Telemetry Will Not Be Started If api.server Is Disabled

[tkxkd0159]

Summary of Bug

• server/start.go
• server/api/server.go

The initialization of telemetry is implemented in function start() in the file server/api/server.go.

  if cfg.Telemetry.Enabled {
      m, err := telemetry.New(cfg.Telemetry)
      if err != nil {
          s.mtx.Unlock()
          return err
      }

      s.metrics = m
      s.registerMetrics()
  }

During the execution of function startInProcess(), if telemetry is enabled in the configuration and the API server is disabled, telemetry will not be started correctly because the function start() in file server/api/server.go will not be invoked.

In addition, the function startStandAlone() also will not start the telemetry correctly if the telemetry is enabled in the configuration.

Failing to start telemetry will make the node miss crucial on-chain metrics and increase the difficulty of future optimization.

Version

e19f863

Steps to Reproduce

---

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned