ELB best practices

ELB best practices are as follows:

• While defining a load balancer, it is recommended you identify target AZs and target groups
• Use multiple AZs in the ELB as it provides high availability and fault tolerance
• It is highly recommended that a security group for the ELB opens only required ports and protocols
• Always configure health checks for the ELB on appropriate ports and protocols
• If the ELB is created for a web server, use the HTTP/HTTPS protocol in health checks instead of the TCP protocol
• Do not create internet-facing ELBs for internal needs
• Use SSL security certificates to encrypt and decrypt HTTPS connections where possible
• If a heavy traffic spike is expected on a given schedule, contact AWS support and ask them to pre-warm the ELB
• Use ELB deletion protection from accidental deletion
• Use cross-zone load balancing in a Classic Load Balancer for evenly distributing the load across all EC2 instances in associated AZs
• Carefully enable connection draining on ELBs associated with...