Full Answer
What is EC2 monitoring in AWS?
Monitoring Amazon EC2. Monitoring is an important part of maintaining the reliability, availability, and performance of your Amazon Elastic Compute Cloud (Amazon EC2) instances and your AWS solutions. You should collect monitoring data from all of the parts in your AWS solutions so that you can more easily debug a multi-point failure if one occurs.
How do I get data for my EC2 instance?
The Amazon EC2 console displays a series of graphs based on the raw data from Amazon CloudWatch. Depending on your needs, you might prefer to get data for your instances from Amazon CloudWatch instead of the graphs in the console. For more information about Amazon CloudWatch, see the Amazon CloudWatch User Guide .
How to monitor all the services running on EC2 instances securely?
You can use CloudWatch to find the state of your services by creating new Metrics. This process becomes expensive and difficult to manage after a point. A Lambda function monitors all the services running on EC2 instances securely. Here is the proposed architecture:
How do I set up an EC2 alarm?
Login to the EC2 Management console. Go to Instances from the navigation pane on the left-hand side. Select the instance for which you wish to create an alarm. Go to the Monitoring tab and then click the Create Alarm button. Click on the create topic option to give the notification a title.
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Which AWS service is used to monitor EC2 Instances?
You can monitor your instances using Amazon CloudWatch, which collects and processes raw data from Amazon EC2 into readable, near real-time metrics.
How do I enable monitoring in EC2?
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/ .In the navigation pane, choose Instances.Select the instance and choose Actions, Monitoring, Manage detailed monitoring.On the Detailed monitoring detail page, for Detailed monitoring, select the Enable check box.Choose Save.
How do I view all EC2 Instances?
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/ . In the navigation pane, choose the option that corresponds to the resource type. For example, to list your instances, choose Instances. The page displays all resources of the selected resource type.
Which tool would you use to monitor the CPU usage of an EC2 instance?
Use Performance Monitor to identify the source of high CPU utilization. If you're still unable to determine the cause of the high CPU utilization, use Performance Monitor and the Performance Analysis of Logs (PAL) tool.
What is AWS monitoring?
What Is AWS Monitoring? Amazon Web Services (AWS) monitoring is a set of practices you can use to verify the security and performance of your AWS resources and data. These practices rely on various tools and services to collect, analyze, and present data insights.
What is the difference between CloudTrail and CloudWatch?
The Difference between CloudWatch and CloudTrail CloudWatch focuses on the activity of AWS services and resources, reporting on their health and performance. On the other hand, CloudTrail is a log of all actions that have taken place inside your AWS environment.
How do you check if any service is running on AWS?
To check if you have any active resources in your account, do the following:Open the AWS Billing and Cost Management console.In the navigation pane, on the left side of the screen, choose Bills. ... Under Details, expand each service to identify the Regions where the services have incurred charges.
How do I find my EC2 instance architecture?
New Amazon EC2 console: Select the instance. On the Details tab, view OS and version information in the Platform details field....New Amazon EC2 console:Select the instance.Choose Actions, Monitor and troubleshoot, Get system log.Search for a keyword, such as Linux or kernel to look in the log entries.
How will you list all the running instances from the Linux command line?
Options--cluster-id (string) The identifier of the cluster for which to list the instances.--instance-group-id (string) ... --instance-group-types (list) ... --instance-fleet-id (string) ... --instance-fleet-type (string) ... --instance-states (list) ... --starting-token (string) ... --max-items (integer)
What we can monitor using CloudWatch?
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 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 does CloudWatch agent do?
CloudWatch Agent is a software package that autonomously and continuously runs on your servers. Using CloudWatch Agent, we can collect metrics and logs from Amazon Elastic Compute Cloud (Amazon EC2), hybrid, and on-premises servers running both Linux and Windows.
Is CloudWatch enabled by default?
Detailed monitoring is enabled by default when you create a launch configuration using the AWS CLI or an SDK. The basic basic monitoring sends in 5 minute periods, while the detailed monitoring sends in 1 minute periods.
How do I monitor my EC2 memory usage?
Simply go to the CloudWatch dashboard in your AWS console and click on Metrics. You'll see a new CWAgent card. After you click on this card, you should see your EC2 memory usage in a graph. Be sure to give it some time for the collection process to start properly.
How does EC2 instance integrate with CloudWatch?
Unified monitoring for EC2 instancesEnable EC2 CloudWatch and server agent integration.Enhance your EC2 monitoring by deploying an agent on the instance.Connect your existing EC2 CloudWatch monitor with the server monitor.UI pages for the integrated EC2 instance monitor.Agent Threshold Profile configuration.
What are 3 things you can do in CloudWatch?
CloudWatch ServiceLens lets you gain visibility into your applications in three main areas: infrastructure monitoring (using metrics and logs to understand the resources supporting your applications), transaction monitoring (using traces to understand dependencies between your resources), and end-user monitoring (using ...
How to create a status check alarm?
To create a status check alarm, go to the Status Check s tab, and then click on the Create Status Check Alarm button. The rest of the procedure is the same as above.
Why does Amazon EC2 run a status check?
Amazon EC2 regularly performs automated checks on your running EC2 instances in order to see if there are any problems with the instance. Problems that might prevent the instance from running applications. These status checks are done every minute so you are always updated on the status of your EC2 instances. The result of the status check is either a pass or a fail.
How to create an alarm on EC2?
To create an alarm using the Amazon EC2 Console, do the following: Login to the EC2 Management console. Go to Instances from the navigation pane on the left-hand side. Select the instance for which you wish to create an alarm. Go to the Monitoring tab and then click the Create Alarm button. EC2 Monitoring Tab.
Why is it important to monitor AWS instances?
In order to ensure the availability and reliability of your Amazon instances, it is important that you know how to monitor the instances from the AWS Web Console.
What are the two types of AWS status checks?
There are two types of checks that are performed, System status checks and Instance status checks. System status checks are problems that require AWS involvement to fix the issue such as power loss, no network connectivity, etc. Instance status checks need your involvement to repair the issue and often detect problems like a corrupted file system, incorrect networking configuration, etc.
Where to find EC2 status check?
You can view the status checks of your EC2 instances on the AWS Management Console. Here’s how to view it:
How to take action when an alarm is triggered?
If you wish to take any action when the alarm is triggered, check the Take the action box. Then, choose if you wish to reboot the instance which means restart the operating system, stop the instance, terminate, or recover the instance. Creating an Alarm.
Short description
The Linux Audit system tracks access to important files and creates an audit trail in case of file corruption or other unintended changes. You can use the Linux Audit system to track changes to files in Amazon Elastic File System (Amazon EFS) or any other file system type.
Resolution
1. Connect to your EC2 instance using SSH as ec2-user/ubuntu/root user. Replace ubuntu with the user name for your AMI.
Problem
AWS provides many tools to monitor its own services. You can add alarms on various CloudWatch events. As you host more and more services on AWS it becomes difficult and important to make sure these services are running. You can use CloudWatch to find the state of your services by creating new Metrics.
Solution
A Lambda function monitors all the services running on EC2 instances securely. Here is the proposed architecture:
Architecture
The primary idea behind this architecture is to securely access EC2 instances over SSH and monitor the services. The SSH keys are rotated periodically.
Steps
In this step, we use CloudFormation to create a Lambda Function that rotates the SSH key and adds the public key in the ~.ssh/authorized_keys file in the instances. The public key is put to an object in AWS S3.
Wrapping it Up
Finally, after all these steps, you have your own custom monitor setup. This monitor is easy to scale to all your services. Each time you add a service to your backend you need to add the service in the monitoring Lambda. All the other parts of the setup remain the same.
