I am trying to build an analytics Dashboard using the below Metrics/KPIs for all the EC2 Instance.
Total CPU vs CPUUtilized
Total RAM vs RAMUtilized
Total EBS Volume vs EBSUtilized.
For example, I have lunch an EC2 instance with 4 CPU, 16GiB RAM and 50GB SSD, I would like to know the above KPIs in a time series trend. I am not getting any clue on where to get the data from EC2. Tried the EC2 instance metrics through CloudWatch using boto3 client, however did not get the above Metrics. I would like to know :
Where to find the data with above Metrics ?
Need the above metrics data in s3 on an daily basis.
Similarly is there a way to get similar metrics for AWS RDS and AWS EKS Cluster ?
Thanks!
The Amazon EC2 service collects information about the virtual machine (instance) and sends it to Amazon CloudWatch Logs.
See: List the available CloudWatch metrics for your instances - Amazon Elastic Compute Cloud
Note that it only collects metrics that can be observed from the virtual machine itself -- CPU Utilization, network traffic and Amazon EBS traffic. The EC2 service cannot see what is happening 'inside' the instance, since it is the Operating System that controls memory and manages the contents of the disks.
If you wish to collect metrics from the Operating System, then you would need to Collect metrics and logs from Amazon EC2 instances and on-premises servers with the CloudWatch agent - Amazon CloudWatch. This agent runs in the instance and sends metrics out to CloudWatch.
You can write code that calls the CloudWatch Metrics APIs to retrieve metrics. Note that the metrics returned are calculated over a time period (eg average CPU Utilization over a 5-minute period). It is not possible to retrieve the actual raw datapoints.
See also:
Monitoring Amazon RDS metrics with Amazon CloudWatch - Amazon Relational Database Service
Amazon EKS and Kubernetes Container Insights metrics - Amazon CloudWatch
Related
I have setup a system for RDS monitoring and used mysqld_exporter and postgres_exporter and exposed their metrics to prometheus server but I am not getting important metrics to monitor like CPU_Utilization, memory available, iops rate, latency etc. I am getting about 1800 metrics but none of them are these I suppose. I think i need node exporter for RDS monitoring for getting cpu utilization but i don't know how to configure node_exporter for RDS instance.
PS: I don't want to use AWS Cloudwatch metrics
I want to monitor the average Disk Utilization across all the EC2 instances inside an auto scaling group.
I know I can monitor CPU Utilization across all instances inside an auto scaling group because there's a CloudWatch metrics for that. However, I need CloudWatch Agent to monitor the Disk Utilization. Is there a good way to monitor this? Or do I need to implement my own automation using Lambda?
CPU Utilization is managed by the Operating System, which runs 'inside' the EC2 instance. AWS has no access to your Operating System and, therefore, no knowledge of your disk utilization. For the same reason, an AWS Lambda function would not be able to access this information either.
Instead, Collect metrics and logs from Amazon EC2 instances and on-premises servers with the CloudWatch agent - Amazon CloudWatch. The CloudWatch is probably already installed on the instance and can be configured to collect metrics such as:
disk_total
disk_used
disk_used_percent
mem_available
mem_used
I need to create an Alarm in AWS which notifies me when my Storage used >= 80%
AWS has no visibility inside your Amazon EC2 instance. This is because the instance is run by the Operating System and AWS does not have a login to the instance.
However, you can Collect metrics and logs from Amazon EC2 instances and on-premises servers with the CloudWatch agent - Amazon CloudWatch, which is a piece of software you install on the instance. It then runs inside the instance and sends metrics (such as available disk space) to Amazon CloudWatch. You can then create an Alarm on that metric to receive notification when the disk spaces metric passes a threshold.
There is an redis instance been created in ElasticCache and this will be used to store and retrieve data as usual.
Is there any max memory for this redis instance and how can that be checked?
All I need is say example if the data size in redis reaches above 100 mb then it should be auto scaled without me having to manually scale it or create a new instance and things like that.
And when the data size is reduced(example: From 300mb to 50 mb due to less traffic) then the instances should be reduced so that there is no extra cost incured.
How can this be configured in AWS ElastiCache?
unfortunately there is no auto-scaling policy attach with Elasticcache out of the box, amazon ElastiCache provides console, CLI, and API support for scaling your Redis (cluster mode disabled) replication group up.
One option that you can try is to set cloud watch alarm base on node memory and then trigger lambda function that will scale up and down base on metrics.
Create a CW alarm
Select Elastic cache metrics
Select Node level metrics
Select Free memory metrics
Trigger notification to SNS topic
Subscribe lambda function
scaleup/scaledown base on metrics
Now Elasticache supports autoscaling
https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/AutoScaling.html
I need to create a AWS Lambda function in JAVA to print the EC2 instance's CPU Utilisation. How to get the CPU utilization of EC2 instance using AWS JAVA SDK.
Amazon CloudWatch maintains metrics about every Amazon EC2 instance, including CPU Utilization.
By default, metrics are collected at 5-minute intervals at no charge. You can enable detailed monitoring for an instance, which will collect metrics at 1-minute intervals. Additional charges apply.
You can obtain the metrics via a call to Amazon CloudWatch. Use the getMetricData() function.
Note that you actually request a calculated value over a period of time, such as "Average CPU for the previous 5 minutes".