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PublicLoadBalancer


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Resource Overview​

A Load Balancer efficiently distributes incoming network traffic across a group of backend resources or servers. Azure Load Balancer operates at Layer 4 of the OSI (Open Systems Interconnection) model, serving as a single point of contact for clients. The Load Balancer distributes inbound traffic arriving at its front end across the backend pool instances. This distribution follows the configured load balancing rules and health probes. Backend pool instances can be Azure Virtual Machines or instances from a Virtual Machine Scale Set. A Public Load Balancer provides outbound connectivity for virtual machines within a virtual network by translating private IP addresses to public IP addresses. The Public Load Balancer is also used to distribute internet traffic to the VMs.

Associated Resources​

Parent Resource​

Connected Resources​

Resource Setting Values​

  • sku : The SKU to select the scale and features of the Azure Load Balancer - standard, Basic

  • public_lb_frontend_ip_config

  • virtual_network_name : The name of Virtual Machine which forward traffic

  • backend_pool : Name of the Load Balancer's backend pool

    • linked_virtual_machine_names : Names of the virtual machines to which the Load Balancer will route traffic

  • health_probe

    • protocol : The type of Backend endpoint protocol which health probe uses - Http, Https, Tcp
    • port : The port which health probe uses to check backend endpoint - 0 ~ 65535
    • request_path : The path to use for GET when using Http(s) probes
    • interval_in_seconds : Specifies the number of seconds between checking response of the backend pool instance by health probes - 5 ~ 2147483646

  • rule

    • protocol : The transport protocol for the external endpoint - Tcp, Udp, All
    • frontend_port : The port for the external endpoint, Range between 0 and 65534 - 0 ~ 65534
    • backend_port : The port used for internal connections on the endpoint, Range between 0 and 65535 - 0 ~ 65535
    • disable_outbound_snat : Enable SNAT for outbound connections - true, false
    • frontend_ip_configuration_name : The name of Public Load Balancer Frontend IP Configuration
    • backend_pool_name : The name of the Backend Address Pool to which the Load Balancer will forward traffic

  • nat_rule

    • protocol : The transport protocol for the external endpoint - Tcp, Udp, All
    • frontend_port : The port for the external endpoint, Range between 0 and 65534 - 0 ~ 65534 - 0 ~ 65534
    • backend_port : The port used for internal connections on the endpoint, Range between 0 and 65535 - 0 ~ 65535
    • frontend_ip_configuration_name : The name of Public Load Balancer Frontend IP Configuration

  • outbound_rule

    • protocol : The transport protocol for the external endpoint - Tcp, Udp, All
    • frontend_ip_config_name: The name of Public Load Balancer Frontend IP Configuration
    • backend_pool_name: The name of the Backend Address Pool to which the Load Balancer will forward traffic

  • tag : Tag to categorize resources - up to 512 characters, key:value

Reference Materials​