Please tell me about failure detection and automatic switching method of the web server

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When operating a redundant WEB 3-layer system in different AZs as follows

  • Detect the failure when "OS failure" occurs as an example at the point The method and procedure for automatically disconnecting the AZ side with ALB and routing to AZ ② please tell me.

*Is there a mechanism for linking information from the AP server → WEB server → AP server? Please let me know if there is a reference document

I don't have auto scaling set

ALB→web server→*AP server→RDS AZ①

↘ Web server → AP server ↗   AZ②
asked 3 months ago38 views
1 Answer
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Hi There

Please take a look at this reference architecture for hosting a three-tier web application across multiple availability zones

https://d1.awsstatic.com/architecture-diagrams/ArchitectureDiagrams/web-application-architecture-on-aws-ra.pdf?did=wp_card&trk=wp_card

Also, here is a whitepaper guide for hosting web applications on AWS

https://docs.aws.amazon.com/whitepapers/latest/web-application-hosting-best-practices/an-aws-cloud-architecture-for-web-hosting.html

You might also find the documentation about Load Balancer health checks useful

https://docs.aws.amazon.com/elasticloadbalancing/latest/network/target-group-health-checks.html

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Matt-B
answered 3 months ago

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