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Ordering VMware HCX

Ordering VMware HCX

You can include the VMware HCX™ service with a new VMware Cloud Foundation for Classic - Automated instance or add the service to your existing instance.

Considerations when you install HCX

Review the following considerations before you install HCX.

Requirements on the number of ESXi servers

The HCX service mesh target cluster cannot have more than 51 VMware ESXi servers. HCX requires eight IP addresses in the vMotion subnet from the service mesh target cluster. Because of this requirement, if the number of ESXi servers exceeds 51, no IP addresses in the vMotion subnet are available for HCX.

For existing VCF for Classic - Automated with NSX-V instances, the service mesh target cluster is the default cluster.

Requirements on firewall rules

Before you install the HCX service, you must add a firewall rule to any existing firewalls.

  1. From the VMware Solutions console, click Resources > VCF for Classic - Automated from the left navigation pane.
  2. In the VCF for Classic - Automated table, click the instance to view the clusters from that instance.
  3. Click the Infrastructure tab and select the cluster where you want to install the HCX service.
  4. Go to the Network interface section on the cluster page.
  5. Collapse the Public VLAN option and collapse the subnet with the description that corresponds to the portable subnet of the particular cluster.
  6. Use the IP address from the Service T0 uplink2 Virtual IP address to route the traffic in the firewall rule. The firewall rule is required to allow all outbound HTTPS traffic so that the HCX Manager virtual appliance (HCX Manager) can register itself.
  7. After the HCX Manager installation is completed, you can remove the firewall rule.

In addition, you must configure firewall rules to allow HCX to function properly. For more information, see Port access requirements for VMware HCX.

Ordering HCX for a new instance

  1. When you order the instance, scroll down to the Add-on services section. HCX is in the Data resiliency and migration category.
  2. Open the category, locate HCX, and toggle its switch on.
  3. Click Edit to review and specify the configuration information, then click Save.

Ordering HCX for an existing instance

  1. On the instance details page, click the Services tab.
  2. Click Add to add the service.
  3. On the Add services page, locate the HCX service in the Data resiliency and migration section and toggle its switch on.
  4. Click Edit to review and specify the configuration information, then click Save.

HCX configuration

To install HCX, complete the following settings:

  1. Select the HCX Service Mesh target cluster, either the management or the workload cluster.
  2. Specify the HCX network connection by selecting one of the following options. If any of the management or service mesh target clusters are deployed with private network only, the only networking option that you can choose is private.
    • Public network - HCX creates an encrypted connection between sites over the public network. License registration and metering are completed over the public network.
    • Private network - HCX creates an encrypted connection between sites over the private network. License registration and metering are completed over a private network through HTTP proxy.
  3. If private network connection is selected, proxy information is displayed. Otherwise, a proxy option is not available. Complete the following fields:
    • Proxy IP address - The IPv4 address of the proxy server.
    • Proxy port number - The proxy server port. The port number is typically 8080 or 3128.
    • Proxy user name (Optional) - The username if proxy authentication is required.
    • Proxy password (Optional) - The password if proxy authentication is required.
    • Reenter proxy password (Optional) - Reenter the password for proxy authentication validation.
  4. Specify the Public endpoint certificate type. If you select CA Certificate, configure the following settings:
    • Certificate contents - Enter the contents of the CA certificate.
    • Private key - Enter the private key of the CA certificate.
    • Password (Optional) - Enter the password for the private key, if it is encrypted.
    • Reenter password (Optional) - Enter the password for the private key again.
    • Hostname (Optional) - The hostname to be mapped to the common name (CN) of the CA certificate. HCX requires that the format of the CA certificate must be accepted by NSX Edge. For more information about NSX Edge certificate formats, see Import an SSL certificate.

Deployment process for HCX

The deployment of HCX is automated. Whether you order a VCF for Classic - Automated instance with the service included or you deploy the service later into your instance, the following steps are completed by the IBM Cloud for VMware Solutions automation process:

The automated deployment process is not supported for BYOL (Bring Your Own License). You must complete the HCX deployment process manually.

  1. Three subnets are ordered for HCX from the IBM Cloud infrastructure:

    • One private portable subnet for HCX management.
    • One private portable subnet for HCX interconnects. This subnet is used when the Private network option is selected for HCX connection type.
    • One public portable subnet for HCX interconnects, if the Public network option is selected for HCX connection type. On NSX-V, this subnet is also used for activation and maintenance with VMware.

    The IP addresses in the subnets that are ordered for HCX are intended to be managed by the VMware Solutions automation. These IP addresses cannot be assigned to VMware resources (such as VMs and NSX Edges) that are created by you. If you need more IP addresses for your VMware artifacts, you must order your own subnets from IBM Cloud.

  2. If Private Network was selected for HCX Network Connection, a port group that is named SDDC-DPortGroup-HCX-Private is created on the private Distributed Virtual Switch (DVS).

  3. An HCX activation key is ordered from VMware.

  4. For VCF for Classic - Automated with NSX-T instances, the firewall rules and network address translation (NAT) rules are configured to allow inbound and outbound HTTPS traffic to and from the HCX Manager.

  5. For VCF for Classic - Automated with NSX-V instances, a pair of NSX Edge Services Gateways (ESGs) for the HCX management traffic is deployed and configured:

    • Public and private uplink interfaces are configured by using the ordered subnets.
    • The ESGs are configured as a pair of extra large edge appliances with High Availability (HA) enabled.
    • The firewall rules and network address translation (NAT) rules are configured to allow inbound and outbound HTTPS traffic to and from the HCX Manager.
    • The load balancer rules and resource pools are configured. These rules and resource pools are used to forward HCX-related inbound traffic to the appropriate virtual appliances of HCX Manager and vCenter Server (with embedded Platform Services Controller).
    • An SSL certificate to encrypt the HCX-related inbound HTTPS traffic that is coming through the ESGs is applied.

    The HCX management edge is dedicated to the HCX management traffic between the on-premises HCX components and the cloud-side HCX components. Do not modify the HCX management edge or use it for HCX network extensions. Instead, create separate edges for network extensions. In addition, if you use a firewall or you disable the HCX management edge communications to the private IBM management components or the internet, the HCX functions might be impacted.

  6. The HCX Manager is deployed, activated, and configured:

    • The HCX Manager is registered with vCenter Server.
    • The HCX Manager, vCenter Server (with embedded Platform Services Controller), and NSX Manager are configured.
    • The HCX Compute and Network profiles are created.

  7. The hostname and IP address of the HCX Manager is registered with the DNS server of vCenter Server.