AWS Code Sample
Catalog

create_enable_alarms.go

Creates and enables an action on an alarm.

/* Copyright 2010-2018 Amazon.com, Inc. or its affiliates. All Rights Reserved. This file is licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at http://aws.amazon.com/apache2.0/ This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package main import ( "github.com/aws/aws-sdk-go/aws" "github.com/aws/aws-sdk-go/aws/session" "github.com/aws/aws-sdk-go/service/cloudwatch" "fmt" "os" ) func main() { if len(os.Args) != 4 { fmt.Println("You must supply an instance name, value, and alarm name") os.Exit(1) } instance := os.Args[1] value := os.Args[2] name := os.Args[3] // Initialize a session that the SDK uses to load // credentials from the shared credentials file ~/.aws/credentials // and configuration from the shared configuration file ~/.aws/config. sess := session.Must(session.NewSessionWithOptions(session.Options{ SharedConfigState: session.SharedConfigEnable, })) // Create new CloudWatch client. svc := cloudwatch.New(sess) // Create a metric alarm that reboots an instance if its CPU utilization is // greater than 70.0%. _, err := svc.PutMetricAlarm(&cloudwatch.PutMetricAlarmInput{ AlarmName: aws.String(name), ComparisonOperator: aws.String(cloudwatch.ComparisonOperatorGreaterThanThreshold), EvaluationPeriods: aws.Int64(1), MetricName: aws.String("CPUUtilization"), Namespace: aws.String("AWS/EC2"), Period: aws.Int64(60), Statistic: aws.String(cloudwatch.StatisticAverage), Threshold: aws.Float64(70.0), ActionsEnabled: aws.Bool(true), AlarmDescription: aws.String("Alarm when server CPU exceeds 70%"), Unit: aws.String(cloudwatch.StandardUnitSeconds), // This is apart of the default workflow actions. This one will reboot the instance, if the // alarm is triggered. AlarmActions: []*string{ aws.String(fmt.Sprintf("arn:aws:swf:us-east-1:%s:action/actions/AWS_EC2.InstanceId.Reboot/1.0", instance)), }, Dimensions: []*cloudwatch.Dimension{ { Name: aws.String("InstanceId"), Value: aws.String(value), }, }, }) if err != nil { fmt.Println("Error", err) return } // This will enable the alarm to our instance. result, err := svc.EnableAlarmActions(&cloudwatch.EnableAlarmActionsInput{ AlarmNames: []*string{ aws.String(name), }, }) if err != nil { fmt.Println("Error", err) return } fmt.Println("Alarm action enabled", result) }

Sample Details

Service: cloudwatch

Last tested: 2018-03-16

Author: Doug-AWS

Type: full-example

On this page: