[NODE] Node crashes on startup when AuditLogger is enabled

[huangyisan]

Description
When I enable the AuditLogger feature in the config ([AuditLogger] Enabled = true), the node crashes immediately on startup with this error:

fatal error instantiating application: failed to register health check for service *audit.AuditLoggerService: misconfigured check "" for *audit.AuditLoggerService

It crashes right away, before the node even tries to connect to anything. It doesn't matter what ForwardToUrl is set to — I tested with both a working URL and a broken one, same crash either way. Turning off AuditLogger (or setting Enabled = false) lets the node start normally.

Basic Information

• Network: N/A — the node never gets far enough to connect to a chain, it crashes during startup
• Blockchain Client: N/A
• Go Version: 1.26.5 (from the build logs)
• Operating System: Ubuntu 24.04, running inside Docker
• Commit: version=2.61.0@unset
• Hosting Provider: self-hosted
• Startup Command: chainlink -c config.toml -s secrets.toml node start, also reproduced via docker run smartcontract/chainlink:2.61.0 node -c config.toml -s secrets.toml start

Environment Variables
Not using environment variables to configure the node — using config.toml / secrets.toml files instead.

Steps to Reproduce

1. Add this to config.toml:

   [AuditLogger]
   Enabled = true
   ForwardToUrl = 'http://any-endpoint:9898/audit'

2. Start the node normally.
3. It crashes immediately with the error above.

Additional Information
While digging into it, it looks like the code that sets up the AuditLogger service passes it a logger object that was never given a name. When the node tries to register this service for health checks, it requires every service to have a name, and rejects it because the name is empty — which crashes the whole startup.

So basically, just turning this feature on (regardless of any other config) makes the node unable to start at all.