discusion related to cluster mecanism.

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How to replicate KVM for DR purpose?

I am looking to replicate multiple KVM servers from one data center to another data center. What steps with specific commands to be used to replicate one server so I can use that for others. Thanks ...
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52 views

Cluster Lock Manager without TCP/IP

I have 2 linux sharing same SAN disk LUN. There are many cluster files systems to manage lock/unlock. But all of them are using a seperate TCP/IP comminication. But I need a cluster lock manager ...
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About mem and vmem

I am working with a cluster machine running under linux. I have a shell script that uses mpirun to submit my jobs to the cluster machine. In that same script, I can choose the number of nodes that ...
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93 views

Microcomputer cluster for stress testing

I'm looking to build a microcomputer cluster at work for stress testing one of our applications, and while I have a little financial leeway, I would like to keep the cost low and the computing ...
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49 views

HA Cluster in Linux [closed]

My question is : Is there any other solution for High Availability Clustering in Linux like RedHat Cluster Suite, or not ? Thanks..
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166 views

Strategies for building distributed computing system with hybrid Mac and Linux systems

I want to build a distributed computing system to run Matlab, C and other programming languages for scientific computing. Now I've several old Mac machines with Lion Mac OS installed acted as web ...
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Getting from proficient to expert [closed]

I've got my vacation coming in and thought I might use that for something useful. Essentially, I've been a Linux user since around 1995 when I installed Slackware 2.0 on my computer and have been ...
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185 views

Running shell script on cluster in parralel

I thought dsh(Distributed Shel) will be a good option but when i ran my shell script across my nodes, I didnt get expected output, dsh -aM -c bash /home/cloudera/bash_script.sh server2@x.x.x.110: ...
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715 views

Script for running sequential job

I started recently to learn using Linux. I want to write a script in bash shell to run a serial job on a cluster. I have been searching for hints and instructions on how to write such a script. I ...
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Kill nohup command on cluster

Last night I launched a command via nohup on a cluster and then closed the connection. Today I would like to kill this job (I know it's still running because output is being generated in an output ...
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210 views

Samba on a Beowulf Cluster

Is this possible? I have only been able to locate resources related to running scientific applications. Any resources would be helpful. Regards
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HAProxy with Roundrobin working only on 2 of 3 MySQL servers, why?

Good day. I'm following this article to configure HAProxy to balance with roundrobin between 3 MySQL servers (db1, db2, db3) in a MariaDB Galera cluster (working perfectly). However I have a ...
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How to benchmark performance and ensure high-availability in a CentOS 7 cluster?

To give you a little context on my question, I'd like to mention that I am writing an essay on high performance and high availability clusters using a 2-node (I know that is not optimal, but it's what ...
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Error starting MySQL in a MariaDB Galera cluster in CentOS 7

I'm trying to setup a MariaDB Galera cluster following this tutorial exactly as it is, and I'm stuck in the Step 7– Initialize the first cluster node, I'm doing so with sudo /etc/init.d/mysql start ...
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36 views

Why did Red Hat drop support for DRBD beginning with RHEL 7?

Does anybody know the reasons why Red Hat decided to drop support for DRBD beginning with RHEL 7, thus favoring GlusterFS as the preferred solution for network-based replication / mirroring in a ...
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quorum disk and heuristic checking in CentOS7 Cluster

In CentOS6,we use to configure qdisk for two nodes cluster to quorate. How about in CentOS 7? I can't find any clue to do the same for it. Help will be much appreciated. Thanks,
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Two Nodes CentOS 7 Cluster clvmd

I am trying to set up two nodes CentOS 7 cluster with clvmd. I added dlmd and clvmd as clone resources in cluster using pcs command. When both nodes are up, dlmd and clvmd can start properly. But ...
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Hadoop cluster and wifi

I have a three node hadoop cluster with out internet. I have WiFi. Can I connect to wifi and hadoop cluster simultaneously?
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37 views

Problems with kerrighed

I heard about kerrighed and i want to use it for rendering with blender because it is a single system image. I tried to install it over pxe like the installation guide from kerrighed.org says. The ...
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76 views

mysql high availablity for LAMP application (ubuntu 14.04)

im trying to achieve HIGH Availability (HA) for a LAMP application(News Portal website) which might be of interest to many unfamiliar users.For files im using Glusterfs (replica) for redundancy ...
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PBS limiting the number of process on a node

I am trying to run a program on cluster. The program can distribute each of the calculation with an corresponding parameter, say k1, k2,...k4, to run on one core. I want to use 4 nodes with 1 ...
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20 views

centos cluster set core/each_program

I'm using unix server (OS: centos5) and I'm using several clusters. Some clusters have 8 cores, other are 24 cores and etc. I execute jobs using this command. qsub -q cluster_name -d $PWD ...
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43 views

CoreOS cluster for development / testing

I'm setting up a CoreOS cluster and want to write a bootstrap script which all developers can run to get a local virtual cluster running. Mostly I'm wondering about etcd, how I can pre-set a few ...
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121 views

Tomcat7 cluster don't replicates session

I have a Ubuntu with 2 Tomcat7 with a cluster configurations. The balancer is Apache MOD_JK. SERVER.XML: <Engine name="Catalina" defaultHost="localhost" jvmRoute="no0"> <Cluster ...
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83 views

Powerful Workstation

I heard about ILM's (Industrial Light and Magic) workstations on which they create models and scenes for a lot of different movies. They have workstations with more than 1024 GB of ram and a lot of ...
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69 views

SGE to PBS/Torque qsub conversion

Hi I am setting up a software pipeline (an extensive bioinformatic annotation tool) that was originally written to submit SGE jobs but I am on a PBS/Torque cluster. Any ideas about a way to convert ...
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43 views

Mysql Cluster Data node not started

I am working on Mysql Cluster in Fedora. I have three Fedora virtual machine. One is Management node and other two are Data node. My Management node started but my Data nodes are not started. When ...
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Is it possible to install RHEV on el6 clustered computer

Is it possible to use Linux (el6) clustered computer can be used as a hypervisor for RHEV 3.3/Ovirt 3.3? Cause, we can not combine RAM/CPU from two or more hypervisores to be considered as a one ...
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187 views

What software should I use to create a HPC (High performance compute) cluster with CentOS 6.5 VMs locally?

I've read about Torque, Slurm resource managers and Maui, Open Grid scheduler, Sonf of Grid Engine but I do not know which is more appropriate to use in a local environment? I've also read that I need ...
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143 views

Job IDs and their meaning/reference

Using Red Hat, I sent few jobs to a cluster and got "job IDs" in return. Using qstat I can see only one is running, one was canceled and the rest are still in the queue. I wrote something like this: ...