wok-6.x view keepalived/description.txt @ rev 23344
updated perl-http-date (6.01 -> 6.05)
| author | Hans-G?nter Theisgen |
|---|---|
| date | Tue Mar 31 09:16:01 2020 +0100 (2020-03-31) |
| parents | |
| children |
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1 The main goal of this project is to provide simple and robust facilities
2 for loadbalancing and high-availability to Linux system and Linux based
3 infrastructures. Loadbalancing framework relies on well-known and widely
4 used Linux Virtual Server (IPVS) kernel module providing Layer4 loadbalancing.
5 Keepalived implements a set of checkers to dynamically and adaptively maintain
6 and manage loadbalanced server pool according their health. On the other hand
7 high-availability is achieved by VRRP protocol. VRRP is a fundamental brick for
8 router failover. In addition, Keepalived implements a set of hooks to the VRRP
9 finite state machine providing low-level and high-speed protocol interactions.
10 In order to offer fastest network failure detection, Keepalived implements BFD
11 protocol. VRRP state transition can take into account BFD hint to drive fast
12 state transition. Keepalived frameworks can be used independently or all
13 together to provide resilient infrastructures.
15 Keepalived implementation is based on an I/O multiplexer to handle a
16 strong multi-threading framework. All the events process use this I/O
17 multiplexer.