How to Create a Listener in Kubernetes Load Balancer?

To create a listener in Kubernetes load balancer, follow the steps given below:

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 Kubernetes and then click on K8s Load Balancer.

Step 5: Click on the load balancer name for which you want to create a listener.

Step 6: Go to Listener tab and click on Create Listener.

Step 7: Enter the Listener Details and click Next.

Field	Description
Name	Enter the name of the Listener.
Description	Enter the description of the Listener.
Protocol	Select a protocol for the listener from the below options: HTTP HTTPS TCP UDP SCTP
Port*	The protocol port number for the resource.
Client Data Timeout	Enter client inactivity timeout in milliseconds. The default is 50000.
TCP Inspect Timeout	Enter time, in milliseconds, to wait for additional TCP packets for content inspection. The default is 0.
Member Connect Timeout	Enter member connection timeout in milliseconds. The default is 5000.
Member Data Timeout	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.
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 8: Enter Pool Details and click Next.

Note: If you do not want to create Pool and Monitor, select No and click Create Listener.

Field	Description
Name	Enter the name of the Pool.
Description	Enter the description of the pool.
Algorithm	Select the load balancing algorithm for the pool from the below options: Least connections Round robin Source IP
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.

Step 9: Click on Add against the instance, you want to allocate as a member.

Step 10: Click on edit icon to enter the port number.

Step 11: Enter the Port number, click on save icon and press the Next button.

Step 12: Enter Health Monitor details and click Create Listener.

Note: If you do not want to create Monitor, select No and click Create Listener.

Field	Description
Name*	Enter the name of the Health Monitor.
Type*	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 (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 (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 /.