Software :: Traffic Load Balance Without Additional Hardware?
Mar 12, 2010
I have two Red Hat entreprise Linux 5 servers running the same applications, my goal is to load balance the incoming traffic between these two servers without adding an additional hardware as load balancer, the incoming traffic is basically Web traffic and on the servers, Apache and PHP are running. Red Hat solutions that I found are:
1- LVS
2- Piranha
3- Red Hat cluster suite.
Can LVS run on one of the real servers (or both servers, for redundancy issues) and load balance the traffic between its server and the other one? If yes, will LVS has a big impact on the CPU/memory usage? How can I estimate this usage if I know how much traffic is coming and the HW specs?
Can I install Red Hat cluster suite on these two servers, and configure it in a way that the virtual IP is on different server for different request (taking in consideration that the same session will be always served by the same server)?Finally, is there any other/better solution that can fit my requirements to load balance the traffic without additional hardware?
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Jan 3, 2010
I'm trying to do a implementation of load-balance with fail-over system using (ip route2 + netfilter), anyway after spent many time on it, I can't do it on my own, I think I'm so close about the solution anyway after check each line 30 times I'm really lost on IT.
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Oct 6, 2010
I have two machines fairly decent which I wish to cluster and run a vm (preferred choice virtualbox) on it, if possible with load balance.
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Jul 3, 2011
I've configuration like this :
Quote:
I try to configure my /etc/rc.local with these setting :
Quote:
But whenever i check my router after reboot, still i can't connect to inet.
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Jan 18, 2010
We have a server that needs to be hi availablility.
The problem is, sometimes our internet winks out for a few minutes.
We decided that we wanted to get two seperate lines to our server, and so they would be two different ip addresses.
What out there would allow us to serve apache on www.mywebsite.com on more than one ip, and, if we can, do load balancing?
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Apr 14, 2010
I used both pound and nginx as load balancers. With pound I had issues with SSL websites so I moved to nginx. With nginx I have the problem that it does not load balance equally between the backend servers.
I remember hearing something about another load balancing web server but I forgot its name.
Does anyone know other alternatives to nginx/pound?
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May 12, 2010
My problem is that I would like to load balance or aggregate 2 separate Internet connections on my laptop. Currently a hard line ISP is not available so I'm using an Sierra Wireless 885 USB air card. Thing is the card is quite slow. I also can tether an iPhone to the laptop. The ideal solution would be to have both connections being utilized to help speed up the overall experience, even if it is only a modest gain in speed.
as I do not know much about iptables and basic TCP/IP routing, I'm finding it difficult to implement those solutions. If someone can point me in the right direction ( a slightly dumb down how:to? or better explained? )
BTW, both phone and aircard get dynamic IP's. Running Ubuntu 10.4
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Mar 2, 2010
I came across this while trying to find a solution for my load-balancing clustering issue in another thread. Since I perceive this as something on its own, I decided to post a new thread. I came across this site to setup a two-server cluster using Conga - Luci and Ricci.
From my understanding, this is what was done:-
1. Both servers have luci running using a shared storage via GFS to provide a failover
2. Both (and same) servers have ricci agent running for the clustering
I'm aware that Conga clustering aim to achieve High-Availability.
1. Can it also achieve Load-Balancing?
2. If yes, would the guide from the link above be sufficient or would they be additional setup/pre-req to be done? Since I'm new to this area and there was no mention of load-balancing, I'm still wondering if this is what I need to incorporate.
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Feb 18, 2009
I seem to be having a strange problem configuring Piranha to load balance (Direct route) 2 ports across 2 w2k3 servers in a test environment. What is strange is that 1 of the ports are working fine but the other port doesn't work. I've read many how-to and after many frustrating hours I disabled the firewall, iptables and arptables services and one of the ports are load balanced across the 2 real servers. Here's the environment.
[Code]....
I can telnet from the client to the realserves on both ports and it's works. When I telnet to the VIP only one port gets through and the other gives me "could not open connection to host port 32777 : connect failed. The configuration in Piranha for one port is the same as the other. I can't help but think that some other configuration for port 32777 was missed.
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Sep 17, 2010
I've been playing with some intel server board and they provide a type of fakeraid which is called Embedded Server Raid Technology 2. Since Intel officially support RHEL and SLES on their servers, they provide drivers/modules for this fake raid (which supports raid 0, 1, 5 and 10). I have installed RHEL before on these severs and redhat's installer has the ability to load additional modules (via a boot command linux dd).
While intel doesn't provide the modules for other operating systems, they provide a library where people can build their own module for their kernel. I managed to build this module called 'megasr' (for now I've built it for kernel 2.6.32-24-generic which is my testbed at the moment but I would eventually build it for box i386 and amd64 for both server and desktop versions) and load it on a system which is installed on a single drive.
We are able to load it successfully and see the raid 5 as a single volume and access it (partition, format and copy data to it) and all its functions (work in degraded mode, rebuild, etc) work fine but my main goal is to actually install such volume as my main boot volume (similar to how its possible with RHEL or SLES). Is this possible? Load additional modules during the installation that will be present after the installation is finished?
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Feb 28, 2011
I know how to get root access in iConnect and ssh into it. I wanted to know whether we can install any applications on it using the package manager and what package manager it supports, like apt(debian based) or is it based on some other distribution.
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Apr 8, 2011
my servers are configured with:Ubuntu 10.10 server 64bit;Lighttpd MySQL-Server I need to make graphs for traffic (bandwidth usage) and cpu load every month. I tried to configure mrtg but after 48h, it didn't produce graphs.(I can't install apache2)
[Code]...
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Sep 27, 2009
Recently I notice that when I'm connected to an vpn server (pptpd) and I'm using it as a default gateway my download and upload speed decreases almost to the half of the usual speed. I made a test using iptables in order to count how much GRE packets are generated (except the real traffic itself) in that way:
Code:
iptables -I INPUT -p gre -j ACCEPT
iptables -I OUTPUT -p gre -j ACCEPT
iptables -I FORWARD -s 172.16.10.101 -j ACCEPT
iptables -I FORWARD -d 172.16.10.101 -j ACCEPT
The first 2 rules match all GRE packets between the pptpd server and client, and the next rules - the traffic between the server and the client.
When I turn the counters to zero and begin to generate traffic (to browse, to download etc.) I see that the GRE packets are even more than these in the FORWARD chain.
So, my question is first of all is my test correct and is it true that so much gre traffic is being generated during the browsing (it becames clear that the traffic is double than if the pptpd wasn't used as a gateway) and if yes - can that traffic be reduced?
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Mar 28, 2016
I am in serious situation involving PPTP protocol VPN in Debian 8 Jessie stable. I recently became a paid VPN subscriber. Using PPTP; Is there a way to automatically route all traffic through ppp0? Im getting the vpn service killed (ip address goes back to normal unmasked state) whenever there is a power outage (modem reset) and there are alot of those where I live, Im going to get astabilizer and I need a software solution for the situation as well. Theres gotta be a way to route all traffic through the VPN route ppp0 . I tried adding persist and maxfail 0 to the pptp config file but it did not do what i wanted.
Here's my peer configuration file :
pty "pptp blabla.net --nolaunchpppd"
name blablabla
password blablabla
remotename PPTP
file /etc/ppp/options.pptp
require-mppe-128
refuse-eap noauth
persist
maxfail 0
On a second note, its clear to add that I basically need a way to also auto load the line
pppd call blabla.net
and
route add default dev ppp0
On system startup by default so the computer does not use "Wired" connection ^at all^ when not through ppp0. Any other way of not losing VPN anonymity ever due to hardware malfunction.
Is there a way to do this? Ive looked on the net and everything seems like its either from the nineties or can fry my pc , Im no debian expert, less than a year at linux..
Need it to use wired only if ppp0 is being used so if its no vpn, no connection at all period,
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May 27, 2010
I am using KVM and created four guest Operating systems on it. The server host is Ubuntu 10.04.I am using 4 websites in a reverse proxy environment. One of our website is running on CentOS VM. Right now there is no traffic on the website static HTML pages. I do not have any clue as why it was taking longer time to be accessed.
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Apr 27, 2010
We have something on our network that is reaking havoc with our content filter. I am trying to track it down, but so far I have been unsuccessful. We have approximately 500 devices in 100+ different locations spread across 9 states. Looking at each computer is not really feasible.
I need a machine that can sit in between our network and our internet connection and graphically monitor in real time and logs how much traffic each device is sending and receiving. It would need to sit inline so it has to have two nics and be able to pass traffic. The machine also needs to be transparent. Reconfiguration of our routers or workstations is not an option.
I have used ethereal and wireshark before. Ethereal may be a viable option, but wireshark seems to provide lots of information, but no practical way to make use of it. how to set up the box to be a transparent device on the network that will allow internet bound traffic to flow (freely)?
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Sep 29, 2010
I need to set up my centOS computer as a firewall in my home network. Ive got 2 interfaces, eth0 and eth1. I want to allow and forward all traffic on eth0 and block all traffic on eth1 except ssh, ping(icmp) and DNS. How do I do this? Ive tried some editing in /etc/sysconfig/iptables but no luck.
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Mar 15, 2011
I wanted to tell my server to block all traffic but US only traffic. So i followed this guide:[URL].. Now I know, it's the best way to help prevent hackers/crackers (doesn't matter to me what they are called. I just have to stop them). My server only deals with US clients anyways so might as well just start right there for my server's security before getting into the brute force and injection preventions. So I got it all done compiled everything moved to the proper directory. I then started to setup my iptables. Like so
Code: iptables -F INPUT
iptables -F OUTPUT
iptables -I INPUT 1 -s *.*.*.* -p tcp --dport 22 -j ACCEPT
iptables -I INPUT 2 -s *.*.*.* -p tcp -j ACCEPT
[Code]...
After seeing that i went digging in the code and figured it was something todo with memory allocation.
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Jul 26, 2011
I have bought Vodafone Internet USB Stick (model is ZTE K3570-z). I have unlocked my device so I can use any company's SIM card to surf internet.
Currently I am using Uninor to surf internet on the stick. On Windows, I am using Windows based dialer software which has feature to check balance by *222*2# number. I get my balance in Rupees and also my Internet balance in MB so I can plan my usage same as we get on mobile.
But at most of time I am using Ubuntu Linux version 11.04. I have configured my USB Stick to work under Ubuntu Linux but I don't know how to check balance by *222*2# number?
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Feb 17, 2010
I have a firewall ( a pc with debian 5) with 2 internet connections. each connected to a ethernet card (the firewall has 2 ethernet pci cards so it has one connection per card)how can i balance the internet requests from my LAN using this 2 connections?
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Sep 17, 2010
I have a USB sound unit. It is detected and auto-configured in my 11.3 system as a Xitel HiFi-Link and is using the snd-usb-audio driver.
However, in the YaST | Hardware | Sound <0 HiFi-Link> | Edit, there is only one volume slider bar. I can not alter the left/right balance!
Is this a driver issue? Any thoughts on how to get two volume sliders?
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Jul 31, 2011
I'd like to set audio balance from command line (linux), I've looked at 'aumix' (and googled around) but it seems it does not have an option.
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Dec 3, 2009
The display under vlc is strangely colored in blue, or red missing. Anyway the balance isn't correct. I tried every output module but no one is correct. I am running 11.2/kde.
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Nov 18, 2010
I'm looking for a way to change the balance of my audio in the terminal. (i.e. setting a different volume for the left and the right speaker).I can set the volume level for both channels at once with a command like:
Code:
pacmd set-sink-volume 1 32768
But I'd like to do something like
Code:
pacmd set-balance 1 -0.2
to shift the balance towards the left speaker.
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Apr 22, 2011
Got a vps today running centos 5. The company gave me 2 ip addy's. I pinged both from my current location and it seems the ping to the 'aditional ip' is much lower. I'm in shanghai and the vps is in los angeles. The round-trip ping to the aditional ip is 190ms (not bad for 6500miles away), whereas to the default ip it is over 300ms.
Anyone know how i can configure centos to use only the aditional ip? Also, do you think there's a reason for this big change in ping? The 2 ip's only vary by the very last digit and only bye one.
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May 31, 2011
when I go to additional drivers the only driver that comes up is the ATI proprietary driver. Isn't there supposed to be broadband drivers and webcam drivers and all the drivers that I need for all the devices that I use. is there a better driver mangier out there.
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Oct 2, 2010
When i open one of the web browsers i use and try to load a web site it's taking to long to respond and sometimes it doesnt load the website at all. I have tried with firefox,epiphany,opera with all the same results. I am sure that this is not a problem with my internet connection because i don't have these problems with windows.Also the network manager connection settings are correct
I also tried choosing the old kernel(2.6.32.24) to boot from but no success.The problem is the same as if i am using the 2.6.32.25 kernel. The strange thing is that i can download packages from synaptic with full speed. Last think.I have recently downloaded the recommended updates from the update manager but i don't remember what are the things that where updated.
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Nov 27, 2009
I downloaded the Fedora 12 install CD's 1 - 5 . During the install, It only ever asked me for the first 3 CD's. Does anyone know what additional stuff is available in CD 4 + 5 ?
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Jun 29, 2011
how to create a additional favorite bar (dock) in Fedora 15?. The gnome 3 has one dock by default on the left pane, the number of icons that could be added are limited to 7, adding more icons reduces the icon size which makes the or favorite bar completely useless.orhow to increase the existing favorite bar height without reducing the icon size(i need two more icons to be incorportated), is it feasible?
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Apr 27, 2010
Could anyone let me which repository I need for Maxima? Also, I installed Octave from a different repository but I can't seem to find any of the additional packages, like the signals package for example.
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