log record example

Author: estroz

doc/dev/logging.md

@@ -83,6 +83,12 @@ func (r *ReconcileMemcached) Reconcile(request reconcile.Request) (reconcile.Res
 }
 ```
 
+Log records will look like the following (from `reqLogger.Error()` above):
+
+```
+2018-11-08T00:00:25.700Z	ERROR	operator-sdk.controller_memcached pkg/controller/memcached/memcached_controller.go:118	failed to create new Deployment	{"Request.Namespace", "memcached", "Request.Name", "memcached-operator", "Deployment.Namespace", "memcached", "Deployment.Name", "memcached-operator"}
+```
+
 ## Non-default logging
 
 If you do not want to use `logr` as your logging tool, you can remove `logr`-specific statements without issue from your operator's code, including the `logr` [setup code][code_set_logger] in `cmd/manager/main.go`, and add your own. Note that removing `logr` setup code will prevent `controller-runtime` from logging.