CentOS is a Linux distribution standing for "Community ENTerprise Operating System" and is a rebuild of "Red Hat Enterprise Linux" (RHEL). The "CentOS6" tag refers to versions 6.x of CentOS.

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I need to mount directory from one hdd to public_html folder [duplicate]

Possible Duplicate: Hard drive on server which hosts public_html folder is full. What to do? i have a hard drive (1TB) which has a folder named "flvideo2" i need to mount into ...
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2k views

httpd, vsftpd and the annoying selinux

I have a CentOS 6.3 installed with httpd running and vsftpd but I am unable to balance permission between the user able to upload over ftp and their website working. What I do: I create a user with ...
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2answers
856 views

CIFS Mounting Permissions

I have an issue that I;m going round in circles with, I hope you can help. The Set up: Server 1 (CIFS Client) - CentOS 6.3 AD integrated uing Samba/Winbind & idmap_ad Server 2 (CIFS Server) - ...
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1answer
588 views

Windows 7 NFS client slow

I have a CentOS 6 VM running on a Windows 7 host. I have NFS server running on the VM, and mounting it via windows' built-in NFS client on the windows host. However, it is incredibly slow. Namely, ...
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2answers
897 views

anacron screws my crontab?

My system is CentOS 6.3 , I notice my /etc/cron.daily are not executed at 4:01 AM , instead , these scripts are executed at random time . I searched and seemed it is 'anacron' that screws up my ...
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136 views

Running adb from PHP

I moved from Ubuntu to CentOS and I now have a problem running adb from PHP. I am trying to execute shell_exec("/path/to/adb devices"); and I get: ADB server didn't ACK failed to start daemon error ...
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450 views

SSHFS on startup CentOS 6.3

I edited the file /etc/rc.d/rc.local and added the following lines in order to mount a remote directory through sshfs at boot time: su user -c "/usr/bin/sshfs -o idmap=user -o reconnect -o ...
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5answers
3k views

How do I automate OS installation on 500+ machines?

My company has to image a large amount of machines by the end of the year. Each of the machines will have hardware RAID 1 and running CentOS 6. What options do I have for automating the OS ...
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468 views

Doubled up RAM to 32 GB - now how to speed up a “LAPP” server?

I run a small Facebook game at a CentOS 6.3 quad core machine with PostgreSQL 8.4.3 + few PHP scripts (doing mostly select queries) + 1 Perl daemon and even though the server worked ok, I've suggested ...
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1k views

Create a super user in MySQL 5.5 not working: Permission denied for root@localhost

Using CentOS 6, logged in to MySQL as root, entering the command: create user 'user123' identified by 'pass123'; works fine. But when I try and give that user super user privileges with: grant ...
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1k views

Where located /etc/ldap.conf in CentOS 6.3?

Where I can find /etc/ldap.conf file to configure system authentication through LDAP in CentOS 6.3?
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4answers
4k views

CentOS iscsi initiator has session but there is no block device

I have installed the scsi-target-utils package on CentOS and I used it to perform a discovery. The discovery did give me an active session. I restarted the iscsi service but I do not see any new ...
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2k views

CentOS 6 gnome-terminal font is garbled until Arabic Support is installed

My default VM images for CentOS 6 are always installed with the most minimal set of packages. When I need a machine with a graphical install, I upgrade with yum groupinstall Desktop. I've noticed ...
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1answer
378 views

Is this an OK way to install Apache with SSL on CentOS 6?

I'm setting up a CentOS 6 server on a VPS. I've worked with Apache before, but I've never dealt with CentOS 6. I guess it would just be this right? sudo yum install httpd -y sudo yum install mod_ssl ...
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1k views

VM does not show up in virt-manager, how to troubleshoot?

I spun up a VM using virsh create, and I am able to see the VM in virsh list, however, when I run virt-manager, I am unable to see the VM in the GUI I am trying to use virt-manager to access the VM ...
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1answer
38 views

Secondary backup server

I've been given a task to implement a backup solution in the event of our website goes down. It is a dedicated server running centos 6. From what i've experience on our server, our server may go down ...
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1answer
2k views

How to update Tomcat on Centos 6.3?

I'm running CentOS release 6.3 (Final) and I have Tomcat 6.0.24 installed: # yum info tomcat6 Loaded plugins: fastestmirror, presto, priorities Loading mirror speeds from cached hostfile * base: ...
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127 views

Installing a custom 'non-rpm' kernel in CentOS 6

I've built a custom kernel using kernel.org, it has no .rpm file. How do I manually: Install the Modules to /lib/modules (make moduleinstall or something?) Make the initial ramdisk Update grub I ...
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3answers
1k views

Is Linux 3 kernel series compatible with CentOS 6?

For proper TPROXY support I was looking for a STABLE Linux kernel of at least version 3.2.30. Do they want us to upgrade to version 3 of the kernel? And is that compatible with CentOS 6?
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1answer
180 views

OpenVZ VMs redirect to main node?

I have a new fresh CentOs 6 machine and have SoulsVM and OpenVz installed on it. When I create VPS it came online with no problem. When I try to SSH to the VPS it gave me "Access Denied." I reset ...
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2answers
345 views

Should logs for /opt go in /var/opt or /var/log?

A package I'm using (Graphite) insists on installing into /opt/graphite. Should logs go into /var/opt/graphite/log, or /var/log/graphite? Presume we want to be as FHS as possible. I'm using CentOS ...
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2answers
3k views

does KVM raw images support preallocation?

I was trying to create a raw image with this command: qemu-img create -f raw -o size=200G,preallocation=metadata file.img but seem that it raw images doesn't support preallocation. if so why there ...
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4answers
1k views

iSCSI timeouts under high load

I have two servers connected via Gigabit Ethernet. One is iSCSI target, the second one is initiator. When I run mkfs.ext4 at initiator, after a while disk IO slows down critically in target. In the ...
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3answers
9k views

Can't create LVM due to: not found (or ignored by filtering)

I'm planning to use LVM for KVM, and when I try to create a VG it fails, so how can I create my VG and LV ? Thanks [root@server ~]# vgcreate virtual-machines /dev/sda Device /dev/sda not found (or ...
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1answer
529 views

Lustre - issues with simple setup

Issue: I'm trying to assess the (possible) use of Lustre for our group. To this end I've been trying to create a simple system to explore the nuances. I can't seem to get past the 'llmount.sh' test ...
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1answer
122 views

Enabling one interface breaks connectivity on another

I got a server with 2 NIC's. One is the external interface, that has a public IP. When only that interface is up, I can ping it fine from our internal network. When I enable the second interface ...
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2answers
5k views

pg_dump not working - do I need to change order of $PATH?

I'm trying to set the $PATH to pick up the latest version of pg_dump as I'm currently getting a mismatch error while doing a migrate in my Rails app (I recently changed the schema type to SQL). I ...
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1answer
679 views

APC module causing strange error

When I run php -v I get: PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/apc.so' - /usr/lib64/php/modules/apc.so: undefined symbol: php_pcre_exec in Unknown on ...
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2answers
984 views

howto remove udev from centos(lxc-guest) without dependencies

i downloaded a openvz template for my lxc server to create a new centos 6.3 guest. Now the guest is not starting because udev is hanging in the boot process. Last time i didn't had this problem but ...
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4answers
7k views

How to install php-devel under CentOS 6.3 x64?

I'm trying to install php-devel on my CentOS 6.3 VPS and get a failed dependencies test. From phpinfos(): SYSTEM Linux 2.6.32-279.5.2.el6.x86_64 #1 x86_64 NTS error: Failed dependencies: ...
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2answers
13k views

How to add interface alias on RHEL6 or CentOS6 with NetworkManager?

How to add a network interface alias (for example eth0:0) on CentOS6 or RHEL6 in the "correct" way that is through NetworkManager without NM_CONTROLLED=no. And this has to be done without GUI. Thank ...
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1answer
227 views

Error installing Vips

I am trying to install Vips, I've downloaded the latest files: wget http://www.vips.ecs.soton.ac.uk/supported/current/vips-7.30.0.tar.gz wget ...
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301 views

Grep /var/log for hacker/script kiddy activity and e-mail?

CentOS 6 Apache Server version: Apache/2.2.15 (Unix) Thinking about how to automatically, once a day, grep all the logs in /var/log/httpd for hacker, phishing, etc activity and e-mail it to myself so ...
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3answers
137 views

MySQL replicate multiple places

Very trick task to find a good title for this question, but here goes the q: I have a few development machines, where I develop my PHP applications on, and testing via a local webserver. This works ...
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1answer
3k views

Can't access server running CentOS 6.3 in vmware

I just installed CentOS on a vmware machine that uses a bridged connection, installed apache, php and mysql, but when I run service httpd start I get a warning(?): Starting httpd: httpd: Could not ...
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1answer
239 views

Sphinx search on RHEL / CentOS MySQL cluster

Is it possible to add a new resource type to an RHEL or CentOS 6.x cluster, in order to allow Sphinx fulltext search to run alongside MySQL? The clusters are managed using luci/ricci and cman.
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4answers
6k views

PHP short_open_tag Won't Enable (CentOS 6)

I'm setting up an Apache2, PHP 5.3.3 server running on CentOS 6. My web application uses the short tags <? and <?=. I can't seem to get the short tags enabled. When I run phpinfo() I see ...
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2answers
656 views

Cannot start httpd service with SSL

Have an issue where I have installed new certificates on Centos 5 and modified the conf file for the following lines: SSLCertificateFile /etc/pki/tls.certs/name.crt SSLCertificateKeyFile ...
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2answers
739 views

CentOS 6 Kickstart Minimal Install: for JVM, MySQL, and Apache VMs

Trying to put together a kickstart as per this file for "true" minimal installations of CentOS 6 to run on an ESXi (v4.1u2) virtualization server (lives behind a Cisco ASA) Ideally the OS footprint ...
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1answer
2k views

Changing Active Directory password over LDAP using passwd/ldappasswd/Samba

I am trying to change the Active Directory (on a Windows 2008 server) from a CentOS 6.2 machine over openLDAP. I have tried passwd, ldappasswd and trying to see if I can do it with Samba without the ...
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1answer
173 views

How to manage an unmanaged Virtual Private Server [duplicate]

Possible Duplicate: Setting up and configuring a new VPS server I just bought a VPS from constant.com. It is unmanaged. I'm wondering if anyone has a good 101 guide or any tutorial to help ...
0
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1answer
506 views

Rsync delta copy not working for virtual disk

I have tried rsync for copying VMs to remote host but the deltacopy does not seem to work. I am using Virtualbox on CentOS 6.2. My VM has 1 snapshot so I just copy the snapshot file instead of the ...
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1answer
218 views

replace an IP@ by a URL using Apache [closed]

I've just installed a webapp (sakai precisely) in a CentOs 6.2 server. sakai is accessible via @ip:8080/portal, and I need to replace that adresse by a normal URL: www.exapmle.com/sakai I've already ...
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1answer
326 views

Add module to custom compiled PHP

In CentOS I have a compiled version of PHP but it is missing IMAP module. Is it possible to add that module without re-compiling php?
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5answers
893 views

CentOS replacement for PHP development machine?

I'm just starting learning Linux. I'm using CentOS 6.3 and i really like it. However I need PHP 5.4, currently not available for CentOS. I've read that CentOS, for its very own nature, doesn't update ...
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3answers
1k views

Install Java EE 6 on CentOS 6

Having problems installing Java EE 6 in CentOS 6 x32. I have removed all previous version of Java and freshly installed temporally jdk1.6.0_34. So my $PATH variable goes to: ...
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4answers
451 views

Install packages that must be self-compiled on CentOS server is a bad practice?

I have a CentOS 6 server that is in production and actually is hosting a few sites. I should now install Redmine which runs on Ruby. The remi/ephel repository gives me Ruby 1.8.7 but I would like to ...
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1answer
978 views

mdadm and blkid give different uuid

We recently replaced a hard disk in a server and reinstalled the operating system (Centos 6) The raid rebuilds itself every boot; /dev/md2 is losing a disk each time apparently. Always the same ...
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1answer
3k views

Can't connect to Ruby on Rails Development Server on Centos 6.3

I've having trouble connecting to my Ruby on Rails development server: When I type in 192.168.0.10:3000 into a web browser on a different the connection just times out. I suspect the problem is with ...
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1answer
1k views

Can't ping website but can browse it

I have server with CentOS 6.2 installed. The problem is that i can browse the website on it, but i can't ping it. What can cause this?