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docs: (IAC-1245) Add Section about Time Synchronization #123

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docs: (IAC-1245) Add Section about Time Synchronization #123

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10 changes: 10 additions & 0 deletions docs/REQUIREMENTS.md
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Expand Up @@ -19,6 +19,8 @@ Table of Contents
- [Configuration and Restrictions](#configuration-and-restrictions)
- [Bare metal and virtual machine storage example](#bare-metal-and-virtual-machine-storage-example)
- [Terraform storage example](#terraform-storage-example)
- [Additional Configuration](#additional-configuration)
- [Time Synchronization](#time-synchronization)
- [Examples](#examples)
- [vCenter/vSphere Sample tfvars File](#vcentervsphere-sample-tfvars-file)
- [Physical Machine or VM Sample Inventory File](#physical-machine-or-vm-sample-inventory-file)
Expand Down Expand Up @@ -165,6 +167,14 @@ Here is a sample entry that would be included in your terraform tfvars file to d

This snippet shows the four `misc_disks` created on the single store virtual machines.

## Additional Configuration

### Time Synchronization

It is recommended that your vSphere template or Bare Metal instances have a method of time synchronization implemented. This will prevent issues from occurring during the Kubernetes initialization phase.

By default, Ubuntu uses `timedatectl`/`timesyncd` to synchronise time, and they are available and active by default. For more information see this [documentation](https://ubuntu.com/server/docs/use-timedatectl-and-timesyncd) from Ubuntu, this documentation also provides information about configuring a private timeserver if the default public server from Ubuntu is not preferred.

## Examples

This section provides an example configuration based on the physical-machine and vSphere inventory files that are provided in this repository. You are expected to modify the inventory files to match your environment and your requirements.
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