Java Agent 3.6.2 not authenticating correctly using managed identity (agent 3.6.1 works great on the same setup) #3981
Description
Expected behavior
App Insights with local authentication disabled - Java Agent 3.6.2 should authenticate using managed identity
Actual behavior
App Insights with local authentication disabled - Java Agent 3.6.2 is failing to authenticate using managed identity.
To Reproduce
On an Ubuntu Linux Azure VM with the System Assigned managed identity enabled
export APPLICATIONINSIGHTS_CONNECTION_STRING='InstrumentationKey=REDACTED;IngestionEndpoint=https://eastus2-3.in.applicationinsights.azure.com/;LiveEndpoint=https://eastus2.livediagnostics.monitor.azure.com/;ApplicationId=REDACTED'
export APPLICATIONINSIGHTS_AUTHENTICATION_STRING=Authorization=AAD
java -javaagent:"applicationinsights-agent-3.6.2.jar" -jar /path/to/jar
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System information
Please provide the following information:
- SDK Version: Java Agent 3.6.2
- OS type and version: Ubuntu 24.04.1 LTS
- Application Server type and version (if applicable):
- Using spring-boot? No
- Additional relevant libraries (with version, if applicable):
Logs
Turn on SDK logs and attach/paste them to the issue. If using an application server, also attach any relevant server logs.
Log output from Agent 3.6.2 - which is not working
2024-12-13 04:06:10.205Z DEBUG c.m.a.m.AcquireTokenByManagedIdentitySupplier - [Managed Identity] Managed Identity source and ID type identified and set successfully, request will use Managed Identity for IMDS
2024-12-13 04:06:10.453Z INFO com.microsoft.aad.msal4j.HttpHelper - [Correlation ID: null] Sent (null) Correlation Id is not same as received (null).
2024-12-13 04:06:10.510Z ERROR c.a.i.ManagedIdentityCredential - Azure Identity => ERROR in getToken() call for scopes [https://monitor.azure.com//.default]: Managed Identity authentication is not available.
2024-12-13 04:06:10.527Z ERROR c.a.c.i.AccessTokenCache - {"az.sdk.message":"Failed to acquire a new access token.","exception":"Managed Identity authentication is not available."}
Log output from Agent 3.6.1 - which is working great on the same setup:
2024-12-13 03:57:05.862Z INFO c.a.i.ManagedIdentityCredential - Azure Identity => Managed Identity environment: AZURE VM IMDS ENDPOINT
2024-12-13 03:57:05.862Z DEBUG c.a.i.ManagedIdentityCredential - Azure Identity => getToken() result for scopes [https://monitor.azure.com//.default]: SUCCESS
2024-12-13 03:57:05.868Z DEBUG c.m.a.m.ConfidentialClientApplication - [Correlation ID: xxxxx] Access Token was returned
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Screenshots
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