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Various external services are required for the initial deployment of the Telco Cloud Platform Core architecture components and the Tanzu Kubernetes grid cluster.
The required external services and dependencies are listed in the following table and described below:
Service | Purpose |
DNS | Provides name resolution for the various components in the solution. |
DHCP | Provides automated IP address allocation for the Tanzu Kubernetes grid cluster. Ensure that this service is available locally to each site. |
NTP | Synchronizes time between the various telco core management components at the central data center or RDC. |
During Telco Cloud Platform core deployment, you must provide the DNS domain information to configure the various components. DNS resolution must be available for all the components in the Telco Cloud Platform Core solution. Required DNS records include the servers, VMs, and virtual IPs used. Ensure that both forward and reverse DNS resolution is functional for each component before deploying Telco Cloud Platform Core management components or creating any workload domains.
Telco Cloud Platform Virtual Core uses DHCP to automatically configure the Tanzu Kubernetes cluster with an IPv4 address at the data center. The scope of DHCP must be large enough to accommodate all initial and future Kubernetes workloads to be used in the Telco Cloud Platform Core solution.
Note: While deploying the Tanzu Kubernetes Grid control plane, dedicate a static IP address for the Kubernetes API endpoint.
All management components must be synchronized against a standard time using the NTP. Telco Cloud Platform Core components such as vCenter Single Sign-On (SSO) are sensitive to a time drift between distributed components. The synchronized time between the various components also helps with troubleshooting efforts. Each ESXi node in the Telco Cloud Platform Core solution must be time-synchronized.
To meet the NTP source requirements, ensure that: