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Inlab Balance & BalanceNG 基于GPL的TCP代理以及负载均衡器
Inlab Balance & BalanceNG 基于GPL的TCP代理以及负载均衡器
http://www.inlab.de/balanceng.html
What is BalanceNG® ?
BalanceNG (Balance Next Generation) is a Software IP Load Balancing Solution utilising its own network stacks and functionality. It runs on Linux-x86 (2.4 and 2.6 kernels distribution independent) and Solaris (9/10).
BalanceNG Features
Layer 2 (Ethernet) based software load balancer.
Running under Linux (Using the PF_PACKET socket API) and Solaris (STREAMS).
Session persistence based on client address and optional source port.
Backup targets (hosts) specifiable in case of failure of all primary targets.
Health checking via: PING, TCP Socket Open and freely customizable UDP Health Check Agent.
Generic external health check script interface.
Alert and "Upalert" notification script interface.
Health check agent "bngagent" supplied in source code.
Distribution methods: Round Robin, Simple Weighted Round Robin, Random, Client Address Hashing and "Least Resource" based on agent supplied information.
Direct Server Return (DSR) operation support.
Unchanged client addresses on IP-level.
Small, very fast and reliable.
Simple to implement and administer.
Simple "init script style" arguments like "start", "stop" and "status" (and "control" for interactive configuration and control ).
Interactive communications mode with command line editing.
Pcap packet dumping with automated dumpfile rotation (e.g. to implement a "transparent forensic logging bridge").
Multi-node High Availability capability using standard VRRP (Virtual Router Redundancy Protocol).
Also capapable to run as an "addon" VRRP daemon without LB.
"All service load balancing" based on client IP address enables most protocols to be supported (e.g. active FTP, RTSP/RTP/RTCP, DNS etc.).
SNMP support integrating into Net-SNMP with the BalanceNG MIB.
Session table with up to 8 million concurrent sessions (on 512MB memory).
Full support of session table state replication / session synchronization between VRRP master and backup.
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