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

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Extending swap on Centos

I recently created a swap file on my centos 6 based VPS using this guide. Now I wanted to extend this swap and I was reading through this guide. However, I think I've created a swap file than a ...
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300 views

Is there a quick way to download a directory in a repo?

I'm actually working from a windows machine, attempting to retrieve centOS 5.4 from their vault. I don't have unpacking software, so I don't want to use the iso's. I was wondering if there's an easy ...
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1answer
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How to give Root privileges for User in Centos 6.2 minimal

I installed Centos 6.2 minimal x86_64 server in Virtual Machine Manager. After installed I created Username in the server. And I added the User into a wheel group. # useradd testuser # ...
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1answer
24 views

centOS on a flashdrive

I am considering installing centOS to a flash drive, using command line only. I plan on using centOS to become familiar with Redhat and get better at utilizing it as a system admin. What is a ...
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1answer
3k views

I cant save files in /var/www/html

I'm running Centos 6.5 and I'm having problems saving my files to /var/www/html. The folder currently belongs to root and I have gone through everything from SELinux to configuration procedures, but ...
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Ping command results in packet loss

Whenever I ping on my personal computer, nothing gets displayed other than a single statement. Upon stopping execution, I see that several packets were transmitted in the statistics. On top of all ...
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2answers
1k views

How to run java service as a non-root user on CentOs 6

I have a script that starts a Java application as a service on CentOS 6: #!/bin/sh # chkconfig: - 80 20 SERVICE_NAME=cn4server PATH_TO_JAR=/usr/local/share/myserver/cn4server.jar ...
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3answers
419 views

What iptables command do I need to allow web server traffic?

I have a hard time understanding iptables rules. I am running a centos 6.5 VM on my laptop (vmware hypervisor) and it looks like it comes with this setup for iptables: # iptables -L Chain INPUT ...
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7answers
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CentOS 7 Installation Failed

After hearing the news that CentOS 7 had been published, I decided to install it on my computer. I downloaded the ISO image from the CentOS official website (the one named ...
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2answers
120 views

centos5 maximum memory setting for all users

I'm using Centos5 for operating server and the machine has limited memory. There are many users using the server and some of them are running programs which use a lot of RAM. When I check the used ...
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0answers
97 views

Transparent Proxy

I am setting up attempting to set up a transparent proxy on CentOS using Squid. So far I have managed to filter the content and get it working perfectly. The only issue I am having is getting a form ...
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371 views

varnish start failed + nginx

I did install varnish with this guide. Then I want to start it, but FAILD and I cannot start varnish. I ran it in debug mode and I got this error: No VCL Available ! What is the problem here? Also ...
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212 views

SSHD Password Feedback (Show Asterisks for Characters)

Is it possible to have SSHD show asterisks for the password characters much like pwfeedback does for sudo? I am using CentOS 6.5. For example:
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1answer
327 views

How to activate t1lib?

Using CentOS el6.x86_64. I installed t1lib this way: Installing RPMForge Repository wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm rpm -Uvh ...
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0answers
18 views

how to find where buffers/cache are and how to clean them up? [duplicate]

I want to create 20gb ram disk for ANSYS to work in yet on free -g I see: And personally I have not created any ram drives yet. So I wonder how to maximize avaliable ram: how to locate what is using ...
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1answer
982 views

forward outgoing traffic port using iptables

I am trying to forward all outgoing traffic from port 80 to port 8080 using iptables and I tried the following rule, though it did not work: iptables -t nat -A OUTPUT -p tcp --dport 80 -j REDIRECT ...
2
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1answer
706 views

Device URI for Printer

I have the system printer GUI installed on Centos 6.6. I added the printer (HP LaserJet Pro P1102). The model exists. The problem is that the GUI is asking for the Device URI which I'm not sure where ...
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653 views

Help with lost software RAID5 on CentOS 6.5

I've been searching for hours and giving up / too scared to delete all my data. I have a file server running CentOS 6.5 which has 4 WD RED 2TB drives (all > 1 year old) in software raid 5 with mdadm, ...
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Linuxwacom xsetwacom/xorg.conf

I have a CentOS 6.2 workstation with linuxwacom 0.21.0 installed. I am trying to map a button on a cintiq tablet to a keyboard key. I can do it successfully using: xsetwacom set "Wacom Cintiq 24HD ...
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2answers
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Check multiple files with string

i.e. for each .csv file, do the following: Check if the file contains the string “HEADER” in the first line. If its missing, do the following: Display, “ERROR: Missing HEADER record for ” Rename ...
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1answer
615 views

Unable to set partition type correctly using parted

I'm trying to create a bootable USB stick with FreeDos for BIOS updates in Centos 6.5, following instructions from: chtaube.de I created the empty 30MB img file using dd: [root@dumbledore ...
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1answer
368 views

I try to setup zabbix server on CentOS 6 (close system) but can find zabbix-server binary file after run rpm install rpm package

I try to setup zabbix on CentOS 6 in closed system ( no internet connection ). So I can only put rpm to that machine, and run command rpm -ivh zabbix-2.2.3-1.el6.x86_64.rpm ...
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1answer
1k views

How not to write kernel warnings into /var/log/messages?

I keep getting these log warnings due to a bug in kvm. Jun 30 19:12:31 server kernel: kvm: 28882: cpu0 ignored rdmsr: 0x345 Jun 30 21:12:31 server kernel: kvm: 31191: cpu0 ignored rdmsr: 0x345 Jun ...
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1answer
710 views

Sqlite Browser NOT opening on Centos 6.5

When I try to open an .exe file in centOS (Release 6.5) by double clicking, it is not opening. I am creating an app which requires databases. I cannot check whether the data has gone in database or ...
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2answers
2k views

My Centos Server cannot resolve the DNS host name [closed]

My Server OS: Centos 6.3 x64. The server iptables is: *filter :INPUT DROP [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -p tcp -m tcp --dport 22 -j ACCEPT -A INPUT -p tcp -m tcp --dport ...
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2answers
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locale-gen command in centos6

In my bare centos6.5 system, which is a docker container, en_US.utf-8 locale is missing: bash-4.1# locale -a C POSIX Normally in Ubuntu there is command locale-gen to do this: # locale-gen ...
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2answers
1k views

No 32 development library error after install glibc-devel.i686

I am trying to install gcc 4.9.0 on centOS 6. During ./configure there is an error coming up: /usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-redhat-linux/4.4.7/libgcc_s.so when searching for ...
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2answers
210 views

777'd some files. How do I repair SSH?

So I'm messing around on a test server and accidentally ran the following (which resulting in SSH breaking): # chmod -R 777 /var Because it's a test server, I'd rather not re-install right now, I ...
2
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1answer
1k views

set ip default outgoing in centos

I have server which has Centos and I want to change the outgoing IP address. This is the output of my route and route list commands. [root@marketport tmp]# route -n Kernel IP routing table ...
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227 views

How to activate reverse tethering on CentOS 5

Most examples for reverse tethering are for Ubuntu. They go something along these lines: Attach smartphone Configure usb0 Start reverse tethering on the smartphone Use the PC network via USB from ...
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1answer
2k views

Trying to get firefox running on CentOS 6 minimal iso - can't open display

I've got minimal CentOS 6 running on an Oracle VirtualBox on a Mac. I'm trying to get Firefox up and running so I can download some web files into the VM. I installed Firefox (yum --enablerepo=remi ...
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1answer
60 views

Create an RPM to distrubute custom SELinux policy

I have created two custom SELinux Policy modules to allow rsyslog to parse audit.log. Can I create an RPM of these two policies to distribute to 300+ clients? Is there a better way to go about this? ...
2
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1answer
1k views

virt-install cpu0 unhandled rdmsr

I'm trying to install a guest VM using KVM on a partition. I use virt-install. I call the following command: virt-install -n centos --ram=1536 --vcpus=1 ...
3
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1answer
612 views

Make RPM Satisfy Dependency Requirements of Other Installed Packages

So, I am installing a java app that I wrote which uses jnetpcap. This requires libpcap of at least v1.0.0. My CentOS 5.8 only has libpcap 0.9.4, which is required by other installed packages. I've ...
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3answers
727 views

Unable to access CentOS setup Network Configuration after attempting Python update

I attempted to update Python on my CentOS 5.6 VM and have encountered some issues afterward. Initially, yum wouldn't work, but I have resolved that. However, now I am unable to access the Network ...
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Can not call a command

I have a script /etc/init.d/tilestream with: TILESTREAM="/usr/bin/tilestream" MAPPATH="/data" HOST="host" #HOST="localhost" #UIPORT="9001" UIPORT="8888" #TILEPORT="9000" TILEPORT="8888" ...
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138 views

How to add TileStream in autoload CentOS

I'm new with CentOS. I have a installed tilestream. Now want to tilestream start automaticaly after system restart. Do like this tutorial. /etc/init/tilestream.conf #!upstart #description ...
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1answer
869 views

How to install Node.js in CentOS 5.10 with Python 2.4?

I want to use Grunt on websites we have hosted on our WHM dedicated server. It is running CENTOS 5.10 x86_64 standard with WHM 11.42.1 (build 21). It is critical that things do not break, as we have ...
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1answer
310 views

CUPS filter for a raw queue

I am having issues figuring out how to add a filter for a raw queue in CUPS - if this is possible. Basically, what I need to do, is convert a TIFF to PS before sending it to the raw queue. The ...
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1answer
101 views

Password length and complexity

I am using CentOS and I want to set the minimum password length, minimum password expiry , maximum password expiry and password complexity in my system. I have looked over some tutorials to change ...
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2k views

Unable to mount cgroup

I've been searching for a solution to this problem but none was working. I would like to start my LXC container but i need to mount cgroup before. [root@stag-devCentOs ~]# lxc-start -n debianLxc ...
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2answers
358 views

How do I configure logging for ulimits?

I was wondering if anything gets logged when any ulimits are hit (open files, etc). If so, where is this logged, and what should I be looking for? I'm using CentOS 6.
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1answer
2k views

Upgrading kernel 2.6.18 to 2.6.32 on CentOS 5.10

I've been looking on Google for 4 hours and I can't find a solution to my problem. I have a computer running CentOS 5.10 using Kernel 2.6.18-371.9.1.el5 and I would like to upgrade my kernel to ...
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1answer
47k views

CentOS - install using yum Apache 2.4

I need Apache 2.4 in CentOS because with Apache 2.2 mod_proxy_wstunnel is not possible. I have tried this, but unfortunately its for RHEL. After installing, I can't execute the Apache 2.4. Can anyone ...
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1answer
236 views

How to Originate Call from Polycom Intercom via Dialplan

We have polycom phones for use with our Asterisk 1.8 PBX. Consider this: On the phone at extension 2536, I dial 3333. This should originate a call from extension 2500 to play a sound. In other ...
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2answers
4k views

eth0 not installed on CentOS

How would I go about installing eth0 on CentOS? When I do ifconfig -a, eth0 is not there. Here is the output of ip link: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue link/loopback ...
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3answers
82 views

CentOS returning 403 for all https URLs

We've found that all https URLs on a CentOS 6 VPS are returning a 403, across multiple vhosts. Is there a config setting somewhere that I should be looking for to check what's going on? Or a log to ...
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1answer
316 views

Why isn't this XMLStarlet Query Working?

I'm trying to write a simple bash script that parses price info from the ebay developer API search results. Here's an example of XML search results for "Detective Comics 700": ...
2
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1answer
78 views

How do I find the NetBSD release for CentOS 6.5?

I want to find the NetBSD rump package used for CentOS 6.5. The list is present here. I want to get the rump package for CentOS and after searching, I found this version of netbsd-rump used in ...
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438 views

How to start the Snort service with logging enabled?

I setup snort on Centos server and add as a service. When I use service snortd start command, the log file is created but it is empty. If I use snort -q -l /var/log/snort command, the log file created ...