Enable access logs globally on all sites using Caddyfile

francislavoie · December 9, 2021, 1:58am

Alright, so a config like this does work:

{
	log {
		format json
		output stderr
	}
}

http://localhost:8080 {
	log
	respond "Hello, caddy log test world!"
}

The key is you need to at least enable log in each site so that shouldLogRequest is true:

github.com

caddyserver/caddy/blob/e90d7517322b8092f3bdad832565a4213cab5a1a/modules/caddyhttp/server.go#L169

    
      
          	// modified during handling
          	shouldLogCredentials := s.Logs != nil && s.Logs.ShouldLogCredentials
          	loggableReq := zap.Object("request", LoggableHTTPRequest{
          		Request:              r,
          		ShouldLogCredentials: shouldLogCredentials,
          	})
          	errLog := s.errorLogger.With(loggableReq)
          
          
	var duration time.Duration
          
          
	if s.shouldLogRequest(r) {
          		wrec := NewResponseRecorder(w, nil, nil)
          		w = wrec
          
          
		// capture the original version of the request
          		accLog := s.accessLogger.With(loggableReq)
          
          
		defer func() {
          			repl.Set("http.response.status", wrec.Status())
          			repl.Set("http.response.size", wrec.Size())
          			repl.Set("http.response.duration", duration)

Doing so, it’ll use the default logger instead of configuring a per-site logger, so you can use the global options to configure all of them at once.