Health Scenarios
About
Health scenarios in TR7 GTM can be used to determine which address the DNS records will return or from which data center they will be served based on predefined conditions (scenarios). By utilizing health checks, TR7 GTM allows the creation of appropriate health scenarios, enabling disaster recovery and ensuring redundancy and business continuity for your services and data centers.
How to Add?
To add a new Health Scenario, follow the steps in the TR7 ASP web interface: Global Traffic Manager (GTM) > Settings > Health Scenarios > Add. On the opened screen, a new Health Scenario can be defined.
Interface
Health Scenarios Listing Screen
By following the steps "Global Traffic Manager (GTM) > Settings > Health Scenarios", you can access the list of all Health Scenarios registered on the TR7 ASP device. This screen allows adding, editing, and deleting Health Scenarios.
- 1 (Information to be Displayed in the Table)
Allows selecting which information should be displayed in the Health Scenarios list table.
Available and default-selected fields:
- Status
- Scenario Name
- State
- Trigger Settings
- Log
- 2 (Add)
Click the Add button to open the form for adding a new Health Scenario.
- 3 (Edit)
Click the Edit button to open the edit screen for the selected Health Scenario.
- 4 (Delete)
Select one or more Health Scenarios and click the Delete button to remove them from the TR7 ASP device.
- 5 (Search)
Used to search all expressions in the table.
- 6 (RegExp Search)
Used to search all expressions in the table using regular expressions.
- 7 (Column Based Search)
Used to search all expressions column-based.
- 8 (Page Information)
Displays the total number of Express profiles and how many are listed on the current page.
- 9 (Page Size)
Allows selecting the maximum number of Health Scenarios displayed per page. Arrows can be used to navigate between pages.
- 10 (Information to be Displayed in the Automatic Health Scenarios Table)
Allows selecting which information should be displayed in the automatically created Health Scenarios table in TR7 GTM.
Available and default-selected fields:
- Status
- Scenario Name
- State
- Trigger Settings
- Log
- 17 (Automatic Health Scenarios)
The default Automatic Health Scenarios are:
- Always: This scenario is always active in all conditions. If assigned to a DNS record, the failover scenario will always be triggered.
- Never: This scenario is never active under any condition. If assigned to a DNS record, the failover scenario will never be triggered.
- Preview of Selected Health Scenario
After navigating to "Global Traffic Manager (GTM) > Settings > Health Scenarios", clicking on any Health Scenario will open a panel on the right displaying its details.
This panel provides access to information about the selected Health Scenario.
Interface
Health Scenario Addition Form
Follow "Global Traffic Manager (GTM) > Settings > Health Scenarios > Add" to add a new Health Scenario to the TR7 ASP device.
- Scenario Name
Enter the name of the Health Scenario.
- Health Check
Select the health check(s) for this scenario. Based on the selected health checks, the created health scenario will determine whether a service or data center is considered healthy. For detailed information on Health Check, click here.
- Activation
Select whether the Health Scenario will activate automatically or with a trigger.
When "Automatic" is selected, the scenario activates automatically based on health check results. Once the activation check turns green, the activation action is triggered automatically.
Selecting "With Trigger" ensures the scenario is triggered based on health check results. The trigger action can involve sending an Oracle command or making an HTTP/HTTPS request with headers, body, or queries. An "Activation Check" verifies the outcome of this trigger action.
- Deactivation
Select how the Health Scenario will deactivate if conditions normalize.
When "Automatic" is selected, the scenario deactivates automatically once conditions return to normal.
Selecting "Off" means deactivation will never occur.
- Add
Click the Add button to add the Health Scenario.