11-ELB

type
status
date
slug
summary
tags
category
icon
password
  1. ELB
    1. Elastic Load Balancer
    2. across ec2 instances
    3. types
      1. application load balancer
        1. http / https
        2. at layer 7
        3. intelligent
      2. network load balancer
        1. layer 4
        2. performance
      3. gateway load balancer
        1. layer 3
        2. inline virtual appliance load balancing
      4. classic load balaner
        1. use in dev / test
  1. health checks
  1. OSI
    1. open system interconnection model
  1. ALB
    1. listeners
    2. target group
    3. only support http/https
notion image
  1. NLB
    1. can use for decrypt tls
  1. CLB
    1. X-Forwarded-For: get the use info ip
    2. 504: gateway timeout
  1. Sticky Sessions
    1. forward request to the same ec2
    2. alb is supported
    3. at target group level
    4. disable will close connections immediately to the detached ec2
  1. deregistration delay
    1. clb: connection draining
    2. keep existing connection if ec2 is unhealthy
    12-Monitoring10-Route 53