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Tier 1 · Telecom and hybrid infrastructure

Kubernetes and Red Hat OpenShift architecture

Red Hat OpenShift and Kubernetes for regulated, multi-tenant estates

We design, upgrade and operate production clusters on bare-metal and VMware. Workload admission, telecom network paths and GitOps lifecycle controls are designed and tested together, with restricted-v2 validation on supported OpenShift application workloads.

2-week Assessment Sprint, $14,500 fixed · 100% credited toward an annual retainer or managed agreement signed within 30 days

Red Hat OpenShift HA Control Plane & GitOps ArchitectureProduction topology detailing 3-node etcd quorum, OVN-Kubernetes / Multus CNI segmentation, restricted-v2 SCC admission and Argo CD reconciliation.

Where container platforms break

Clusters that work in the lab fail when enterprise controls or telecom traffic arrive: images require root, upgrades encounter incompatible CRDs, flat pod networks fail segmentation reviews, and manual oc/kubectl changes drift between staging and production. Storage recovery and external identity, DNS and registry dependencies often remain untested until the first incident.

What we engineer

Hardened restricted-v2 Workload Engineering

Refactor container images, Helm charts and Kustomize overlays for arbitrary non-root UIDs, RuntimeDefault seccomp and dropped capabilities. Validate OpenShift SCC admission and add read-only root filesystems where applications support them. Review vendor-required Operator and infrastructure privilege exceptions separately.

Carrier & Hybrid Networking

Engineer Multus secondary interfaces, SR-IOV, IPv4/IPv6 dual-stack and MetalLB/BGP where supported by the distribution and hardware. Define ingress/egress NetworkPolicy, service-mesh mTLS and traffic-path acceptance checks around the actual isolation and latency requirements.

Multi-Cluster Lifecycle & Upgrades

Manage bare-metal IPI/UPI and vSphere clusters through reviewed GitOps changes. Validate the supported update graph, EUS transitions, deprecated APIs, Operator compatibility, disruption budgets and drain behavior; rehearse upgrades and etcd recovery for the installed release.

Day-2 Observability & Storage Integration

Integrate ODF/Ceph or supported vSAN CSI storage classes, Prometheus/Thanos metrics and Loki/Vector log pipelines. Test persistence, storage expansion, restore behavior, alert delivery and audit-log routing with the application owners.

Reference stack and standards

Distributions
Red Hat OpenShift Container Platform 4.x, upstream Kubernetes.
Networking & Storage
OVN-Kubernetes, Multus, SR-IOV, MetalLB, ODF/Ceph, VMware CNS/CSI; Calico or Cilium on distributions that support the selected integration.
Governance
OpenShift restricted-v2 SCC, OPA Gatekeeper, Kyverno and applicable CIS Kubernetes Benchmarks; version and distribution constraints are recorded in the design.

restricted-v2 does not require a read-only root filesystem by itself. Operators may need reviewed vendor-supported permissions. Upgrade availability depends on workload redundancy, application behavior and the supported platform path.

Reference architecture

T1Telecom and hybrid infrastructure

Separate management, workload migration and hybrid routing paths, joined by validated platform dependencies.

Telecom management

  1. Ericsson OSS-RCLegacy node inventory · phased retirement
    Phased node re-homing
  2. Ericsson ENMRAN / Core / IMS · REST NBI · cmedit · AMOS
    Northbound telemetry
  3. FM / PM / CM mediation3GPP · SNMPv3 · VES collectors · Kafka

Virtualization & container platform

  1. VMware vSphere / vSANSPBM · I/O baselines · VM dependencies
    Warm / cold migration; final cutover
  2. OpenShift VirtualizationMTV · KubeVirt · ODF / supported CSI
    Runs on the cluster
  3. Red Hat OpenShiftrestricted-v2 workloads · Multus / SR-IOV

Hybrid storage & virtualization

  1. On-premise routingIPAM · segmentation · BGP / BFD where supported
    Hybrid interconnect
  2. vSAN ESA & OpenShift VirtualizationRedundant paths · centralized firewall inspection
    Routed workload access
  3. Hardened cluster foundationOpenShift OCP · restricted-v2 SCCs · ODF · Multi-tenant namespaces · FinOps
Connections across boundaries
Ericsson ENM / Red Hat OpenShift
ENM platform sizing follows the vendor-supported deployment model.
FM / PM / CM mediation / Hardened cluster foundation
Approved telemetry destinations use the defined hybrid routing and security policy.

Southbound element mediation is validated per installed ENM and node software release. MTV warm migrations replicate active blocks in the background and execute final cutover inside a scheduled window with verified ESXi fallback.

Download Mermaid source (.mmd)

Deliverables in your repository

You keep the delivered code, manifests, diagrams, runbooks and validation evidence in your repositories. We agree the systems, acceptance criteria and access prerequisites in the SOW.

  1. Declarative Cluster-as-Code Repository

    Versioned machine configuration, ingress controllers, storage classes, namespaces and RBAC bindings with environment-specific GitOps overlays.

  2. Admission-Validated Workload Manifests

    Refactored Helm/Kustomize artifacts with restricted-v2 test evidence for applicable workloads and a separate register of approved exceptions.

  3. Network Segmentation Matrix

    Documented and tested ingress/egress rules, secondary networks, IP assignments and service-mesh mTLS policies included in the scope.

  4. Automated Upgrade & DR Playbook

    API-deprecation scans, update prerequisites, disruption checks, validated etcd recovery procedures and application-data restore test records.

  5. Multi-Cluster Reference Architecture (.mmd)

    Control-plane sizing, ingress and egress segmentation and the ODF storage layout as Mermaid source in your repository.

  6. Project-Admin RBAC Catalog

    Least-privilege OIDC group bindings, namespace quotas and LimitRanges, so tenants run under project-admin without cluster-admin exceptions.

Inside the 2-week Assessment Sprint

What the $14,500 sprint covers for this service. Access stays read-only throughout, and you keep the output whether or not you continue.

  1. Days 1–3

    Cluster and workload inventory

    Read-only review of cluster versions, Operators, SCC assignments, anyuid and privileged exceptions, network attachments and storage classes.

  2. Days 4–6

    restricted-v2 and network gap map

    Workloads that cannot run under restricted-v2, Multus/SR-IOV and IPAM conflicts, and upgrade blockers such as PodDisruptionBudgets and deprecated APIs.

  3. Days 7–9

    Reference architecture and remediation order

    Cluster reference architecture in Mermaid (.mmd) source, the workload remediation order and the upgrade and recovery rehearsal plan.

  4. Day 10

    Read-out and backlog

    Findings, the policy and RBAC changes required and a fixed-scope backlog for your team or the paired principal pod.

Engineering scope

We migrate and support telecom management systems and hybrid infrastructure, automate how workloads are validated and shipped, and build the portals and network API integrations that expose those platforms to your teams and customers.

Kubernetes & Red Hat OpenShift

An upgrade that stalls mid-drain, or a workload that cannot recover its data, costs more than the platform saved. Readiness has to be proven for the cluster and for each application separately.

Best for

A cluster can be healthy while a workload fails admission, cannot pull an image or cannot recover its data. We check platform readiness and application behavior separately, including external identity, DNS and storage dependencies.

Bring to the review

Distribution and release, cluster layout, registry connectivity, storage classes and workload requirements.

Implementation

Record platform and Operator versions, registry access, identity, networking and storage prerequisites. Validate workload manifests against the required SCC and namespace permissions, then test ingress, persistence and the approved deployment path.

Prerequisites

Distribution and release, cluster layout and node roles, registry and image sources, identity provider, storage classes and CSI drivers, the Operator inventory, and a verified backup procedure for etcd and persistent data.

Operational support

Investigate cluster and workload faults with platform and application owners. Plan upgrade checks and recovery tests for cluster state, persistent data and external services, using the procedures for the installed release.

Acceptance evidence

Cluster readiness checklist, workload admission results, versioned configuration and separate platform and application recovery records.

  • Representative workload, ingress, identity and storage checks pass.
  • Platform and application recovery evidence recorded separately.
  • Operator compatibility, upgrade checks and ownership documented.
Responsibilities & dependencies

Identify platform, application and infrastructure owners. Confirm access, vendor subscriptions, change approval and who validates each workload and its data recovery.

Support coverage

Normal support:
Monday–Friday, 8 a.m.–6 p.m. Eastern time (America/New_York), excluding public holidays. Supported systems, access and responsibilities are agreed in writing.
24/7 emergency on-call:
Part of managed operations. For critical customer outages under that coverage, reported through the agreed channel, we aim to investigate, provide substantive engineering updates and attempt resolution within four elapsed hours of emergency receipt, on a best-effort basis.
Resolution:
Resolution within that window is not guaranteed. Other cases follow your SLA.
Licenses and entitlements:
Vendor licenses and support entitlements are separate from our services.

Planning considerations

  1. Infrastructure
  2. Kubernetes or OpenShift
  3. Application workloads

Explore a sample service scope. We agree your interfaces, permissions and acceptance criteria before delivery; use the engagement design for deployment.

Shared foundations
Both platforms need workload ownership, identity and RBAC, networking, storage, observability and recovery planning. Define which responsibilities belong to the platform team, application team and infrastructure or cloud provider.
Upstream Kubernetes and distributions
The selected distribution determines installation, add-ons and support arrangements. Check component version skew and the distribution upgrade path together; an upstream version rule alone is not an upgrade plan.
Red Hat OpenShift
OpenShift adds an integrated platform lifecycle. Plan against the installed release and update path; check each Operator and its dependencies separately. Extended support depends on the release and subscription entitlement, and Operator lifecycles can differ from the platform.
Recovery has four layers
An etcd backup protects cluster state; it does not by itself restore application data. Plan control-plane recovery, application configuration and secrets, persistent volumes and databases, and external dependencies such as identity and DNS. The cited OpenShift 4.18 procedure requires an etcd backup from the same z-stream release. Use documentation for the installed version and measure a complete application restore against agreed recovery time and data-loss objectives.

A closer look at the deliverables

Use our sample checklists to scope work and review deliverables. Adapt them to your environment. They are illustrative, not customer results, vendor-certified procedures or executable production instructions.

Illustrative expected result

Assessment summary

Kubernetes / OpenShift readiness checklist

Prerequisites
Inventory clusters, versions, Operators, workloads, network and storage dependencies. Check lifecycle compatibility and identify application owners.
Expected result / acceptance threshold
Platform and application restore evidence recorded separately; measured recovery meets the agreed objectives.
Open the full worksheet