Server Load Balancing course description
This two-day Server Load Balancing course introduces the concepts of SLB from the reasons to implement, through the basics and then onto details studies of load distribution, health checks, layer 7 switching and Global SLB.
What will you learn
Explain packet paths when implementing SLB.
Recognise the impact of different topologies.
Evaluate SLB load distribution methods.
Describe how load balancers can improve security.
Explain how GSLB works.
Server Load Balancing course details
Who will benefit:
Anyone working with SLB.
Prerequisites:
None.
Duration
2 days
Server Load Balancing course contents
Introduction
Concept, reasons, benefits, alternatives. Other
features: Security, Caching.
SLB concepts
Architectures, Virtual servers, real servers, Virtual
IP address, health checks. DNS load balancing.
Packet walk using SLB.
Load balancing
6 modes of bonding and load balancing without
SLB. ISP load balancing. Health. Distribution
policies: Round Robin, least connections,
weighted distributions, response time, other
variations. Persistent versus concurrent.
Layer 4 switching
L2 SLB, L3 SLB, single arm SLB, DSR, more
packet walking, TCP versus UDP, Port numbers.
Layer 7 switching
Persistence. Cookie switching, Cookie hashing,
Cookie insertion, URL switching, URL Hashing,
SSL.
Health checks
Layer 3: ARP, ping. Layer 4: SYN, UDP. Layer 7:
HTTP GET, Status codes, HTTP keepalives,
content verification, SSL. Other application
keepalives. What to do after failure and recovery.
Security
DOS attack protection, SYN
attack protection, Rate limiting: connections,
transactions. SSL offload.
Redundancy
Hot standby, Active standby, Active active.
Stateful, stateless. VRRP, STP.
GSLB
Anycasting. DNS, TTL, DNS load balancing,
problems with DNS load balancing,. HTTP
redirect, health, thresholds, round trip times,
location.