Health colors and statuses
Enhanced health reporting represents instance and overall environment health by using four colors, similar to basic health reporting. Enhanced health reporting also provides seven health statuses, which are single-word descriptors that provide a better indication of the state of your environment.
Instance status and environment status
Every time Elastic Beanstalk runs a health check on your environment, enhanced health reporting checks the health of each instance in your environment by analyzing all of the data available. If any lower-level check fails, Elastic Beanstalk downgrades the health of the instance.
Elastic Beanstalk displays the health information for the overall environment (color, status, and cause) in the environment management console. This information is also available in the EB CLI. Health status and cause messages for individual instances are updated every 10 seconds and are available from the EB CLI when you view health status with eb health.
Elastic Beanstalk uses changes in instance health to evaluate environment health, but does not immediately change environment health status. When an instance fails health checks at least three times in any one-minute period, Elastic Beanstalk may downgrade the health of the environment. Depending on the number of instances in the environment and the issue identified, one unhealthy instance can cause Elastic Beanstalk to display an informational message or to change the environment's health status from green (OK) to yellow (Warning) or red (Degraded or Severe).
OK (green)
This status is displayed when:
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An instance is passing health checks and the health agent is not reporting any problems.
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Most instances in the environment are passing health checks and the health agent is not reporting major issues.
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An instance is passing health checks and is completing requests normally.
Example: Your environment was recently deployed and is taking requests normally. Five percent of requests are returning 400 series errors. Deployment completed normally on each instance.
Message (instance): Application deployment completed 23 seconds ago and took 26 seconds.
Warning (yellow)
This status is displayed when:
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The health agent is reporting a moderate number of request failures or other issues for an instance or environment.
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An operation is in progress on an instance and is taking a very long time.
Example: One instance in the environment has a status of Severe.
Message (environment): Impaired services on 1 out of 5 instances.
Degraded (red)
This status is displayed when the health agent is reporting a high number of request failures or other issues for an instance or environment.
Example: environment is in the process of scaling up to 5 instances.
Message (environment): 4 active instances is below Auto Scaling group minimum size 5.
Severe (red)
This status is displayed when the health agent is reporting a very high number of request failures or other issues for an instance or environment.
Example: Elastic Beanstalk is unable to contact the load balancer to get instance health.
Message (environment): ELB health is failing or not available for all instances. None of the instances are sending data. Unable to assume role "arn:aws:iam::123456789012:role/aws-elasticbeanstalk-service-role". Verify that the role exists and is configured correctly.
Message (Instances): Instance ELB health has not been available for 37 minutes. No data. Last seen 37 minutes ago.
Info (green)
This status is displayed when:
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An operation is in progress on an instance.
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An operation is in progress on several instances in an environment.
Example: A new application version is being deployed to running instances.
Message (environment): Command is executing on 3 out of 5 instances.
Message (instance): Performing application deployment (running for 3 seconds).
Pending (grey)
This status is displayed when an operation is in progress on an instance within the command timeout.
Example: You have recently created the environment and instances are being bootstrapped.
Message: Performing initialization (running for 12 seconds).
Unknown (grey)
This status is displayed when Elastic Beanstalk and the health agent are reporting an insufficient amount of data on an instance.
Example: No data is being received.
Suspended (grey)
This status is displayed when Elastic Beanstalk stopped monitoring the environment's health. The environment might not work correctly. Some severe health conditions, if they last a long time, cause Elastic Beanstalk to transition the environment to the Suspended status.
Example: Elastic Beanstalk can't access the environment's service role.
Example: The Auto Scaling group that Elastic Beanstalk created for the environment has been deleted.
Message: Environment health has transitioned from OK to Severe. There are no instances. Auto Scaling group desired capacity is set to 1.
