{"id":496,"date":"2024-08-09T13:46:03","date_gmt":"2024-08-09T17:46:03","guid":{"rendered":"https:\/\/waterloobae.com\/?p=496"},"modified":"2025-08-20T14:28:54","modified_gmt":"2025-08-20T18:28:54","slug":"building-auto-scaling-system-with-lb-asg-on-aws","status":"publish","type":"post","link":"https:\/\/waterloobae.com\/blog\/2024\/08\/09\/building-auto-scaling-system-with-lb-asg-on-aws\/","title":{"rendered":"Building Auto Scaling System with LB & ASG on AWS"},"content":{"rendered":"\n

This blog lists the sequences of AWS services you have to setup for a scalable system. It is not required to setup in this sequence, but I found it is one of straight forward and the easiest way.<\/p>\n\n\n\n

AWS Certificate Manger<\/h2>\n\n\n\n

Create SSL certificate for your system URL and import it. You can reimport for update.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

EC2 – Key Pairs & Security Groups<\/h2>\n\n\n\n

Create key pair to use. EC2->Network & Security -> Key Pairs<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The user name of Ubuntu is Ubuntu not like other EC2 instances. <\/p>\n\n\n\n

Create Security Group for CE2 instances(Web Server) and RDS(DB Server)<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Dev Server<\/h2>\n\n\n\n
    \n
  • Create one EC2 instance. This can be used as your dev. server.<\/li>\n\n\n\n
  • Configure your system on it. <\/li>\n\n\n\n
  • Create and Install SSL certificate. Do not set up redirect from HTTP to HTTPS. Auto Scaling Group listener will do the redirection. <\/li>\n\n\n\n
  • Lastly, create AMI Image fro Auto Scaling Group.<\/li>\n<\/ul>\n\n\n\n

    Launch Template<\/h2>\n\n\n\n
      \n
    • Select the AMI image created from Dev Server. <\/li>\n\n\n\n
    • Select Actions -> Modify template(Create new version) to update Auto Scaling Group.<\/li>\n\n\n\n
    • Change Default version by clicking Actions -> Set default version<\/li>\n<\/ul>\n\n\n\n
      \"\"<\/figure>\n\n\n\n

      Auto Scaling Groups<\/h2>\n\n\n\n
        \n
      • Create Sale in & Scale out Policy (Step Scaling) <\/li>\n\n\n\n
      • Create CloudWatch Alarm for Sacle in and Scale out Policy.<\/li>\n<\/ul>\n\n\n\n
        \"\"<\/figure>\n\n\n\n

        Load Balancers<\/h2>\n\n\n\n
          \n
        • Your system URL should be assigned here. <\/li>\n\n\n\n
        • Create a Target Group to include instances from the Auto Scaling Group. <\/li>\n\n\n\n
        • Make sure Stickiness is enabled if your system uses sessions.<\/li>\n\n\n\n
        • Setup Listeners for HTTP(80) and HTTPS(443)<\/li>\n<\/ul>\n\n\n\n
          \"\"<\/figure>\n\n\n\n

          RDS<\/h2>\n\n\n\n
            \n
          • Create one Parameter Group in Amazon RDS with “max_allowed_packet: 64000000” <\/li>\n\n\n\n
          • Modify cluster to have this new parameter group <\/li>\n\n\n\n
          • Reboot DB instances.<\/li>\n<\/ul>\n\n\n\n

            AWS WAF – Web ACLs<\/h2>\n\n\n\n

            Make if sure to set IP sets if it has in-bound and\/or out-bound API call to call\/listen.<\/p>\n\n\n\n

            <\/p>\n","protected":false},"excerpt":{"rendered":"

            This blog lists the sequences of AWS services you have to setup for a scalable system. It is not required to setup in this sequence, but I found it is one of straight forward and the easiest way. AWS Certificate Manger Create SSL certificate for your system URL and import it. You can reimport for […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,4],"tags":[],"class_list":["post-496","post","type-post","status-publish","format-standard","hentry","category-aws","category-it-tips"],"_links":{"self":[{"href":"https:\/\/waterloobae.com\/blog\/wp-json\/wp\/v2\/posts\/496","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/waterloobae.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/waterloobae.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/waterloobae.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/waterloobae.com\/blog\/wp-json\/wp\/v2\/comments?post=496"}],"version-history":[{"count":5,"href":"https:\/\/waterloobae.com\/blog\/wp-json\/wp\/v2\/posts\/496\/revisions"}],"predecessor-version":[{"id":508,"href":"https:\/\/waterloobae.com\/blog\/wp-json\/wp\/v2\/posts\/496\/revisions\/508"}],"wp:attachment":[{"href":"https:\/\/waterloobae.com\/blog\/wp-json\/wp\/v2\/media?parent=496"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/waterloobae.com\/blog\/wp-json\/wp\/v2\/categories?post=496"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/waterloobae.com\/blog\/wp-json\/wp\/v2\/tags?post=496"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}