Very interesting HOWTO, thanks for your contribution
In ZLB v3.03 there is a new property, files where you can add your own
commands
/usr/local/zenloadbalancer/config/zlb-stop
/usr/local/zenloadbalancer/config/zlb-start
regarding your HOWTO:
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
this iptables line can be added to
/usr/local/zenloadbalancer/config/zlb-start. All you include in this file
will be executed in "/etc/init.d/zenloadbalancer start", once the
interfaces are UP.
Regards
2013/12/6 Dima Polyakov <[email protected]>
> Hi, guys!
>
>
>
> Here is a somewhat a short manual how to set up Zen as L4 DNAT load
> balancing. There are not much information available on how to do it
> properly and I have a very limited knowledge of Linux systems (I’m a
> Windows guy; last time I worked with Unix/Linux systems was in 1998 on
> FreeBSD), so some steps might be different. I hope one day it all will be
> integrated/automated/simplified…
>
>
>
> Comments and corrections are welcome!
>
>
>
> So, here is my environment:
>
> My network gateway: 10.10.0.254
>
> Idea is to have a web farm to run on a different subnet, but also have
> access to each server individually from my network (10.10.0.xxx). All
> networks are connected to the same switch.
>
> Web 1: 10.10.0.71 (no default gateway), 172.168.0.1 (GW: 172.168.0.254)
>
> Web 2: 10.10.0.72 (no default gateway), 172.168.0.2 (GW: 172.168.0.254)
>
> Web 3: 10.10.0.73 (no default gateway), 172.168.0.3 (GW: 172.168.0.254)
>
>
>
> Install Zen on Hyper-V. Add 2 legacy network adapters.
>
> During Zen setup set eth0: 10.10.0.80 -> this will be IP for Zen
> management (https://10.10.0.80:444), default GW: 10.10.0.254
>
> Once Zen is installed (make sure you remember root password!), login to
> web interface and set in settings/interfaces:
>
> * eth1 - 172.168.0.254 (this will be a gateway for backend computers)
>
> * eth0:1 - 10.10.0.70 (this is farm IP)
>
> Once it is all set you should be able to ping from web servers gateway ip
> 172.168.0.254 and each other by 172.168.0.x
>
> Also, you should ping 10.10.0.254 and any computer on that network as well.
>
>
>
> Now, make a farm with IP 10.10.0.70, l4xnat profile, DNAT, no IP
> persistence
>
> Add web sites: 172.168.0.1, 172.168.0.2, 172.168.0.3
>
>
>
> From this point you should be able to go to 10.10.0.70 with your web
> browser and hit any of your web servers. With DNAT you should be able to
> get source IP as well.
>
>
>
> To set up an ability for your web servers to get to the internet, you will
> need to make a trick:
>
> - In hyper-v open Zen machine
>
> - You will see a login screen. Login as: root, password: your
> root password from installation
>
> - Type: vi /etc/rc.local
>
> - Right before line: exit 0, type: iptables -t nat -A
> POSTROUTING -o eth0 -j MASQUERADE
>
> - To save and exit type: :wq
>
>
>
> Now, you should be able to access Internet from web servers.
>
>
>
> Important! You should address this error for ASP.NET web farm and load
> balancer:
>
> Validation of viewstate MAC failed. If this application is hosted by a Web
> Farm or cluster, ensure that <machineKey> configuration specifies the same
> validationKey and validation algorithm. AutoGenerate cannot be used in a
> cluster.
>
>
>
> You can get this error if you have a submit button that was rendered on
> web1 but ‘submit’ went to web2. More about it you can read here:
> http://www.hackandsecure.com/2010/07/07/solution-for-validation-of-viewstate-mac-failed/
>
>
>
> My preferred solution is just make a machine key the same for each copy of
> website. In web.config in system.web add a key machineKey. You can generate
> it from here:
> http://www.eggheadcafe.com/articles/GenerateMachineKey/GenerateMachineKey.aspx
>
> IP persistence does not work for me because I want all requests to be
> evenly balanced between servers.
>
>
>
> That is basically all you need to run ZLB for ASP.NET web farm.
>
>
>
> Happy coding!
>
> Dima
>
>
>
>
> ------------------------------------------------------------------------------
> Sponsored by Intel(R) XDK
> Develop, test and display web and hybrid apps with a single code base.
> Download it for free now!
>
> http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk
> _______________________________________________
> Zenloadbalancer-support mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support
>
>
--
Load balancer distribution - Open Source Project
http://www.zenloadbalancer.com
Distribution list (subscribe): [email protected]
------------------------------------------------------------------------------
Sponsored by Intel(R) XDK
Develop, test and display web and hybrid apps with a single code base.
Download it for free now!
http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk
_______________________________________________
Zenloadbalancer-support mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support
