Ubuntu :: Debug 10.04 UEC Node?
Jun 3, 2010I installed a Node UEC from 10.04 which does not boot(stops at loading apache) and the logs are empty.
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General :: Make A DRBD Node Start Itself As A Primary Node Automatically?
Jan 28, 2010I've set up DRBD on 2 machines, 1 of them is the master, another is the slave.
After each bootup, I need to run the following on the master machine:
Code:
drbdadm -- --overwrite-data-of-peer primary all
Do we need to specify which machine should be the primary node every time? Is there any method to make the machine "know" it's itself the primary node?
Programming :: KSH Script Behaving Differently On An HACMP Cluster Node (prod) & A Single Node (UAT)?
Dec 16, 2010I 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.
View 5 Replies View RelatedCentOS 5 Networking :: Setup The Cluster To Automatically Failover The Service To Another Node Case One Node Fails?
Mar 1, 2011I am familiar with windows 2008 cluster servers, and I just started testing with centos cluster. I am creating a simple 2-node cluster, for a simple ping test.
Node 1: 10.0.0.1
Node 2: 10.0.0.1
Virtual ip: 10.0.0.10
So far, I can ping a virtual ip, and manually relocate it between the nodes, but I didn't figure out, how to do this automatically. So this is my question: How can I setup the cluster, to it automatically failover the a service to another node case one node fails?
Server :: Node Failover And Another Node Take Over Resources On HA Cluster?
Oct 27, 2010I don't have much experience in clustering. And I'm deploying a cluster system on CentOS.But I don't know how long a node failover and another node take over those resouces to continue running service is good, fast or slow? 1s, 10s or
View 2 Replies View RelatedUbuntu Servers :: Can VM's Use More Than One Node In Cloud
Jun 7, 2011Can a Virtual Machine, instantiated in the Ubuntu Cloud (UEC), use resources from more than one node?
View 5 Replies View RelatedUbuntu :: Sudo Node Command Not Found?
Feb 25, 2011I just installed node.js and it is located at /home/apantev/local/node/bin . So I added the follow to my ~/.bashrc
Code:
export PATH=/home/apantev/local/node/bin:$PATH
And this works fine if I use node normally for instance
Code:
node -v
[Code]....
Software :: Ssh With In The Node Is Not Working?
Feb 3, 2011I have a rhel cluster with two nodes. cluster is working fine.But suddunly for today morning im not able to ssh to once of the nodes with follwing error.ebug2: we sent a hostbased packet, wait for replyConnection closed by 10.125.104.162After some not able with in the node and after some time second node also started behaving like this. Now ssh with in the nodes and between nodes is not happening. But i am able to putty session.Error from /var/log/messages.vsftpd(pam_unix)[14260]: authentication failure; logname= uid=0 euid=0 tty= ruser= rhost=
View 1 Replies View RelatedRed Hat :: Piranha With 2 Node Cluster?
Oct 2, 2009after few days of hard work about redhat cluster and piranah, i have done 90% hopefully,but i am stuck with iptables rulesi am attaching full piranah server screen shot of my network .please have a look and please tel me, what else to do in piranah server ...a) from firewall (Lynksys) what ip shall i forward port 80 ?? ( 192.168.1.66 or 192.168.1.50 ??)b) Currently its looks like http request is not forwarding from Virtual server to real server , what iptables rules shall i write ?(Please have a look to iptables rules)also, this link for my piranah server setupi guess i am stuck somewhere where i need some experts eye to catch it upso please look at the all the pictures , ifconfig and iptables rulesifconfig :
ifconfig
eth0 Link encap:Ethernet HWaddr 00:0F:3D:CB:0A:8C
inet addr:192.168.1.66 Bcast:192.168.1.255 Mask:255.255.255.0
[code]...
Ubuntu Servers :: Error When Adding Cloud Node?
Jan 4, 2010First time setting up Ubuntu Cloud system.
I get error during install when searching for and trying to add node from the Cloud Controler: New node found on 192.168.1.182:add it? [Yn] y Connecting to 127.0.0:8774...failed: Connection refused. Error: you need to be on the CC host and the CC needs to be running.
Networking :: How To Remove /dev/drbd0 From A Node
Jan 21, 2010I've configured drbd with Heartbeat. The nodes are connected at first, but when I issue "/usr/lib/heartbeat/hb_standby" on node 1, node 2 won't take over, and after a while, both nodes become "WFConnection".
I figure this happens because I created "dev/drbd0" on both nodes! Do you know how to remove it? I googled it but got nothing.
Server :: LVM On 2 Node Cluster - Getting Error
Oct 26, 2010I am having an issue with LVM on a 2 node cluster. We are using powerpath for external drives. We had a request to increase /apps filesystem which is EXT3.
On the first node we did:
pvcreate /dev/emcpowercx1 and /dev/emcpowercw2
Then....
vgextend apps_vg /dev/emcpowercw2 /dev/emcpowercx1
lvresize -L +60G /dev/apps_vg/apps_lv
resize2fs /dev/apps_vg/apps_lv
Everything went on well , we got the /apps increased. But on the second node when I do pvs.
I am getting following error:
WARNING: Duplicate VG name apps_vg: RnD1W1-peb1-JWay-MyMa-WJfb-41TE-cLwvzL (created here) takes precedence over ttOYXY-dY4h-l91r-bokz-1q5c-kn3k-MCvzUX
How can I proceed from here?
Server :: Oracle CRS Rebooting Node?
Nov 2, 2010I am running a 5 node 11g RAC cluster with cluster ready services. The hardware is HP BL460g6 with virtual connect modules on each chassis. The OS is RHEL5.5, 2 Qlogic 4G fibre cards, 2 Broadcom NICs bonded, and the backend disk is all Hitachi 15k. The issue that I'm seeing is periodically each day there are spikes in I/O waits for disk writes, and sometimes that will cause a node or 2 to reboot when CRS can't communicate with the other nodes. Both nodes that have been evicted, are on the same chassis. What I've checked is, the backend storage is not seeing ANY high utilization, in fact it's running at less than 10% all the time. The network is 10G, and is not showing errors on the switch, or on the blades themselves. The redo logs have a 10M buffer cache, and are running on ASM disk. What other information would be beneficial to check? I am seeing nothing in the logs as to any errors, or waits for disk writes. I believe it's a software issue, but am lost as to how to prove it. These aren't the only nodes experiencing periodic high I/O waits, and it happens at the exact same time on all systems, whether they run ASM or are part of a cluster.
View 1 Replies View RelatedServer :: Uname -n Node Name Change?
Feb 7, 2010I want to change my servers node name which is the output of "#uname -n"Server is CentOS 5I searched but couldn't find. There was some search results about /etc/nodename but I don't have a file at that path. Also some said uname -S which doesn't work.
View 8 Replies View RelatedSoftware :: 2nd Node Tried To Take Over Resources But Failed
Sep 9, 2010On a HA Cluster, the 2nd node noticed that the 1st node was down, but the first node wasn't down. This resulted in that the 2nd node tried to take over the resources but failed, because the resource was stil in use by the first node. This caused that the first node was left behind in a fuzzy state. I had no other choice to kill the heartbeat service, and reboot the server to solve the issue. There where no network issues, all hardware is ok. Are there any bugs know? Is there a way to avoid it from happening again?
View 1 Replies View RelatedSoftware :: Change The Algorithm Of A Node In Ns2?
Jan 3, 2011there are 3 nodes..A,B and C. Node A wants to send information to Node B but it does so by sending it to Node C first which then sends to B. And similarly Node B sends to A. In this simultaneously C doesn't send to both A and B. This is the in built algorithm..but i want to change it to: A and B send their packets to C and C sends both these packets to A and B..by ORing... In the receiver side...node A can receive the wanted packet and also B. Where do i change the algorithm?
View 7 Replies View RelatedCentOS 5 :: Northbridge - Node 2<0>K8 ECC Error ?
Feb 2, 2011Getting the following errors on a new server:
They appear randomly while the system is idle and in use. The system configuration is as follows:
Running the latest Centos 5.5plus kernel (b/c we are using XFS)
The errors appear randomly several times a day. Tried removing some memory, but no combination sees to cause the error to stop.
I see this error posted in many places all over the web - some claim faulty Ram, faulty CPU, faulty mobo, and kernel bug.
Has anyone seen this error and been able to nail it down?
Ubuntu Servers :: How To Setup Based Cluster Configuration For Each Node
Jun 27, 2010I need to setup an linux cluster ..so i prefer ubuntu because of support and i personally i use ubuntu.. and can any one explain in breif ..what all the things needed to setup an ubuntu based cluster my configuration for each node will be (totally 6 nodes) core2 duo with 4 gb ram i need 4 nodes and 2 for load balancing..
View 1 Replies View RelatedUbuntu Networking :: Handle The Node Users Login With Permission?
Jul 16, 2010i have a ubuntu server and no of nodes.give me any suggesions for how to handle the node users login with my permission?.i mean than they can switching on and boot the system but the system want to stay in unusable stage.After getting my permission they can operate the system.
View 2 Replies View RelatedUbuntu :: How To Debug Random Error
Jan 17, 2010So my machine crashed and as far as I can tell it wasn't associated with any particular program. Is there some log I can investigate to see if I can determine what caused the crash?
View 2 Replies View RelatedFedora :: F15, Diskless Node Went Into Emergency Mode
Aug 31, 2011I made a diskless image against Fedora15, during the boot I found it displayed the following error message and went into emergency mode.
The error message:
Starting Relabel all filesystems, if necessary ^[[1;31maborted^[[0m because a dependency failed.^M
[ 107.607155] systemd[1]: Job fedora-autorelabel.service/start failed with result 'dependency'.^M
Starting Mark the need to relabel after reboot ^[[1;31maborted^[[0m because a dependency failed.^M
[code]...
Red Hat / Fedora :: CentOS 5.4 GFS2 - 3 Node Cluster
Feb 19, 2010I 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) .....
Red Hat / Fedora :: Setup Two Node HTTP Cluster?
May 5, 2011I want to setup two node http cluster,
View 1 Replies View RelatedGeneral :: Node Mounted From Appserver - Permission In NFS
Mar 2, 2010I have a Node mounted from my Appserver (Solaris) to DBserver (Solaris), the reason why I Mount is that My Oracle writes file using UTIL_File in Dbserver only, so now I done the Mount and I can create file using VI in the Mounted point. But My UTIL_file is not able to create a file, the reason might be that Oracle writes only as ORA user and my Appserver has no such user, for that I have given the permission 777 for that particular folder, but no use, so I wonder do I need additional permission for this.
View 2 Replies View RelatedGeneral :: Error While Building A 3-node Cluster ?
Jan 6, 2010I'm building a 3-node cluster. I have created ocfs filesystems and mounted them on the first two nodes. But while mounting them on the third node , i'm getting this error for 8 of the total luns. all these 8 luns are of 1GB size.
I've unmounted these 8 luns from the other node and tried to mount in the third node ... and then it was working and again the error occurs in the second node. My observation was for some reason these particular luns are not allowing the third node.
mount.ocfs2: Invalid argument while mounting /dev/mapper/voting1 on /voting1. Check 'dmesg' for more information on this error.
dmesg output was :
I'm using RHEL 5.4
Server :: Build A 2 Node Failover Nfs Cluster?
Feb 9, 2011I am using Centos. I have read places that you can use Drbd + heartbeat + nfs to make a simple failover NFS server.I can't find any document that works though. I've tried 20 or so, including some Debian ones.So, does anyone have any other ideas of how to do this?Point me in the right direction please.I want 2 nodes. One to be actively serving an NFS share The other to be ready for failover. If the first one goes out, the second takes over.Meaning, the filesystem is in sync, the IP must change, and NFS must come up
View 7 Replies View RelatedServer :: Redhat Cluster Is Not Moving On Second Node?
Oct 25, 2010I have two node redhat cluster for mysql database.The problem is that after updating the packages on both of the nodes after and previously the sevices was not able to relocated on second one , even rebooting the server the problem occurs.While starting the service on second node it started on the first one.Other services are running fine on both nodes.I have checked the /etc/hosts, bonding and many more files and seems to good.find the log for reference.
<notice> Starting stopped service service:hell
Oct 22 14:35:51 indls0040 kernel: kjournald starting. Commit interval 5 seconds
Oct 22 14:35:51 indls0040 kernel: EXT3-fs warning: maximal mount count reached, running
[code]...
Programming :: Define A Structure Node In Graph?
Oct 27, 2010I wanted to implement a graph.By graph I mean to say that I am writing programs for BFS,DFS and other such stuff and want to see them in action. For this I started writing a program.The first entry point is to define a graph. I took a pen and paper and made a graph. Now to be able to code this in C.I defined a structure but I am finding problem in defining this structure. I looked into Google and came across incidence list and adjacency list representation [URL] after understanding that I am not able to understand how do I define my structure that would be a node in graph. Here is what my graph looks like
Quote:
|-----------31
| |
| 2---4---6---8
| |
[code]....
Programming :: How To Pull Node Pointers Out Of The Model
Mar 25, 2010I am trying to find a way to pull Node Pointers out of the model, for use in other areas of the program. The solution is probably simple but I haven't had any luck finding it.
Model for a QTreeView:
Code:
class testModel : public QAbstractItemModel
{
public:
testModel();
~testModel();
[code]....
CentOS 5 Server :: 2-node Non-shared-FS Cluster On 5.2/3?
Apr 15, 2009I'm having some trouble configuring clustering in a 2-node cluster, with no shared FS. Application is video streaming, so outbound traffic only...The cluster is generally ok - if I kill -9 one of the resource-applications, the failover works as expected. But it does not failover when I disconnect the power from the service owning node (simulating a hardware failure). clustat on the remaining node shows that the powered-down node has status "Offline", so it knows the node is not responding, but the remaining node does not become the owner, nor start up the cluster services/resource-applications. eth0 on each node is connected via a crossover cable for heartbeat, etc. Each eth1 connects to a switch.
[root@lmshw01 ~]# cat /etc/cluster/cluster.conf
<?xml version="1.0"?>
<cluster alias="lmshw-clust" config_version="35" name="lmshw-clust">
[code].....
