{"id":4766,"date":"2019-11-18T09:56:22","date_gmt":"2019-11-18T09:56:22","guid":{"rendered":"https:\/\/cloudkul.com\/blog\/?p=4766"},"modified":"2025-02-07T10:46:30","modified_gmt":"2025-02-07T10:46:30","slug":"how-to-setup-aws-network-load-balancer","status":"publish","type":"post","link":"https:\/\/cloudkul.com\/blog\/how-to-setup-aws-network-load-balancer\/","title":{"rendered":"How to setup AWS Network Load Balancer"},"content":{"rendered":"

INTRODUCTION<\/strong><\/h2>\n

A Network Load Balancer functions at the fourth layer of the Open Systems Interconnection (OSI) model. It can handle millions of requests per second.<\/p>\n

After the load balancer receives a connection request, it selects a target from the target group for the default rule.<\/p>\n

It attempts to open a TCP connection to the selected target on the port specified in the listener configuration.<\/p>\n

STEPS TO SET UP A<\/strong> NETWOR<\/strong>K<\/strong> LOAD BALANCER<\/strong><\/h2>\n

Step 1:<\/strong><\/h3>\n

Create two EC2 instances<\/a>.<\/p>\n

Step 2:<\/strong><\/h3>\n

Now that EC2 instances are created, install the Apache web server on both of them.<\/p>\n

Execute the following commands on both your instances to install Apache:<\/p>\n

sudo apt update \nsudo apt install apache2\nsystemctl status apache2<\/pre>\n
This should give you an output of status showing active.<\/p>\n
Step 3:<\/strong><\/h3>\n
Now when you visit the public IP of your instances you should see a page that says \u201cWelcome to Apache\u201d.<\/p>\n
Since we need to differentiate between the two servers, let us change the display to \u201cWelcome to Apache \u2013 Server1\u201d and the other to \u201cWelcome to Apache \u2013 Server2\u201d.<\/p>\n
Go to the directory:<\/p>\n
cd \/var\/www\/html\nsudo vim index.html<\/pre>\n
Change the H1 tag from \u201cWelcome to Apache\u201d to \u201cWelcome to Apache \u2013 Server1\u201d on one instance and \u201cWelcome to Apache \u2013 Server2\u201d on the other.<\/p>\n
Step 4:<\/strong><\/h3>\n
Create a Network Load Balancer.<\/p>\n
In the navigation pane, under LOAD BALANCING, choose load balancer. Choose Create load balancer. On the Select Load Balancer type page, choose Create Network Load Balancer.<\/p>\n
\"Load<\/a><\/p>\n
Step 5:<\/strong><\/h3>\n
Configure the load balancer, and type the name. For Scheme either select Internet-facing or Internal.<\/p>\n
In this case, I\u2019ve chosen internet-facing. Internet-facing routes requests from clients to the target over the internet.<\/p>\n
\"Load<\/p>\n
For Listeners, the default is to accept TCP traffic on port 80. In case you want to add another listener, you can choose Add Listener.<\/p>\n
Step 6:<\/strong><\/h3>\n
For configuring the Availability Zone, select the AWS VPC<\/a> that you\u2019ve used to create your EC2 instances.<\/p>\n
If you\u2019ve created your instances in different Availability Zones, then select those availability zones and subnet for that particular Availability Zone.<\/p>\n
\"Load<\/p>\n
Step 7:<\/strong><\/h3>\n
Select Next: Configure Security Settings.\u00a0<\/strong>You\u2019ll see a warning as shown in the picture below. But it\u2019s just a warning and you can ignore it.<\/p>\n
In my case, I am allowing TCP traffic on port 80. You can also allow traffic on TLS\u00a0 port 443 to get a secure TCP connection and accordingly security settings will be configured.<\/p>\n
\"Load<\/a><\/p>\n
Step 8:<\/strong><\/h3>\n
For Target Group, keep the default setting a new target group. For Name, type in the name.<\/p>\n
Set Protocol and Port as required.<\/p>\n
\"Load<\/a><\/p>\n
Keep the health checks with the default settings.<\/p>\n
\"Load<\/a><\/p>\n
Step 9:<\/strong><\/h3>\n
Click on Next: Register Targets<\/p>\n
\"Load<\/a><\/p>\n
Register your instances with the target group and click on Next:\u00a0<\/strong>Review your Load Balancer and then finally click on Create.<\/p>\n
\"Load<\/a><\/p>\n
Step 10:<\/strong><\/h3>\n
Click on Create, you\u2019ll see that your Load Balancer is getting provisioned.<\/p>\n
Now copy your Load Balancer\u2019s DNS Name and paste it on a browser. The Apache web page will be displayed.<\/p>\n
\"Load<\/a><\/p>\n
The traffic will be handled by this network load balancer and will be distributed accordingly on both EC2 instances.<\/p>\n
In case of any help or query, please\u00a0contact<\/a>\u00a0us\u00a0or raise a\u00a0ticket<\/a>.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"
INTRODUCTION A Network Load Balancer functions at the fourth layer of the Open Systems Interconnection […]<\/a><\/p>\n","protected":false},"author":27,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[32],"tags":[16,153,238],"yoast_head":"\nHow to setup AWS Network Load Balancer - Cloudkul<\/title>\n<meta name=\"description\" content=\"Here in this blog, we will discuss about Setting up Network Load Balancer in AWS. 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