IHostedService Under Load Balancer?

# IHostedService Under Load Balancer

I read below line
"you can even make sure that it runs a single instance of that microservice process/container." but its confusing

I have multiple container and instance of my service under load balancer.

will this background job run in all instance or one among them??

if no how multiple instance inform that background process already started.

[edited by gewarren to add document details]

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#### Document Details

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* ID: d49a03c0-a844-26eb-48a5-33a612dd3ead
* Version Independent ID: 0707865f-9db7-0d71-42a5-bc1a1e89680a
* Content: [Implement background tasks in microservices with IHostedService and the BackgroundService class](https://docs.microsoft.com/en-us/dotnet/architecture/microservices/multi-container-microservice-net-applications/background-tasks-with-ihostedservice)
* Content Source: [docs/architecture/microservices/multi-container-microservice-net-applications/background-tasks-with-ihostedservice.md](https://github.com/dotnet/docs/blob/master/docs/architecture/microservices/multi-container-microservice-net-applications/background-tasks-with-ihostedservice.md)
* Product: **dotnet-architecture**
* Technology: **microservices**
* GitHub Login: @nishanil
* Microsoft Alias: **nanil**