Red Hat / Fedora :: Cluster Virtual IP Intermittent?
Sep 20, 2010
rhel5.5 rhcs cluster and xen kernel . now the cluster is running . the service ccsd .cman ,and rgmanager does work on both of the cluster member host. now I have a connecting problem when access the cluster virtual IP from different subnet clients. the clients in the different subnet with the cluster virtual iP access the VIP , the connection is intermittent ,while the clients in the same subnet of the VIP access the cluster VIP the connection is always on.
could anybody tell me , does the xen kernel has impacts to the cluster , or is this only a networking problem not a system problem? I monitor the switch mac table, find that , the mac of eth0 is always changing . so maybe it is xen kernel problem. I refer to some xen materials , the eth0 is a virtual adapter .and the original physical adapter eth0 is renamed as pth0 and works as a bridge .so how could I fix a mac address to eth0 ?
View 2 Replies
ADVERTISEMENT
May 2, 2009
I'm trying to get experience in creation of virtual Fedora 9 x64 cluster using Ubuntu 9.04/Virtual Box 2.2.2. I have a head node with 1 G of RAM and two slave nodes with 512 M each. There's internal networking in Virtual Box with DHCP, so my nodes have addresses:
192.168.15.100/24 (Slave0.localdomain), 192.168.15.101/24 (Slave1.localdomain), 192.168.15.102/24 (Head.localdomain). Ping is OK. I've added the following string to /etc/exports file: /usr/share 192.168.15.0/24(rw) And then used /usr/sbin/exportfs -a But showmount -e 192.168.15.102 entered at slave node shows nothing. What's wrong? May be I have to somehow start nfsserver, but how?
View 7 Replies
View Related
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.
View 9 Replies
View Related
Feb 16, 2009
I'm probably dreaming, but I have a hobby project in mind that I would like feed I have an opportunity to purchase a 3 year old fully populated (14 x 3Ghz dual Xeon nodes) IBM bladecenter relatively inexpensively.I thought it would be fun to set it up as a beowulf cluster with open source xen and test the market to see what people would pay for Private virtual machines.
My thoughts are to use 64 bit Centos 5 as a base to get the beowulf cluster up and then load xen.I haven't really looked at the market but I figure I should be able to run 50 private virtual machines charging say $50 per month. I figure I can use rsync to backup the virtual machines to a different location. I plan to connect to linux based Network Storage running 3 x sata 1TB drives, probably via iSCSI. Along with the drive capacity currently on the blades I should get 2-3Tb online capacity over a Gbit network. (Cisco 14 + 4 network switch module)
I realise I have a bit of setup work to do and before I go investing a lot of time and a little money I'd appreciate some pragmatic advice as to why this may be a stupid venture.
View 2 Replies
View Related
May 16, 2010
After upgrading Centos 5.4 cluster nodes to 5.5 all virtual services failed to start. All virtual services are marked as 'failed'. The reason: new /usr/share/cluster/vm.sh requires 'which', but this is not reflected in rgmanager-2.0.52-6.el5.centos.
Solution: run 'yum -y install which' on all nodes, and reboot cluster. Hope that will save somebody hours of downtime.
View 1 Replies
View Related
Mar 15, 2011
I'm having a very strange problem with red hat cluster. After testing it in the lab, I tried to install a new cluster and received the following error: cman not started: Cannot start, cluster name is too long or other CCS error /usr/sbin/cman_tool: aisexec daemon didn't start I've checked the internet for that error, but nothing. I decided to to take the example from cluster.conf man, which looks like that :
[Code]...
And still I get the same error. I can find my servers both from DNS (FQDN and short name) and they also appear in /etc/hosts.
View 3 Replies
View Related
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.
View 5 Replies
View Related
Sep 3, 2010
configure a separate NIC for the heartbeat. what i need to add to cluster.conf to achieve this?
View 1 Replies
View Related
Apr 1, 2010
I'm running Federa12 on my Asus EeePC 1005HA and I can't upgrade my system because my network connection flakes in and out. I'm connecting to the D-Link DIR-655 802.11n router. Any hints or ideas? I'd rather solve this than just plug-in the ethernet cable.
View 7 Replies
View Related
Mar 7, 2011
I have Fedora 13 installed on a new PC and have two types of intermittent boot hangups. What logs exist within Fedora 13 that may help me identify the cause or causes of these hangups? Todate, a reboot gets over the problems but I wish to get this sorted whilst the PC is still under warranty.
View 6 Replies
View Related
Aug 23, 2009
Estimating 10-20% of the time while booting I get an error like the following for USB partitions I am trying to automount in boot.log:
Code:
Mounting local filesystems: mount: special device /dev/sdc1 does not exist
mount: special device /dev/sdc2 does not exist
[code]....
View 3 Replies
View Related
Oct 3, 2010
From time to time I have no connection to the net after booting the machine. This is a wired connection that goes through a switch, then a router to a DSL modem. When there is no automatic connection, I can't connect manually either However if I re-boot the connection works normally.
The Network Connection indicates eth0 and eth1 are both set at "Auto" Strangely the "Last Used" column indicates "Never" for both even when I am actually connected, and on line.
View 3 Replies
View Related
Apr 3, 2011
In the last week I have noticed that sometimes my Mobile Broadband connection just goes off without me doing anything! I have credit on the dongle account, so it isn't that. I'm using fedora 14 on an acer aspire one netbook. Dongle is a Huawei E160 on o2 here in the UK Kernel is 2.6.35.11-83.i686.fc14
Sometimes unplugging and replugging the usb dongle works. Othertimes, I have to leave it out for several hours. It does seem to happen daily, though.
View 2 Replies
View Related
Apr 20, 2011
For most actions on my system now it seems that clicking doesn't get a response on the first click. It can take 2 - 4 clicks at times for the system to react. Although I work primarily in my browser (Google Chrome), it does happen outside as well. I am running Gnome as the window manager.
View 2 Replies
View Related
Jan 14, 2010
The shares get mounted correctly and you can navigate through the directories and open files.The only problem is that it randomly starts going really slow taking 30 seconds or longer to open a directory that has 2 or 3 files in it.I have tried quite a few things to try and fix this without any luck. Its getting to the point where I am having to consider recommending that we use windows instead, which I would rather not do as I think its good for students to experience different operating systems during school.
View 9 Replies
View Related
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...
View 3 Replies
View Related
Mar 29, 2010
My server is running Red Hat 4.1.2-44.I am having an issue with it hanging (website doesn't respond, can't connect via SSH (it's a remote server)) after 4am on every 3rd Sunday or so.A reboot is required to get the server responding again.I have checked every logfile I can find and found nothing that helps me. The thing I have noticed is that some of these log files start afresh after the reboot so my initial thoughts are that it is a logrotate issue or something similar.
The last activity I can find before the reboot (at 8:32) is in the logfile /var/log/cron:
Mar 28 04:22:01 crond[9356]: (root) CMD (run-parts /etc/cron.weekly)
Mar 29 08:32:39 crond[3884]: (CRON) STARTUP (V5.0)
[code]....
View 7 Replies
View Related
Jul 17, 2009
I'm having a bizarre problem where my network connection stops working randomly. At first I thought it was a DNS issue since Firefox simply chilled out on "Looking up [hostname]" until it timed out, but after further investigation (pinging IP's, "host" and "dig" being unable to reach servers) it became apparent that I couldn't even access the DNS servers i.e. the Wicked Connection of the East was most sincerely dead.
There are two strange things about this: one, there are no errors except "timeout". The network manager is happy, Firefox is happy until the lookup fails... Two, the failures only start *after* DHCP configuration. DHCP configuration never has any trouble sending or receiving packets. I'm going to try static IP and whatnot to see if that helps, more information later.
View 3 Replies
View Related
Aug 2, 2009
I am bit curious about Cluster Computing. I don't know much about it.Here is Some thing which I wanted to know.1) How can I configure fedora for Cluster computing .2) Is it possible to connect computer of different configuration(like AMD + Intel )? and also for different architecture ( like i386 + x86_64 ) for cluster computing.
View 7 Replies
View Related
Oct 10, 2010
I wanted to know how to cluster linux server. I mean any squid proxy server or apache server cluster or any other service, but I just wanted to know how to do cluster in linux. I have been searching it but there is no hope.
View 4 Replies
View Related
Dec 28, 2010
how to find version of red hat cluster running on a box. Any file or executable that gives information about the installed cluster version?
View 1 Replies
View Related
Feb 19, 2010
I have lack of understanding of CentOS in general. I have looked for a remedy on other forums and google, but haven't been able to find the answer. I have a 3 node cluster that was functioning great until I decided to go offline for awhile. My config is as follows:
node 2: vh1
node 3: vh2
node 4: vh6
All nodes connect to a common shared area on an iscsi device (vguests_root)
Currently vh2 and vh6 connect great, however since putting the machines back online I can no longer connect with vh1. A dmesg command on vh1 reveals the following:
GFS2: fsid=: Trying to join cluster "lock_dlm", "Cluster1:vguest_roots"
GFS2: fsid=Cluster1:vguest_roots.2: Joined cluster. Now mounting FS...
GFS2: fsid=Cluster1:vguest_roots.2: can't mount journal #2
GFS2: fsid=Cluster1:vguest_roots.2: there are only 2 journals (0 - 1) .....
View 1 Replies
View Related
May 5, 2011
I want to setup two node http cluster,
View 1 Replies
View Related
Jun 8, 2010
We are having a production setup where we are having one SAN storage and two RHEL machines. Now we have created a SAN LUN, say for example trylun. Now we have mounted the same SAN partition on both the machines of RHEL on the same mountpoint path say for example /trylun. After that we have installed RHEL Cluster suite to create a failover cluster.
Now we will be having one Ingres Database service for which data will be stored in SAN storage LUN mounted on both the machine say for example /trylun. When service on one machine will be down then RHEL Cluster Suite failover cluster will takeover and then it will start the same service on another node and handle the failover. Wether Ingres will run from node 1 or node 2 will not make any difference as both are using shared SAN storage i.e /trylun in our example. So same data storage will be used by both the ingres service on both the servers.
Now I have to simulate the same in my office test environment. But the problem is, in office test environment I will not have SAN server as it is additional cost. And I will have fedora operating system.
So I wanted to know is how can we create a shared file system like SAN in fedora (Is NFS a solution). And after creating the shared file system how can we create a failover cluster in fedora if we do not have Red Hat Cluster Suite.
View 1 Replies
View Related
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
View 2 Replies
View Related
Jun 10, 2010
I compiled a code on a Linux cluster machine with mpich and ifort. A test run shows that the program works fine. However, it seems that the program is running in serial instead of parallel mode: reducing the number of CPU's from 32 to 3 does not increase the time it takes to run the simulation. Infact, the simulation is slightly faster with 3 compared to 32 CPU's. Unfortunately I have very little experience on the subject.
My questions are:
(1) How can I be 100% sure my code is running in parallel and not in serial mode?
(2) If the code is running serial, what do I need to do to make it run in parallel mode?
Details:
For submission I use a jobscript which includes the following lines:
Red Hat 4.1.2-46
View 1 Replies
View Related
Aug 23, 2010
Does anyone know how to restrict only certain users to log into my RHEL 5.3 cluster? I have tried using pam.d but no luck.
View 3 Replies
View Related
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".
View 6 Replies
View Related
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.
View 5 Replies
View Related
Feb 28, 2011
Has anyone successfully configured Windows Server 2008 NLB (Network Load Balancing) within VirtualBox?After I create my initial cluster, the guest machine locks up.
View 1 Replies
View Related
