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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61 views

What is a cluster IP? [closed]

I am in process or configuring remote web host service and I have option of configuring should I use cluster IP. Could some please explain what a cluster IP is and what are the benefits of using ...
0
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5 views

Mysql cluster 7.3 giving error while installation [duplicate]

I am installing mysql cluster 7.3 on windows 8. In the last step of installation when i have to "Deploy and start cluster" its giving the error msg "Command [u'net','start','N49'] returned non-zero ...
0
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23 views

Choosing a scheduler and WMS layer for cluster

I'm trying to decide between HTCondor, TORQUE-Maui, EMI-gLite. It seems that these are functionally the same with regards to the ease of implementation, community and platform support (my cluster is ...
0
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1answer
52 views

Session clustering with Jetty-runner 8.1.14.v20131031

I'm using Jetty-runner 8.1.14.v20131031 and I would like to know what's the easiest way to achieve session clustering between multiples running instances.
0
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1answer
80 views

Can I publish to multiple distinct etcd clusters from a single host?

I have a number of distinct etcd clusters, I would like to be centrally controlled: I have multiple distinct etcd clusters. Hosts in one cluster should not have any access to config in another ...
2
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1answer
141 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 ...
0
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2answers
83 views

Sharing a SAN LUN across 2 clients

I have an ISCSI SAN that we purchased to store images for our cluster (2TB of images). After reading, we probably should have gone with a NAS rather than a SAN, but back to the point. I'm going to ...
0
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0answers
67 views

Cannot sent messages to Clustered MSMQ resource using NAT IP address

I'm running MSMQ as a clustered resource on a Windows Failover Cluster. We want to send messages to the queue over HTTP using a NAT IP Address for the queue. On a non clustered environment, this ...
0
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18 views

Server 2003 Cluster / Basic Assistance (Exchange 2003)

ServerFault team, I'm in need of moving an Exchange 2003 Information Store that's part of a Server 2003 cluster. Please forgive me, that I'm not where I need to be with this. The information store ...
1
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0answers
144 views

SQL Server 2012 Cluster BSOD

I'm trying to set up a SQL Server 2012 SP1 "AlwaysOn Failover Cluster Instance" on top of a Windows Server 2012 R2 cluster (cl01) consisting of 2x 2012 R2 nodes (sql1 and sql2). Hosted on VMWare ESXi ...
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1answer
37 views

database cluster fail over [closed]

I planed to develop a customized HA program for MSSQL, but I got a question when reading some articles about cluster. When master is down, then slaves vote for a new master, and the new master will ...
1
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1answer
117 views

Openswan High Availablity

I have configured hardware(juniper) to software VPN(openswan) tunnel. I want to make openswan highly available. I was wondering if i can configure openswan cluster, but I didn't find anything ...
2
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1answer
409 views

clvmd problems during the RHEV cluster deployment

We are deploying Red Hat Enterprise Virtualization cluster and we faced a problem attempting to start clvmd service after the lvm partition creating. The following has been completed successfully: ...
1
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0answers
30 views

pacemaker cluster heavy load with sbd and noop scheduler

Anybody have experience with nood scheduler? i know the sbd process is a real time process, so with default linux io scheduler cfq, the sbd process works very well on high io heave load. The noop ...
2
votes
1answer
119 views

Can I run multiple nodes of Cassandra on my mac without a virtual machine for each?

You can see in the doco here that setting up each instance of Cassandra requires a new 'node'. My question is - to run a cluster with multiple nodes of Cassandra on my Mac (Running Mavericks) - do I ...
1
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1answer
110 views

How can I move the data files for a VM to another location?

We have a cluster of 3 x 2008 R2 physical hosts running Hyper-V. How do I safely move the VHD(s) and accompanying XML files, etc, for a specific VM to a new location? I want to keep the VM with the ...
1
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0answers
131 views

RabbitMQ and federation. Cross datacenter virtual queue?

I'm building a system that sits in two datacenters for resiliancy, using a live / standby model. The system requires a message queue that delivers messages for processing by the system backend. My ...
2
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0answers
45 views

Multiple httpd with JBoss cluster: provide httpd HA

I have a working configuration like this: +-----+ +-----+ +-----+ +-----+ | i1 | | i2 | | i3 | ... | in | JBoss Cluster +--+--+ +--+--+ +--+--+ +--+--+ | ...
0
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0answers
46 views

SOLR sync DIH statatus on cluster environment.

I have the solr cloud environment configured, up and running, no issues at all. But now I need to run a delta import in a loop.. every time this import process finished start another one. ...
1
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2answers
2k views

How to set up a pacemaker cluster for active/active scenario and how it works?

I try to set up my first pacemaker cluster as a FTP Server. There are two Server installed with a fresh centos 6.5 and proftpd First step was to install pacemaker and some configuration Tools with: ...
0
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1answer
38 views

Dev mysql node with Percona

I have been tasked with creating a Development mysql instance, We currently have a 7 node Xtradb cluster, is there any way to have this node a few hours behind, or not allow replication back to the ...
1
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1answer
51 views

Failover clustering or Network Load Balance on windows server

I have 2 servers with Windows 2008 R2 standard OS. I need to create a cluster in case on of the servers goes down ; so the other one will continue provide services. The services we mostly use are a ...
1
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1answer
84 views

Does Win 2012 Standard Edition support clustering of SQL 2012 Enterprise Edition?

Can you cluster SQL 2012 Enterprise Edition on Win 2012 Standard Edition? The features doesn't seem to clarify whether it allowed or not. We are seeing warning “Cluster Nodes Failed" in the SQL ...
0
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3answers
367 views

Windows Server 2012 Hyper V Clustering Live migration Hot Failover

We are thinking of implementing Hyper V Clusteriazation on Windows server 2012 servers. We aim to use the Live migration feature to eliminate downtime when one of the servers fails. My question is: Is ...
0
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0answers
42 views

SQL Server 2008R2 multi instance Cluster with mutual active/passive

I'm looking for a way to set up an 2008R2 SQL Server with an multi instance Cluster which serves mutual active/passive. So basically two nodes where each one holds half of the databases active and ...
1
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1answer
98 views

Best way to deploy changes in an HAProxy cluster

I have a two-node HAProxy cluster with Keepalived to provide high availability and redundancy. Now I'm trying to figure what is the best way to do changes in the configuration of my HAProxy's. Is ...
0
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1answer
44 views

Is a SSI-style cluster possible with Windows Server 2012?

I use an application that does CPU intensive multithreaded optimization which is currently run on a hyper-threaded Quad Core machine that it just pegs at 95-100% utilization across all cores for ...
2
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2answers
542 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 ...
0
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1answer
247 views

Create Cluster Windows Server 2012 R2

I have two virtual machines (Node1, Node2). Node1 set DC, Node2 connecting to domain.enter image description here. I'm trying to create a cluster, on Tab "Select Servers" add the Nodes. An error ...
1
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1answer
39 views

Update computers on private network

I have a small grid of computers that form an analysis cluster. One master node with internet on eth0, and a couple of private static IP workers connected to a switch. The master is also connected to ...
2
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0answers
40 views

SQL Failover Cluster IP Migration

I have a four node cluster setup which I need to migrate from subnet A to subnet B. The cluster has roughly 12 instances running on it. I've found articles to update the SQL Cluster IP, but I've got ...
1
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1answer
73 views

Sharing information between nodes in Beowulf Cluster

I am setting up a beowulf cluster and I've been reading that it might be necessary to make the home directory of the cluster users shared between them (assuming this users are local to each machine). ...
0
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2answers
227 views

Just a few questions about Hyper-V virtual machines and clustering

I have been using Microsoft’s Hyper-V technology for a little while now, but I am just now dipping my toe into clustering. In particular, I am trying to implement a fault-tolerant SQL DB. This ...
0
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1answer
77 views

Windows failover cluster - virtual node with multiple Client Access Names

I recently encountered a customer environment in which they had failover cluster where one of the virtual nodes had more than one 'Client Access Name' (i.e. more than one IP address and DNS name for ...
3
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1answer
142 views

Choice of distributed filesystem for intensive reads and writes

I have a series of servers (HP ProLiant, 34 servers) each of which with 500 G of hard drive space. These servers are part of a computational cluster which runs processes that roughly fall into two ...
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0answers
25 views

Difference between all servers in one cluster and more than one cluster with servers? [closed]

Not sure I understand what´s the difference or how it works when servers a running in one cluster or if there are more than one clusters with servers in it - regard High availability & Load ...
0
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1answer
97 views

SNMP walk on Virtual Ip not working? what can be the reason

I have two MSSQLcluster, at a time VIP [virtual ip] that will be assigned to on of the master. The problem is when i try to do any snmpwalk on VIP from a different machine its returning me a time out. ...
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0answers
50 views

Number of public ips for wackamole

I am trying to configure a highly available cluster consisting of three boxes with public ips. How many public IP addresses will I require for this? Can I configure spread on a private NIC and manage ...
0
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2answers
43 views

How to broadcast a command on Windows

I am going to frequently deploy different versions of a program on a cluster of Windows machines (mostly Windows XP), so I am willing to use a command-line broadcasting tool (either built-in or ...
2
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1answer
105 views

Galera Cluster starting backup can't find innobackupex in the path

I am trying to get a Galera cluster running. I have the first node up and ready for connections. My second node, however, when trying to run wsrep_sst_xtrabackup gets the error "Can't find ...
0
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0answers
140 views

How should I setup outgoing smtp for app emails on load balanced Windows servers

I've recently setup a small group of servers to host a couple dozen asp.net applications that send out emails for things like customer registrations, purchase receipts, error alerts, nightly batch ...
0
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0answers
80 views

Balanced WCF- Local MSMQ or MSMQ Cluster

Hello I need a professional advice on MSMQ. The setup is the following: SOAP Client -> SOAP Message -> NLB WCF Web Service Node -> The node sends the message to a local MSMQ transactional queue. ...
0
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1answer
143 views

pbs check how much cpu a job is using / job % cpu usage

On a cluster a job is submitted to run on N CPUs. qstat -f doesn't show how much CPU resources the job is using other than the time. How does one check whether 100% of each CPU power is used? It is ...
0
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1answer
142 views

Is there any way to achieve a network fault-tolerant print server?

Our infrastructure is actually composed by a main datacenter in headquarters, where are centralized almost all of the services and aplications, and a smaller datacenter, in a building accross the ...
0
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0answers
31 views

Matlab & clusters & batch

My school will get one small cluster for Matlab. The cluster will run Linux and "MDCS" - MATLAB Distributed Computing Server (http://www.mathworks.com/products/distriben/). I'm "trying" to understand ...
1
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2answers
513 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 ...
0
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0answers
318 views

No disks were found on which to perform cluster validation tests

I am trying to make a cluster of two Hyper-V machines running Windows Server 2012. There is a SAN available in which I have created several partitions to use such as J drive, K drive L drive etc. ...
0
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0answers
204 views

IOException: Operation not permitted; No faulty members identified

I am running a tomcat cluster with three tomcat instances and one Apache server. I have all MAC server except one RHEL box, on RHEL server my tomcat-cluster is not starting properly which is causing ...
0
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1answer
303 views

Apache with mod_jk with glassfish instances, large number of established connections for low number of users [duplicate]

I making a tuning for our production servers for a portal, we have 4 servers, 2 for web and 2 for app, and there is a firewall before and after web servers (so yes there is a firewall between app and ...
0
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0answers
58 views

Windows program started with conhost.exe has no access rights to network shared drives

We clustered a Liferay portal that runs on Glassfish application server (java). The newest Glassfish works in the way that it has a central node that can start other nodes on other computers with ...