Logging

Logging and tracing in Elastic is done on the client-level. A log file in Elastic captures requests (e.g. URL, status code, duration) as well as events like marking dead connections or updating nodes after sniffing.

This logs to standard output:

client.SetLogger(log.New(os.Stdout, "ELASTIC ", log.LstdFlags))

If you want to log to a file, use something like this:

file, err := os.OpenFile("elastic.log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0664)
if err != nil {
  panic(err)
}
client.SetLogger(log.New(file, "ELASTIC ", log.LstdFlags))