Cloud - AWS - EC2 CloudWatch Opspack
Amazon Elastic Compute Cloud (Amazon EC2) is a web service that provides secure, resizable compute capacity in the cloud. It is designed to make web-scale cloud computing easier for developers and send metrics to CloudWatch for your EC2 instances making AWS Monitoring Simple.
What You Can Monitor Copied
Opsview Monitor contains all the performance metrics needed to monitor diagnose and view metrics for your EC2 instance such as CPU utilization, CPU credit usage and more.
By default, you can retrieve metrics with a resolution of 5 minutes free of charge. Users are allowed to enable 1-minute resolution metrics from AWS which incur a cost upon usage and should be enabled through your AWS console. Opsview plugin is able to cater for both resolutions.
Service Checks Copied
| Service Check | Description | Default Threshold | Unit of Measurement |
|---|---|---|---|
| AWS/EC2.CPUUtilization | Reports the usage of the CPU in percentage, thresholds can be set to get critical and warnings. | Warning: 80 Critical: 90 | Percentage |
| AWS/EC2.CPUCreditBalance | T2 instances only The number of earned CPU credits that an instance has accrued since it was launched or started. For T2 Standard, the metric also includes the number of launch credits that have been accrued. | - | Credits |
| AWS/EC2.CPUCreditUsage | T2 instances only The number of CPU credits spent by the instance for CPU utilization. One CPU credit equals one vCPU running at 100% utilization for one minute or an equivalent combination of vCPUs, utilization, and time (for example, one vCPU running at 50% utilization for two minutes or two vCPUs running at 25% utilization for two minutes). | - | Credits |
| AWS/EC2.DiskReadOps | Completed read operations to all disks in Instance Store volume only. If there are no instance store volumes the metric is either 0 or not reported. Instances with EBS as storage will return Unknown. | - | Count |
| AWS/EC2.DiskWriteOps | Completed Write operations to all the instance store volumes available to the instance. If there are no instance store volumes the metric is either 0 or not reported. Instances with EBS as storage will return Unknown. | - | Count |
| AWS/EC2.DiskWriteBytes | Bytes written to all instance store volumes available to the instance. If there are no instance store volumes the metric is either 0 or not reported. Instances with EBS as storage will return Unknown. | - | Bytes |
| AWS/EC2.DiskReadBytes | Bytes Read from all disks in Instance Store volume only. If there are no instance store volumes the metric is either 0 or not reported. Instances with EBS as storage will return Unknown. | - | Bytes |
| AWS/EC2.NetworkIn | The number of bytes received on all network interfaces by the instance. This metric identifies the volume of incoming network traffic to a single instance. | - | Bytes |
| AWS/EC2.NetworkOut | The number of bytes sent out on all network interfaces by the instance. This metric identifies the volume of outgoing network traffic from a single instance. | - | Bytes |
| AWS/EC2.NetworkPacketsIn | The number of packets received on all network interfaces by the instance. This metric identifies the volume of incoming traffic in terms of the number of packets on a single instance. This metric is available for basic monitoring only. | - | Count |
| AWS/EC2.NetworkPacketsOut | The number of packets sent out on all network interfaces by the instance. This metric identifies the volume of outgoing traffic in terms of the number of packets on a single instance. This metric is available for basic monitoring only. | - | Count |
| AWS/EC2.StatusCheckFailed | Reports whether the instance has passed both the instance status check and the system status check in the last minute.This metric can be either 0 (passed) or 1 (failed). By default, this metric is available at a 1-minute frequency at no charge. | - | Count |
Prerequisites Copied
The steps illustrated below are using a t2.micro with EBS back storage EC2 instance so the following rules apply.
- The Credit Balance and Credit Usage service checks will execute as per the Service Checks table above.
- As this is an EBS storage type the Disk Read Bytes, Disk Read Ops, Disk Write Bytes and Disk Write Ops service checks will return unknown correctly as they are not available with EBS backed storage type.
Known Issues Copied
This opspack will write over the variable AWS_CLOUDWATCH_AUTHENTICATION, so if you have any existing hosts monitoring AWS you may need to make changes to those hosts.
Setup and Configuration Copied
Add the Host Template Copied
Add the Cloud - AWS - EC2 CloudWatch Host Template to your Opsview Monitor host. Add the Primary Hostname/IP. This can be the Public DNS (IPV4) or IPV4 Public IP from the Description tab of an EC2 instance in the EC2 Console in AWS.
Note
For more information, refer to the documentation on Adding Host Templates to Hosts.
Add and configure variables required for this host Copied
| Variable | Description |
|---|---|
| AWS_CLOUDWATCH_AUTHENTICATION | Authentication details for CloudWatch. The Value is not used and therefore can be set to anything. Either override the File Path with the location of your credentials file, or override the Access Key and Secret Key arguments (this approach is recommended as the values will be encrypted). Optionally, override the Region (default: eu-west-1) with the location of your instance if you are not using the default region.
|
| AWS_CLOUDWATCH_ROLE_ARN | This optional variable is the Amazon Resource Name (ARN) of the role to be used for the service checks. Override the Access ARN with the ARN of the role. The account should have AssumeRole(STS) for this ARN. |
| AWS_EC2_INSTANCE_ID | The Instance ID of your EC2 instance. Override the Value with the Instance ID of your EC2 instance. |
Note
For more information, refer to the documentation on Adding Variables to Hosts.
Apply Changes Copied
Apply Changes and the system will then be monitored:
