AWS Elastic Load Balancing Operations

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External

Internal

Load Balancer Operations

Describe Load Balancers

aws [--region ca-central-1 ...] elbv2 describe-load-balancers

Elastic Load Balancing V2 Deployment with CloudFormation

Elastic Load Balancing V2 Deployment with CloudFormation

Create a Network Load Balancer

Test a Network Load Balancer

curl http://playground-nlb-85d74951c7b728b3.elb.us-west-2.amazonaws.com:10001/amazons

Create an Application Load Balancer

Application Load Balancer GetAtt Attributes

GetAtt
  • DNSName

Connecting Internet-Facing Load Balancer to Private IP Address Targets

Connecting Internet-Facing Load Balancer to Private IP Address Targets

Register a Target with a Target Group in Command Line

aws elbv2 register-targets --target-group-arn arn:aws:elasticloadbalancing:us-west-2:77777777777:targetgroup/themyscira/4d66315292d681f9 --targets Id=10.7.1.84 Id=10.7.1.151

Listener Operations

aws [--region ...] elbv2 describe-listeners <--load-balancer-arn ... | --listener-arns ...>
aws --region ca-central-1  elbv2 describe-listeners --listener-arns arn:aws:elasticloadbalancing:ca-central-1:777777777777:listener/app/infinity-test-alb/ac8ae6a4de687154/4c3e44faee30b5d2

Target Groups Operations

Resources:
  ...
  TargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    #
    # DependsOn is important, I've seen race conditions with the load balancer
    #
    DependsOn: ApplicationLoadBalancer
    Properties:
      Name: !Sub ${Color}-themyscira-tg
      VpcId: !Ref VPC
      Protocol: HTTP
      Port: !Ref ApplicationPort
      TargetType: ip
      HealthCheckProtocol: HTTP
      HealthCheckIntervalSeconds: 60
      HealthCheckTimeoutSeconds: 10
      HealthyThresholdCount: 3
      UnhealthyThresholdCount: 3
      HealthCheckPath: '/actuator/health'

Troubleshooting

Application Load Balancer Troubleshooting

Troubleshoot Your Application Load Balancers