How to failover to an off...
Dynu's System Monitoring & DNS Failover service helps you monitor critical services
from multiple geographic locations and automatically respond when downtime is detected.
One powerful failover action is enabling Offline Settings for a domain
when a monitor goes down — allowing you to display a custom offline message or
redirect visitors to a fallback URL until your service is restored.
A failover action is an automated response that Dynu performs when a monitor's state changes. For example, when a monitor transitions to Down, you can configure an action to automatically enable the Offline Settings for your domain — informing visitors that your site is temporarily unavailable. When the monitor recovers and transitions back to Up, a second action can automatically disable the offline settings and restore normal DNS resolution.
Offline Settings support two options:
To configure a failover action that enables Offline Settings when a monitor goes down, follow these steps.
Step 1
Log into the control panel, go to
DNS Failover
and click on
Monitors.
Select the monitor you want to configure failover actions for by clicking on its name.
In the Manage Monitor page, click the Actions button to manage failover actions for this monitor.
Step 2 — Add a "Down" action to enable Offline Settings
Click the + Add button to add a new failover action. Configure the following fields:
State Select Down. This action will trigger when the monitor detects that your service is unavailable.
Action Type Select Enable Offline Settings. This will activate the Offline Settings configured for your domain when the monitor goes down.
Domain Name Select the domain name you want the offline settings to apply to (e.g., dynu.biz).
The Offline Action and Offline Message fields shown below the form reflect the offline settings currently configured for the selected domain. For example:
Click + Add to save this action.
Step 3 — Add an "Up" action to disable Offline Settings
Click the + Add button again to add a second failover action for when your service recovers. Configure the following fields:
State Select Up. This action will trigger when the monitor detects that your service has recovered.
Action Type Select Disable Offline Settings. This will deactivate the Offline Settings for your domain, restoring normal DNS resolution automatically.
Domain Name Select the same domain name used in Step 2 (e.g., dynu.biz).
Click + Add to save this action.
Step 4 — Verify your configuration
Once both actions are saved, your monitor will:
You can review all configured actions and their logs by clicking the Action Log button on the Manage Monitor page.
What is a Failover Action?
A failover action is an automated response that Dynu performs when a monitor's state changes. For example, when a monitor transitions to Down, you can configure an action to automatically enable the Offline Settings for your domain — informing visitors that your site is temporarily unavailable. When the monitor recovers and transitions back to Up, a second action can automatically disable the offline settings and restore normal DNS resolution.
Offline Settings support two options:
- Display an offline message — Show a custom message to visitors, such as "Sorry, my website is not available at the moment. Please visit my website some other time."
- Point to a URL — Redirect visitors to a fallback URL, such as a status page or a mirror site, while your primary server is down.
How to configure a Failover Action for Offline Settings?
To configure a failover action that enables Offline Settings when a monitor goes down, follow these steps.
Step 1
Log into the control panel, go to
DNS Failover
and click on
Monitors.
Select the monitor you want to configure failover actions for by clicking on its name.
In the Manage Monitor page, click the Actions button to manage failover actions for this monitor.
Step 2 — Add a "Down" action to enable Offline Settings
Click the + Add button to add a new failover action. Configure the following fields:
State Select Down. This action will trigger when the monitor detects that your service is unavailable.
Action Type Select Enable Offline Settings. This will activate the Offline Settings configured for your domain when the monitor goes down.
Domain Name Select the domain name you want the offline settings to apply to (e.g., dynu.biz).
The Offline Action and Offline Message fields shown below the form reflect the offline settings currently configured for the selected domain. For example:
- Offline Action: Display offline message
- Offline Message: Sorry, my website is not available at the moment. Please visit my website some other time.
Click + Add to save this action.
Step 3 — Add an "Up" action to disable Offline Settings
Click the + Add button again to add a second failover action for when your service recovers. Configure the following fields:
State Select Up. This action will trigger when the monitor detects that your service has recovered.
Action Type Select Disable Offline Settings. This will deactivate the Offline Settings for your domain, restoring normal DNS resolution automatically.
Domain Name Select the same domain name used in Step 2 (e.g., dynu.biz).
Click + Add to save this action.
Step 4 — Verify your configuration
Once both actions are saved, your monitor will:
- Automatically enable Offline Settings for your domain when the monitor goes Down, notifying visitors that the service is unavailable.
- Automatically disable Offline Settings when the monitor comes back Up, restoring normal access for your visitors.
You can review all configured actions and their logs by clicking the Action Log button on the Manage Monitor page.