CentOS is an Enterprise-class Linux Distribution derived from Redhat Enterprise Linux sources freely provided to the public.

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Move Complete ORACLE from one system to another

I have 2 identical server with exact disk partitions (OS CENTOS 6.4 both ) [My college central oracle server]. Entire ORACLE HOME ( bin , control files, data files everything on oracle) is on 2nd ...
11
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1answer
3k views

How can I monitor CPU usage by user?

I need to monitor CPU usage by users of two servers' (Ubuntu and CentOS). For example: user1 5% user2 10% ... Is there a tool similar to top or htop that can do that?
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1answer
1k views

proftpd via mysql & web management of FTP users

I have installed prftpd and proftpd-mysql rpm on a linux machine. Intention is to have usermanagement of ftpusers via web. So I have installed proftpadmin from Here Now when I am adding the below ...
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1answer
3k views

How can I have a SSH banner appear BEFORE the “login as:” prompt? [duplicate]

CentOS 5.x When I enable the Banner /path/to/banner parameter in my sshd config file, the banner displays AFTER the login as: prompt. For example: login as: foo ...
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1answer
1k views

(CentOS-6.5) How to implement GNOME environment privilege escalation like GKSUDO?

How would I implement a GKSUDO -like privilege escalation control on CentOS 6.5 workstations? (standard GNOME config, x86_64 and i386) I do not want to share the root password with users, and some of ...
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1answer
2k views

Can Start Service With init.d script, however doing service <SERVICE_NAME> start does not work

I am running CentOS 6 and I am trying to get my Oracle database to run at startup. I have been following these steps: ...
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0answers
50 views

How to add Public IP to Cent OS

I am trying to configure a Public(Static) IP in Cent OS 6.4. For this, I made a copy of eth0(added local IP, so that I can connect the system to Internet) and named it to eth0:0(added Public IP, so ...
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1answer
41 views

Linux Image to recreate a machine with the same configuration

I have a CentOS 6.5 machine with some installed packages , I want three more identical boxes to be setup and I was wondering if I can make an image of the one machine that I have pre-configured and ...
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3answers
524 views

Uninstall dig command in centos 6?

I've realized that for some commands like wget and dig, we need to use the command yum to install them before we can use them. Doing some research the dig command doesn't come installed for security ...
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1answer
2k views

Cannot connect CentOS on port 9200

Hello all, I cannot connect to my CentOS server on port 9200, the port ElasticSearch uses. This is my iptables file (see image above). As you can see I tried to open port 9200, but apparently ...
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1answer
316 views

iptux Installation causing error

I'm trying to install iptux in CentOS by using yum install ip* it causes the following error --> Finished Dependency Resolution Error: samba4-winbind conflicts with ...
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1answer
6k views

CentOS 6 not regestering new hostname on Windows Server 2003

I rebuilt a Windows 7 Workstation with CentOS 6.5. The Windows 7 had a host name aaa attached to domain ddd.local. The new CentOS hostname is bbb. When I try to ping it: $ ping bbb ping: unknown ...
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1answer
210 views

Calendar software for Linux [closed]

I'm wondering and searching a calendar for Linux (Centos). Here calendar means to save important notes and points by date and time in all days,for this purpose I'm asking this question. Is there any ...
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1answer
1k views

Iptables rule to allow only one port and block others

We have two apps running (on top of linux) and both communicates through port 42605. I wanted to quickly verify if this is the only port that's been used for communication between them. I tried below ...
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1answer
537 views

cp /etc/DIR_COLORS ~/.dir_colors not responding

I'm using CentOS 6.5 and Putty. My problem is that directory file names are shown in dark blue color which is hard to read. I google searched and found this link; basically it's copying the DIR_COLORS ...
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0answers
502 views

Give domain users permissions on cifs shares?

I am using CentOS 6.5 - users authenticate using winbind, all are domain users except for root. /home is mapped to a cifs share on a windows server in /etc/fstab with this line: \\server\home$ /home ...
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1answer
789 views

Always getting “not a symbolic link” message, while installing any package

When I am installing any package in my centos 6.0 system, by yum or rpm, I always getting /sbin/ldconfig: /usr/lib64/libreadXMLnew.so.1 is not a symbolic link message. There is never a problem in ...
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0answers
1k views

CentOS 6.5 File system permission?

I am wondering, i have installed CentOS 6.5 Live-DVD in my company PC. After all the LAMP installation is done, am having a trouble with the File System permission settings. In the File system ...
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2answers
840 views

How to install ipkg in CentOS 6.5 [closed]

I have started using CentOS recently. I have some packages which end with .ipk. I need to install a cross compiler and the steps in the compiler's manual says I should do the following: ipkg install ...
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2answers
271 views

Is it possible to install a CentOS and some packages then put whole result into a installable iso?

I need to fresh install a CentOS Then install some packages with some configs Then save all into a installable ISO. Is it possible to build it?
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1answer
2k views

Unable to install erlang

I am trying to install Erlang for RabbitMQ on CentOS release 6.4 (Final) yum install -y erlang It gives me the following error : Error: Package: erlang-R12B-5.12.el5.rf.x86_64 (rpmforge) ...
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1answer
3k views

Named service won't start - seems to be caching errors

When I try to restart / start the named service, it keeps failing. service named restart Results in:- Stopping named: [ OK ] Starting named: Error in ...
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2answers
3k views

Cannot connect to any localhost connections

I'am using Centos 6.5 with latest updates. My problem is that whenever i try to connect to some local service it just hangs for example: wget wget 127.0.0.1 --2014-03-11 12:43:42-- ...
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1answer
6k views

Chrooted sftp gives “Permission denied” error

I have configured sshd_conf on my centos box as below: Match group pilots ChrootDirectory /home/pilots ForceCommand internal-sftp X11Forwarding no AllowTcpForwarding no and the directory ...
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4answers
623 views

how to extract .z file from an old QNX in Centos

z files from an old QNX system which needs to be unpacked in preferable Centos. These files are packed with the QNX pack method and there is no Virtual Machine (VMWARE) available to load QNX and ...
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1answer
73 views

Crontab in Daylight Savings

This weekend with daylight savings, we had a situation that when the system clock hit 3:00am from the jump, we had hundreds of processes fire off out of the crontab. Everything I'm reading says that ...
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2answers
289 views

How to use restricted characters in egrep?

I'm trying to use a regex in egrep on Centos 5.10, based on the one I made from this question on SO. T12345 .{1,100}[\n\r].{1,100}2014.03.04 I can successfully match the regex to the content in my ...
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1answer
1k views

Issue with yum - error in importing one of the python modules

I am trying to install rpm package on CentOS 6 using yum install command, but getting folowing error There was a problem importing one of the Python modules required to run yum. The error leading to ...
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2answers
5k views

When exactly does tmpwatch clear out files I place in /tmp?

CentOS 6.x I'm confused on when exactly files I place in /tmp/ are deleted. /etc/cron.daily/tmpwatch has the following: #! /bin/sh flags=-umc /usr/sbin/tmpwatch "$flags" -x /tmp/.X11-unix -x ...
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1answer
15k views

Trouble Installing APT on Centos 6 64 bit

Can someone help me get apt-get installed? I followed these instructions to try and install APT on Centos 6 64 bit: wget ...
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2answers
115 views

Egrep multiple strings in an XML file

I have a collection of XML files in a standard format that I'd like to search to see if they match two strings. Here is the idea: <ELEMENT1>Dave</ELEMENT> ...
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1answer
179 views

I cannot use yum command and ssh after mount drive.(CentOS)

As the title above, I cannot use yum command after I mount like below. mount /dev/xvdb3 /usr Filesystem Size Used Avail Use% Mounted on /dev/xvda ...
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1answer
222 views

gnome “switch user” shortcut or command line

Is it possible to switch user of gnome desktop environment by single command or any shortcut key, in centos 6.0, or Can we create shortcut key? I found "fusa", but still unable to install it.
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3answers
2k views

How to remove a specific character in a string but only if there are no numbers in that line in Linux

I've been stumped with this seemingly simple-to-fix problem.. well, for a while. Here's example output from the file I need to edit: $cat file George Washington Geneva Convention 123,281,029 USD ...
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2answers
1k views

How can I check to see if the /tmp directory on my CentOS 5.x system is mounted on tmpfs?

CentOS 5.x My understanding is that the contents of /tmp/ in CentOS 5.x can/are automatically purged by the OS via one of two methods: A daily cron task running tmpwatch If /tmp/is mounted on a ...
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1answer
7k views

Upstart documentation for CentOS 6

I am currently migrating from CentOS 5.5 to 6.4. Having fun converting /etc/inittab stuff to upstart. Ran into a lot of little problems but am getting the hang of it now. The best documentation ...
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0answers
669 views

How to install Liquidsoap & Airtime on CentOS 6.5?

That's the question, i already try some tutorials but i don't get any one to works What repositorys are needed? Is there any repo than i can add than have it to install it directly? Is there any way ...
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3answers
2k views

Alsa Pulse Audio cannot open audio device pulse (No such file or directory) pulse: Input/output error

I'm trying to stream my Gnome Desktop I installed on my OpenVZ VPS Server, and I'm not trying to run this from SSH, but the terminal inside the GNOME desktop, I know it probably doesn't have a sound ...
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1answer
657 views

Run Java in a chrooted jail

I'm on a CentOS 6.5 machine with Plesk Panel which I used to create a chrooted environment for a user who can access it via ssh. I'm not a big expert but somehow I managed to let him use some basic ...
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2answers
10k views

I'm not able connect internet from vmware player with centos

I installed centos 6.4 and when I installed I set the network config. But somehow centos did not save them. Now I forced server to use dhcp but it is taking wrong IP address and it is not able to ...
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1answer
220 views

Commercial support for CentOS [closed]

As you know CentOS is taken over by RedHat, so i boils out couple of points as mentioned here. Will CentOS remain complete free as it was(is) before(now)? Can we expect upgrades of CentOS in future, ...
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1answer
8k views

-bash: phpize: command not found on Centos 6

When I try to run phpize I get -bash: phpize: command not found I have run yum -y install php-devel but that returns: Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * ...
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0answers
2k views

NFSv4 which “domain” to put in idmapd.conf?

I'm using NFSv4 but suddenly when the NFS Server got rebooted, all the files on the Clients are having nobody ownerships after the Server is booted and started its whatever services again. Then I ...
2
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0answers
700 views

Corosync & Pacemaker IPTables Rules

When using Corosync with two rings via multi-cast addresses 226.94.1.1 (Port 5405) & 226.94.1.2 (Port 5406) what iptables rules are required to allow two nodes to communicate optimally without ...
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60 views

Assistance applying poorly packaged patches?

I manage a handful of servers running the various roles of a Ahsay online backup solution. A few times a year the software is updated and I need to apply patches on my servers. Annoyingly the ...
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1answer
537 views

Dell D610 6.5 CentOS Installation - Undetected Network Adapters

I've spent the better part of the day attempting to install CentOS 6.5 on an older Dell D610 laptop, using everything from a Minimal Install to the Full DVD. After multiple attempts I was able to ...
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1answer
751 views

CentOS 6.5 nmblookup not found

After installing Samba (yum install samba) on a fresh CentOS 6.5 install, I cannot run nmblookup ("command not found"). I also tried searching the file system and could not find it anywhere.
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1answer
1k views

Adding a second hard disk CentOS

I'm running CentOS on my VMware server console, and I want to know how to make a second virtual hard disk on which I can expand the size of the primary logical volume AND and a third to hold two ...
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0answers
200 views

CentOS 5.5 server dropping & blocking connection

I'm running a CentOS release 5.5 (Final) server running the LAMP stack amongst other things. When working on a web project with numerous active connections to the server box (Plesk over HTTP, SSH and ...
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416 views

Change screen resolution of Xenserver Console for a CentOS VM

I need to increase screen resolution to 1024x800 for my XEN console. I tried to place vga=791 at the end of kernel line the file /boot/grub/grub.conf but it seems that most of the boot arguments ...