The cluster tag has no wiki summary.
0
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1answer
38 views
Ganeti vs Proxmox
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
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2answers
69 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
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1answer
29 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
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0answers
34 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
19 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
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1answer
99 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
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0answers
26 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
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1answer
38 views
Replacing teamed NIC's in SQL server DB 2-node cluster
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, ...
0
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0answers
30 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
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1answer
39 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
61 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 ...
3
votes
2answers
113 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
48 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 ...
0
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0answers
56 views
Scheduled restart for mysql cluster
I have a 3 nodes, 1 replica ndb cluster and I need to restart all the nodes periodically. What do you suggest? What I need is a cron job that will do what I do with connectiong ndb_mgm and calling ...
2
votes
1answer
72 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
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0answers
43 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
35 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
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1answer
80 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:
...
2
votes
1answer
277 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 ...
1
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4answers
187 views
A better inexpensive 2 node cluster
There is a Xen cluster that setup that I really like. It consists of 2 nodes (let's call them 1 and 2). Each node has 2 non-raided drives (A and B). A1 replicates to A2 through DRBD and B2 to B1.
...
2
votes
1answer
56 views
double mount check with ext3
I have two nodes connected to a SAN, and I want to be able to mount an ext3 partition on node B when node A goes down.
I know I could use a shared filesystem, but for simplicity and performance I ...
0
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1answer
44 views
oracle RAC server addition at DR site after DR occurs
DB: Oracle
Server: Physical
OS: Linux 5.5
The production site contains 3 server nodes and will be clustered using Oracle RAC, database replication will be done with the help of Oracle Data guard. ...
3
votes
1answer
96 views
Using PCIe as an Interconnect Connection [closed]
I was researching about connecting multiple server nodes together to share resources. I came up to this page: http://www.plxtech.com/applications/cloud
From what I read, I see this is possible.
...
0
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2answers
34 views
coordinating a script to run on only one of identical load-balanced servers
I have two identically configured CentOS 5 servers (possibly more in the future).
I need to run a cron job on any one of them and that it'll run only on one of them.
I know about RedHat Cluster Suite ...
1
vote
1answer
34 views
Shared block device file system (cluster file system without networking)
Is there any file system that can be mounted multiple times and supports concurrent file access for Linux? Basically I want something like a cluster file system but without the need to have a running ...
0
votes
3answers
172 views
Red Hat cluster: Failure of one of two services sharing the same virtual IP tears down IP
I'm creating a 2+1 failover cluster under Red Hat 5.5 with 4 services of which 2 have to run on the same node, sharing the same virtual IP address. One of the services on each node (called disk1 and ...
1
vote
1answer
29 views
How to limit jobs in an indicated queue in SGE
I have two queues in SGE for different purposes. Each of them has a limit in slots. What I want is to have only a certain number of jobs submitted to a queue waiting even when the other queue is idle. ...
1
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0answers
27 views
Which process is using my NAS?
I have a nas connected to my cluster. The NAS holds all our home directories. When I did a set of experiments last week, saving a 1 GB file to the nas took around 30 seconds. If i do the same to a ...
0
votes
2answers
91 views
How to achieve high availability with MySQL cluster?
This question is not about how to install the servers nor its capabilities, but more of a design question.
So I have a cluster of MySQL servers.
I also have a DNS record "data.example.com".
The ...
0
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0answers
64 views
node.js process won't die on unhandled exception
Running the following server.js:
cluster(app)
.use(cluster.logger(path_to_logs))
.use(cluster.stats())
.use(cluster.pidfiles(path_to_pids))
.use(cluster.cli())
...
4
votes
2answers
167 views
Multiple VPS with mirrored database and filesystem
I've developed interest in VPS clusters lately and it seemed like a great idea to try to set up a multi-VPS setup, which I will describe below. It isn't really meant for production use, but more as an ...
0
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0answers
22 views
Can I delete my configuration files after submitting a job?
If I submit a set of jobs using PBS in this way:
for f in configfiles
do
qsub [options] ./script.sh $f
done
Can I remove the config files as soon as the job has been submitted, e.g.:
for f in ...
5
votes
3answers
137 views
What to use for software-based shared file storage?
The situation: setting up a load balancer
Currently we have all of our servers (running CentOS Linux) in pairs in our data center: each server has a mirroring server. We don't employ any load ...
0
votes
1answer
44 views
Confguring simple MPICH cluster
I am trying to follow the instructions on this site for configuring an MPICH cluster on Ubuntu: https://help.ubuntu.com/community/MpichCluster.
I am new to this and have a very trivial question. In ...
1
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0answers
110 views
xen cluster multiple nodes
I'm looking for information on how to build a Xen HA cluster with multiple nodes. I find lots of information on how to build clusters with two nodes, but that is really not enough. I've built one with ...
1
vote
1answer
202 views
Small fast network with Mac mini server and Promise Pegasus?
I have 7 Mac Pros and iMacs that need to be connected to the same storage. I'm doing non MPI-based numerical modeling so the transfer rates have to be fast but not infiniband fast. I'm considering a ...
3
votes
2answers
21 views
Windows Cluster - Can I failover without disturbing SQL?
I have a 3 node cluster.
All of the nodes are part of Cluster01 in what should be A/A/P mode.
Usually instanceA and instanceB of SQL Server would reside on NodeA and NodeB respectively. the windows ...
0
votes
1answer
54 views
What exactly is a “load” when referring to node status of a Compute Cluster?
http://apps.cs.utexas.edu/cluster/node_status/index.cgi
You will see 9 columns corresponding to different categories that each specify properties of the different machines available in the Mastodon ...
0
votes
2answers
65 views
Condor Compute Cluster: quick information about Distributed Systems?
If you guys have never heard of the idea behind Condor Cluster: http://www.cs.wisc.edu/condor/
It's developed by the University of Wisconsin but used by many other universities since its birth.
I was ...
0
votes
1answer
32 views
HTTP Cacheing To Lessen Cluster Nodes?
I have been looking into using http caching for one of my projects on heroku. The site is serving primarily dynamicish (meaning that the actual contents doesn't change that often) iFrame's and ...
2
votes
1answer
47 views
PBS Jobs - serial vs parallel job which one is better for my scenario
I have access to a cluster that uses 'torque' (I think) and we use PBS scripts to submit jobs. I need to run more then 200 instances of an app that I've developed in java.
The app acts as a peer ...
0
votes
2answers
339 views
Configuring RHEL6.1 GFS cluster
I need to configure 3-node cluster with shared GFS2 filesystem. GFS2 needed as common Documentroot for apache behind the balancer.
Can you suggest some guide on how to configure ...
1
vote
0answers
53 views
Is it possible to open terminals in a grid layout when using ClusterSSH?
I'm using the ClusterSSH tool (using the cssh command) to admin clusters of between 4 and 8 machines.
By default, each terminal onto a cluster host is tiled, and opened to the right of the previous, ...
0
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0answers
16 views
working scenario of an web application when deployed on IIS on a cluster server?
I am trying to understand the IIS scenario here on a cluster server.I have to install a web application on IIS of the server.So how does the failover cluster scenario works in this scenario ..do i ...
1
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1answer
55 views
FSRM unable to create new reports after removing old LUN
We are running a 3 node failover cluster file service based on server 2008 R2 and iSCSI Storage Arrays. We have recently migrated all storage from one cluster file service on one LUN to a new file ...
0
votes
1answer
159 views
Invalid version while creating PostgreSQL 9.1 cluster
I'm trying create a cluster with existing data directory on Debian 2.6.26-2-686-bigmem. I use PostgreSQL 8.3 installed from apt-get and PostgreSQL 9.1 installed from OpenSCG I want to create cluster ...
0
votes
1answer
59 views
Is the Xgrid Controller still a 32-bit process?
So Lion generally represented a pretty serious move toward 64-bit systems for Mac OS X. But while I was poking around the Lion Server: Advanced Administration guidelines here:
...
1
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0answers
50 views
Most secure way to issue commands on ubuntu cluster with sudo'ing user?
This is sort of a follow-up question to an unanswered question I have regarding administration of Cloudera cluster, but I figure generalizing the question to all of Ubuntu may help me get an answer.
...
1
vote
2answers
54 views
How to build a cluster where users have power to remove/add?
I work in a company where each engineer/scientist has a pretty high end desktop machine. 80% of the time, they are not pumping it to full capacity... This makes me sad.
I want to be able to install ...
-2
votes
1answer
65 views
Setting up a low cost development cluster with (possibly) diskless slave nodes [closed]
Consider the following:
I (hypothetically) have one heavyweight server/master node with a couple disks in it and a group of lightweight diskless clients/nodes on a 10 gigabit LAN.
The server is ...
