To send your go logs to Datadog, we recommend logging to a file and then tailing that file with your Datadog Agent. To achieve that we suggest the following setup with the open source logging library called logrus
We strongly encourage setting up your logging library to produce your logs in JSON format to avoid the need for custom parsing rules.
For a classic Go configuration, open a main.go file and paste the following code:
package main
import (
log "github.com/Sirupsen/logrus"
)
func main() {
// use JSONFormatter
log.SetFormatter(&log.JSONFormatter{})
// log an event as usual with logrus
log.WithFields(log.Fields{"string": "foo", "int": 1, "float": 1.1 }).Info("My first event from golang to stdout")
}It’s very easy to add metas to any log if you provide a JSON object that you want to see in the log event.
These metas can be hostname, username, customers, metric or any information that help you troubleshoot and understand what happens in your Go application.
package main
import (
log "github.com/Sirupsen/logrus"
)
func main() {
// use JSONFormatter
log.SetFormatter(&log.JSONFormatter{})
// log an event as usual with logrus
log.WithFields(log.Fields{"string": "foo", "int": 1, "float": 1.1 }).Info("My first event from golang to stdout")
// For metadata, a common pattern is to re-use fields between logging statements by re-using
contextualizedLog := log.WithFields(log.Fields{
"hostname": "staging-1",
"appname": "foo-app",
"session": "1ce3f6v"
})
contextualizedLog.Info("Simple event with global metadata")
}Create a go.d/conf.yaml file in your conf.d/ folder with the following content:
##Log section
logs:
# - type : (mandatory) type of log input source (tcp / udp / file)
# port / path : (mandatory) Set port if type is tcp or udp. Set path if type is file
# service : (mandatory) name of the service owning the log
# source : (mandatory) attribute that defines which integration is sending the logs
# sourcecategory : (optional) Multiple value attribute. Can be used to refine the source attribute
# tags: (optional) add tags to each logs collected
- type: file
path: /path/to/your/go/log.log
service: go
source: go
sourcecategory: sourcecodeHere are some little advices:
