On 17/03/2015 07:59, Alfredo De Luca
wrote:
Nothing unless you are using apache load balancer modules as a front end ... (mod_proxy_balancer)Hi all.
Any clue on this?On 15/03/2015 9:30 PM, "Alfredo De Luca" <alfredo.deluca@xxxxxxxxx> wrote:
Hi all.
I ve never done this before so I am asking best practice/info/docs of
how to have 2 apache web servers in load balancing.
- Which httpd module do I have to load in the http conf?
I haven't played with F5 load balancers - but use the rival product Brocade/SteelApp/StingRay/Zeus- I was reading that I have to have a web load balancer on top of
them? Is it necessary? Can they accept requests from a cisco /F5 load
balancer?
traffic managers - which I think the F5s do the same thing as (just not as user friendly)
so they should be able to do the job (I know we looked into it when we bought the ZTMs)
? HTTP is stateless - if you have poorly written backends which require requests to go the backend- What about persistent connection?
you should be able to use sticky sessions - but this is bad as you lose resilience (one of the main
reason for load balancing backends!)
Load balancing MySQL can be trickier - easier if mainly RO connections (you can round robin requests- Also we''ll have a mySQL server? Any more info about this?
to a large number of clones - or usually slaves to a single master) but harder if read/write
- you can look at mysql cluster or master-master MySQL (galera)
Read write you can use master + multiple slaves - but need to tag a process/session/user as
requiring access to master if a write happens for an unspecified length of time!
Thanks in advance
--
Alfredo
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