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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0answers
121 views
Set total memory limit with Torque
I run a moderately sized cluster and I am having a queue problem. For example I have a node with 128GB of memory and a program that I set the amount of memory per core. So for example if I set memory ...
0
votes
2answers
122 views
wall command + broadcast message not appears on second cluster machine
I have two cluster solaris machine ( machine1 , machine2 ) I have connection between two machines ping and ssh work fine ( cluster is fine )
more /var/tmp/mesg
TEST
I execute the following ...
0
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1answer
171 views
Utilising a Magento server cluster to drive hot reindexing
We've asked a similar question in the past, basically we have a very large Magento store with 500000 products which are currently reindexed once a day, during the night.
We'd like to speed this ...
1
vote
1answer
111 views
Hyper-V Manager/Server failover/redirections
I have currently one Hyper-V Server 2008 R2 server installed, it's successfully running 4 VM's, but memory/RAM is starting to become sparse. I actually have a 2nd machine available, so my great idea ...
0
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1answer
198 views
How to route, using Linux, from nested private subnets to internet [closed]
In our departement we have a blade system with one master node and four slave nodes that are connected to the master node. The system uses its own subnet (192.168.1.x) and only the master node is ...
2
votes
1answer
292 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 ...
1
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0answers
359 views
Cluster fails because of network loop
We have two hosts running 2008 R2 and Hyper-V. iSCSI SAN using a Equallogic 6k and ps4000 pooled together. They are connected to two Dell 6224 switches. I have one VLAN for the iSCSI and then another ...
1
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2answers
117 views
Cloning IP address and/or MAC address for server fail-over
I am currently providing some web applications to my customers (apache/php/mysql on Windows server). I'm looking to provide some sort of fail-over server in the case my server has a hardware failure. ...
0
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1answer
76 views
delete all files on all nodes on a RedHat cluster?
I am developing a program that runs on a cluster and writes a lot of short bits. First, it outputs to the node's scratch directory; when it is done, it rsyncs the files to a hard drive and then ...
0
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0answers
33 views
Re-Ask - why would adding a crossover private nic cause IP address resource fail? [duplicate]
Possible Duplicate:
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 ...
1
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1answer
110 views
Prevent users running processes on cluster head node
What ways are there to prevent users from starting long running, resource intensive processes on the headnode of a Rocks cluster?
I've tried:
asking politely
setting the nice level in limits.conf ...
3
votes
1answer
409 views
Shared Block Device File System (iSCSI)
I wanted some advice on a file system to use on across 5-10 servers that have a shared block device (iSCSI), GlusterFS and LusterFS seem to be it, but they dont say anything about shared block device ...
0
votes
2answers
244 views
Move clustered MSMQ storage location
We have a two-node active/passive Windows 2003 cluster running MSMQ among other things. Windows picked the Quorum drive to store the queue messages, but this drive has VERY limited disk space. How can ...
1
vote
1answer
201 views
Percona XtraDB Cluster with GlusterFS
We are deploying a GlusterFS cluster with 4 nodes, and we want to deploy the Percona XtraDB Cluster on top of it with 4 nodes, each node will have a mounted folder from the GlusterFS, each mount will ...
2
votes
2answers
302 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 ...
0
votes
1answer
51 views
What's the best management distro for xCat? [closed]
I want to deploy a iDataPlex cluster but using only free software with xCat. The xCat start guide uses Red Hat Enterprise Linux 5 in the management node.
What's the best free distro to install ...
1
vote
1answer
62 views
Manaul SQL cluster failover on 2008R2
I need to do a restart of the clustered SQL instance to fix a problem with tempDB and i am not sure of the easiest way to do this. We have just upgraded our servers to Windows 2008R2 running SQL ...
1
vote
1answer
213 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 ...
2
votes
2answers
486 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, ...
0
votes
2answers
50 views
Adding MySQL servers/ data nodes into database clustering without restarting mysql cluster
I currently have mysql clustering up and running. For high scalability is there a way to include either mysql node, data nodes, or management nodes without restarting the entire cluster. I wish to ...
0
votes
0answers
326 views
Member Status: Inquorate in RHEL 5.6
I've encountered a strange issue.
I had to change the time on my Linux RHEL cluster system. I've done it using the following command from the root user:
date +%T -s "10:13:13"
After doing this, ...
0
votes
1answer
284 views
Plesk CP with a linux cluster
I've managed to start a project where i should be implementing a linux cluster mainly for webhosting.
I need to run plesk on top of that cluster in order to provide cps to customers but there seems to ...
1
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1answer
212 views
Linux HA - Best Heartbeat hardware solution
Hi all I would ask anyone what is the best layer 2 medium for heartbeat in Linux and how it's best configured.
More precisely I've been thinking about a dedicated NIC for that purpose but then i ...
1
vote
2answers
4k views
How to setup STONITH in a 2-node active/passive linux HA pacemaker cluster?
I am trying to setup an active/passive (2 nodes) Linux-HA cluster with corosync and pacemaker to hold a PostgreSQL-Database up and running. It works via DRBD and a service-ip. If node1 fails, node2 ...
-1
votes
2answers
153 views
Server Cluster Design/Setup [closed]
OK So I am not sure if this is posted already but let me explain my goal and what I am trying to do. Really need some help on this as I am not really linux or server savvy yet. I know the basics with ...
0
votes
1answer
188 views
Clustered MSMQ can't send to queue in another forest
I have MSMQ running on a two-node Windows 2003 cluster. When I try to send transactional messages to a queue on a Windows 2008 server in another forest, the messages get stuck in the cluster's ...
1
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0answers
50 views
MySQL cluster data node replacement
I have a MySQL cluster with 2 data storage nodes running from last 2 years.
Just recently I have observed a hardware issue in one of the nodes (data storage). I may need to replace this node with new ...
2
votes
1answer
285 views
Ganeti and automatic failover
I'm building a simple 2-node cluster with Ganeti+DRBD... What is the recommended way to setup automatic failover?
I'm used to Heartbeat, but they say it should be avoided with my setup.
0
votes
1answer
429 views
Best RAID setup for DRBD
I would like to setup a two nodes PROXMOX cluster with DRBD storage. The nodes will be connected by gigabit ethernet. What would be the best storage setup in terms of reliability, performance and ...
1
vote
3answers
463 views
Cloud Storage as a File Share Witness?
Does anyone know if there is a service out there that can be used as a file share witness for a Windows Server 2008 R2 Failover Cluster File share witness?
I have a two-node cluster but no good place ...
0
votes
1answer
409 views
How to run multiple Heartbeat/Corosync/Pacemaker clusters in the same network? (Quorum)
We intend to run several components to run a web site. Like a load balancer, a cache and a couple of web serserves. To avoid single-points-of-failure we intended to use Heartbeat/Corosync/Pacemaker ...
-2
votes
1answer
185 views
Boost libraries ! :( [closed]
I am in the process of running some tests on a cluster which has CENTOS 5 x86_64 kernel 2.6.18. I need to install a software there which needs boost>=1.42. I have looked around but cant seem to find ...
5
votes
4answers
2k views
Ganeti vs Proxmox [closed]
I'm system administrator in small software house. I'm going to virtualise our servers. The main reason for doing this is providing highest possible uptime, but probably it will also increase resources ...
0
votes
2answers
215 views
Calculating the power of a cluster vs a single workstation [closed]
For the same price we can get either
Worktsation which is 2 x 6 core Xeons 3.4GHz, 128GB RAM, 600GB SAS RAID 0
= 12 Cores, 128GB RAM
Or
Cluster 8 x (4 Core i7 3.4GHz, 16GB RAM, 250GB SATA, Intel ...
-1
votes
1answer
349 views
Configuring a Beowulf cluster with Mosix
Here's the situation: We're trying to build a Beowulf cluster using Mosix. At first, we're testing everything on VMWare, but we want to deploy it on actual hardware in the near future.
However, it ...
0
votes
0answers
177 views
Blazeds with Jboss Clustering ( Mod_JK with SSL )
We are running our flex application in jboss clustering environment with the help of Apache mod_jk(Apache Web server as front end with mod_ssl enabled). We are using the SecureAMFChannel as we deploy ...
1
vote
1answer
114 views
OpenMPI in SGE fails when not observed
I know the topic is weird but so is my problem. On our cluster we have SGE with OpenMPI compiled for tight integration. When I set it up it worked just fine in my tests and so far there have been no ...
0
votes
1answer
219 views
SQL Server 2005 SP3 Failover Cluster Node Replacement Service Pack
2-node SQL Server 2005 SP3 (9.0.4226) Failover Cluster running on Windows Server 2003 R2 x64 SP2. My passive node suffered a RAID failure on the OS partition. I evicted the failed node, rebuilt it, ...
0
votes
1answer
1k views
WebLogic cluster, determine node from JSESSIONID cookie
We are running a WebLogic 10.3.4 cluster with three managed servers (nodes). We do not use session stickyness, but session replication across the cluster and everything is working fine. When trying to ...
0
votes
1answer
175 views
Replacing teamed NIC's in SQL server DB 2-node cluster [closed]
I currently have a 2-node MSSQL cluster, each with 2 x Broadcom 5709C Dual 1Gbps NIC's with TOE and iSCSI offload, teamed together to provide connectivity to the network and the supporting SAN, ...
1
vote
1answer
233 views
DPM 2010 - Performance when backing up Hyper-V Cluster
At my company we are backing up about 150 Hyper-v VMs in an Hyper-v cluster using CSVs (Windows 2008 R2).
The space used by these VMs is about 18TB on SAN storage and 1GB network.
We are using DPM ...
0
votes
1answer
152 views
Postgresql 8.3 out of disk space on Debian Lenny
I didn't pay attention when i installed postgresql with aptitude, but it installed the databases in the wrong partition.
Now my partitions look like this:
# df -h
Filesystem Size Used ...
3
votes
3answers
80 views
Clustered machines management
Our startup firm runs multiple services hosted on JBoss AS. Those services are distinguished by their business and are clustered for the sake of high availability and scalability.
What I'm looking ...
5
votes
3answers
691 views
Upgrading ubuntu release on a cluster of servers
I have a cluster of about 50 ubuntu nodes which are currently running maverick release. I'd like to upgrade them to oneiric, but I'm having a difficulty choosing the right tools.
I know ubuntu has ...
1
vote
1answer
189 views
Remotely connecting to hyper-v hosts from another host in the same cluster sometimes shows red error
We have a hyper-v host cluster with relatively new hardware. The hosts and the VMs on them all work good, except when I connect to any hyper-v host from another host in the same cluster (remotely ...
2
votes
1answer
637 views
Windows Cluster Fails after Power Outage
First, we have a Windows 2008 R2 Two Node cluster running HA Hyper-V and DHCP. We utilize a back-end Dell MD3000i iSCSI SAN for storage. All of the networking is done via redundant switches and MPIO ...
1
vote
0answers
166 views
I'm building a diskless php-fpm cluster, unpredictable /etc/statetab and looking for other building strategy
I'm building a 24 nodes php-fpm farm using three Supermicro MicroCloud (8 nodes in 3U, nice and tight)
At first, I was planning to have each of them nodes have a disposable HDD with CentOS on (6 or 5 ...
0
votes
1answer
182 views
Is it possible to install SQL instances with different Collations in a SQL Cluster
We have a two node active-active SQL Server 2008 Cluster. Running on Windows Server 2008 R2.
The three excisting instances have Latin1_General_CI_AS as the Server Collation. I need to add an instance ...
0
votes
1answer
255 views
Pacemaker behavior colocation Xen domU resources, is this expected?
I am using Pacemaker+OpenAIS+Corosync on OpenSuSE 11.3 running Xen, and am trying to determine if the behavior I see when colocating Xen domU resources is expected or not.
Cluster nodes / dom0:
...
3
votes
1answer
988 views
High Availability NFS Server (Heartbeat/DRBD) long hang on clients when takeover occurs
We have a High Availability NFS environment using DRBD, heartbeat and nfs exposed to clients (Simular to the following https://help.ubuntu.com/community/HighlyAvailableNFS ). This seems to be a ...
