CloudWatch collects monitoring and operational data in the form of logs, metrics, and events, and visualizes it using automated dashboards so you can get a unified view of your AWS resources, applications, and services that run on AWS and on premises.
What are 3 things you can do in CloudWatch?
You can use Amazon CloudWatch to collect and track metrics, collect and monitor log files, and set alarms.
Why do I need CloudWatch?
CloudWatch enables you to monitor your complete stack (applications, infrastructure, and services) and use alarms, logs, and events data to take automated actions and reduce mean time to resolution (MTTR). This frees up important resources and allows you to focus on building applications and business value.
What are the primary benefits of CloudWatch?
CloudWatch provides you with data and actionable insights to monitor your applications, respond to system-wide performance changes, and optimize resource utilization. CloudWatch collects monitoring and operational data in the form of logs, metrics, and events.
What does Amazon CloudWatch do?
Amazon CloudWatch is a monitoring and management service that provides data and actionable insights for AWS, hybrid, and on-premises applications and infrastructure resources. You can use CloudWatch Container Insights to monitor, troubleshoot, and alert your containerized applications and microservices.
What can we use to access CloudWatch?
Amazon CloudWatch can be accessed via API, command-line interface, AWS SDKs, and the AWS Management Console.
What is CloudWatch and how it works?
Amazon CloudWatch is basically a metrics repository. An AWS service—such as Amazon EC2—puts metrics into the repository, and you retrieve statistics based on those metrics. You can configure alarm actions to stop, start, or terminate an Amazon EC2 instance when certain criteria are met.
How do I use CloudWatch alarm?
There is no limit to the number of alarms that you can create. To create or update an alarm, you use the CloudWatch console, the PutMetricAlarm API action, or the put-metric-alarm command in the AWS CLI. Alarm names must contain only ASCII characters.
What actions can I take from a CloudWatch alarm?
Using Amazon CloudWatch alarm actions, you can create alarms that automatically stop, terminate, reboot, or recover your EC2 instances. You can use the stop or terminate actions to help you save money when you no longer need an instance to be running.
What types of monitoring can Amazon CloudWatch be used for?
Amazon CloudWatch can monitor AWS resources such as Amazon EC2 instances, Amazon DynamoDB tables, and Amazon RDS DB instances, as well as custom metrics generated by your applications and services, and any log files your applications generate.
What is AWS CloudWatch event?
Amazon CloudWatch Events delivers a near real-time stream of system events that describe changes in Amazon Web Services (AWS) resources. Using simple rules that you can quickly set up, you can match events and route them to one or more target functions or streams.
What is the difference between CloudWatch alarm and event?
Alarms invoke actions only for sustained changes. Alarms watch a single metric and respond to changes in that metric; events can respond to actions (such as a lambda being created or some other change in your AWS environment) Alarms can be added to CloudWatch dashboards, but events cannot.2 Oct 2019