AWS Beanstalk Application Health Check - amazon-elastic-beanstalk

Question

We use Beanstalk to deploy node applications. It works very well. I've created a couple of config files in an .ebextensions directory, to apply configuration info to our apps when we load them up. Again mostly works well. I have one thing that does not, and that is defining the application health check URL. I can't get it to go. One odd thing about it, it seems to be only parameter I have come across so far that has spaces in it, and I'm wondering about that. I have tried enclosing the values in quotes, just to see if that is the problem, but it still doesn't work. Has anyone done this before, and can tell me whether it works, and if there is something syntactical about this that is incorrect? As I said, the rest of the params get set correctly in beanstalk, just the last one doesn't. Note #environment# gets replaced with a grunt script before this gets deployed.
Here's the config file:
option_settings:
- namespace: aws:elasticbeanstalk:application:environment
option_name: NODE_ENV
value: #environment#
- namespace: aws:elasticbeanstalk:container:nodejs
option_name: NodeVersion
value: 0.10.10
- namespace: aws:autoscaling:trigger
option_name: LowerThreshold
value: 40
- namespace: aws:autoscaling:trigger
option_name: MeasureName
value: CPUUtilization
- namespace: aws:autoscaling:trigger
option_name: UpperThreshold
value: 60
- namespace: aws:autoscaling:trigger
option_name: Unit
value: Percent
- namespace: aws:elasticbeanstalk:application
option_name: Application Healthcheck URL
value: /load_balance_test

Answer 1

Adding this worked for me:
# .ebextensions/healthcheckurl.config
option_settings:
- namespace: aws:elasticbeanstalk:application
option_name: Application Healthcheck URL
value: /health
- namespace: aws:elasticbeanstalk:environment:process:default
option_name: HealthCheckPath
value: /health
I discovered the second setting by doing eb config, which gives a nice overview of environment settings that can be overriden with option_settings in .ebextensions/yet-another.config files.

Answer 2

The spaces in this property name are weird, but it works when used with the alternative shorthand syntax for options:
option_settings:
aws:elasticbeanstalk:application:
Application Healthcheck URL: /

Answer 3

I use CloudFormation for EB, and in CF the syntax for that parameter is very strange. If that config file works the same as CF, the following string should work for you:
HTTP:80/load_balance_test

Answer 4

If you're using Terraform, then just make sure you have spaces in the name, and it will work fine:
setting {
namespace = "aws:elasticbeanstalk:application"
name = "Application Healthcheck URL"
value = "/api/health"
}

Answer 5

I just tried. It worked for me. Only the format specified in the original question worked for me i.e.,
option_settings:
- namespace: aws:elasticbeanstalk:application
option_name: Application Healthcheck URL
value: /api/v1/health/

Answer 6

you also might want to set the health_check_type to ELB instead of default EC2.
this is how I configured mine
$ cat .ebextensions/0090_healthcheckurl.config
Resources:
AWSEBAutoScalingGroup:
Type: "AWS::AutoScaling::AutoScalingGroup"
Properties:
HealthCheckType: "ELB"
HealthCheckGracePeriod: "600"
option_settings:
- namespace: aws:elasticbeanstalk:application
option_name: Application Healthcheck URL
value: /_status