<ul>
<li>outline</li>
</ul>
<blockquote>
<p>If entire target group of ELB is unhealthy, traffic to target group is allowed.</p>
</blockquote>
<ul>
<li>reference</li>
</ul>
<pre><code class="lang-plaintext">If a target group contains only unhealthy registered targets, the load balancer routes requests to all those targets, regardless of their health status. 
This means that if all targets fail health checks at the same time in all enabled Availability Zones, the load balancer fails open. 
The effect of the fail-open is to allow traffic to all targets in all enabled Availability Zones, regardless of their health status, based on the load balancing algorithm.
</code></pre>
<p><a target="_blank" href="https://docs.aws.amazon.com/elasticloadbalancing/latest/application/target-group-health-checks.html">https://docs.aws.amazon.com/elasticloadbalancing/latest/application/target-group-health-checks.html</a></p>


* outline
    

> If entire target group of ELB is unhealthy, traffic to target group is allowed.

* reference
    

```plaintext
If a target group contains only unhealthy registered targets, the load balancer routes requests to all those targets, regardless of their health status. 
This means that if all targets fail health checks at the same time in all enabled Availability Zones, the load balancer fails open. 
The effect of the fail-open is to allow traffic to all targets in all enabled Availability Zones, regardless of their health status, based on the load balancing algorithm.
```

[https://docs.aws.amazon.com/elasticloadbalancing/latest/application/target-group-health-checks.html](https://docs.aws.amazon.com/elasticloadbalancing/latest/application/target-group-health-checks.html)

routes requests to all those targets, regardless of their health status

routes requests to all those targets, regardless of their health statu

AWS/Elastic Load Balancing

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