Amazon CloudWatch monitors your Amazon Web Services (AWS) resources and the applications you run on AWS in real time.
End Goal: Keep an application log and a log of API calls made from Vital, so that I have a reference point.
Installing cloudwatch agent
- Use the command line to install the CloudWatch agent on an Amazon EC2 instance
wget https://s3.amazonaws.com/amazoncloudwatch-agent/redhat/amd64/latest/amazon-cloudwatch-agent.rpm
- Install the package (Red hat)
rpm -U ./amazon-cloudwatch-agent.rpm
- Start the CloudWatch agent configuration wizard
/opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-config-wizard
Setup wizard
- Log file path /home/finance/.pm2/logs/app-error-0.log
- Create log group name: vital-platform-dev
- Log stream name : error
- Add additional log info
- Log file path /home/finance/.pm2/logs/app-out-0.log
- Add another log stream name: output
- To use the command line to start the CloudWatch agent on a server.
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -s -c file:configuration-file-path
- Replace configuration-file-path with the path to the agent configuration file.
Steps to See Log groups
- go to https://console.aws.amazon.com/cloudwatch/home?region=us-east-1#logsV2:log-groups/log-group/vital-platform-dev
- Click ‘Log Groups’
Log level
| Priority | Level | Log functions that produce visible output |
|---|---|---|
| 0 | silent | N/A |
| 1 | error | .error() |
| 2 | warn | .warn(), .error() |
| 3 | debug | .debug(), .warn(), .error() |
| 4 | info | .info(), .debug(), .warn(), .error() |
| 5 | verbose | .verbose(), .info(), .debug(), .warn(), .error() |
| 6 | silly | .silly(), .verbose(), .info(), .debug(), .warn(), .error() |