[CentOS] Load balancing...
bluethundr at gmail.com
Mon Mar 7 04:40:20 UTC 2011
an interesting choice for low cost hardware load balancing appliances
is coyote point
however for my purpose open and free HAProxy remains best choice!!
On Sun, Mar 6, 2011 at 9:22 PM, Charles Polisher <cpolish at surewest.net> wrote:
> m.roth at 5-cent.us wrote:
>> A warning: round robin can be problematical.
> Amen. Consider what happens with round-robin DNS when one host
> stops working. Round-robin DNS will hand out the address of the
> failed host just as often as it did when it was all working.
> Some clients (applications) will attempt to use another one
> of the IP addresses they get from the DNS, some won't.
> A load balancer checks the health of the hosts and doesn't^Wshouldn't
> route traffic to hosts that aren't serving requests.
> There are other considerations for round-robin DNS. As
> you'll want to make the TTL's very small, you must expect
> much more DNS traffic, so expect more load on the DNS.
> Charles Polisher
> CentOS mailing list
> CentOS at centos.org
gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B
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