Wlp and apache load balancing

Hi,
          I have been trying to understand webloigc clustering and load balancing capabilities. I have been through the edocs but it does not explain how things work, instead they only emphasis on how to configure.
          Consider the following scenario:
          --------cisco firewall/load balancer------------
          apatche1 apache2 apache3
          -------------------firewall-------------------------
          WLP1 WLP2 WLP3 WLP4
          My questions are:
          (1) how apache servers load balance incoming requests amongst the four portal instances? I understand that it will use weblogic proxy plug-in. the httpd.config also should be configured to proxy requests to WLP instances by adding the corresponding address:prot entries for each instance, using WebLogicCluster keyword.
          (2) Weblogic cluster will have nothing to do with load balancing? The only benefit I get of configuring weblogic cluster is session replication, right?
          (3) even failover is going to be handled by apache servers?
          (4) if I need to use SSL and I need to have my SSL encryption/decryption to be done on WLP instances; apache servers will only forward requests, no encryption/decryption to be done on the web tier. Is this possible?
          See in WebSphere the edge component will handle the load balancing and through it I can assign load weights for each appserver instance.
          (5) Are there any best practice to implement load balancing and failover on weblogic portal?
          I appreciate any input in this regards.

1. yes, configure the apache plugin. put your 4 servers in the WeblogicCluster property (host:port,host:port...). The proxy will round robin requests between the servers in the cluster, although sessions are pinned to a single server. So if a request with a session (jsessionid cookie) comes in, it will read the primary server from the cookie and route it to that server.
note that we have had trouble with keep alives ON and load balancing. we had to turn keep alives off to get load balancing working.
2. right, the cluster allows failover by replication. apache plugin will perform the failover.
3. the plugin will keep a dynamic server list so if a server goes down, it will update the cluster list and not route to it. it will also retry requests on another server on an error or timeout connecting. you can tweak timeout settings like WLSocketTimeoutSecs and ConnectTimeoutSecs. and keep idempotent ON which allows failover, unless you aplpication can't handle this.

Similar Messages

Apache load balance doubt

Hi,
We have four application nodes in which apache and forms sevices are running in all the nodes. Our apps version is 11.5.10.2.
I really doesn't know how the load is getting balanced among these nodes. Can some one pleas explain how the user connections are being distributed, I mean how apache load balance works and how to get this info.
Your explanation is really appreciable.
Regards,
Siva

Siva,
Contact your Network/Sysadmin teams and they should answer your question.
In addition to the doc referenced above, please see (How To Check Session Persistence On BigIP F5, Cisco Ace, Citrix Netscaler or Radware AppDirector Load Balancer Appliances [ID 601694.1]).
Thanks,
Hussein

H-REAP and Client Load-Balancing

I'm told by Cisco that H-REAP does not support client load-balancing.
We have a situation where we want to deploy LWAPPs using H-REAP into a conference room where training would take place.
Any suggestions on how to overcome the inevitable slowness these people are going to experience from being unevenly associated with the APs?
We can't re-write the application so we are looking for a wireless solution.
Anyone hear about how other organizations have dealt with this type of situation?
I'll be glad to supply more details if I am not being clear in my description of the problem.
Thanks in advance. All responses will be rated.
Paul

This is the functionality which is missing in H-REAP: Client and Network Load Balancing
"Radio Resource Management (RRM) load-balances new clients across grouped lightweight access points reporting to each controller. This function is particularly important when many clients converge in one spot (such as a conference room or auditorium) because RRM can automatically force some subscribers to associate with nearby access points, allowing higher throughput for all clients. The controller provides a centralized view of client loads on all access points. This information can be used to influence where new clients attach to the network or to direct existing clients to new access points to improve wireless LAN performance. The result is an even distribution of capacity across an entire wireless network.
Note: Client load balancing works only for a single controller. It is not operate in a multi-controller environment."
I suppose if we limit the number of users that can associate with a particular AP then we will achieve some client load-balancing. Though a hard limit on the number of end-users will also lead to situations where some end users will not be allowed any access.

ASA and vpn load balancing

Hi,
I am configuring 2 ASA5540 for internet trafic inside to outside ,
outside to inside (web,smtp) but also vpn load balancing for client to site , site to site and webvpn.
In the doc I can configure them for internet trafic as Active/Standby or Active/active.
for vpn : I can use vpn load balancing
But no information if I want to use the active/passif and vpn load balancing together.
Any thoughts on which way to go? what is the best thing to do ?
Regards

Hi,
I think that you cannot use an Active/Active configuration for VPN connections as it is stated on Cisco's documentation: "Note: VPN failover is not supported on units that run in multiple context mode as VPN is not supported in multiple context. VPN failover is available only for Active/Standby Failover configurations in single context configurations" available at http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a0080834058.shtml
Hope it helps

CSS on multiple subnets and separate load balancing

Hello,
I've a situation where I need to load balance incoming clients on subnet A to 3 real servers on subnet B - no problems there.
But I also need to load balance different clients on subnet C to 3 other servers on subnet D and clients on subnet E to 2 servers on subnet F.
Basically I want to use the CSS for 3 different load balancing operations.
Rather than using 3 separate CSS11503s can I do all this with multiple VLANs on the LAN switches and 1 CSS?
Any help appreciated
Regards Tony

you can have as many vlan as you want.
So yes you can do what you want.
Just be aware that the CSS can route as well between those vlans, so if you separation between them you may have to use ACL.
Gilles.

CSS and Oracle Load Balancing

Hi,
I have CSS in single arm deployment model. I have multiple servers load balancing on this CSS on port 80 etc. Today I am trying to load balance one Oracle server but I am facing problem with it.
Real servers are accessible on port 80 without any problem but when we are trying to access the same servers on VIP we are not able to see the web page.
real server http://192.168.17.12/irs.htm
real server http://192.168.17.14/irs.htm
real server http://192.168.10.37/irs.htm
VIP
http://192.168.200.58/irs.htm
Below is the configuration. I can do the telnet on port 80 and I can ping the VIP IP address.
I will only put 192.168.200.58 in browser I can see the oracle page but with the full URL i am not able to see it.
Though I have other oracle servers which I have load balance with the same configuration and I can access the web page.
==========================================================================================
http://tptest.enoc.com/forms/frmservlet?config=tp (This is working fine).
========================================================================
http://irs.enoc.com/irs.htm (This is not working).
By name and by IP address both are not working.
http://192.168.200.58/irs.htm (This is not working).
=============================================================================
service IRC_1
ip address 192.168.17.12
keepalive type tcp
keepalive port 80
active
service IRC_2
ip address 192.168.17.14
keepalive type tcp
keepalive port 80
service IRC_DR
ip address 192.168.10.37
keepalive type tcp
keepalive port 80
content ENOC_IRC
    add service IRC_1
    add service IRC_2
    add service IRC_DR
    vip address 192.168.200.58
    protocol tcp
    port 80
    advanced-balance sticky-srcip
    active
owner ENOC_GIT
content ENOC_IRC
    add service IRC_1
    add service IRC_2
    add service IRC_DR
    vip address 192.168.200.58
    protocol tcp
    port 80
    advanced-balance sticky-srcip
    active
group ENOC_IRC
add destination service IRC_1
add destination service IRC_2
add destination service IRC_DR
vip address 192.168.200.58
active
===================================================================================================
ENOCDC-CSS01(config)# show service summary
Service Name                     State     Conn Weight Avg   State
                                                         Load Transitions
IRC_1                            Alive         0      1     2            0
IRC_2                            Suspended     0      1   255            1
IRC_DR                           Suspended     0      1   255            1
ENOCDC-CSS01(config)# show summary
Global Bypass Counters:
   No Rule Bypass Count:     0
   Acl Bypass Count:         0
Owner            Content Rules    State     Services         Service Hits
ENOC_GIT
              ENOC_IRC         Active    IRC_1            103
                                            IRC_2            10
                                            IRC_DR           7
=======================================================================================================
Same setting I am doing for other servers and working fine only for these servers I am facing problem. Curently only one server is active in the configuration.
Kindly let me know what I am missing and how to fix the problem.
I have also attached the full configuration of CSS.

Hi,
My point of concern is that I did the same for Oracle server and this is working fine
http://192.168.200.95/forms/frmservlet?config=tp
only when I am doing the load balancing for
http://irs.enoc.com/irs.htm (This is not working).
By name and by IP address both are not working.
http://192.168.200.58/irs.htm (This is not working).
I dont have a option for TAC case is there a a way to fix the problem by apply other load balancing method. Is there something to do with the Circut VLAN. I didnt create the Circut VLAN 17 where this server is located.
I am doing almost 8 differenceservers load balancing in this CSS.
your expert opinion will definately help me.

Web dispatcher and J2EE load balancing

I have portal DBCI on one server and DI on multiple servers. I implemented Web dispatcher in front of the DI and it does the load balancing across all DI and CI. What I want to do though is not to route any users to CI instance - ie take CI server processes out of load balancing.
In ABAP environment you could create a logon group and not put CI in the group and users coming through the logon group do not go to the CI. I would like to do the same with Portal Java processes. In help.sap.com I found that web dispatcher uses default !J2EE group if there are no groups defined - to distribute users but I can not find anyway to define a logon group for J2EE java.
Does anybody out there know how to do this - define a logon group and include only DI and not CI in that?

> Raj,
>
> Which versions are you on J2EE? EP?
> If you are on EP SP14 or NW01 you can do workload
> distribution within the portal.
>
> James
We are using NW 04 based EP 6 SP 16. I am looking for to use web dispatcher to distribute users on the DI servers and not distribute any users on the CI server. What can I do so that if admin user enter http://CI_server:50000/irj then they can login to the CI server if users come through webdispatcher then they are not put on the CI but go to one of the DI servers only. By default web dispatcher would send some users to CI and I don't want that.

Lync 2010 and ACE load balancing

Hi there,
Has anyone deployed [or will be deploying] Lync 2010 utilising the ACE as a hardware load balancer. The ACE is not {yet] on the Microsoft list of supported devices for this product, but I am told this because of lack of documentation from Cisco.
The consensus from a few colleagues is that it should work as it did for OCS, which we have already deployed, so assuming that the set up and operation is similar, there shouldn't be much difference in the configurations.
regards,
Glenne.

Hey Glenne,
It seems you got that working already but I wanted to share this simple sample:
parameter-map type http PARAMETER
set header-maxparse-length 65535
set content-maxparse-length 65535
============================================
interface vlan 112
ip address 10.198.16.71 255.255.255.192
alias 10.198.16.124 255.255.255.192
peer ip address 10.198.16.72 255.255.255.192
mac-sticky enable
access-group input anyone
nat-pool 25 10.198.16.125 10.198.16.125 netmask 255.255.255.0 pat
service-policy input ANS-MGT
service-policy input VIPS
no shutdown
============================================
policy-map multi-match VIPS
class LYNC_VIP
    loadbalance policy LYNC_POLICY
    ssl-proxy server SSL_LYNC_TERMINATION
    loadbalance vip icmp-reply active
    nat dynamic 25 vlan 112
    appl-parameter http advanced-options PARAMETER
============================================
class-map match-all LYNC_VIP
2 match virtual-address 10.198.16.125 tcp eq https
============================================
ssl-proxy service SSL_LYNC_TERMINATION
key tac-key
cert tac-cert
chaingroup tac-chaingroup
============================================
policy-map type loadbalance first-match LYNC_POLICY
class class-default
    sticky-serverfarm LYNC_COOKIE
============================================
sticky http-cookie ACE_COOKIE LYNC_COOKIE
timeout 30
replicate sticky
serverfarm LYNC_FARM
============================================
serverfarm host LYNC_FARM
rserver LYNC_SERVER1 80
    inservice
rserver LYNC_SERVER2 80
    inservice
============================================
rserver host LYNC_SERVER1
ip address 10.198.16.93
inservice
rserver host LYNC_SERVER2
ip address 10.198.16.113
inservice
===========================================
Jorge

New ASA5512- 5515: content filter and WAN load balancing

Hi,
it's possible to make the content filter with the new models of asa?
One of our customers would like to have content filter with the possibiliy to monitor the single client activity (log).
It' s possible also make the load balancing between 2 WAN?
Now in HQ they have 2 WAN with WAN backup (ASA5505) and VPN to another site.
Thanks in advance,
Paolo.

I saw that you can add CX feature:
CX - Context Aware Security Feature:
Cisco ASA CX Context-Aware Security is a modular security service that extends the ASA platform with next-generation capabilities. It is available with SSD purchase for model such as 5512-X, 5515-X, 5525-X, 55545-X and 5555-X.
Application Visibility Control (AVC):
This is additional feature in CX. Activation of this feature require seperate license. This is the feature that do deep packet inspection for Application recognition. provide context-aware firewall security.
Web Security Essentials (WSE):
This is additional feature in CX. Activation of this feature require seperate license. It deliver features like "URL Filtering" and "Global Threat Intelligence".
Can somebody confirm that?
Have somebody already used and configured this features?
Thank you,
Paolo.

WLS 5.1 JMS and Message load balancing

Would I be right in thinking that WLS 5.1 offers no out of the box component that distributes incoming messages over a series of JMS Destinations? (much like a distributed destination would do in WLS 8.1?)
          Is it BEA's recommendation then that any JMS Client sending to these JMS destinations pick's up the responsibility for carrying out load balancing?
          regards
          Barry

Would I be right in thinking that WLS 5.1 offers no          > out of the box component that distributes incoming
          > messages over a series of JMS Destinations? (much
          > like a distributed destination would do in WLS 8.1?)
          Yes.
          >
          >
          > Is it BEA's recommendation then that any JMS Client
          > sending to these JMS destinations pick's up the
          > responsibility for carrying out load balancing?
          Application dependent.
          For example, you could set up an EJB that enqueues to the local queue - where the local queue's name is inferred from the server the EJB is running on.
          Load balancing (and fail-over) would then be accomplished by invoking the EJB and depending on standard EJB features...
          >
          > regards
          > Barry

SSL Cetificate and F5 load balancer.

Hi All,
I need to created SSL certificate to enable SSL on the HTTP server can you please give me the steps for that also i need to configure SSL on the load balancer how would i do that, i will be thankful if anybody can provide me detail steps, thanks in advance.
Thanks,
Virendra

Hi,
What is the application release?
For SSL, please see these documents.
Note: 123718.1 - 11i: A Guide to Understanding and Implementing SSL for Oracle Applications
Note: 300969.1 - Troubleshooting SSL with Oracle Applications 11i'
Note: 376700.1 - Enabling SSL in Release 12
For Load Balancing, please refer to:
Note: 380489.1 - Using Load-Balancers with Oracle E-Business Suite Release 12
Note: 727171.1 - Implementing Load Balancing On Oracle E-Business Suite - Documentation For Specific Load Balancer Hardware
Note: 601694.1 - How To Check Session Persistence On BigIP F5 And Cisco Ace Load Balancer Appliances
Note: 603325.1 - Using Cisco ACE Series Application Control Engine with Oracle E-Business Suite Release 12
Regards,
Hussein

NW04 Portal and Cisco Load balancer

Hi everybody,
does anyone have a similar landscape as I have?
Reverse Proxy - Cisco Content Switch Module for Load Balancing - two NW04 Portal Servers.
How did you configure the stickyness / Load balancing mechanism on the load balancer in order to get it running?
Cheers
Jochen

Hi,
Web AS Java issues a cookie called saplb.
You can check its value by connecting to the portal and then launching the command
"javascript:alert(document.cookie)"
within the browser. You will get a cookie value like
saplb_*=(J2EE6202500)6202551
The value in brackets determines the Instance; the second number equals the actual ClusterID (can also be found in the VisualAdmin. Usually 50 indicates the 1st server node, 51 the second one etc.
The saplb_*-cookie can be checked by the cisco see Cisco-Link above. Just configure the Cisco to be sticky on the instance number (value in the first brackets, in the example 6202500).
Several Customers do it like this, and actually the SAP Webdispatcher is also using this cookie to determine the instance to distribute the request to.
Good luck Bernhard

HTTP type connectivity between XI and R3 - load balancing options ?

Hi
We have a http type connectivity setup between XI and R3 in order enable XI to communicate with R3 using ABAP proxies. We did this by creating a RFC destination on the ABAP stack of XI of type 'H' ( http connection between R3 systems ). Now, while setting up this rfc destination, there is no option to specify a message server on R3 - we just see a target server field that can be filled in.
In an rfc destination of type 3 - on the XI box ( which is used for a XI --> R3 idoc adapter ) , I can see an option for specifying message server.
Does this mean that using type 'H' connectivity between XI and R3 does not give us an option of hitting the load balancing - message server on R3 and thus cannot use the load balancing setup on R3 ? Is this is a limitation of type 'H' connectivity between XI and R3 ?

for HTTP load balancing the options seems to be somewhat different....check if these threads provide you any help:
http://help.sap.com/saphelp_nw04s/helpdata/en/ae/9bfc3f9ec4e669e10000000a155106/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/79/a1ce9569444647956b0ec1cf443c4d/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/43/39c7b227b91bcbe10000000a1553f7/content.htm
Regards,
Abhishek.

Question about FCF and Oracle load Balance

We have recently set up the FCF and load balance advisory.
We are using JDBC UCP connection Pool.
Here is the service name is as following:
CATEST_FCF =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = ptt-pt-ildb-01-vip)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = ptt-pt-ildb-02-vip)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = CATEST_FCF.THECPP.COM)
(FAILOVER_MODE =
(TYPE = SELECT)
(METHOD = BASIC)
(RETRIES = 180)
(DELAY = 5)
-- service goal is SERVICE_TIME and CLB_GOAL is LONG
-- ons.config
localport=6101
remoteport=6200
loglevel=9
useocr=on
I was trying some test as the link below.
http://drdobbs.com/java/222700353?pgno=1
but my client is always trying to connect to instance 2 even the sys.sys$service_metrics_tab already showed the instance 1 can take on more load.
Total held connections: 9
[0] Instance name [TZNTEST2]
[1] Instance name [TZNTEST2]
[2] Instance name [TZNTEST2]
[3] Instance name [TZNTEST2]
[4] Instance name [TZNTEST2]
[5] Instance name [TZNTEST2]
[6] Instance name [TZNTEST2]
[7] Instance name [TZNTEST2]
[8] Instance name [TZNTEST2]
(CATEST_FCF, VERSION=1.0 database=CATEST service=CATEST_FCF { {instance=CATEST1 percent=88 flag=GOOD}{instance=CATEST2 percent=12 flag=GOOD} } timestamp=2011-04-12 11:59:36)
am I correct here? the percent for CATEST1 is 88. Does it mean CATEST1 is able to take on 88% more load, so it is more attractive now?
and why the connections always fell on CATEST2? How does oracle calculate the number of connections to each instance. Does it count inactive or killed session too? does it offer the load balance stats based on total number of connections on each instance or total number of connections just to this serivce on each instance?

I don't know if this helps, but there is a reply comment from
Macromedia at the bottom of the MX 6 LiveDocs for tag
cfprocparam
which was in response to a comment pointing out that calling
overloaded stored procedures containing refcursors did not work. (I
submitted a similar question to Adobe last night in the MX 7
version of LiveDocs for cfprocparam and am waiting for it to post.)
Macromedia jrunrandy said on Jun 30, 2005 at 9:45 AM :
I checked and regret to say that this isn't supported. There
is a bug for this issue,
53122, but it hasn't been addressed as of CFMX 7.
I think that this is going to be as official of a response
from Macromedia/Adobe as you are going to get unless you open a
trouble report yourself. I hope that this is enough to satisfy the
requirements of your DBA. Otherwise, you are probably going to have
to shell out the cash for an official trouble report to Adobe
(unless you have paid support).
Phil

Understanding DirectAccess and external load balancer

Hi,
I'm trying to understand the concept of DIPs with a external load balancer. We're trying to create a Directaccess cluster with to DA-servers in edge. I'm at the wizard for creating load balancer and choose external. Then it asked me to enter the DIPs. But
why is that? Should it not be sufficient with the current IP-address, since they are configured in the external LB. Or do I need to add a secondary IP-address and enter that in the wizard and enter them has the VIPs inte the external LB. Same goes for the
internal one.

Does that mean that i could choose any IP-address in the private range, despite that i have an edge configuration with one public ip-address and one internal address? Or do i need to allocate another public IP-adress?
Edit:
http://blogs.technet.com/b/mspfe/archive/2013/01/24/how-to-configure-directaccess-in-windows-server-2012-to-work-with-an-external-hardware-load-balancer.aspx
When following the guide, I use the current IP-address of the first nods external NIC. And get an warning I can't use that IP. Should I use the VIP that we have for the load balancer?

Wlp and apache load balancing

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