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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1answer
2k views

How do I open custom ports in my iptables firewall? [closed]

I need IPTables, like everyone else, but I don't use it enough to really keep my knowledge complete and fresh. The setup utility in CentOS is too basic. It doesn't seem to allow me to open up custom ...
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1answer
294 views

Edit a file on CentOS 6.3 Minimal [closed]

I installed CentOS 6.3 Minimal on VMWare Player, and I realized how 'minimal' the setup is... Don't have network connectivity. From what I searched on google, I need to edit the file ...
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1answer
91 views

Accessing apache Webserver Over local Network

I have installed Apache Web Server on an CentOS 6 machine and configured it to run listen on an IP X.X.X.X:8080 in httpd.conf file but it is not working when i tried to access the Web server from ...
5
votes
1answer
3k views

Starfield Wildcard SSL Certificate Not Trusted in All Browsers

I am at a loss as to what else I might try in order to debug this issue with a Starfield Wildcard SSL Certificate. The problem is that in certain browsers (Safari or the most-updated chrome you can ...
2
votes
1answer
775 views

Kickstart CentOS 6 prompting for TCP/IP with network set to DHCP

I am trying to stop my kickstart CentOS install prompting me for TCP/IP information. After I click through this prompt (keeping IPv4 and IPv6 to their defaults) the installation continues and ...
0
votes
1answer
445 views

Windows NX client can't connect to FreeNX server

After my Centos 6 server was powered down without a clean shutdown, I can't connect to the FreeNX service. I get errors like: xrdb: No such file or directory xrdb: Can't open display ':1001' How ...
1
vote
2answers
714 views

How to make 2 linux machines accept each other ssh connections without asking for a password

I need to create a cron script that will scp all the logs from one machine to a log parsing machine but when I scp I am requested to insert a password. Usually, when I connect to the servers using ...
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1answer
585 views

disk partition centos

I am setting up server for hosting two WordPress which has size of around 70GB. I have already installed CentOS as OS and I would like to partition the Disk. Is there any tool which can help me or can ...
4
votes
1answer
1k views

chkconfig creating service symlinks with the wrong order

On RHEL 6.3, I have a system service that should be starting after postgresql and httpd (order 64 and 85, respectively), but chkconfig always places it at order 50. I tried an experiment on a CentOS ...
5
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2answers
4k views

How to uninstall git installed from the source? [closed]

I installed the git using this article. Now I want to uninstall the git. How to do it?
0
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1answer
5k views

How do you configure /etc/pam.d/system-auth-ac on CentOS 6 using authconfig?

I'm trying to replace the cracklib module with passwdqc. Every time I do an authconfig --update (or --updateall), the changes I make on the system-auth-ac file goes away. The authconfig command line ...
1
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0answers
289 views

ESXi 4.1 CentOS 6.X eth0 unnavailable

I don't usually ask for help so directly, usually google have all i need but this time i'm seriously lost. Hope you can help me .s The thing is, i have a server with Vmware ESXi 4.1 and 5 already ...
0
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1answer
734 views

Configuring openLDAP in CentOS 6.3

I have followed the instructions found in this question until the part that I have to do an ldapadd using "cn=Manager,dc=syco,dc=net" as DN. However, I am getting the error Invalid Credentials (49) ...
2
votes
1answer
393 views

BIND DNS strange behaviour resolving dns

CentOS 6.3 BIND version 9.8.2 Server is acting as my local network's DNS server. What happens is that I can resolve jquery.com fine, but accessing code.jquery.com results in nothing found when ...
3
votes
2answers
717 views

Linux servers going into Halt when pressing Control-D in putty or exit in the shell

Since today at noon, there's a number of Linux CentOS servers which are going to Halt whenever i type exit or use Control-D to close the putty window. Did anyone encounter this weird behavior before? ...
0
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1answer
1k views

automount a windows share

I have this line and it works mount -t cifs -o myuser //192.168.0.12/Public/Docs /mnt/cifs_shares/Docs But then I try with autofs and it doesn't In /etc/auto.master: /mnt/cifs_shares/Docs ...
1
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1answer
1k views

CentOS release 6.3 (Final) php-mcrypt Install Fails [closed]

I got a clean installation of CentOS 6.3, with php 5.3.18. I tried installing the epel-release-6-7.noarch.rpm and epel-release-6-7.noarch.rpm in order to run # yum install php-mcrypt However it ...
0
votes
2answers
604 views

Trying to install SawMill and getting the following error:

[root@sawmill sawmill]# ./sawmill ./sawmill: error while loading shared libraries: libldap-2.3.so.0: cannot open shared object file: No such file or directory Using yum provides libldap_r-2.3.so.0 i ...
0
votes
1answer
1k views

Which mirror should I use to download Kernel Xen 6.3? [closed]

I'm following this construction to install (version 4.1.2) on a CentOS 6.2 (x86_64) system. When I use this command yum install http://au1.mirror.crc.id.au/repo/kernel-xen-release-6-3.noarch.rpm I ...
0
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2answers
2k views

KVM/Qemu Guest Shutdown problems

on both host and guest running CentOS 6.3 with KVM/Qemu virtualization, I have the following scenarios: "virsh shutdown kvm1" did not shutdown at all. virsh lists guest as running. "service ...
0
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1answer
588 views

KVM with external IP without NAT?

I have a CentOS 6.3 server with 1 NIC (eth0) and an external IP (lets say 1.2.3.4). On this server I'm running a CentOS 5.6 KVM with the "default settings" (virbr0 on 192.168.122.x). What I want to ...
4
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4answers
12k views

tomcat6 on CentOS 6: cannot stop/restart service

I have this problem with stopping and starting tomcat6 (package from the repos). I've seen with several CentOS 6 and RHEL 6 boxes. The symptoms are that when I want to restart or stop tomcat6 it just ...
5
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4answers
23k views

Centos 6.3 Bind hangs on “Generating /etc/rndc.key”

I'm installing bind on a clean Centos 6.3 system. In previous versions that would work like a charm, but now I get Generating /etc/rndc.key when trying to start bind after the installation. ...
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1answer
2k views

Error installing OAuth on CentOS 6.0

I'm not sure what to do here cause I'm getting the same type of error overall as i try to install oAuth on this cloud slice. I'm not sure what to do but I would think that I need to update or ...
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2answers
6k views

How do I get my Proxmox VM to access the internet without a public IP address

I would like to create a proxmox vm and have that vm be able to ping/access external websites without having to assign a public ip to it. How do I do this? The VM is running centos 6
1
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1answer
2k views

Zabbix not getting data for one filesystem

I have Zabbix monitoring disk space for several volumes on several servers. It works fine on all of them except for one of the volumes on one of the servers which always reports as 0. However, when I ...
3
votes
1answer
278 views

Sync virtual machine hostname to displayName in VMware ESXi 5.1

How can I read the paramater called displayName in the .vmx file or "Virtual Machine Name" in vSphere Client from within the VM. If this is possible with vmtoolsd I haven't found it yet. ...
1
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1answer
91 views

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 ...
3
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1answer
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 ...
2
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2answers
881 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) - ...
0
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1answer
627 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, ...
2
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2answers
952 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 ...
0
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1answer
143 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 ...
0
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2answers
487 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 ...
2
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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 ...
1
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1answer
489 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 ...
0
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2answers
2k 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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2answers
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
5k 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 ...
0
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1answer
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 ...
0
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1answer
382 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 ...
0
votes
1answer
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 ...
0
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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
3k 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: ...
0
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1answer
130 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?
1
vote
1answer
187 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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vote
2answers
390 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 ...