How to configure amazon ec2 load balancer
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This document provides steps to configure an Amazon EC2 load balancer with two nodes. It includes launching two EC2 instances, updating packages, configuring NTP and time synchronization, installing Apache web servers, creating index files with unique content on each node, creating a load balancer and defining security settings, health checks and subnets, associating the instances with the load balancer, and testing basic load balancing functionality.
How to configure amazon ec2 load balancer
- 1. How To Configure Amazon EC2 Load Balancer i | P a g e Table of Contents Overview ...........................................................................................................................................1 Applies To..........................................................................................................................................1 Pre-requisites.....................................................................................................................................1 Launch Instance..................................................................................................................................1 System Update...................................................................................................................................1 Node #1 – OS Packages Update....................................................................................................1 Node #2 – OS Packages Update....................................................................................................2 NTP Configuration ..............................................................................................................................2 System Date Time...............................................................................................................................3 Install – Web Server............................................................................................................................3 Webserver – Index File........................................................................................................................4 Add Node #1 – Content ...............................................................................................................4 Add Node #2 – Content ...............................................................................................................4 LoadBalancer......................................................................................................................................5 Load Balancer – Create LoadBalancer...............................................................................................5 Load Balancer – Definition...............................................................................................................5 Define LoadBalancer Name..........................................................................................................5 Create – Internal LoadBalancer....................................................................................................6 Create – Enable advanced VPC Configuration – Select Subnets.......................................................6 Create – Enable advanced VPC Configuration – Selected Subnets...................................................7 Verify – Security Group................................................................................................................7 Create – Assign Security Group ....................................................................................................8 Create – Configure Security Settings.............................................................................................8 Create – Configure Health Check..................................................................................................9 Create – Configure Health Check - Advanced.................................................................................9 Create – Configure Health Check - Advanced...............................................................................10 Create – Add Tag.......................................................................................................................10 Create – Review ........................................................................................................................11 Create – Creation Status – Progress............................................................................................11
- 2. How To Configure Amazon EC2 Load Balancer ii | P a g e Create – Creation Status – Successful .........................................................................................12 LoadBalancer – DNS Name................................................................................................................12 LoadBalancer – Test – First Request...............................................................................................12 LoadBalancer – Test – Second Request...........................................................................................12 Load Balancer – Instance Status.........................................................................................................13 Load Balancer – Availability Configured..............................................................................................13 Load Balancer – Remove Subnet........................................................................................................14
- 3. How To Configure Amazon EC2 Load Balancer 1 | P a g e Overview The purpose of thisdocumentis to configure AmazonAWSLoadBalancer with2 nodes(instance).Inthis guide we will install apahce2 webserver on both the nodes to test the availability. The main purpose of loadbalancer is service high availability. Applies To Amazon EC2 Instance Pre-requisites A minimum of 2 EC2 instances have to be running. In this document we would be configuring Linux Operating System. Launch Instance Launch 2 instances of a Linux Operating System and start the instance. System Update Loginwiththe public IP address and update the operating system packages. Run the below command. sudo yum update Node #1 – OS Packages Update
- 4. How To Configure Amazon EC2 Load Balancer 2 | P a g e Node #2 – OS Packages Update NTP Configuration Nextstepisto ensure NTPis configuredandTime serverisenabledtoverifyrunthe below commandon both nodes. cat /etc/ntp.conf | grep ^server
- 5. How To Configure Amazon EC2 Load Balancer 3 | P a g e System Date Time Next step is to ensure date and Time on both nodes are in sync and are set to same timezone (UTC). Install – Web Server After updating operating system “install web server”, to install the webserver group run the below command on both the nodes (instances). yum groupinstall -y "Web Server"
- 6. How To Configure Amazon EC2 Load Balancer 4 | P a g e Webserver – Index File Create a new “index.html” file in “/var/www/html” directory to create run the below command, run on both the nodes. cd /var/www/html touch index.html chmod 755 index.html Add Node #1 – Content Edit the “index.html” and a line to be displayed upon request from the browser. <HTML> <BODY> <H1> This is message is from node ...... <i> One </i> </BODY> </HTML> Add Node #2 – Content Edit the “index.html” and a line to be displayed upon request from the browser. <HTML> <BODY> <H1> This is message is from node ...... <i> Two </i> </BODY> </HTML>
- 7. How To Configure Amazon EC2 Load Balancer 5 | P a g e LoadBalancer The purpose of load balancer is to ensure service is Load Balancer – Create LoadBalancer Navigate to “Network & Security Load Balancers” and click on “Create Load Balancer” button. Load Balancer – Definition Define LoadBalancer Name In this step you need to define the loadbalancer name and Create LB inside (which inside network).
- 8. How To Configure Amazon EC2 Load Balancer 6 | P a g e Create – Internal LoadBalancer This option is to enable the loadbalancer only within the internal network. Ideally we configure load balancer to the internet facing ones. Hence we would not choose the option. Create – Enable advanced VPC Configuration – Select Subnets This option is to enable the loadbalancer available to other availability zones and choose other zonesif you need configure for higher availability.
- 9. How To Configure Amazon EC2 Load Balancer 7 | P a g e Create – Enable advanced VPC Configuration – Selected Subnets Choose the availability zones from different subnets, if needed for higher availability. Verify – Security Group In this guide,we are configuringhttpdservice,we needto ensure thatport 80 is openfrom the security groups.
- 10. How To Configure Amazon EC2 Load Balancer 8 | P a g e Create – Assign Security Group Choose existing security groups or create new security group, if you opt to choose create new security group ensure Port “80” rule is added. Create – Configure Security Settings In this guide we are configuring simple Load balancer without security feature. In order to configure security you could configure HTTPS or SSL protocol for secured connections.
- 11. How To Configure Amazon EC2 Load Balancer 9 | P a g e Create – Configure Health Check Type of protocol “HTTP” and on port “80” and file “/index.html” that would be verified. Create – Configure Health Check - Advanced Inthissectionyouneedconfigureloadbalancerparameters,suchasResponseTimeout,intervalandother parameters.
- 12. How To Configure Amazon EC2 Load Balancer 10 | P a g e Create – Configure Health Check - Advanced Nextstepwouldbe addthe EC2 instancesintothe loadbalancer.Clickonthe nodes thathasto be part of the load balancer. Create – Add Tag Next step would be add tag to the loadbalancer.
- 13. How To Configure Amazon EC2 Load Balancer 11 | P a g e Create – Review Review the loadbalancer and click on “Create” button. Create – Creation Status – Progress Upon clicking “Create” button; Loadbalancer creation progress is displayed.
- 14. How To Configure Amazon EC2 Load Balancer 12 | P a g e Create – Creation Status – Successful After configuring the loadbalancer, loadbalancer will be created. LoadBalancer – DNS Name After creating loadbalancer successfully, DNS Name will be associated. LoadBalancer – Test – First Request Launch the DNS Name from the browser; the request is fetched from node One. LoadBalancer – Test – Second Request Launch the DNS Name from the browser; the request is fetched from node Two.
- 15. How To Configure Amazon EC2 Load Balancer 13 | P a g e Load Balancer – Instance Status From the load balancer choose the “effonelb”, click on the “Instances” to know the status of nodes. s Load Balancer – Availability Configured From the load balancer choose the “effonelb”, click on the “Instances” to know the availability zones configured.
- 16. How To Configure Amazon EC2 Load Balancer 14 | P a g e Load Balancer – Remove Subnet To remove zone(s) from the configured availability zones, click on “Remove from Load Balancer”.