A computer cluster consists of a set of loosely connected computers that work together so that in many respects they can be viewed as a single system.

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Does Windows Server 2008 R2 standard edition support cluster?

I want to install sql server 2008 r2 edition in a cluster environment. Can I use Windows Server 2008 R2 Standard edition? Thanks.
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mirrored filesystem across a few servers

I'm looking for a solution to mirror or replicate one directory (or one filesystem) across a few Linux servers. Ideal solution would be one, which permits all servers read-write access. I also want it ...
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347 views

HA Cluster having tower 4U server with SAS

I'm a little bit confused in here.. I want to have 2 node cluster with shared storage. I read all wiki page about HA cluster. Now in my head there's a scheme like: So we have two 4U tower servers ...
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4answers
391 views

Hosting Very High bandwidth sites

I have been tasked with scoping out infrastructure requirements for a site that will be pulling over 10 million plus unique visitors per month. This site will be several gigs in size content wise. I ...
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3answers
235 views

I'm thinking n+1 in a hyper-v r2 cluster managed by scvmm is not a great idea anymore

Around here the clusters (not hyper-v clusters) are typically configured as n+1, so they are asking me to create a n+1 hyper-v r2 clusters. These will configured with both csv's and live migration and ...
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2answers
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Can I use ext3 as a shared fs if I add a lock manager?

I need a cluster filesystem for an iSCSI device. The problem is that the servers to which it is connected generate datafiles which must be read by every other servers. Except for the writing and ...
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1answer
692 views

Why do Layer 7 load balancers configuration not require any client configuration changes?

For example, for haproxy (layer 7) load balancing, you only need to configure the "real servers" or "backends" behind the VIP (i.e., cluster IP). E.g.: listen smtp 192.168.3.10:25 mode tcp ...
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2answers
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Windows Server 2012: Possible to have High Availability and reliability without needing a SAN, but connecting servers together?

I have some questions below -- tried to word them the best I could. If you downvote my post, please make a comment explaining why you downvoted so that I can try to do better when I post in the ...
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3answers
926 views

How cluster server works?

Now, I have a server running php + Mysql, but my server loading is very high, I want to start up one more server to reduce the workload, what should I do? Thank you.
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1answer
134 views

What are the options for a HA system?

I'm looking into creating a HA Linux machine for my client's website. What are the main options I have, or a place/article where I can find out more? I would LOVE if it was a single-image, too, so ...
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1answer
234 views

Best method to share ISCSI lun across cluster of app servers

I'm in the process of migrating our cluster to new hardware. We use bare metal servers, no virtualization. Currently, we have around 30 "application" servers. When we make an update, we push the ...
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4answers
386 views

Newbie questions on MAC and high availability failovers

I am reading about High Availability and I can not understand the following I read: On failover the primary IP migrates to the backup server BUT so must the MAC address. Specifically I read that ...
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How use DNS server to create simple HA (High availability) of my website?

Welcome, How can i use DNS server to create simple HA (High availability) of website ? For example if my web-server ( for better understanding i use internal IP in real it will be other hosting ...
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3answers
243 views

MSSQL Two Database Servers 1 Database

We have two servers. They are both HP DL 380 G6 servers with the same hardware and specs running Windows Server 2008. Currently the second server is a warm standby for the first with an automatic fail ...
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1answer
599 views

Microsoft fail over cluster and storage with raid card

I am looking for some input on a Microsoft fail over cluster implementation on 2012. To use the storage and pools it apparently has to have JBODS if your using a raid card. But the LSI card we use ...
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2answers
538 views

why would adding a crossover private nic cause IP address resource fail?

2 node Win 2008 R2 quorum cluster Configured 192.168.0.0/24 "public network" Configured cluster MSDTC Installed SQL 2008 R2 cluster instance Manually failover groups - OK Reboot server w/o failing ...
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2answers
3k views

Farm Deployer not working in Tomcat Cluster

I have setup apache-tomcat clustering(Ubuntu Server) and I used tomcat supported clustering technique with mod_jk following the link. I've setup with One Load Balancer and Two web servers. The major ...
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2answers
2k views

How do you setup a SQL 2005 cluster in amazon EC2?

I am trying to setup a highly-available DB architecture in an EC2 servers. We are forced to use SQL 2005 for now. What kind of solutions would work in this context? Has anyone done it? I can't ...
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3answers
855 views

Sharing SSL Certificates in a Cluster

Hopefully a very simple question, if I wanted several servers providing the same service to hold a certificate (e.g interface.internal.org) would the procedure be; Generate Public/Private Pair on ...
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3answers
175 views

Maintaining software as a user (on a cluster)

Every cluster of computers I've encountered suffers from the same problem: its software is outdated. Naturally, one has the ability as a user to install everything from source in the home directory. I ...
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2answers
974 views

Clustering Microsoft versus Linux

Does anybody have experience with both Linux and Windows failover redundancy clusters, and if so which do you prefer for file server and/or web server? For a little background. We set up and ...
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3answers
638 views

What issues are there installing a SQL 2008 on Win 2008 cluster?

As we all know, the cluster setup, maintenance, and underlying mechanisms have been changed extensively for SQL 2008 compared to 2005/2000. Although this fell under the Storage Engine group I was ...
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2answers
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Alternative to GlusterFS [closed]

I need to create a redunant 2-linux machines configuration so that the files on server1:/dir are in sync with the files on server2:/dir I managed to configure GlusterFs to do this but while it works ...
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2answers
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How to make a DHCP server on virtual machine serves other virtual machines(on different physical machines)?

I'm building a virtual cluster with VirtualBox and Opensuse. I have 10 physical machines and need several vms on each. The virtual machines are supposed to be in a "private" network, but still have ...
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3answers
683 views

Is it possible to share the same folder name on two separate drives?

I have a Windows 2003 cluster that I'm trying to migrate to a new SAN. One of the drives that I'm copying data from has a shared folder (J:\SharedFolder) I need to copy all data from J:\ to T:\ and ...
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257 views

What makes Lustre faster and more scalable than NFS?

I have read in various places (e.g. here and here) that NFS' I/O performance does not scale, while Lustre's does, and that Lustre can deliver better I/O rates in general. There seem to be various ...
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1answer
420 views

Using ionice Over Cluster

Background: I use a computing cluster at work (4 slave nodes and 1 head node) that uses the SGE job scheduler. Recently we've been running jobs that do some heavy IO and it has been slowing down ...
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2answers
889 views

Completely Remove an Exchange Cluster even though it's cluster info is long gone?

With the proviso that I realize I screwed the pooch on this, here's my situation. We used to have an Exchange 2003 two-node cluster. Several years back we migrated to Google Apps. When we did that, ...
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1answer
6k views

Tomcat Cluster Farm Deployer issue

I have setup apache-tomcat cluster with mod_jk on ubuntu server. I have some issues with FarmDeployer which deploys war files to other web servers in the cluster and I got some hope that it works as I ...
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3answers
935 views

Handling user uploads to a web server cluster

We have a number of Linux web servers behind a hardware load balancer, which serve a single website. The need has arisen for visitors to be able to upload files. The files are typically 300-700KB in ...
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2answers
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What is the best way to create a failover cluster for my IIS website?

Our eCommerce website currently runs on two servers: SQL server: 2005 x 86 on Windows Server 2003 Standard x86 with a single dual core processor and 4 gb of memeory IIS server: Windows Server 2008 ...
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4answers
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Cloning/copying traffic from production web cluster to test web cluster

We have 10 machine web cluster with approximately 1500 req/seq. How can we copy/clone all user traffic that comes to this production cluster in order to test new version of software, which is ...
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setting up a cluster

I have 5 PC(s) connected over a LAN through a switch. I want to connect them to form a HPC cluster. The OS may be any Linux version (currently I have installed Ubuntu 8.10, 9.10 and Fedora 10) Purpose ...
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Blade Server Cluster High Availability Questions

I have a poweredge 1855 blade server with 10 blades I am trying to setup the system to handle: 1 plesk server for mail and dns + dns replication to another machine 1 system for httpd & mysql 1 ...
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3answers
917 views

The effort and details for setting up a clustered, load balanced instance on Amazon's EC2

I've been trying to gather all the pieces together for setting up a load-balanced cluster of three servers (2 for Web nodes and one for MySQL) as a LAMP stack on EC2. This is only to run performance ...
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1answer
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Redhat cluster Vs Pacemaker Vs Gluster Vs Sheepdog

Changing the entire question as earlier one was very confusing. I have been exploring different clustering system to run Virtual machines on two different machines on LAN with high availability. ...
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3answers
202 views

Storage cluster for inexperienced admin

I'm a relatively inexperienced server admin who primarily works with Windows and a little bit of Linux. I'm the only admin of a small organization. I'm looking for a way to have a high-availability ...
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1answer
431 views

Windows Server 2003 on Virtualbox: Disk becomes unavailible after adding it as a cluster resource

I created a test cluster in Windows 2003 running on Virtual Box. The virtual disk to be used as a cluster resource has been changed to type shereable using VBoxManage command line utility. On that ...
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1answer
2k views

relation between heartbeat,openais,corosync

i am planning for high availability on lucid ubuntu, i started with drbd after a simple configuration on drbd I went to heartbeat and had a simple config on it too. on drbd official site a document ...
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Building a SAN with a MD3000(i)

I've been by here as a lurker a few times in the past, and have found it nothing but helpful, now I have a question of my own. I'm charged with creating a VM cluster solution and have been looking ...
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3answers
269 views

Shared storage solution for ~200 compute nodes

I have ~200 compute nodes that I run my programs on. When these programs are run, these nodes will need access to a shared location where my data is stored. I need a storage that can house ~3TB of ...
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2answers
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Can I use domain controller as one of my nodes in my cluster environment?

I want do some SQL Server failover cluster experiment on Windows 2008 R2 in VM. Now I created a domain controller(as DNS server too) DC. Also I created a server server1 and added into the domain. Can ...
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4answers
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Are there any good guidelines for building a KVM Cluster on Red Hat

I am looking to understand how other people have built clusters of KVM host servers. I am especially interested in how people solved the problem of having them automatically failover if one node dies? ...
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2answers
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Novell Cluster services monitoring with Nagios

I am trying to find plugins or configuration settings to monitor Novell clustered services and was wondering if anyone has done this before or has any info they can share The system I am trying to ...
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1answer
26 views

Using a JBOD for redundant NFS

I have a Xyratex sp-2224 JBOD enclosure (dual controller) and a pair of Dell servers with SAS HBAs installed that I'm looking to utilize in a redundant NFS cluster. The hardware isn't what I'm ...
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2answers
1k views

Multiple NIC arp issue

I'm troubleshooting an issue on Centos 6.4. I have a few systems setting up for greenplum. Each one has two "interconnect" interfaces connecting to an isolated subnet. It is like a cluster ...
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2answers
958 views

Graphite/Carbon cluster returning incomplete data

Trying to setup a Graphite/Carbon cluster. I have an elastic load balancer that directs traffic between two nodes in my cluster, each with one web app, relay, and cache. In this example, I sent 1000 ...
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1answer
121 views

puppet templates: possible to print the size of an exported resource array?

I'm writing a puppet module for ocfs2 and making use of exported resources to populate the definitions of all the cluster nodes in the config file on each cluster. This all works well. The cluster ...
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1answer
862 views

Postifix SMTP Load Balance

I want to load balance outbound emails between 3 post-fix gateways for sending mails only reason is to use multiple different source IPs to increase throughput & inbox delivery. Each gateway ...
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1answer
215 views

Should a SQL Server tempDB partition be shared by the cluster?

We have a 2-node SQL Server 2008 RS cluster. The data and log partitions are shared among the cluster nodes. Does the tempDB partition need to be shared as well, or will local server node storage ...