Manual Chapter : Managing GSLB Topology Records

Applies To:

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BIG-IQ Centralized Management

  • 7.1.0
Manual Chapter

Managing GSLB Topology Records

How do I manage permissions for DNS GSLB objects?

F5 BIG-IQ Centralized Management makes it straightforward for you to manage permissions that allow users to view only the specific DNS GSLB objects you assign to them.
To provide permissions for a specific set of objects, you complete these tasks.
  1. Add a custom resource group
    - In this task, you specify the GSLB objects that you want this user to work with. You create a resource group for each collection of objects that you want to assign to a user.
  2. Add a custom role
    - Next, you associate the GSLB Viewer role type with the resource groups that contain the objects you want your delegates to view. For example, if you had a resource group made up of two wide IPs, one named
    SeattlePrime
    and the other named
    SeattleSecond
    , you might name this role
    viewSeattle
    .
  3. Add a custom user
    - Finally, you create a user and assign a custom role to that user. The role gives that user permissions to view the objects that belong to the objects in the resource group. In the current example, you could assign your custom user to the
    viewSeattle
    role to give that user the ability to view the GSLB objects in the two Seattle wide IPs.
For step-by-step guidance on each of these tasks, refer to
How do I give users customized permissions to specific BIG-IP resources based on their job responsibilities?
on
support.f5.com
.

How do I manage GSLB topology records in BIG-IQ?

Topology regions define a specific geographical location that has meaning for your network. These regions are especially useful in conjunction with topology records to improve the efficiency of your load balancing.
The workflows are very similar for creating a new GSLB topology record or for changing the settings for a GSLB topology record that already resides on devices in a managed sync group. In each case, there are four tasks to perform.
This figure illustrates the workflow to manage the topology records in a sync group. Changing the settings or creating the topology record is the second step in this process.
Change GSLB topology record workflow
Workflow for changing object settings on a managed device
You can view the GSLB topology records configured for the DNS sync groups you manage by navigating to
Configuration
DNS
GSLB
Topology Records
. From there, click a record to edit it, or click
Create
to set up a new one.

View GSLB objects

Before you can use a BIG-IQ to manage DNS GSLB objects on a managed device, you must configure at least one Datacenter on that device using the BIG-IP user interface.
Before you can view GSLB objects, you must discover and import BIG-IP devices that are members of a DNS sync group that has GSLB objects.
When you use F5 BIG-IQ Centralized Management to manage your DNS sync group, you can view the GSLB objects that are defined on devices in the sync group.
  1. At the top of the screen, click
    Configuration
    .
  2. On the left, click
    DNS
    GSLB
    , and then select the object type that you want to view.
    The screen displays a list of the selected object type that are defined on devices managed by this BIG-IQ system. For each object (except iRules, topology records, or topology regions), icons describe the health status and availability.
  3. To view overview information about a particular object, select the check box for that object.
    An overview panel and a related items panel display for this object.
  4. To see a list of related items for a GSLB object:
    1. Select the check box for that object.
    2. In the Related Items panel, click
      Show
      .
      You can view the list of related items; and, for many of the items, you can click a link to view properties for that item.
  5. To view the general properties for a GSLB object, click the name of that object.
    The screen displays the properties for the selected object.

Create a GSLB topology record

You create a GSLB topology record to define a set of characteristics that maps the origin of a DNS name resolution request to a destination.
  1. At the top of the screen, click
    Configuration
    , then, on the left, click
    DNS
    GSLB
    Topology Records
    .
    The screen displays a list of topology records defined on this device.
  2. Click
    Create
    .
    The New Topology Record screen opens.
  3. Select a
    Sync Group
    for the topology record.
  4. Specify the
    LDNS Request Source
    for incoming DNS requests.
    The options for the
    Request Source
    and
    Destination
    matching methods are dynamic, and change based on how you have configured the system
    1. Select an origination type and provide the applicable information.
    2. For
      Is/Is Not:
      , specify whether you want the system to select this topology record, either when the request source matches (
      is
      ), or when it does not match (
      is not
      ).
  5. Specify the
    Destination
    to which the system directs the incoming DNS request.
    1. Select an destination type and provide the applicable information.
    2. For
      Is/Is Not:
      , specify whether you want the system to select this topology record, either when the destination matches (
      is
      ), or when it does not match (
      is not
      ).
  6. Specify the
    Weight
    of the topology record.
    The system finds the weight of the first topology record that matches the server object (pool or pool member) and the local DNS.
  7. Click
    Save & Close
    .
    The system creates the new topology record and adds it to the list of topology records.
Changes that you make are made only to the pending version. The
pending version
serves as a repository for changes you stage before deploying them to the managed device. Object settings for the pending version are not the same as the object settings on the actual BIG-IP device until they are deployed or discarded.
When you finish specifying the settings for this topology record, you need to evaluate and then deploy the changes to devices in the sync group. Until you deploy the changes stored in the pending version, objects on the devices in the sync group are not changed.

Edit a GSLB topology record

You can view and modify the properties for existing GSLB topology records. Since you are working with an existing topology record, you can modify only the
Weight
setting.
  1. At the top of the screen, click
    Configuration
    , then, on the left, click
    DNS
    GSLB
    Topology Records
    .
    The screen displays a list of topology records defined on this device.
  2. Click the name of the topology record you want to edit.
    Unless noted here, the parameters on this screen perform the same function as they do when you configure a topology record on a BIG-IP device. For details about the purpose or function of a particular setting, refer to the BIG-IP system reference information on
    support.f5.com
    .
    The screen displays the current settings for the selected topology record.
  3. Revise the
    Weight
    settings that you want to revise and then, when your edits are complete, click
    Save & Close
    .
Changes that you make are made only to the pending version. The
pending version
serves as a repository for changes you stage before deploying them to the managed device. Object settings for the pending version are not the same as the object settings on the actual BIG-IP device until they are deployed or discarded.
When you finish revising the settings for this topology record, you need to evaluate and then deploy the changes to devices in the sync group. Until you deploy the changes stored in the pending version, objects on the devices in the sync group are not changed.