Health checks failed with these code :[404]

Application load balancer For one az it's showing healthy For other az it's showing below error Health checks failed with these code :[404]

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Kalyan

질문됨 일 년 전4797회 조회

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Hi, this error probably means that the processing instances (EC2, ECS / Fargate, etc.) responding to health check in each AZ are not configured strictly identically. You should compare the configs of those instances in different AZs in all details to see where the discrepancy is.

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Didier_Durand

답변함 일 년 전

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Sedat Salman

검토됨 일 년 전

Hi.This docunent will help you to identify cause of failing healthcheck in other az.

https://repost.aws/knowledge-center/elb-fix-failing-health-checks-alb

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Hiroki Takahashi

답변함 일 년 전

수락된 답변

404 is page not found. What ever your target group has configured for health check is finding the page in all the good az’s but the page doesn’t exist on the end machine that’s returning 404.

As suggested your instance is setup differently. Check it’s running same configs on the webserver, all the pages exist, the file system has the correct permissions etc.

This is a host issue and not alb issue.

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Gary Mclean

답변함 일 년 전

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Sedat Salman

검토됨 일 년 전

Health checks failed with these code :[404]

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