Ubuntu Servers :: Cluster To Run VM With Load Balance?

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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Networking :: Conga - Luci And Ricci : Two-Server Cluster - Load-Balance Achievable?

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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Software :: Does Not Load Balance Equally Between The Backend Servers

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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Networking :: How To Do Load-balance Work As Well

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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Networking :: Load Balance Failover 2 ISP On One Ubuntu Router

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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Ubuntu Servers :: Setup An Apache Web Cluster Using Red Hat Cluster Suite

Sep 1, 2011

I am working in a project that needs to set up an Apache Web Cluster. The cluster needs to be High-availability (HA) cluster and Load-balancing cluster. Someone mentioned the use of Red Hat Cluster Suite, but, honestly, I can't figure out how it works, I haven't been able to configure it correctly. The project currently have two nodes, but we need to support at least three nodes in the cluster.

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Server :: Best Way To Serve Website On Two Ip Address (load Balance)?

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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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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Ubuntu Networking :: Load Balance Or Aggregate(combine) Internet Connections

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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Fedora Servers :: How To Setup GFS2 Without Cluster Suite / How To Configure Cluster.conf

Nov 6, 2010

I am trying to build GFS2 cluster with 2 or 3 Fedora 14 nodes, but I've encountered some problems from the start. First luci does not work at all in Fedora 14. There is no luci_admin and even if I manage to start luci service, I get a blank white screen when I try to open it from the browser. I've googled a bit and found that I'd might be able to setup GFS if I manage to build cluster.conf manually and start the cluster suite, but I cannot find documentation on how to create cluster.conf anywhere. If anyone knows how to setup GFS2 without a cluster suite or how to configure cluster.conf.

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CentOS 5 Server :: Configuring Piranha To Load Balance (Direct Route) 2 Ports

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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SUSE :: How To Network Load Balancing Cluster

Jan 2, 2010

I have 2 openSuse 11.1 servers. both of this servers serve a static web site. i want to Build A Network Load Balancing Cluster? how i can do this?

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Fedora Servers :: Build A F12 Cluster To Run DHCP On Top Of Two Servers Using Pacemaker And Drbd?

Apr 28, 2010

I'm trying to build a Fedora 12 cluster to run DHCP on top of two servers using pacemaker and drbd. The pacemaker runs great but i'm having the hardest time getting DRBD installed.

My kernel version is 2.6.32.11-99.fc12.i686.PAE First i tried to [root@dhcp-primary drbd]#yum install drbd this doesn't give me everything because apparently the kernel module for DRBD must be built from source. so i unpacked drbd-8.3.6.tar.gz and tried :

[Code]...

I'm not very experienced in compiling from source i'd love to make an rpm for this but after scouring the web and trying different install methods, I am still at a loss.

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Ubuntu Servers :: Oscar Cluster Installation?

Apr 3, 2010

i want to install oscar cluster on my ubuntu 8.04 , so i added its repository from http://svn.oscar.openclustergroup.or...ki/repoTesting .i added repo from Testing the development version section.when i use oscar-config --bootstrap i receive this error :

Initializing ODA: mysql
ERROR: Unknown ODA type ()
at /usr/bin/oda line 886[code]....

i must mention that i have mysql database .

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Ubuntu Servers :: Mysql Cluster Server 7.1 In 10.04 LTS?

May 21, 2010

With the new realease of Ubuntu 10.04 LTS, I was wondering if there was going to be a package for installing Mysql Cluster Server 7.1

If not does anyone know of a good walkthrough for compiling and installing it in Ubuntu 10.04 LTS?

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Ubuntu Servers :: Setup A Cluster Using Heartbeat?

Jun 29, 2010

I am currently trying to setup a cluster using heartbeat. Unfortunatly it does not do what I want to do. I am using heartbeat 2.1.4-11 on a readhat system. I am using the the cib for configuration. What I want to do is the following: I have two Nodes. I want to run a clone resource on both nodes. It's named I want to run as a clone. This works fine.Additionally I want to have two virtual IP adresses. One should be set on Node 1 the other on Node 2. This works fine as well. I want to set dependencies between the resources. And this is where I have problems. What I want to achive: In case named is not able to run on a node, the vIP should switch to the other node (which then will have both vIPs). In case both nodes are able to run named, there should be one vIP on each node. Sounds simple, but does not work.Accourding to the heartbeat docu this an be achieved by using

[Code]...

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Ubuntu Servers :: On IBM Cluster - HS20 And JS20 Blades

Mar 26, 2010

Has anyone ever installed an Ubuntu server version on an IBM cluster (HS20 and JS20 blades)?

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Server :: Install Red Hat New Cluster - Error: Cman Not Started: Cannot Start, Cluster Name Is Too Long

Mar 15, 2011

I'm having a very strange problem with red hat cluster. After testing it in the lab, I tried to install a new cluster and received the following error: cman not started: Cannot start, cluster name is too long or other CCS error /usr/sbin/cman_tool: aisexec daemon didn't start I've checked the internet for that error, but nothing. I decided to to take the example from cluster.conf man, which looks like that :

[Code]...

And still I get the same error. I can find my servers both from DNS (FQDN and short name) and they also appear in /etc/hosts.

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Ubuntu Servers :: How To Setup Based Cluster Configuration For Each Node

Jun 27, 2010

I need to setup an linux cluster ..so i prefer ubuntu because of support and i personally i use ubuntu.. and can any one explain in breif ..what all the things needed to setup an ubuntu based cluster my configuration for each node will be (totally 6 nodes) core2 duo with 4 gb ram i need 4 nodes and 2 for load balancing..

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Software :: Create A Cluster With Two Servers And One Storage?

Jul 14, 2011

I trying to create a Cluster Linux with two servers and one storage, I have mounted some filesystems in both servers, but, when I create a file on server (1), I don't see the file on server (2).

Is that a problem with the linux or storage configuration ?.

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Fedora Servers :: Setting Up A Cluster For Scientific Computing?

Mar 2, 2010

I want to set up a cluster for scientific computing (mainly statistical stuff with R). I have a few conceptual questions. First, is there a difference between a Beowulf cluster and a cluster that has single-system image ("SSI," e.g. using openSSI or LinuxPMI)? If so, what's the difference? Second, if there is a difference between Beowulf and SSI, which one is better for scientific computing? Third, does using Eucalyptus make sense for scientific computing or is this more suitable for IO-oriented operations such as web service or databases

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Red Hat / Fedora :: Use Storage On Multiple Servers As A Single Cluster?

Apr 20, 2011

Can ANYONE point me in the right direction on how to use storage on multiple servers as a single cluster?I thought storage cluster was for that but, after much googling, and even more help from here, I don't think that achieves my goal. My goal is to have multiple servers share a file system, to act as somewhat of a network raid, so if node-A goes down the files are available on other nodes, and hopefully so when the capacity of the nodes are reached I can add nodes to expand the "cluster".

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Ubuntu Servers :: Create Script To Keep Machine Cluster Synced Properly Until Failover

Apr 26, 2010

I've been reading up on clustering a bit and want to create simple 2 machine cluster of which the 2nd one will turn on and take over traffic at the previous machine's IP (I'm aware there will be a couple minutes of downtime while the failover server boots). I've looked into doing a simple DNS round robin, but I think both machines would need to be online all the time for this to function correctly. I've also looked into linux-HA and GlusterFS but both seem a little intense for the simple failover I'm trying to achieve. One catch if approaching with DNS round robin... the server that I want to setup with a failover also operates as a DNS server. Anyone know the simplest way to complete this? One idea I had (that seemed like a bit of manual work): Create script that runs every 60 secs through CRON on firewall (running pfsense) and have it check if master-server is up. If it's not, it will send a WOL signal to the slave, which has a mirrored image of the first. the problem I have with that is I will also need to create a script to keep both synced properly which seems almost impossible if one is shut down until failover (my thought was periodic rsyncs.) Perhaps creating a FS to direct all files to for the master/slave would be the only way around that.

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Fedora Servers :: Build A 3 Node Web Server Cluster To Run A Php Application ?

Feb 24, 2011

I need to build a 3 node web server cluster to run a php application. Since the app requires users to login (which means a session state is to be maintained), I will be sharing sessions save path, I also need to share the application directory across 3 nodes. I having trouble deciding which cluster file system to select.

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Red Hat / Fedora :: Install Cluster On Servers - Validate A Multicast Address Before Using It?

May 19, 2011

I am trying to install a Red Hat cluster on my servers. In order to configure an heart bit between the servers I must give a valid multicast address. I wanted to know if there is a way to validate a multicast address before using it. For example if it is already in use i don't want to use it.

I read a little about it and there is a Perl module called IO::Socket::Multicast: [URL] There is a tool called mcasttrest.pl: [URL] Oracle use it to test multicast. But I am not sure what will do the trick in Red Hat cluster.

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Server :: Cluster Heartbeat - Add To Cluster.conf?

Sep 3, 2010

configure a separate NIC for the heartbeat. what i need to add to cluster.conf to achieve this?

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Server :: Cluster Storage With The Rock Cluster Storage Operating System?

Jun 8, 2010

I am trying to do the cluster storage with the Rock Cluster storage operating system . I have install the rock cluster on the main server . and I want to connect the client with the PXE boot . when I starting the client then it boot from the PXE boot into the mode of compute node. but it ask the where is to be stored the I have give the path..then server says that not able to find the directory path.

Steps:-
1) insert-ethers
2) client is started with the PXE boot.
3) it detects the dhcp .
4) At last it demand where is to be started by cd-rom, harddisk ,nfs etc.

then I started with the nfs and I have given the lanIp of server.and server is detecting the client but client is not finding the filesystem directory. into export partition directory but it is not taking path.

PATH:-
/export/rock/install it is not finding this path then it is not able to start the o/s from PXE boot..Is there any solution and manual of rock or anyother solution then u can reply to me...

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Ubuntu :: Check My Mobile Balance With USB Stick?

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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Fedora Servers :: Put Together A Sort Of Home "cluster" System?

Mar 5, 2011

I was wondering if and how it would be possible to put together a sort of Home "cluster" system. pecifically, I wanted to make it so I would have a central server and a few computers, where the central server holds the home folders and settings of each user, and each user can log in to any of the computers using a standardized login (into the server), where anyone could log in with their account on any of the few computers - and their home folder (Desktop, Documents, Music, etc) would automatically be there.

Also if possible, would there be some way to centralize the applications that show up on each "client"?

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Ubuntu Multimedia :: [Pulseaudio] Change Audio Balance In Terminal?

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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