Get host ID using API

[gary1024]

Hi

I need help to find a way to get hostid using an API. I know hostid can be found on the URL like this:

https://my-domain/e/my-environment/#newhosts/hostdetails;id=HOST-B0363C0D000000000;gtf=-72h%20to%20now;gf=all

However, I need to have a way to query from the OneAgent host itself so that I can use it to trigger enable/disable API from there.

Gary

[pahofmann · Accepted solution]

You can use the Monitored Entities Endpoint in the Environment v2 API to get the Host IDs

[dannemca]

The Hosts API will also do the job.

[gary1024]

Thanks for the reply. Sorry for not being specific.

A list of HOSTID and other parameters will not help.

My use case is that I need to configure my AWS instance to query the HOSTID of the instance in Dynatrace (by its Instance-ID or detected name) and store it in a variable to be use in the OneAgent enable/disable API.

[theharithsa]

Hi @gary1024 

You can do this using OneAgent on a host API, 

• First you need to use, /oneagents API to get the host id (Environment API)
• Second, you need to use /hosts/{id}/monitoring API to update the monitoringEnabled parameter. (Configuration API)
  

  • {
      "monitoringEnabled": true,
      "monitoringMode": "FULL_STACK"
    }

[Fin_Ubels]

Hey NKIANKEONG,
Instead of the APIs you could also use the oneagentctl tool to get the HostID of specific hosts. It's bundled with OneAgent when you install it so it will be on every host. So you could set up some system to remotely trigger it to run and then get the response from it.
https://www.dynatrace.com/support/help/shortlink/oneagentctl#host-id

[gary1024 · Accepted solution]

Thanks to everyone that contribute to this. Problem solved!

This is the solution:

environment-api/entity-v2/get-entities-list

And this simple API will get me the HOSTID I need:

https://{my-domain}/e/{my-environment}/api/v2/entities?Api-Token={my-token}&entitySelector=type(%22HOST%22),entityName(%22{my-detected-name}%22) 

The result:

totalCount: 1
pageSize: 50
entities:
      0:
              entityId: "HOST-xxxxxxxxxxxxxxx"
              displayName: "MicroServices - ip-xx-xxx-xx-xx.aws.men.maxis.com.my"

[v_mayordomo]

Hi. I see that this thread is already closed, but in case someone is useful, it is a good idea to filter only for those hosts that are being monitored (we discard all ESXi discovered in vCenter) and by the way, not return only 50 results and can specify the number we want. This is the call to return the ID of each server, (necessary to use the API) only if it is in “FULL-STACK” and returning 100 results.

url = 'https://{environmentid}.live.dynatrace.com/api/v2/entities?entitySelector=type%28%22HOST%22%29,monitoringMode(%22FULL_STACK%22)&pageSize=100'

In our case we use it to enable or disable by API the monitoring of HOSTs through a python script.
Greetings.

[vzd68890]

It is so complicated to find so simple information . It is not user friendly .