AWS Study Group 1 Cloudwatch Flashcards
Which operating systems does Amazon CloudWatch support?
All systems.
Amazon CloudWatch receives and provides metrics for all Amazon EC2 instances and should work with any operating system currently supported by the Amazon EC2 service.
Does the Amazon CloudWatch monitoring charge change depending on which type of Amazon EC2 instance I monitor?
No, the Amazon CloudWatch monitoring charge does not vary by Amazon EC2 instance type.
Will I lose the metrics data if I disable monitoring for an Amazon EC2 instance?
No. You can always retrieve metrics data for any Amazon EC2 instance based on the retention schedules. However, the CloudWatch console limits the search of metrics to 2 weeks after a metric is last ingested to ensure that the most up to date instances are shown in your namespace.
This lets you monitor and troubleshoot your systems and applications using your existing system, application and custom log files.
Amazon CloudWatch Logs
This is a monitoring service for AWS cloud resources and the applications you run on AWS.
AWS Cloudwatch
What 4 options can I use to access CloudWatch?
Amazon CloudWatch can be accessed via API, command-line interface, AWS SDKs, and the AWS Management Console.
This allows allow you to create, customize, interact with, and save graphs of AWS resources and custom metrics.
Amazon CloudWatch Dashboards
This supports Amazon Linux, Ubuntu, CentOS, Red Hat Enterprise Linux, and Windows. This agent will support the ability to monitor individual log files on the host.
The CloudWatch Logs Agent
Can I delete any metrics?
No, CloudWatch does not support metric deletion. Metrics expire based on the retention schedules.
______ is any metric you provide to Amazon CloudWatch.
Custom Metric
A custom metric is any metric you provide to Amazon CloudWatch. For example, you can use custom metrics as a way to monitor the time to load a web page, request error rates, number of processes or threads on your instance, or amount of work performed by your application. You can get started with custom metrics by using the PutMetricData API, our sample monitoring scripts for Windows and Linux, CloudWatch collectd plugin, as well as a number of applications and tools offered by AWS partners.
Does the CloudWatch Logs Agent support IAM roles?
Yes. The CloudWatch Logs Agent is integrated with Identity and Access Management (IAM) and includes support for both access keys and IAM roles.
What is the retention period of all metrics(2)?
CloudWatch launched High Resolution Custom Metrics on July 26, 2017. This enables you to publish and store custom metrics down to 1-second resolution.
Extended retention of metrics was launched on November 1, 2016, and enabled storage of all metrics for customers from the previous 14 days to 15 months.
