How to create an application load balancer?

To create an Application Load Balancer, follow the below steps:

Step 1: Login to your account.

Step 2: Navigate to Services and then click on My Services.

Step 3: Click on your project.

Step 4: Navigate to Networks and then click on Load Balancer.

Step 5: Click on Create Load Balancer.

Step 6: Select Application Load Balancer and click Next.

Step 7: Enter the Basic Details and click Next.

Field	Description
Name*	Name of the Load Balancer
Description	Description of the Load Balancer
IP Address type*	Select IP address type from IPv4 and Dualstack
Subnet*	Select a subnet from the available networks.

Step 8: Enter the Listener Details and click Next.

Note: If you do not want to create a listener, disable the toggle and click Next.

Field	Description
Listener Name*	Enter the name of the Listener.
Listener Description	Enter the description of the Listener.
Listener Protocol*	Select a protocol for the listener from the below options: HTTP HTTPS TERMINATED_HTTPS
Listener Port*	The protocol port number for the resource. The default is 1.
Client Data Timeout (in ms)	Enter client inactivity timeout in milliseconds. The default is 50000.
TCP Inspect Timeout (in ms)	Enter time, in milliseconds, to wait for additional TCP packets for content inspection. The default is 0.
Member Connect Timeout (in ms)	Enter member connection timeout in milliseconds. The default is 5000.
Member Data Timeout (in ms)	Enter member inactivity timeout in milliseconds. The default is 50000.
Allowed CIDRs	Enter a list of IPv4, IPv6 or mix of both CIDRs.
Connection Limit*	The maximum number of connections permitted for this listener. Default value is -1 which represents infinite connections.
TLS Cipher String*	Enter List of ciphers in OpenSSL format and it should be colon-separated.
Insert Headers	Select the headers to insert into the request before it is sent to the member from the below option: X-Forwarded-For X-Forwarded-Port X-Forwarded-Proto

Step 9: Enter Pool Details, Server Monitor Health details and click Next.

Note:

1. If you have not created

Listener, you will not be able to create Pool and Monitor.

2. If you have not created Pool, you will not be able to create Monitor.

3. If you do not want to create Pool and Monitor disable the toggle and click Next.

Field	Description
Pool Name*	Enter the name of the Pool.
Pool Description	Enter the description of the pool.
Pool Algorithm*	Select the load balancing algorithm for the pool from the below options: Least connections Round robin Source IP
Pool Protocol*	Select a protocol for the pool from the below options: HTTPS PROXY PROXYV2 TCP
TLS Enabled	Select YES to enable TLS, enabling it will help member to use TLS encryption. Select NO to disable TLS.
TLS Cipher String	Enter List of ciphers in OpenSSL format and it should be colon-separated.
Session Persistence	Select a JSON object specifying the session persistence for the pool from the below options: HTTP Cookie APP Cookie Source IP
Cookie Name*	Enter the name of the cookie to use for session persistence.
Monitor Name*	Enter the name of the Health Monitor.
Monitor Protocol*	Select a protocol for the health monitor from the below options: HTTP HTTPS PING TCP TLS-HELLO UDP-CONNECT SCTP
Max Retries Down*	Enter the number of allowed check failures before changing the operating status of the member to ERROR. A valid value is from 1 to 10. The default is 3.
Delay (in sec.)*	Enter the interval, in seconds, between health checks. The default is 10.
Max Retries*	Enter the number of successful checks before changing the operating status of the member to ONLINE. The default is 1.
Timeout (in sec.)*	The time, in seconds, after which a health check times out. The default is 5.
HTTP Method	Select the HTTP method that the health monitor uses for requests from the below options: GET HEAD POST PUT DELETE TRACE OPTIONS PATCH CONNECT
Expected Codes*	Enter the HTTP status codes expected in response from the member to declare it healthy. The default is 200.
URL Path*	Enter the HTTP URL path of the request sent by the monitor to test the health of a member. Must be a string that begins with a forward slash. The default URL path is /.

Step 10: Enter Backend Servers details and click Next.

Note:

1. If you have not created Pool, you will not be able to create Backend Servers.

2. If you do not want to create Backend Servers disable the toggle and click Next.

Field	Description
Add Servers*	Select the servers from the dropdown.
Specific IP	Enter the specific IP you want to Add and click on Add button.
Name	Name of the server.
IP Address	IP address of the server.
Associated Subnet	Name of the subnet, associated with the server.
Specific Port*	Enter the specific port you want to add.
Monitor Address	Enter an alternate IP address used for health monitoring a member.
Monitor Port	Enter an alternate protocol port used for health monitoring a member.
Weight	Enter the weight of a member determines the portion of requests or connections it services compared to the other members of the pool.

Step 11: Review your load balancer details and click on Create button.