Configuring DNS/DHCP Server services using cloud-init - BlueCat Integrity

You can use cloud-init to easily configure multiple DNS/DHCP Server services on your VM by creating a local ISO image that contains the set of server services and mounting the ISO to an installed DNS/DHCP Server VM.

Note: Merge operations cannot be performed on a /31 network if a DHCP range is present on the network.

To configure server services using cloud-init

Create a file that contains the cloud-init configuration information for the DNS/DHCP Server services that you would like to configure. For more information on configuring additional server services, refer to Reference: DNS/DHCP Server service configuration examples.

The following contains an example of the contents of a file called user-data:

#cloud-config
bluecat_service_config:
    payload: |
        {
          "version": "1.0.0",
          "services": {
              "firewall": {
                  "configurations": [
                      {
                          "firewallConfiguration": {
                              "enable": true,
                              "allowPing": false
                          }
                      }
                  ]
              },
              "ssh": {
                  "configurations": [
                      {
                          "sshConfiguration": {
                              "enable": true,
                              "tacacs": {
                                  "enable": false
                              }
                          }
                      }
                  ]
              },
              "ntp": {
                  "configurations": [
                      {
                          "ntpConfiguration": {
                              "enable": true,
                              "servers": [
                                  {
                                      "address": "192.168.47.10",
                                      "stratum": "default"
                                  },
                                  {
                                      "address": "127.127.0.10",
                                      "stratum": "1"
                                  }
                              ]
                          }
                      }
                  ]
              }
        }

Create a metadata configuration file containing dsmode information.
The following contains an example of the contents of a file called meta-data:
```
dsmode: local
```
From the command line of a Linux machine, generate the ISO file that will contain the DNS/DHCP Server service configuration information using the following command:
```
genisoimage -output service-config.iso -volid cidata -joliet -rock user-data meta-data
```
Where user-data is the name of the server service configuration file and meta-data is the name of the metadata configuration file.
Log in to the VMware vSphere.
Navigate to the location of the DNS/DHCP Server VM to be configured with the server service configuration.
Edit the virtual machine settings so that its virtual CD/DVD device is configured to use the ISO image (instead of the physical CD/DVD drive).
1. Select the tab for the virtual machine you just created.
2. Click Edit virtual machine settings.
3. On the Hardware tab, select CD/DVD drive. On the right side:
  1. Select Connect at power on.
  2. Select Use ISO image file.
  3. Click Browse and navigate to your saved ISO image file.
If your virtual machine is currently powered on, reboot the machine. Otherwise, power on the virtual machine.
The virtual machine boots from the ISO image and cloud-init configures the selected DNS/DHCP Server services.

Configuring DNS/DHCP Server services using cloud-init - BlueCat Integrity - 9.6.0

VM Installation Guide