Red Hat / Fedora :: Use Storage On Multiple Servers As A Single Cluster?
Apr 20, 2011
Can ANYONE point me in the right direction on how to use storage on multiple servers as a single cluster?I thought storage cluster was for that but, after much googling, and even more help from here, I don't think that achieves my goal. My goal is to have multiple servers share a file system, to act as somewhat of a network raid, so if node-A goes down the files are available on other nodes, and hopefully so when the capacity of the nodes are reached I can add nodes to expand the "cluster".
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Jun 8, 2010
I am trying to do the cluster storage with the Rock Cluster storage operating system . I have install the rock cluster on the main server . and I want to connect the client with the PXE boot . when I starting the client then it boot from the PXE boot into the mode of compute node. but it ask the where is to be stored the I have give the path..then server says that not able to find the directory path.
Steps:-
1) insert-ethers
2) client is started with the PXE boot.
3) it detects the dhcp .
4) At last it demand where is to be started by cd-rom, harddisk ,nfs etc.
then I started with the nfs and I have given the lanIp of server.and server is detecting the client but client is not finding the filesystem directory. into export partition directory but it is not taking path.
PATH:-
/export/rock/install it is not finding this path then it is not able to start the o/s from PXE boot..Is there any solution and manual of rock or anyother solution then u can reply to me...
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Jul 14, 2011
I trying to create a Cluster Linux with two servers and one storage, I have mounted some filesystems in both servers, but, when I create a file on server (1), I don't see the file on server (2).
Is that a problem with the linux or storage configuration ?.
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Apr 23, 2011
One of the things I wanna do is create a partition which spans across multiple HDD's. is this possible? would I need to cluster the HDD's first then add the cluster to the partition?
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May 8, 2009
I would like to know if I need multiple IPs' to setup two SSL urls on the same Apache server? Two ssl certificates, one IP - is it possible?
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Nov 6, 2010
I am trying to build GFS2 cluster with 2 or 3 Fedora 14 nodes, but I've encountered some problems from the start. First luci does not work at all in Fedora 14. There is no luci_admin and even if I manage to start luci service, I get a blank white screen when I try to open it from the browser. I've googled a bit and found that I'd might be able to setup GFS if I manage to build cluster.conf manually and start the cluster suite, but I cannot find documentation on how to create cluster.conf anywhere. If anyone knows how to setup GFS2 without a cluster suite or how to configure cluster.conf.
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Jul 26, 2011
I'm using my home server to netboot into live CDs. To summarize that article, netbooting a liveCD system involves passing an NFS host:/path in kernel's command line, which is subsequently mounted as /cdrom on the live system. The article mentions copying the contents of the iso image to a place on the hard drive, but I see no reason for this, since the contents need to be read-only anyway, which is easy to achieve by mounting the iso through a loop device:
Code:
# mount
...
/dev/loop0 on /mnt/kubuntu-lucid-amd64 type iso9660 (ro)
/dev/loop1 on /mnt/kubuntu-natty-amd64 type iso9660 (ro)
[code]....
Now, I am using NFS to mount a regular (rw, HDD) directory which I use as a network drive and I can mount any subdirectory and still access all the files within, ie. when I export /data on the server, I can still mount /data/downloads on the client:
Code:
server:# exportfs
/data 192.168.1.4/32
client:$ sudo mount -t nfs 192.168.1.1:/data/downloads /mnt/netshare
[code]....
Is it possible to export just /mnt and be able to mount any/all of the subdirectories? NFS doesn't like going across multiple file systems:
Code:
server:# ls -al /mnt/kubuntu-natty-i386/
total 3532
dr-xr-xr-x 11 root root 4096 2011-04-27 11:29 .
drwxr-xr-x 7 root root 4096 2011-07-25 21:46 ..
[code].....
When I try to export just /mnt and mount /mnt/kubuntu-natty-i386 on the client, the mount succeeds but the mounted directory is empty.
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Sep 1, 2011
I am working in a project that needs to set up an Apache Web Cluster. The cluster needs to be High-availability (HA) cluster and Load-balancing cluster. Someone mentioned the use of Red Hat Cluster Suite, but, honestly, I can't figure out how it works, I haven't been able to configure it correctly. The project currently have two nodes, but we need to support at least three nodes in the cluster.
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Jun 1, 2010
I have this intra net server project going on and now I moved to 10.04 however there are still some things that I would like to see clarification and instructions on. I am interested to set up multiple parallel websites for my apache server, however I am not sure how to do this exactly. Now I have solid address rivera.wippies.net and port 80 redirecting to my server. What I would like to get done is that I get multiple independent of each other websites for my server I was thinking of making websites like this
/var/www/site1 (which would be as rivera.wippies.net)
/var/www/site2 (which would be as rivera.wippies.net/othersite)
/var/www/site3 (which would be rivera.wippies.net/secondothersite)
etc, so that I have multiple "individual" websties for my server. Requirements would be that each of these websites could have SSL encryption as needed available too, since some of the website could have confidential information.
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Aug 25, 2010
I currently am running 10.04.1 and have successfully setup my home web server to run a single website. My current settings are:
-I have registered the domain name annarrankings.com through godaddy
-A record is - host = @ and points to = 71.114.220.3
-CName is - host = www and points to = @
-on my server I have the site running in /var/www
I've done some research and found that to run multiple websites I need to setup VirtualHost.
-So I created a folder /var/www/annarrankings.com and moved my site to that folder
-Edited Apache2.conf to add the following line
-I then went to /etc/apache2/sites-enabled and copied the default file to a new file called annarrankings.com. Here's the annarrankings.com file after I edited it
-I then created a link in /etc/apache2/sites-enabled to the annarrankings.com file in /etc/apache2/sites-available
-Next I editied /etc/hosts
-When i went to enable the site using a2ensite annarrankings.com I got the following
I figured this was ok since I had already created a symbolic link earlier (a result of trying to following multiple tutorials and ..... videos at once) so I reloaded apache2. I created an index.html file in /var/www/ just for testing purposes and when I load www.annarrankings.com I get the file located in /var/www/ instead of the website located in /var/www/annarrankings.com Do I need to change my A record or CName in godaddy or did I just do this completely wrong?
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Nov 30, 2010
Have many computers at works. Not always on as students works on it from time to time. I already have a nfs server for files, but there's plenty of disk space on workstations. I wanna make use of it as a "performance booster".Which distributed file system should i use ? Looked for Plan 9 fs, but seems a bit new and "complicated" for me.
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Apr 28, 2010
I'm trying to build a Fedora 12 cluster to run DHCP on top of two servers using pacemaker and drbd. The pacemaker runs great but i'm having the hardest time getting DRBD installed.
My kernel version is 2.6.32.11-99.fc12.i686.PAE First i tried to [root@dhcp-primary drbd]#yum install drbd this doesn't give me everything because apparently the kernel module for DRBD must be built from source. so i unpacked drbd-8.3.6.tar.gz and tried :
[Code]...
I'm not very experienced in compiling from source i'd love to make an rpm for this but after scouring the web and trying different install methods, I am still at a loss.
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Sep 15, 2010
I need a cluster-safe filesystem for a SAN shared storage in Slackware. Red Hat's GFS is the best/only solution?Given GFS support in a custom kernel, what about tools (mkfs,mount...)?
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Jul 8, 2009
I am working on the beginning of implementing a two-node cluster with shared storage (GFS) and IP address. Both machines are virtual on VMware ESX 3.5, that should not make a difference, but that is the background.current status is that I have a single node cluster built with only the IP address configured within the cluster. The issue that I am having is that I have configured a service to contain only the IP address resource, however, when I go into cluster management that "service" does not register. As such, I cannot bring it online, ping it, etc. below is my cluster.conf configuration:
<?xml version="1.0"?>
<cluster alias="tmbackup" config_version="10" name="tmbackup">
<quorumd device="/dev/sdb1" interval="1" min_score="3" tko="10" votes="3">
[code]....
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Sep 8, 2010
I am (and still) trying to create a 2 Node cluster on Centos5.2 with a Dell MD3000 as a storage. However I am getting this when I try to probe for storages in luci: An error has occured while probing storage:
<?xml version="1.0" ?>
<dict name="result">
<var name="diff" type="num" value="24"/>
<var name="max_inactive" type="num" value="600"/>
[code]....
And I also get errors on /var/log/messages end_request: I/O error, dev sdf, sector 0 Buffer I/O error on device sdh, logical block 0
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Oct 13, 2010
I have question about the UNIX sockets. my goal is to connect multiple sockets from a single client to a single server and keep them open...I'm not sure if that is possible to create or not. Do you have any suggestion or an example of code?
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Mar 11, 2011
I'm interested in buying a new hardware for my company. The old server (now 10 years old) should be replaced with a new one. Till now, I was looking on different hardware suppliers, boards and different other places. I found a Tyan board [URL]. The hardware spec is quite interesting and the board would fullfill our claims.
how both storage devices will be supported by Ubuntu or Debian??
- SATA-Controller: AMD SP5100
- SAS-Controller: LSI 1068E
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Jul 27, 2011
I tried the openssi for debian. I've tried linux from scratch but flopped trying to get mosix or kerrighed on it. Anyone got a simple way to go to get a hard drive installed single system image cluster with 32 bit machines. I'm not a new linux user but I have seemed to reach the limit of my skills. I don't like the live cds because I plan to add software later. The live cds don't fit my needs.
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May 28, 2010
I have come across an issue. We have an application for the biotechnology. The application is very heavy so we are trying to run it on cluster. We have four Dell workstation 7500. Each is having 32 GB RAM. But I am not getting the exact method of configuring cluster and node. I have tried Conga (Luci, Ricci). My questions are:1) Is it possible that our application can run on cluster ?2) If its possible then how shall i configure it?
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Jan 23, 2011
I've been trying to set multiple IP my Fedora 14 but nothing seems to work. Upon browsing the net, I found there are two ways for it. One is eth0:0~eth0:n nd another is eth0-range0. All are configs under network-scripts. But neither of them worked for me. Even grabbing a working example from my live server doesn't do the trick (though the server is a CentOS 5.5).
Currently using eth0-range0
ONBOOT=yes
IPADDR_START=192.168.1.127
[code]...
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Mar 2, 2010
I want to set up a cluster for scientific computing (mainly statistical stuff with R). I have a few conceptual questions. First, is there a difference between a Beowulf cluster and a cluster that has single-system image ("SSI," e.g. using openSSI or LinuxPMI)? If so, what's the difference? Second, if there is a difference between Beowulf and SSI, which one is better for scientific computing? Third, does using Eucalyptus make sense for scientific computing or is this more suitable for IO-oriented operations such as web service or databases
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Feb 24, 2011
I need to build a 3 node web server cluster to run a php application. Since the app requires users to login (which means a session state is to be maintained), I will be sharing sessions save path, I also need to share the application directory across 3 nodes. I having trouble deciding which cluster file system to select.
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May 19, 2011
I am trying to install a Red Hat cluster on my servers. In order to configure an heart bit between the servers I must give a valid multicast address. I wanted to know if there is a way to validate a multicast address before using it. For example if it is already in use i don't want to use it.
I read a little about it and there is a Perl module called IO::Socket::Multicast: [URL] There is a tool called mcasttrest.pl: [URL] Oracle use it to test multicast. But I am not sure what will do the trick in Red Hat cluster.
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Apr 15, 2011
is there an app, runs in Fedora, with a GUI, that can join multiple mp3s into a large single file?
I know Audacity can do this, but it's not really suitable for multiple files and I have voice notes that are in 10 minute chunks.
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Dec 16, 2010
I have created a simple menu driven script for our Operations to take care of the basic monitoring and managing of our production application from the back-end. Now, the script when tested in UAT environment was fine, but when deployed to production it kind of behaved oddly.hen the Operator chooses an option from the menu he is given the output and at the end is prompted to return to the main menu by using ctrl+c. In production, this return does not occur for some strange reason and the program just sits there.The session becomes unresponsive after that and I'm forced to terminated it by closing the PuTTY.I tried enabling the debug mode too (set -x) and still was not able to find any useful hints/trails as to why.
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Jan 4, 2010
I am running Karmic on a stripped laptop, and running it off a usb thumbdrive.Its purpose is mainly as a slide show/video show inset in a tableI did not really want to go out and buy a HDD, since it does not need to store that much. Then I went to aldi and they had 8gb flash drives for $5, so I got 6. The ultimate question comes down to the best way to make use of them. I ordered a 7 slot USB hum off ebay for cheap, and I was going to go from there. would it be easier/better to just plug them in and make links to them from the normal folders and just operate directly from there, or is there a better option. I guess a usb raid array could be neat
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Mar 5, 2011
I was wondering if and how it would be possible to put together a sort of Home "cluster" system. pecifically, I wanted to make it so I would have a central server and a few computers, where the central server holds the home folders and settings of each user, and each user can log in to any of the computers using a standardized login (into the server), where anyone could log in with their account on any of the few computers - and their home folder (Desktop, Documents, Music, etc) would automatically be there.
Also if possible, would there be some way to centralize the applications that show up on each "client"?
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Apr 29, 2011
I'd like to use Ubuntu to create a multiboot usb pendrive/flashdrive. I know there are a few programs out there that I could use to boot multiple Linux distros from the same pendrive, but I would also like to use the drive to boot some liveCD versions of *BSD and also use it for storage.
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Jun 29, 2010
I have an Ubuntu install on an 8Gb SDHC Card, customized for my Toshiba NB205. It took quite a bit to get sound and BT working, but now it's fine. Just out of curiousity, I used this same SDHC Card to boot my Dell D610 -- it booted, and sound and WiFi worked fine. I was surprised. There was a single error message after the desktop appeared, but I didn't record it.
I am now wondering: is it practical to use a single USB installation with multiple devices? I can imagine a number of complications, but was surprised that my attempt worked on two very different hardware platforms. There was discussion, when pendrives first appeared, of being able to use one to boot any PC to your own USB-based OS, bypassing any other OS installed on the PC.
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Jan 20, 2011
We can add multiple IP address on a single NIC. Is there any limitation that is how many ip address I can add on a single NIC card??
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