On 27/04/2015 2:36 p.m., Hierony Manurung wrote: > Dear Fellow, > I want to implement Failover in My system, I have 3 Squid proxy servers right now. they are : > > - Child (172.30.20.200/16) # receive request, and forward it either to Parent1 or Parent2 > - Parent1 (172.31.20.201/16) > - Parent2 (172.31.20.204/16) > > I use Mikrotik to connect all the servers, and they have been connected and they can work together (distributed caching). For the caching algorithm, I use round-robin algorithm. > How can i implement Failover in my system?, so that when Child proxy is down/crash the request move to another Parent proxy. You can't with this setup. The Child proxy is a bottleneck and the failover copes with either of the Parents being down but not the Child. If you are going to have a failover from Child to Parent, then you may as well have all three proxies operating in a "flat"/horizontal design as siblings all independently able to connect upstream. The failover logics in that design is configured into the Mikrotik somehow (I dont know how exectly though sorry). Or in a PAC file given to the clients. The design you have with a single router acting as hub for clients and three proxies in a 2-tier design sounds like you have traffic travelling over the same router 2-3 times on its way to the Internet (and same for the responses). That will be cutting your available router bandwidth by as much as 60%. You can probably double your bandwidth by using two routers and two NICs on each proxy - without changing the uplinks themselves. Like so: clients-> router1 (load balancing)->proxies->router2->Internet Amos _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
