I 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 RepliesI would like to know how to change the uname -a result in my server, i mean if the attacker upload a phpshell in any website for my customer, how could i have a fake uname -a for him?
View 7 Replies View RelatedI 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 Related# mkinitrd -v /boot/initrd-$(uname -r).img $(uname -r) what does it [$(uname -r).img $(uname -r) mean?
View 2 Replies View Relatedthere 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 RelatedI'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?
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.
View 5 Replies View RelatedI 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?
I am working with NS-2, I am facing a situation where I need to re align the transmission range of a particular node. Can I do this by modifying the protocol's source code? I should not change the default value from 250, only few nodes who satisfy a particular criterion should be reset to some other range like 200 or 300. How can I do this?
View 1 Replies View RelatedI 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?
I 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 RelatedI 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 RelatedI 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
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I'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">
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I have a two node cluster, and a third system which has luci installed.
node1 is nfs0
node2 is nfs1
both nodes have identically the same configuration. They have a fresh installation of Centos 5.5 + yum update. I am unable to join nfs1 to the cluster, as it is giving me the following issue:
Sep 29 23:28:00 nfs0 ccsd[6009]: Starting ccsd 2.0.115:
Sep 29 23:28:00 nfs0 ccsd[6009]: Built: Aug 11 2010 08:25:53
Sep 29 23:28:00 nfs0 ccsd[6009]: Copyright (C) Red Hat, Inc. 2004 All rights reserved.
[code].....
Newly trying cluster configuration setup on RHEL5.3_64 bit machine.Basic Requirement :Need to Configuration GFS file systemHerewith I have shared details:
System : > I have 2 HP proliant Dl385 server.
> Both system are connecting on Public network. (eth0)
> I have connected eth1 - directly each other system like a Private Network (May be I am
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I am trying to rock cluster for the large computing. my all slave node connected with rock cluster master node. but I want to run the graphical application on the cluster node. I am not getting this point .
View 5 Replies View RelatedI am trying to create a 2nd node from last couple of days but no luck.do this.I have gone through these article again and again:Here is my setup
node1 ( ricci + luci) : which is working fine
node2 (ricci only) : this is giving me problem
node1
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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 RelatedI've build a home-made small cluster built up of a master and 1 disk-less slave node.Lately it happens that the node 1 fails to start, reporting the following message:
IP-Config: Complete:
[ 12.318051] device=eth0, addr=192.168.100.21, mask=255.255.255.0, gw=192.168.100.2,
[ 12.414252] host=192.168.100.21, domain=mydomain.com, nis-domain=(none),
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Some instructions say to put 'uname -r' into terminal commands. Is this supposed to be automatically converted by the system to something else? It doesn't get converted to anything on my system. uname -r only works by itself but not as a program argument.
View 1 Replies View Relatedany one knows the difference between the uname -m, -p and -i?
Code:
uname -m
i686
uname -p
i686
uname -i
i386
[Code]...
i gt this from man. does it mean that the machine is a i686 machine that is running on a i386 OS?
I run a compute cluster with only a few users. Occasionally a user will accidently run a job on the master node that runs out RAM/swaps then hanges up for a while.In /etc/security/limits.conf I have set memlock to 7.5GB (master has 8GB RAM) and maybe that is what lets the machine come back rather than hanging completely? Is this the right setting to physocally limit a single user from asking for more RAM than the system has and bringing down the system? Should I set this to 2GB or so or is there something else I can do??
View 4 Replies View RelatedI got this message after a update some weeks ago and am now on a permissive opening.
Fedora 11
gnome 2.26.3
How would I prevent printing the kernel version after logging in? I cannot find any relevant setting in login.defs
View 4 Replies View RelatedWe have a set of two production machines running Oracle databases. There are a couple of SAN attached filesystems of which one of them on the one machine (node1) is created as ext3 and nfs exported to the second machine (node2). However,during certain conditions related to rac, the interconnect between the two nodes lose connection and due to the loss of communication the servers will reboot. The problem however is that node2 usually reboots first and by the time it starts up, node1 is not up and running yet, thus causing the nfsmount to not be available on node2. I have put my head around some options on how to get the servers to automatically resolve this, however I am posting my question here as someone might have a reliable way of managing this. My one idea is to create a script on node2 to mount the nfs filesystem, create ssh key authenticated user between the nodes and then put another script in place on node1 as part of the startup to ssh to node2 and mount the filesystem.
View 1 Replies View RelatedI use Debian testing and when I run this
Code: Select alluname -a
I see these
Code: Select allLinux debian-mfaridi 4.2.0-1-amd64 #1 SMP Debian 4.2.1-2 (2015-09-27) x86_64 GNU/Linux
I run the uname -m command and the output is i686.What does it mean ???
View 3 Replies View RelatedYou know, I thought I had my Broadcom issues all figured out, I have a simple list of installing the RPM Fusion repos do a yum update and yum install kmod-wl and everything works.However, this time it didn't work. I am installing a new fedora 14 for a friend who is totally fed up with windows and I get this error: (Yes I have searched the internet and Fedora forums for an answer)
[code]...
I have tried the two yum suggestions and they don't work I have tried updating the kernel and have installed kernel-devel-'uname -r' (suggested by another site) I have tried installing broadcom-wl and b43-openfwwf which only knocked out the card entirely
I am having issues trying to compile the alsa-linuxtant module and I am getting errors about not being able to find some files and the source needing to be reconfigured. Anyway the developers told me to try compiling on a pristine source to see if I could compile that way. When I went looking at kernel.org I did not find a 2.6.32-5 version. So I did some checking and to see just what version I have.
$ uname -r
2.6.32-5-amd64
$ dpkg --list | grep linux-image
ii linux-image-2.6-amd 64 2.6.32+27 Linux 2.6 for 64-bit PCs (meta-package)
ii linux-image-2.6.26-2-amd64 2.6.26-24 Linux 2.6.26 image on AMD64
ii linux-image-2.6.32-5-amd64 2.6.32-15 Linux 2.6.32 for 64-bit PCs
So the actual package that is installed is 2.6.32-15 but uname -r reports 2.6.32-5 as the kernel version.