Load balancing solution for 2-3 web servers
i am looking for a solution for load balancing between 2-3 servers in the same datacenter. i saw the ACE 4710 but that seems expensive compared to the rest of the the cisco gear in that datacenter. anybody knows what would be an entry level load balancing solution (2-3 web servers)? thanks in advance.
the Ace appliance is the new generation and if you take the lowest license 1/2 Gig you should pay a lower price.
You can still buy the old generation.
This would be the CSS11501.
If you need SSL offload this comes by default with ACE but no the CSS.
CSS11501-K has the SSL offload feature.
Also note the appliance has many more features which can be turned on by simply adding a new license.
So, if your site grows and you require more functionalities or more BW, you won't need new hardware.
Gilles.
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thx
AnandDetails about using the reverse proxy plugin can be found here:
http://docs.sun.com/source/819-0902/rpp61.html
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Acrhitecture of network load balancing solution
i'm working on a setup that will transition our existing data center setup to a network load balancing solution. i'm far from understanding what components to use and how to approach the problem so any help would be very welcome. here is what we currently have:
1. 3 web servers (serverA, serverB, serverC)
2. 1 sql server
3. 2 layer two unmanaged switches
4. 1 cisco firewall
each one of the web servers runs a dedicated web app. what i would like is to replace serverA with a NLB cluster of 3 servers and replace serverB with another NLB cluster of 3 servers. serverC is not getting that much usage and it can stay as is.
i have looked at possible solution with Windows Server 2008 NLB and it seems that the best way to do it would be using multicasting which requires upgrading out switches. at the same time if would much more prefer to use hardware load balancing than Windows Server. so i looked at Cisco ACE 4710 appliance. however it seems that some of the cisco switches will also do load balancing. now i'm completely confused whether to upgrade the switches and use them for load balancing or use the ACE appliance. i would appreciate any advices and suggestions. also, any recommendations on breaking up the network using VLANs - if it is necessary with either one of the solutions or if there is some benefit. i guess i'm looking for a "best practices" solution...
any links or documents would be very welcomed.
thanks.thanks for your response. i think i'm going with ace 4710. now, as far as vlans go why would i need internet, dmz and internal vlan in my datacenter? i understand that this may be a bit off topic but what is really bugging me is this: with the current setup all of the web servers have 2 nics - one with public IP and one with private IP. same goes with the sql server. on web servers nics with private IPs are used for communicating with the database server. they could very well communicate using nics with public IPs but the person that set this up (i recently inherited it) was convincing me that with the existing setup "public" nics are not burdened with communication between web servers and database server. is this "correct" way of doing it?
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Folks:
I need to implement a load balancing solution pretty soon and I would like some ideas regarding topology, design and methodology.
This is what I have:
1.) Two 7600 Aggregation routers with 4500 L2 server farm switches hanging off of them in a looped topology.
2.) Load balancers (either an ACE module or an ACE appliance).
3.) 4 vlans with a cluster of DNS servers in one, a cluster of DHCP in another, and 2 application server clusters in the 3rd and 4th.
What I need to know is what approahes I can take regarding routing methodology, L2 adjacency, general approach, connectivity, etc.
I know this is a loaded question, but if I can get 2 or 3 complete solutions from the folks on this board, that would be awesome!
Im about to board aplane, so I cant respond to queries until about 3 hours or so.
Thanks!
VictorJason,
Quite simple....
content rule 1 (site1)
vip address xxx.xxx.xxx.xxx
port xx
prot tcp
url "//site.com/*"
advance-balance arrow-point cookies
no persistance
add service server1
add service server2
active
Second content:
content rule 2 (site2)
vip address xxx.xxx.xxx.xxx
port xx
prot tcp
url "//site2.com/*"
advance-balance arrow-point cookies
no persistance
add service server1
add service server2
add service server3
add service server4
active
Services for CSS:
Server1
ip address xyz.sss.ddd.ddd (ip address of web server1)
port xx
prot tcp
act
Server2
ip address xyz.sss.ddd.ddd (ip address of web server2)
port xx
prot tcp
act
Server3
ip address xyz.sss.ddd.ddd (ip address of web server3)
port xx
prot tcp
act
Server4
ip address xyz.sss.ddd.ddd (ip address of web server4)
port xx
prot tcp
act -
Load-balancing and fail-over between web containers and EJB containers
When web components and EJB components are run in different OC4J instances, can we achieve load-balancing and fail-over between web containers and EJB containers?
nullIt looks like there is clustering, but not loadbalancing available for rmi
from the rmi.xml configuration. The application will treat any ejbs on the
cluster as one-to-one look-ups. Orion will go out and get the first ejb
available on the cluster. See the docs on configuring rmi.xml (and also the
note below).
That is a kind-of failover, because if machine A goes down, and the
myotherAejbs.jar are on machine B too, orion will go out and get the bean
from machine B when it can't find machine A. But it doesn't go machine A
then machine B for each remote instance of the bean. You could also specify
the maximum number of instances of a bean, and as one machine gets "loaded",
orion would go to the next available machine...but that's not really
loadbalancing.
That is, you can set up your web-apps with ejbs, but let all of the ejbs be
remote="true" in the orion-application.xml file:
<?xml version="1.0"?>
<!DOCTYPE orion-application PUBLIC "-//Evermind//DTD J2EE Application
runtime 1.2//EN" "http://www.orionserver.com/dtds/orion-application.dtd">
<orion-application deployment-version="1.5.2">
<ejb-module remote="true" path="myotherAejbs.jar" />
<ejb-module remote="true" path="myotherBejbs.jar" />
<ejb-module remote="true" path="myotherCejbs.jar" />
<web-module id="mysite" path="mysite.war" />
... other stuff ...
</orion-application>In the rmi.xml you would define your clustering:
<cluster host="230.0.0.1" id="123" password="123abc" port="9127"
username="cluster-user" />
Tag that is defined if the application is to be clustered. Used to set up
a local multicast cluster. A username and password used for the servers to
intercommunicate also needs to be specified.
host - The multicast host/ip to transmit and receive cluster data on. The
default is 230.0.0.1.
id - The id (number) of this cluster node to identify itself with in the
cluster. The default is based on local machine IP.
password - The password configured for cluster access. Needs to match that
of the other nodes in the cluster.
port - The port to transmit and receive cluster data on. The default is
9127.
username - The username configured for cluster access. Needs to match that
of the other nodes in the cluster. -
Load balancing algorithm for groups in RZ12
Hello,
I would like to know the load balancing algorithm for groups defined in RZ12.
I know that log on groups for external connections are administered via SMLG and table RZLLICLASS.
I also know that RFC resources can be managed for RFC logon groups via RZ12.
Kind regards,
Peter
<removed_by_moderator>
Point awarding is at your discretion, but read and follow the "Rules of Engagement"
Edited by: Juan Reyes on Dec 3, 2010 10:21 AMHello!
Found this post while searching information about RFC and Logon Groups...
I have some mess in my head with SMLG functionality and RZ12. As I know SMLG we can use to distribute users to application server instances, it gives us good achievement in performance. With RZ12 we can distribute RFC connection of particular job for parallel execution on predefined application server. With SMQS and SMQR transaction we can set "Name of AS Group" to route RFC-execution on certain server or servers. But I have troubles with understanding. Imagine, we set up group 1 with 2 servers (name it RFC_GR1), and group 2 with another 2 servers (name it RFC_GR2). How could qRFC scheduler decide on which RFC server group (RFC_GR1 or RFC_GR2) distribute RFC-execution? How to interact "Name of AS Group" with RFC groups if we can set only one group? How could we distribute RFC-execution depending on our logon groups (smlg)? We would like to distribute RFC depending on SAP logon groups. Is it possible? Or do I compare apple and orange?
Regards,
Artem Ivashkin -
We're using SharePoint 2010, I'm the system admin for a SharePoint farm. We enabled SharePoint Search by adding a Search Service APplication. One of the crawl report timer job is failing every 5 minte with the error "Cannot connect to remote server".
After digging around, we found that the server running the timer job tries to connect to the SearchAdmin.svc on the index server, over HTTPS / port 32844 However, communication over SSL via a non default port is blocked by our firewall.
According to this article: https://technet.microsoft.com/en-us/library/cc262849.aspx the default is HTTP for communication
between web servers. How is it possible that it's trying to connect over SSL?Hi,
Quoted from
https://technet.microsoft.com/en-us/library/cc262849.aspx#ServiceApp :
You can change the protocol and port binding for each service application. On the Service Applications page in Central Administration, select the service application, and then click
Publish.
Here is an article for configuring Windows firewall port rules for SharePoint using PowerShell in case you need:
http://www.xylos.com/default.aspx?id=1050
Regards,
Rebecca Tu
TechNet Community Support
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact
[email protected] -
LOAD BALANCE BEHAVIOR FOR 7600 ON ETHERCHANNELS
Hi Everyone,
Currently I'm planning to implement ether-channels on 7600 routers, but there's something that's still not clear to me, regarding the load balancing behavior, for L2VPN and L3VPN.
I've read that 7600 in MPLS default load balance behavior is to take the SIP and DIP if present and the bottom of the stack label or the 5th label depending upon the number of labels on the stack. In l2VPN scenarios when ether-channel is used, if no IP traffic is present what is the default behavior of the etherchannel to calculate the load balancing hash function to select a given link on the bundle.
I'll appreciate any feedback regarding this.Hi Louis, you could set default routes on the ASA's with tracking, and use ospf downstream to inject the default route in to the network with default information originate - this will only advertise out a default route if it has it in the routing table. With SLA you can track internet reachability by IP SLA echo to something like 8.8.8.8. Both sides can advertise this in to the network, if one goes then there is one left. Just be mindful of the policies and NAT required, you will have to duplicate the rules on the ASA's. With the NAT you have to ensure, that outgoing traffic comes back in the same path it left so it doesn't break connections.
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Load Balancing 11i for both Intranet & Internet Access
Our current environment for 11i (11.5.5) is accessed only internally (via Intranet). We need to allow outside access (via Internet) also for self-service apps (ie. HR). Oracle Support/Metalink has stated that Load Balancing (note 148155.1) is the only supported method to have multiple (Apps Servers) systems access a single database. Could I get feedback from anyone who has implemented Load Balancing for 11i? Additionally if someone has implemented this for both intranet and internet access how has your company setup? Do the secondary server(s) from the Load Balancing note reside in the DMZ? And thus the primary app server and database reside inside the firewall? Thanks....
Hi,
We are using 6 middle tiers for internal access for intranet access and 2 middle tiers in External DMZ with only web server running for Extrenal Access over Internet for Self Service.
You Implement one Load Balancer for first 6 internal Middle Tiers with site level profiles pointing to Internal .
You implement second Load balancer for external 2 middle tiers with server level profile options for these two servers pointing to External Load balancer .
To check how to implement load balancer vsiit
http://becomeappsdba.blogspot.com/2006/09/configure-hardware-load-balancer-at.html
Wait for my next post in above blog site with step by step procedure to implement above solution External & Internal one
Atul Kumar
Oracle Apps DBA
http://teachmeoracle.com -
Load Balancing HTTP requests to ABAP App Servers options?
Looking at SAP Documentations, SAP recommends to use the Web Dispatcher to load balance HTTP requests to multiply ABAP App servers.
My question is that the only solution? or can we use hardware such as the F5 BigIP to perform the same job?
Any thoughts?In collaboration with SAP and SAP customers, F5 Networks has created a solution that delivers security, high availability, and improved performance for SAP web and portal technologies.
By deploying F5 Networks solutions with SAP NetWeaver, enterprises extend their control over their Network and Application traffic, and ensure the fast and secure delivery of their applications.
Benefits of F5 for SAP NetWeaver and Enterprise SOA
u2022 Cuts SAP Enterprise Portal login time by more than half for WAN users
u2022 Speeds document downloads
u2022 Reduces SAP server CPU utilization by 44%
u2022 Provides a 20x reduction in the number of SAP server-side connections
Further details, case studies and deployment guides on;
http://www.f5.com/solutions/applications/sap/netweaver/
F5 certification information on SAP Website
http://www.sap.com/partners/directories/SoftwareISVSolutions.epx?context=21B87D61C0F646A22B2A6DB254A010CA8C9C141B7529F029910FE6FF9EEEC5A701BF20EED61AC07159D98BAA068EBE1B8C5C7665EA2226374E942CF1D2A49D20AB1BFDFA1E0B68EC41E3058F04A85F105D5002CF1A11383C905D9FE5DDB951251A4B574B0BBE58309F67667A3B95877FEF85F1EF8B2C1A9F6FBA3BF5066D9534%7c01518B8BD6BF02F55A5A72E5947F2C45
Hope this helps. Thanks -
Dual Nic Load Balancing Solution
Hi,
I have a very peculiar situation. I'm currently a college student with access to an almost unlimited network. But the problem is that the network limits each IP to 30 Mb/s. I have 2 nics at my disposal and have tried two options so far:
bonding
two independent nic, let network manager take care of it
I set-up bonding and got it working, but it seems limited to roughly the same speeds as a single nic, but I can see the network being slit between the two nics evenly. This is what lead me to conclude that since I have a single ip address it's limiting it by IP not mac addresses. Here I might occasionally spike above the limits but not consistently.
With the network manager solution, Im basically thrown at random and can occasionally get higher than limited speeds. Specially with torrenting clients.
Are there any other useful options that I could explore, my next stop was a load balancing routing table but I want to see what you guys know before I keep trying weirder solutions.
Thanks in advancefalconindy wrote:There's no problem here. Please don't try to circumvent the policies your network admins are defining.
Oh come on, we'd all do the same thing if we could double our available bandwidth!
I really can't provide much of a solution. I did this back with my dialup days, many many eons ago. I used 2 phone lines bonded to get my 56k speeds doubled. It was a gigantic pain in the rear to set up back then, as well. However, I'm lucky to remember what I had for breakfast, so remembering how I did something 15+ years ago is pretty much out of the question.
I'm sure linux can do this, but I'm guessing one of the BSDs would have information about how to do this written up somewhere. This is right up BSD's alley. They have all kinds of load-balancing code built into their network stack (Amazon actually had a lot of trouble keeping up with demand when they were getting big, so they wrote up their own networking stack, which has since been returned to the FreeBSD project, iirc). So it might be worth your time to check that out and possibly run a mini BSD setup on an old computer or something to route the bandwidth to an internal network (of course this would likely require three NICs in a single computer...so more complexity there too). Some of the problem you are running into may be due to the network just being congested, which could explain the differing speeds. Then there may be an issue with certain servers not being able to push out 60 MB/s worth of data to you, for whatever reason.
Either way, please keep us posted about what you do and how you do it, I'm anxious to find out the final solution here.
Best of luck to you. -
Load Balance method for proxy - ISA or BlueCoat
Hi,
I would like to know that which load balance method such as src-ip, cookie or etc is most suitable for load balancing proxy servers such as ISA or Bluecoat. The Proxy will listen to many services - http, https, ftp, and etc. Thanks for the help.The methods you mentioned are not loadbalancing technics, but stickyness features.
Stickyness is not always necessary.
Now, for caching devices, it is good to always send users requesting a same object to a single proxy, so that the same object is not cached in all the proxies.
Therefore, the solution in this case is loadbalancing with url hashing.
For HTTPs, if you terminate SSL on the loadbalancer, you can use the same solution.
For all the other traffic, I would suggest to start with roundrobin and see after a while if it requires some adjustments or not.
Gilles. -
SSO with SAP R/3 with load balancing as backend over the Web AS
Hi,
we have Netweaver 2004 at this time and we have to connect the portal to a BSP application in a load balancing environment.
We set user mapping for the user and set the connection type from SAPLOGONTICKET to UIDPW. This is running for a test environment with only one R/3 system without load balancing.
Does anyone know the setting parameters for a load balancing environment (ok, the message server and...?).
Thank you.
Best regards
PatriziaHi all,
run into the same problem. Setting up a mapping with UIDPW in a non load balanced WEB-AS enviroment for BSP or Webdynpro for ABAP works fine. But if I go to set it up in a balanced system I can see the following behavior. The http request is send to the messageserver. This request enclosed my mapped user and password. The messageserver responds with an HTTP 301 wich contains one of my applicationservers, so far so good. The client sends a new request to the mentioned applicationserver but this time without the UIDPW. So the user will not be logged in.
I was wondering if my backend have to issue logonticket too, cause today it only accept tickets from the portal.
Is this is a bug or a feature?
Regards,
Bernd -
Dears,
My SharePoint farm is with the below configuration in our office :
Batch processing server the with Central Administration
Web Front End Sever 1 (http://wfe01)
Web Front End Sever 2 (http://wfe02)
I do have the load balance URL as http://finance.mycompany.com and as per the system administrator it seems configured properly.
In AAM i have mapped the URLs as below for the web application in Central Administration portal:
http://finance.mycompany.com - Default Zone
http://wfe01 - Intranet Zone
http://wfe02 - Internet Zone
I was able to browse the site via the load balance URL : http://finance.mycompany.com, but couldn't open the site using the Share Point Designer 2013. It always says the site not found.
please advise,
thanks,
AmmarWhat do the wfe01 and wfe02 aams do?
Are you browsing to the SharePoint site and using SPD on the same computer, is it part of the farm or a seperate client computer?
thanks Alex a lot for your response and appreciate the same.
WFE01, WFE01 is connected to the one central admin on Batch Processing Server (central admin URL is http://SharepointCA:5555 and the SharePoint Web Application is hosted under port 80 on the same server). So the AAM configured on the batch processing server
central admin.
I can connect to the site using the SPD inside the Batch Processing server if i mention the site urs as http://localhost. But not from other client computers by putting the load balance URL - http://finance.mycompany.com.
I can browse the sites directly putting http://wfe01, http://wfe02 and as well as the load balance URL (http://finance.mycompany.com). The custom webparts are getting crashed when i put the web application URL as http://finance.mycompany.com.
thanks,
Ammar
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