Linux HA and Load balancing
location: linuxquestions.com - date: January 30, 2007
I need some help on Linux clustering issue that is I want to build a High available and load balancing clustering solution in RHEL4. I am now going through linux-ha.org site which is currently making little sense to me as I m lost. Currently these I make out of clustering issue
To make the HA cluster
Say I am using 2 Nodes (Can I use more than 2 nodes?) one master and one slave with 2 NICs on both of them.
These are the softwares that are required:
Master node Configuration:
Load balancing for NUMA multiprocessors, in Linux kernel 2.6.30
location: linuxquestions.com - date: November 13, 2009
I want to know how load balancing is done for NUMA Multiprocessors in Linux Kernel 2.6.30 etc. and how is it different from the Load balancing done in Linux kernel 2.6.8??
[SOLVED] 802.3ad Link Aggregation Load Balancing
location: linuxquestions.com - date: August 30, 2012
I am running SuSE with (4) 1GB NICs using LACP. I have configured the switched correctly and the bond link works properly. What baffles me is that it does not seem to balance the load to the other members. One NIC always seems to do all the heavy lifting. If i start a cp from a remote host and then do another cp at the same time from a different host it will use the same NIC. I was under the impression 802.3ad did load balancing in addition to link aggregation? What am i missing here?
Load Balancing for a Browser Based Application
location: linuxquestions.com - date: February 9, 2003
We are a small startup company that is making the switch from Windows to Linux. We sell and are an ASP for medical software. The software we were selling only ran in the Windows world, but now we found a product that only needs a web browser (IE Explorer, Mozilla, etc.) to run. We have a server farm currently with Windows 2k Server and Citrix Metaframe on 7 blade servers. For obvious reasons of cost of ownership and better security, we are switching to Linux.
We currently have SuSe 7.3 available to us, but may get Redhat 8.0 or even Debian...we just want something that will be stable, secure, and can perform load balancing like Citrix does. We know that Redhat Advanced Server has load balancing functionality in it, but have been told that the kernal for Advanced Server is the same as the Redhat 8.0, SuSe personal, etc...it just has more stuff already loaded onto it.
So, finally our question is how can we make a basic install of Redhat, SuSe, or Debian handle this browser based
Load Balancing using Virtual IP?
location: ubuntuforums.com - date: May 21, 2012
I have a quick question.
I have 2 Ubuntu servers running SQUID for me. I wish to load balance these two servers they are virtual machines.
Can the use of virtual IP achieve this?
so I have my users pointing to 192.168.1.1 as the virtual IP for the two proxy servers running on physical IP of 192.168.1.2 and 192.168.1.3..
Your Help would be much appreciated
Load Balancing by Least CPU Usage
location: ubuntuforums.com - date: October 10, 2009
I'm seeking some general guidance, or even speculation on how one may achieve load balancing based on cpu and memory usage. The idea is this: I have a 4 terminal servers awaiting usage, and in front of them I have a pair of load balancers issuing this cluster a virtual IP. So ideally these load balancers would hand off each terminal connection request to the least busy terminal server. Are these terminal servers MS? Nix? Doesn't matter to me yet. I'm just looking to see if this is an achievable model.
Secondly, may this be achievable with Layer 4 load balancing? I've never dealt with Layer 7, and in some ways it seemed fitting considering we are dealing with the application level here, but then again we are dealing with one service alone.
Any advice/insight is most welcome, thanks!
High Availability Load Balancing and LAMP Servers
location: ubuntuforums.com - date: December 29, 2010
Hello! I figured I would follow this up with what came of my solution search and what we have currently in production We are averaging 1.2m uniques/month and utilize the majority of a 6mb pipe with burst option.
While I was looking for the best of both worlds, it would seem the only easy/free solutions are either live/failover or replication servers, where I was wanting a fully redundant live master/master configuration throughout our entire server system. Reality comes in when you have to start making sacrifices for flexibility or easy of use (I know some hard code *nix monkeys are going to yell at me for that one!).
Old server specs (1 unit):
- 1 x HP DL380 G5 : Dual Xeon 4-core, 8 gig ram, 6 * Cheetah 74gb SAS1 in RAID5, CentOS 5
First hardware specs (all on a gigabit network):
- 2 x SUPERMICRO SYS-5015A-EHF-D525 : Dual Core Atom based 1U servers with 4gb DDR3 memory and a 16gb SSD SLC HDD. Low power, all flash based load balancers. Mobo's feature Intel 82574L LANs!
- 2 x SUPERM
[SOLVED] Load balancing based on connections
location: ubuntuforums.com - date: August 25, 2008
I am looking into load balancing some connections and am wondering the best way to go about it. what we are looking to do is route all traffic to one server up to about 90% of the connection limits and then re-route all other traffic to the next machine. When the connections drop on machine 1, we want it to transfer connections from machine 2 on to machine 1 until it hits the 90% or so and then go back and forth like that.
What would be the best way of going about that?
Routing for 2 Internet Providers + Load Balancing
location: ubuntuforums.com - date: June 19, 2008
I have a server with 3 NIC's, 2 for separate DSL links, 1 for the LAN. I need to make use of both of the lines, and I need load balancing. I understand the general gist of how to do it, although I haven't tried it yet. So please don't direct me to Routing for Multiple Uplinks/Providers
My problem is that I get dynamically assigned IP Addresses, and that document only tells you how to do it with static IP addresses. Does anyone know how I can get it to work with static IP addresses??
I was going to make a script that would use curl to retrieve my ip from whatismyip.org, but that won't work because if it is set up correctly it will choose a random interface to send the request, so I could end up with either IP Address.
Load balancing/resilient solutions any recommendations?
location: ubuntuforums.com - date: February 12, 2010
I have a web site running on a server and would like to implement a resilient solution. Can anyone recommend any solutions based upon their own experiences? From browsing the web, I know there are a few Linux load balancing options that could meet my needs like UltraMonkey, CrossRoads, Linux Virtual Server and BalanceNG so here is a more detailed description of my requirements:
The client should not be aware if one web server becomes unavailable.All requests from one client should be sent to the same web server so some kind of sticky session feature would be one solution. Sending all requests from all clients to one server until it became unavailable then sending requests to a second server (so no balancing, just resilience) would actually meet my needs too, although is less sophisticated.The solution must be free so it can't be a hardware appliance and must be able to run on a relatively low spec PC e.g. Pentium 4.An identical web server will be set-up so I have two 'cluster' membe
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