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Add warning about the impact of not following the config guidelines
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@ -33,8 +33,7 @@ There are two options for provisoning IPs for the Kubernetes cluster on Azure:
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## Azure Prerequisites
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You must meet the following infrastructure prerequisites in order
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to successfully deploy Docker UCP on Azure:
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You must meet the following infrastructure prerequisites to successfully deploy Docker UCP on Azure. **Failure to meet these prerequisites may result in significant errors during the installation process.**
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- All UCP Nodes (Managers and Workers) need to be deployed into the same Azure
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Resource Group. The Azure Networking components (Virtual Network, Subnets,
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@ -104,7 +103,13 @@ an Azure subnet.
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See the [Kubernetes Azure Cloud Provider Config](https://github.com/kubernetes/cloud-provider-azure/blob/master/docs/cloud-provider-config.md) for more details on this configuration file.
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## Considerations for IPAM Configuration
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## Guidelines for IPAM Configuration
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> **Warning**
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>
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> You must follow these guidelines and either use the appropriate size network in Azure or take the proper action to fit within the subnet.
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> Failure to follow these guidelines may cause significant issues during the
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> installation process.
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The subnet and the virtual network associated with the primary interface of the
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Azure virtual machines need to be configured with a large enough address
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@ -217,7 +222,9 @@ to installing UCP in order to override the default `azure_ip_count` value of 128
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addresses per node. See [UCP configuration file](../configure/ucp-configuration-file/)
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to learn more about the configuration file, and other variables that can be staged pre-install.
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> Note: Do not set the `azure_ip_count` to a value of less than 6 if you have not
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> **Note**
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>
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> Do not set the `azure_ip_count` to a value of less than 6 if you have not
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> manually provisioned additional IP addresses for each Virtual Machine. The UCP
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> installation will need at least 6 IP addresses to allocate to the core UCP components
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> that run as Kubernetes pods. That is in addition to the Virtual
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@ -289,7 +296,9 @@ node. Finally if you have set the [Ip Count
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Value](#adjusting-the-ip-count-value) you will need to add `--existing-config`
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to the install command below.
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> Note: The `pod-cidr` range must match the Azure Virtual Network's Subnet
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> **Note**
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>
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> The `pod-cidr` range must match the Azure Virtual Network's Subnet
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> attached the hosts. For example, if the Azure Virtual Network had the range
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> `172.0.0.0/16` with Virtual Machines provisioned on an Azure Subnet of
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> `172.0.1.0/24`, then the Pod CIDR should also be `172.0.1.0/24`.
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