Tag an Application Load Balancer - Elastic Load Balancing
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Tag an Application Load Balancer

Tags help you to categorize your load balancers in different ways, for example, by purpose, owner, or environment.

You can add multiple tags to each load balancer. If you add a tag with a key that is already associated with the load balancer, it updates the value of that tag.

When you are finished with a tag, you can remove it from your load balancer.

Restrictions

  • Maximum number of tags per resource—50

  • Maximum key length—127 Unicode characters

  • Maximum value length—255 Unicode characters

  • Tag keys and values are case sensitive. Allowed characters are letters, spaces, and numbers representable in UTF-8, plus the following special characters: + - = . _ : / @. Do not use leading or trailing spaces.

  • Do not use the aws: prefix in your tag names or values because it is reserved for Amazon use. You can't edit or delete tag names or values with this prefix. Tags with this prefix do not count against your tags per resource limit.

Console
To update the tags for a load balancer

  1. Open the Amazon EC2 console at https://console.amazonaws.cn/ec2/.

  2. On the navigation pane, choose Load Balancers.

  3. Select the load balancer.

  4. On the Tags tab, choose Manage tags.

  5. To add a tag, choose Add tag and enter the tag key and tag value.

  6. To update a tag, enter new values in Key or Value.

  7. To delete a tag, choose Remove next to the tag.

  8. Choose Save changes.

Amazon CLI
To add tags

Use the add-tags command.

aws elbv2 add-tags \
    --resource-arns load-balancer-arn \
    --tags "Key=project,Value=lima" "Key=department,Value=digital-media"
To remove tags

Use the remove-tags command.

aws elbv2 remove-tags \
    --resource-arns load-balancer-arn \
    --tag-keys project department
CloudFormation
To add tags

Update the AWS::ElasticLoadBalancingV2::LoadBalancer resource to include the Tags property.

Resources:
  myLoadBalancer:
    Type: 'AWS::ElasticLoadBalancingV2::LoadBalancer'
    Properties:
      Name: my-alb
      Type: application
      Scheme: internal
      Subnets: 
        - !Ref subnet-AZ1
        - !Ref subnet-AZ2
      SecurityGroups: 
        - !Ref mySecurityGroup
      Tags:  
        - Key: 'project'
          Value: 'lima'
        - Key: 'department'
          Value: 'digital-media'