kubernetes APIs

The Kubernetes API Server is not a typical ingress target but the central control point of a cluster. A Kubernetes API Server Load Balancer must therefore combine accessibility, failover, and access protection. The ayedo Edge Cloud publishes Kubernetes APIs provider-independently via Anycast Layer 4 and protects backend addresses through Backend Cloaking.