Contents
What is the minimum number of AZs required to create load balancer?
two AZs
Each Subnet must have a CIDR block with at least a /27 bitmask and has at least 8 free IP addresses, which ELB uses to establish connections with the back-end instances. For High Availability, it is recommended to attach one subnet per AZ for at least two AZs, even if the instances are in a single subnet.
What is the minimum number of availability zones required when creating an application load balancer?
two Availability Zone
Subnets for your load balancer. When you create an Application Load Balancer, you must specify one of the following types of subnets: Availability Zone, Local Zone, or Outpost. You must select at least two Availability Zone subnets.
What is least connection load balancing?
Least Connection load balancing is a dynamic load balancing algorithm where client requests are distributed to the application server with the least number of active connections at the time the client request is received.
Can I create my application load balancer in a single Availability Zone?
You can set up your load balancer in EC2-Classic to distribute incoming requests across EC2 instances in a single Availability Zone or multiple Availability Zones.
How does load balancing work in a VCN?
The Load Balancing service enables you to create a public or private load balancer within your VCN. A public load balancer has a public IP address that is accessible from the internet. A private load balancer has an IP address from the hosting subnet, which is visible only within your VCN.
What do I need to know about load balancing?
The Load Balancing service assigns it a private IP address that serves as the entry point for incoming traffic. When you create a private load balancer, the service requires only one subnet to host both the primary and standby load balancers. The load balancer can be regional or AD-specific, depending on the scope of the host subnet.
When does the load balancer return an error code?
Client errors are generated when requests are malformed or incomplete. These requests were not received by the target, other than in the case where the load balancer returns an HTTP 460 error code. This count does not include any response codes generated by the targets.
How many subnets does a load balancer need?
If your region includes multiple availability domain s, a public load balancer requires either a regional subnet (recommended) or two availability domain -specific (AD-specific) subnets, each in a separate availability domain.