'AWS Cloudwatch for ELB monitoring exclude a route

WE have AWS Cloudwatch alarm set to ELB-5XX. One of our API keeps causing it shoot beyond its limit. We have a marketing event coming up and we probably won't be able to fix the root cause of it beforehand.

I want to exclude this route from ELB-5XX alarm. Is this possible? Maybe through a modified query.

amazon-cloudwatch

Solution 1:^[1]

Assuming it is Application Load Balancer because this can be achieved very easily on ALB.

Go to your ALB's target group, view and edit rules.
Click on + -> insert rule
Add condition by choosing path for example -> /admin
add action, you can here forward to other target group or redirect to another host with 301 status code or return a fixed response code of your choice, of course, anything except 5xx response code otherwise it will add up to your cloudwatch alarm

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'AWS Cloudwatch for ELB monitoring exclude a route

Solution 1:[1]

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Solution 1:^[1]