EC2

This check connects to an AWS account with the specified credentials, launch an EC2 instance with an option for userData. This test can be used to check the availability of an ami, account service limits, run backup & restore operations, etc.

apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: ec2-check
spec:
  interval: 30
  ec2:
    - name: ec2-check
      ami: ami-04f7efe62f419d9f5
      description: test instance
      accessKeyID:
        valueFrom:
          secretKeyRef:
            name: aws-credentials
            key: AWS_ACCESS_KEY_ID
      secretKey:
        valueFrom:
          secretKeyRef:
            name: aws-credentials
            key: AWS_SECRET_ACCESS_KEY
      region: eu-west-1
      userData: |
        #!/bin/bash
        yum install -y httpd
        systemctl start httpd
        systemctl enable httpd
        usermod -a -G apache ec2-user
        chown -R ec2-user:apache /var/www
        chmod 2775 /var/www
        find /var/www -type d -exec chmod 2775 {} \;
        find /var/www -type f -exec chmod 0664 {} \;
      securityGroup: default

Field	Description	Scheme	Required
ami	Master image to create EC2 instance from	string	Yes
canaryRef	Reference Canary object	[]v1.LocalObjectReference
keepAlive	Toggle keepalive with true or false	bool
securityGroup	Security groups to attach to the EC2 instance	string
timeout	Set keep-alive timeout	int
userData	Configure EC2 instance with user data	string
waitTime	Set wait-time for EC2 instance launch	int
name	Name of the check, must be unique within the canary	string	Yes
description	Description for the check	string
icon	Icon for overwriting default icon on the dashboard	string
labels	Labels for check	map[string]string
test	Evaluate whether a check is healthy	Expression
display	Expression to change the formatting of the display	Expression
transform	Transform data from a check into multiple individual checks	Expression
metrics	Metrics to export from	[]Metrics
Connection
connection	Path of existing connection e.g. connection://aws/instance Mutually exclusive with accessKey and secretKey	Connections
accessKey		EnvVar
secretKey		EnvVar
endpoint	Custom AWS endpoint	string
region	AWS region	string
skipTLSVerify	Skip TLS verify when connecting to aws	bool

Connecting to AWS

There are 3 options when connecting to AWS:

1. An AWS instance profile or pod identity (the default if no connection or accessKey is specified)

2. connection, this is the recommended method, connections are reusable and secure

aws-connection.yaml

apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: ec2-check
spec:
  interval: 30
  ec2:
    - name: ec2-check
      ami: ami-04f7efe62f419d9f5
      description: test instance
      connection: connection://aws/internal
      region: eu-west-1
      userData: |
        #!/bin/bash
        yum install -y httpd
        systemctl start httpd
        systemctl enable httpd
        usermod -a -G apache ec2-user
        chown -R ec2-user:apache /var/www
        chmod 2775 /var/www
        find /var/www -type d -exec chmod 2775 {} \;
        find /var/www -type f -exec chmod 0664 {} \;
      securityGroup: default

3. accessKey and secretKey EnvVar with the credentials stored in a secret.

aws.yaml

apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: ec2-check
spec:
  interval: 30
  ec2:
    - name: ec2-check
      ami: ami-04f7efe62f419d9f5
      description: test instance
      accessKeyID:
        valueFrom:
          secretKeyRef:
            name: aws-credentials
            key: AWS_ACCESS_KEY_ID
      secretKey:
        valueFrom:
          secretKeyRef:
            name: aws-credentials
            key: AWS_SECRET_ACCESS_KEY
      region: eu-west-1
      userData: |
        #!/bin/bash
        yum install -y httpd
        systemctl start httpd
        systemctl enable httpd
        usermod -a -G apache ec2-user
        chown -R ec2-user:apache /var/www
        chmod 2775 /var/www
        find /var/www -type d -exec chmod 2775 {} \;
        find /var/www -type f -exec chmod 0664 {} \;
      securityGroup: default