Red Hat OpenStack Administration I: Core Operations for Domain Operators

Procedure 4.2. Instructions

This guided exercise is in two parts. In part 1 you use the CLI to create a tenant network and subnet, and in part 2 you use the Dashboard to review that network and create another tenant network.

1. Create a network named finance-network4 using the developer1 credentials in the CLI.

   1. On workstation, source the /home/student/developer1-finance-rc user environment file.

      [student@workstation ~]$ source ~/developer1-finance-rc
      [student@workstation ~(developer1-finance)]$

   2. Create a network named finance-network4.

      [student@workstation ~(developer1-finance)]$ openstack network create \
      > finance-network4
      ...output omitted...

   3. Use the openstack network show command with the --max-width option to view the network.

      [student@workstation ~(developer1-finance)]$ openstack network show \
      > finance-network4 --max-width 80
      +---------------------------+--------------------------------------------------+
      | Field                     | Value                                            |
      +---------------------------+--------------------------------------------------+
      | admin_state_up            | UP                                               |
      | availability_zone_hints   |                                                  |
      | availability_zones        |                                                  |
      | created_at                | 2020-05-13T06:51:04Z                             |
      | description               |                                                  |
      | dns_domain                |                                                  |
      | id                        | 8319ffce-05b3-4f8d-a273-30f07e052b45             |
      | ipv4_address_scope        | None                                             |
      | ipv6_address_scope        | None                                             |
      | is_default                | None                                             |
      | is_vlan_transparent       | None                                             |
      | location                  | cloud='', project.domain_id=,                    |
      |                           | project.domain_name='Example',                   |
      |                           | project.id='4a08af8fda6a4609ad293613e0e637e3',   |
      |                           | project.name='finance', region_name='regionOne', |
      |                           | zone=                                            |
      | mtu                       | 1442                                             |
      | name                      | finance-network4                                 |
      | port_security_enabled     | True                                             |
      | project_id                | 4a08af8fda6a4609ad293613e0e637e3                 |
      | provider:network_type     | None                                             |
      | provider:physical_network | None                                             |
      | provider:segmentation_id  | None                                             |
      | qos_policy_id             | None                                             |
      | revision_number           | 1                                                |
      | router:external           | Internal                                         |
      | segments                  | None                                             |
      | shared                    | False                                            |
      | status                    | ACTIVE                                           |
      | subnets                   |                                                  |
      | tags                      |                                                  |
      | updated_at                | 2020-05-13T06:51:04Z                             |
      +---------------------------+--------------------------------------------------+

2. Create a subnet named finance-subnet4 within the finance-network4 network. Configure this subnet to use the 192.168.4.0/24 range. Verify the settings of the subnet.

   1. Create a subnet named finance-subnet4 in the finance-network4 network. Configure this subnet to use the 192.168.4.0/24 range.

      [student@workstation ~(developer1-finance)]$ openstack subnet create \
      > --subnet-range 192.168.4.0/24 \
      > --network finance-network4 \
      > finance-subnet4
      ...output omitted...

   2. Use the openstack subnet show command to show finance-subnet4. Use the openstack subnet show --max-width command to show finance-subnet4.

      Note that if no allocation pools are configured when creating the subnet, OpenStack automatically assigns the full range, with the exception of the gateway and broadcast addresses.

      [student@workstation ~(developer1-finance)]$ openstack subnet show \
      > finance-subnet4 --max-width 80
      +-------------------+----------------------------------------------------------+
      | Field             | Value                                                    |
      +-------------------+----------------------------------------------------------+
      | allocation_pools  | 192.168.4.2-192.168.4.254                                |
      | cidr              | 192.168.4.0/24                                           |
      | created_at        | 2020-05-13T06:56:53Z                                     |
      | description       |                                                          |
      | dns_nameservers   |                                                          |
      | enable_dhcp       | True                                                     |
      | gateway_ip        | 192.168.4.1                                              |
      | host_routes       |                                                          |
      | id                | 1eb9862f-ea49-46dd-934e-07da577c1008                     |
      | ip_version        | 4                                                        |
      | ipv6_address_mode | None                                                     |
      | ipv6_ra_mode      | None                                                     |
      | location          | cloud='', project.domain_id=,                            |
      |                   | project.domain_name='Example',                           |
      |                   | project.id='4a08af8fda6a4609ad293613e0e637e3',           |
      |                   | project.name='finance', region_name='regionOne', zone=   |
      | name              | finance-subnet4                                          |
      | network_id        | 8319ffce-05b3-4f8d-a273-30f07e052b45                     |
      | prefix_length     | None                                                     |
      | project_id        | 4a08af8fda6a4609ad293613e0e637e3                         |
      | revision_number   | 0                                                        |
      | segment_id        | None                                                     |
      | service_types     |                                                          |
      | subnetpool_id     | None                                                     |
      | tags              |                                                          |
      | updated_at        | 2020-05-13T06:56:53Z                                     |
      +-------------------+----------------------------------------------------------+

      Note

      Use the Dashboard to perform the following steps.

3. As the developer1 user, create a network named finance-network2 and a subnet named finance-subnet2 with the 192.168.2.0/24 network address. Log out of the Dashboard when you have finished creating the network and subnet.

   1. Log in to the Dashboard at http://dashboard.overcloud.example.com using Example as the domain, developer1 as the user name, and redhat as the password. Confirm that the selected project is finance.

   2. Navigate to Project → Network → Networks and then click Create Network.

   3. In the Network section, enter finance-network2 in the Network Name field. Select Create Subnet and then click Next.

   4. In the Subnet section, enter finance-subnet2 in the Subnet Name field. Enter 192.168.2.0/24 in the Network Address field and then click Next.

   5. In the Subnet Details section, review the default settings, and then click Create.

4. Locate finance-subnet4 and edit the subnet by removing DHCP.

   1. Navigate to Project → Network → Networks and locate finance-network4. Click finance-network4.

   2. Click Subnets and then click Edit Subnet. Click Next, clear the Enable DHCP check box, and then click Save.

   3. Log out of the Dashboard.