Identifying if the Frontdoor service has stopped
There are two ways to identify if the Frontdoor service has stopped running.
1 Admin Section
If you are an Admin on the NRDAv2 application you will be able to navigate to the Admin section at the top of the page.
From the Admin section select the System Monitoring option form the menu
on the left hand side of the screen.
System Monitoring
The system monitoring page shows a list of systems being used by the application and their current health.
If there are multiple Frontdoor services connected to the application then there will multiple rows showing each Frontdoor and their health.
If any of the Frontdoor services are showing Down then you can follow the next section on restarting the Frontdoor.
2 Frontdoor Queue Length
An alternative way of identifying if the Frontdoor has stopped is by navigating to any Dataset and going to the Ingest Rules page.
At the bottom of the page below any Ingest Rules there is a section called "Latest queue length for front door messages".
Below are a few examples for what to look out for when the Frontdoor is Down.
This shows an example of a Frontdoor with no messages
waiting to be consumed. This means that the Frontdoor is
functioning correctly and nothing needs to be done.
This is an example of a Frontdoor with messages waiting to be consumed.
If the numbers shown in the queues do not change for a period of time then
the Frontdoor will need to be restarted.