CSM - Load balance using Server CPU

Hi
I have a customer who requires the load-balancing prediction
algorithm to be based on the CPU level of the Server. So the server with the least CPU is chosen at the laod-balancing stage.
Is there a way to do this?
Thanks James

Hi James
With CSM the only option is DFP (Dynamic feed back protocol). If your application vendor provides DFP agents (which is very unlikely) for the application then these agents can be installed on App servers for the desired purpose.
Config details at
http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/csm/4.2.x/configuration/guide/rsfarms.html#wp1039774')">http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/csm/4.2.x/configuration/guide/rsfarms.html#wp1039774
With ACE you can use SNMP based probes to achieve what you are looking for.
Syed Iftekhar Ahmed

Similar Messages

Portal Landscape - With 2 CSM (load balance) related question

Hi,
We are currently having a portal landscape (Dev, QA -2 app servers, PRD - 4 app servers). The load balancing happens on Production Portal using CSM (load balancer) and it does SSL offloading for security encryption and it lands onto one of the application servers. When we try to login to portal it authenticates using the LDAP (OID). And we have some links which takes to backend R/3, BW etc (we use SAP load balance using SMLG logon group)
Now due to another special project the following is what we are planning:
1. Adding couple of more application servers for production portal or having seperate second portal landscape itself
2. Adding couple of more application servers for R/3 production server (load balance can be done with special logon group for that)
Questions are:
1. When we land into current production portal page and click a iview link for the special project it should go only to those special portal app servers (planning to do through another CSM) and from their to backend R/3. In this scenario how the authentication (or sso ticket) happens when it goes from CSM to another CSM, will it ask for login again or any issue will happen with SSO ticket ?
2. If we decide to go for second portal landscape and in the same scenario when login to current prod portal page and click a iview link for the special project it should go to that another production portal,in that case what will happen to the login authentication happened through the first portal and SSO ticket ?
3. Suppose if we go to the second production portal directly through a website and if the user tries to login using the same id to first portal how portal will deal in terms of security (SSO) and also how backend R/3 will behave when same id comes as part of SSO.
Or if anyone thinks of any other issue apart from SSO or encryption related things which i need to be aware of, kindly let me know.
Thanks,
Murali.

I am not sure what CSM is, but I would expect it only does ssl offloading and a sort of "reverse proxy" against the cluster.
>1. When we land into current production portal page and click a iview link for the special project it should go only to those special portal app servers (planning to do through another CSM) and from their to backend R/3. In this >scenario how the authentication (or sso ticket) happens when it goes from CSM to another CSM, will it ask for login again or any issue will happen with SSO ticket ?
This depends on the host name you use for the two CSM clusters. If they have the same subdomain, there should be no problem as the SAP Logon Ticket (MYSAPSSO2) cookie is issued to the sub domain of the portal.
If they do not have the same subdomain, the second CSM cluster will receive the request without the MYSAPSSO2 cookie, and will therefore trigger reauthentication.
>2. If we decide to go for second portal landscape and in the same scenario when login to current prod portal page and click a iview link for the special project it should go to that another production portal,in that case what will >happen to the login authentication happened through the first portal and SSO ticket ?
It will fail, as the MYSAPSSO2 cookie from the first portal is not recognized in the second. However, you can easily setup so that the second portal trusts the first and does a logon based on its credentials
>3. Suppose if we go to the second production portal directly through a website and if the user tries to login using the same id to first portal how portal will deal in terms of security (SSO) and also how backend R/3 will behave >when same id comes as part of SSO.
I assume both portal will be setup against the same LDAP/UME source. Therefore it will allow the logon. The backend systems should trust both the first and second portal (STRUSTSSO2 transaction)
I think your architecture choice comes down to if the new project has special considerations with regards to versioning of portal. If it does, it would be sensible to separate it into a separate portal (and you can always integrate them with the first portal through portal federation if you have a relatively new version).
Regards
Dagfinn

How can ftp service on non-standard port be load balanced using Cisco ACE.

How can ftp service on non-standard port be load balanced using Cisco ACE.For example ftp service required on tcp 2000 port

Hi Samarjit,
you can do this by specifying the port number in the class map that you create . Please find the below mentioend config guide where you can specify the tcp/udp port , range or ports or even the wild card to match the port.
http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/v3.00_A1/configuration/administration/guide/mapolcy.html#wp1318826
Regards
Abijith

CSM Load Balance redirect

I have a request to do a redirect on a CSM load balance device and I am not sure how to go about doing it.
The request is to send traffic destined for https://payments.domain.com to https://www.diffdomain.com/folder/folder/page.jsp. I already have a serverfarm created for www.diffdomain.com, I guess I could create a vserver with a unique IP address for payments.domain.com and point it at the same set of servers, but how would I append the "/folder/folder/page.jsp" on to the request?

Hi,
The only way you can do HTTPS to HTTPS redirection is if you have an SSL module or also if this module happens to be a CSM-S. To be able to redirect encrypted traffic the CSM needs to inspect first the L5 information contained on the HTTP header. Once the SSL card has decrypted the traffic you can configure a webhost relocation serverfarm to ask the client to send the request to https://www.diffdomain.com/folder/folder/page.jsp which will be sent to the 443 vserver that is already taking traffic for https://payments.domain.com
Hope this helps.
Pablo

Load balancing using Hardware/Webcache??

Hi ,
I am using iAS 10.1.2.02.Please share some best practices of Failover and Load balancing using hardware or Oracle web cache?
Also what is most recommended by Oracle.
Regards,
Noman

Hi ,
I am using iAS 10.1.2.02.Please share some best practices of Failover and Load balancing using hardware or Oracle web cache?
Also what is most recommended by Oracle.
Regards,
Noman

Load Balancing FTP Server thru CSM using a single Client IP

Hello,
We have a need to load balance 3 FTP servers. These servers are reached only from a single client IP which is a database server. The FTP method that is being used is currently passive. Our configuration is currently unidirectional, ie, the FTP client (the one database server) sends to the VIP and the FTP Servers then talk directly back to the FTP client and the traffic does not go back through the CSM. The problem is that because FTP negotiates another port to talk on, we have to use sticky so that the connection is sent back to the original FTP server that sent the FTP data port to talk on. But, since we only have a single client IP that is ever used we are not load balancing appropriately across the FTP servers.
Traffic flow goes something like this, tcp port followed after colon as an example
1. FTP Client ----> VIP:21
2. CSM ---------> FTP Server:21
3. FTP Server --------> FTP Client(FTP server says come talk to me on port 1700)
4. FTP Client ---------> VIP:1700
5. CSM ---------> FTP Server:1700
6. FTP Server:1700 ---------> FTP Client
repeat steps 4 thru 6
Here's our hardware and software:
WS-X6066-SLB-APC running 4.2(2)
Config is as follows
module ContentSwitchingModule 9
ft group 101 vlan 9
priority 10
vlan 216 client
ip address 10.209.16.31 255.255.252.0
gateway 10.209.16.1
vlan 20 server
ip address 10.209.0.31 255.255.252.0
alias 10.209.0.11 255.255.252.0
probe ICMP1 icmp
interval 3
failed 3
receive 3
serverfarm FHEPRT
no nat server
no nat client
real 10.209.0.72
inservice
real 10.209.0.73
inservice
real 10.209.0.71
inservice
probe ICMP1
sticky 106 netmask 255.255.255.255 address source timeout 3
policy FHEPRT_POL1
sticky-group 106
serverfarm FHEPRT
vserver FHEPRT1
virtual 10.209.16.71 any
vlan 216
unidirectional
serverfarm FHEPRT
replicate csrp connection
no persistent rebalance
slb-policy FHEPRT_POL1
inservice

You are missing "service ftp" config in the Vip definition. Try the following
vserver FHEPRT1
virtual 10.209.16.71 tcp ftp service ftp
Syed Iftekhar Ahmed

Using Web Cache to Load balance Forms Server application.

Hello,
I apologize for cross posting this question in the Forms and Caching Services forum. But I thought my question will have a better chance.
I have read that it's possible to use Oracle Web Cache as a software load balancer between multiple Application Servers.
We are running Oracle9iAS R1.0.2.2.2a, with Forms/Reports6i servers on 2 Win2k boxes i.e our Forms6i application is deployed on two seperate boxes in two distinct locations. Users at each location, use their respective App Server url.
Since the application is the same i.e. Forms6i code/fmx is the same for both locations, I am looking into loadbalancing and failover capability that Web Cache might be able to provide.
I AM ONLY LOOKING AT THE LOADBALANCING & FAILOVER capabilities and NOT caching.
So basically all users from both locations will point their browser to this Web Cache and the Web Cache will direct each connection to either of the two boxes. So, if either of the boxes dies, Web Cache will divert the requests to the other box.
My concern is whether Web Cache supports this for the Forms requests that it will receive from the users. We are using Servlet Deployment of Forms, so technically, all communication is going though the HTTPD.
Has anyone done this or has any ideas as to whether it's going to work or not? Oracle's FAQ insists that Forms is not supported. But I want to make sure that even loadbalancing is not supported. And if not supported then is there any other solution.
Any comments appreciated.
Thanks,
Manish

Using Web Cache to load balance servlet-based Forms (6i and 9i) is unofficially supported. I say "unofficially" because we have actual customers doing it and getting support, but the 2 development teams (Forms and Web Cache) haven't actually done any integration testing of this sort of configuration yet. For your case, please contact your Support rep and ask what was done to use Web Cache as a load balancer for Forms6i at METRO in Germany. The Forms product managemment team is writing up a white paper to describe how to do it, but until then, you'll need to go through Support. Please contact me if you want more information.

CSM Load Balancer Help

Hey,
Just a quick question....
Does anyone know a) if it's possible and b) how to have two servers off the CSM but instead of load-balancing between them make them a failover pair i.e. if server A goes down server B will take over - done using the same VIP?? It's needed because the application on the servers can't do load-balancing yet but can work in a failover way.
I'm reading the book trying to work it out but if someone has done this before that would be great!
Thanks
Anthony

Thanks for the responses.
I'm using CSM 4.6(6) and have given what you suggested a go but have run into problems.
When I disconnect the primary server I see that go out of service but that also knocks out the VIP and it never fails over to the second server. Am I missing something? I've attached the relevant parts of the config and would be greatful for any advice.
serverfarm FARM1
nat server
nat client WEB
real 10.2.250.10
inservice
probe HTTP
serverfarm FARM2
nat server
nat client WEB
real 10.2.250.11
inservice
probe HTTP
vserver WEBTRAFFIC
virtual 10.2.250.100 tcp www
vlan 250
serverfarm FARM1 backup FARM2
persistent rebalance
inservice
I also had a go at creating that variable but it wouldn't let me...just said variable not configurable - but I'll play with that and see if I can work it out...I'm not so bothered as long as the backup part works.
Thanks guys...
Anthony

CSS11503 load balancing virtual server IP's

Hi CSS experts,
We have a Cisco Content Services Switch 11503 Load Balancer which seems to require Real Server NICs to be plugged in. When I plug a cable from our Cisco 3560 switch into the Cisco Load Balancer, it can't see the 2 web server IP's that I'm trying to load balance for HTTP/HTTPS. The virtual IP does not display the webpage of either web servers.
On the otherhand, when I use two physically separate 1U web servers and physically plug 2 cables (1 for each server) into the CSS 8 port switch, the virtual IP is able to redirect the traffic to both web servers.
How do I configure the CSS to load balance and actually see 2 IP's on the network which isn't plugged in physically per server into the CSS 8 port switch.
Internet->CSS->1 cable plugged into Cisco switch which host 2 web servers.
Thanks,
Mike
Configuration:
circuit VLAN1
ip address 192.168.1.10 255.255.255.0
service Websrv1
ip address 192.168.1.104
protocol tcp
port 80
keepalive type http non-persistent
active
service Websrv1SSL
ip address 192.168.1.104
protocol tcp
port 443
keepalive type ssl
active
service Websrv2
ip address 192.168.1.101
protocol tcp
port 80
keepalive type http non-persistent
active
service Websrv2SSL
ip address 192.168.1.101
protocol tcp
port 443
keepalive type ssl
active
owner Web
content NG
add service Websrv1
add service Websrv2
vip address 192.168.1.7
port 80
protocol tcp
advanced-balance arrowpoint-cookie
url "/*"
active
content NGSSL
add service Websrv1SSL
add service Websrv2SSL
vip address 192.168.1.7
port 443
protocol tcp
advanced-balance sticky-srcip
sticky-inact-timeout 60
active

I checked the connectivity to the servers form the CSS and it was good. I was able to ping, and the connection status in sh service summary incremented by 1 each time I tried to connect. From the server, I was able to ping back to the IP of the CSS and the VIP address as well. I have tried using only 1 server for 1 VIP. I have tried changing the default gateway on the server to the IP of the CSS and the VIP IP as well. It still doesn't seem to help. Anymore suggestions for me to try?
Thanks
Mike

Load Balancing Reports Server

I am supporting an app server for a Forms & Reports application that uses run_report_object to run reports on a Reports Server. This is on 10gR2 (10.1.2.0.2) on Solaris & Linux.
Currently running multiple standalone Reports Servers on a single server (for 3 different projects). Need to prevent one project from affecting another as much as possible (yes, I know they are on the same box....).
I have a requirement to ensure that a hanging Reports Server doesn't prevent other jobs from running. I see that Reports Server clustering is no longer an option. The Reports documentation about how to implement HA basically say just read the AS docs and figure it out. The problem is that using the AS J2EE HA means that you'd HAVE to use the Reports Servlet. Additionally, I don't see how the reports servlet could be called so that more than one Reports server would be used.
I keep hearing about an impending doc about implementing HA on Reports. When is it coming?
Future environments will be multiple AS installs on separate boxes accessing a RAC DB.
So, what's the scoop? How can I implement this?
So, here are my questions:
1. (Two Servers) I believe I could do this on two servers if I had the same Reports Server name on each. If so, could I have two OC4J containers on each server both with the same mount point for the rwservlet application? What else would I need to do to tell OHS to load balance between both since they have the same name.
2. (Two Servers) If 1 above is okay, would it be possible to have two OC4J containers point to two different standalone Reports Servers?
3. (One Server) Can I start up multiple Reports Servers on same box with the same name (I'm pretty sure this is no :-) )
4. (One Server) Like 2 above except on a single server. Two independent OC4J containers accessing two different servlets. Each has a default Reports Server setup. URL would look the same from each.
I'm kind of graping for straws here on how to move ahead. I'm surprised the Reports Server clustering was taken away, but I suspect it is because the underlying Visibroker architecture was changed and there weren't the resources required to redo this. I'm not sure that is a good thing.
Any help would be appreciated.
:-) Steve

Say you have two servers where you configured Reports, i.e. either in full Enterprise Edition or in AS10g Forms&Reports standalone.
For example:
ServerA.oracle.com with port 7777
ServerB.oracle.com with port 7777
Without using a load balancer you would call a Report with:
http://ServerA.oracle.com:7777/reports/rwservlet?report=test.rdf&userid=scott/tiger@orcl&destype=cache&desformat=htmlcss
http://ServerB.oracle.com:7777/reports/rwservlet?report=test.rdf&userid=scott/tiger@orcl&destype=cache&desformat=htmlcss
Now you put a load balancer in front of them and assign it the virtual name:
reports.oracle.comNow you can call Reports with this URL:
http://reports.oracle.com:7777/reports/rwservlet?report=test.rdf&userid=scott/tiger@orcl&destype=cache&desformat=htmlcss
To make it more interesting you create a specific Reports Server on ServerA called repserver_a and on ServerB: repserver_b. You add them into Enterprise Manager with:
$OH/bin/addNewServerTarget.sh repserver_a (on ServerA and with repserver_b on ServerB). You might need to reload opmnctl and emctl with:
opmnctl reload
emctl reloadIn $OH/reports/conf you add this line at the end (use server=repserver_b on ServerB) :
reporting: userid=scott/tiger@orcl destype=cache desformat=htmlcss server=repserver_a %* You'll call your Reports with this URL:
http://reports.oracle.com:7777/reports/rwservlet?reporting&report=test.rdf
Good luck!
Martin

CSM load balancing

I have an interesting problem. I have a VIP with a two server, serverfarm. Originally the VIP and serverfarm were doing load balancing in the switch IOS and the vip was configured with a 27 bit subnet mask. I moved the configuration to our csm mod and removed the subnet mask. The original sticky was set to 120 and I reset the sticky to 30 as part of the move. Now the load balancing is extremely off kilter (200 connections to 7). Any ideas what could be amiss?

Real servers are physical devices assigned to a server farm. Real servers provide the services that are load balanced. When the server receives a client request, it pulls matching information from a disk and sends it to the CSM for forwarding to the client.
You configure the real server in the real server configuration mode by specifying the server IP address and port when you assign it to a server farm. You enter the real server configuration mode from the serverfarm mode where you are adding the real server.
This URl should help me:
http://www.cisco.com/en/US/products/hw/switches/ps708/products_installation_and_configuration_guide09186a00801760d0.html#xtocid439743

Help: AM Agent working with load balancing AM Server

Hi,
We are trying to set up the policy agent to work with two AM Servers behind a load balancer.
The agent deployment document said that in the AMAgent.properties we must set
com.sun.am.loadBalancer_enable=true
According to the AM deployment guide(http://docs.sun.com/source/817-7644/appE_loadbalancerconfig.html),
we also set in the AMConfig.properties something like
com.iplanet.am.lbcookie.name=server1
com.iplanet.am.lbcookie.value=server1
The loading balancing just does not work. Can anyone explain how AM agent works under such an deployment
environment? Some people say the agent can find the real server using the naming service, but the not
much explanation can be found.
More info on our two machines:
The two AM servers are named server1.domain and server2.domain. The virtual LB name is server.domain.
The two AM servers were installed using the host name server.domain. We added the servers' real name
in the AM's fqdnMap. At the agent config file, the name service is pointing to the LB.
Really appreciated any advices.
Regards,
Henry

Thanks for your reply.
We figured it out lately thanks to help from Bernhard.
1) use each machine's name to install the AM servers using the same LDAP server.
2) In AmAgent.propeties, set com.sun.am.loadBalancer_enable=true
3) In AM server platform, add in all machine's names
4) In Organization alias, add in two machines' name
5) In fqdnMap, add in load balancer's name
6) In LB, set cookie stickiness based on cookie JSESSIONID

Client side load balancing and server side load balancing

Hello Team,
I need to know how to set up client and server side load balancing in oracle rac. What all things to be implemented like creating a service, tnsnames.ora settings etc.
And also if i used SCAN ip instead of VIP. how the settings will change.
Regards,

Hi,
please find here an Whitepaper with the information
http://www.oracle.com/technetwork/database/features/availability/maa-wp-11gr2-client-failover-173305.pdf
kind regards

Network load balancing SQL Server 2012

Hi all,
Out of pure curiosity, would the following scenario to load balance work:
* Create an NLB of 2 nodes
* On each node, install sql server, in my case 2012 std
* Create a merge replication which manages identity columns between the 2 servers. One node is the publisher the other one the subscriber
If I were to implement this, what would be the risks ?
Thanks
Olivier

SQL Server does not support load balancing.
Yes you can do what you describe. You need to use "sticky sessions" to make sure users always get the same server, which kind of defeats the purpose of load balancing.
I would suggest looking into an AlwaysOn availably group cluster instead. Not the same thing, but built in and you can redirect read only users to use a replica.
https://msdn.microsoft.com/en-us/library/ff877884.aspx

Load balancing http server

Hi There,
I want to implement a load balancer (linux virtual server) into our htmldb configuration. We currently run the http server on the same machine running oracle/htmldb. I want to split this out and use 2 seperate machines running http server behind the load balancer, both these http servers will be pointing to the same oracle database.
The load balancer will not be using persistent sessions, therefore client requests will be sent evenly to each http server. My main question is, will I have problems with user sessions, or (as I imagine) is all the session information written to the database ?
Thanks in advance.
Tom

Bill,
There are a few things you need to consider
1: Availability of http server. ie how many are you going to have. How are you going to access them. Load balancer, DNS round robin. These should be on different servers to the database.
2: How are the http servers going to connect. For RAC you'll need to specify TNS connections. I'd also recommend that you look at using application partitioning using services in the RAC cluster. That way you can have Apex using a subset of nodes in the cluster .
3: If you are going down the RAC path then I'd assume availability is a priority. You''ll need to think of standby configuration. Again this is possible with TNS configuration.
You can do it all with Apex. RAC and Standby but it will take planning and testing.

CSM - Load balance using Server CPU

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