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

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How to surpress audit daemon rotating log messages?

On a CentOS 7 system messages like these are logged several times a day: Sep 24 00:11:42 example.org auditd[756]: Audit daemon rotating log files Sep 24 00:26:23 example.org auditd[756]: Audit daemon ...
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1answer
524 views

Enable 9p filesystem type in Centos 6 virtual guest?

My question is linked to this one : http://stackoverflow.com/questions/17880460/mounting-shared-folder-in-kvm-vm-error-mount-unknown-filesystem-type-9p (but can't comment it) I have apparently the ...
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1answer
197 views

Saxon rpm build fails due to “ant: command not found”

Hopefully this is a question I can ask this community. I'm currently working on building zookeeper-3.4.5-13 for a CentOS 5 environment. During this process I've been going down a long list of required ...
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1answer
83 views

after installing centos 7 Windows7 is not working [on hold]

I installed Centos 7 using a live cd. But after that Windows is not booting. It directly going to the Centos only.
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2answers
41 views

What is the difference between installing software as root versus user?

I just installed CentOS 7 with Gnome desktop. In doing so, I created a root password, and added a user. Now I am logged in as the user. I like to install MariaDB server, PHP, and other software. To ...
4
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1answer
46 views

Centos 6.5 only using 24GB/48GB of memory

I recently installed an additional 32GB of memory in my Dell PowerEdge R900 home virtual machine server. Memory check passed and I booted into CentOS. When I opened the Virtual machine manager and ...
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0answers
9 views

Telnet no echo output from xinetd script

I have have installed xinetd, and I wrote a script: #!/bin/bash echo "Some text" touch /home/somefile I made a service configuration under /etc/xinetd.d/ and basically it works when I connect to ...
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0answers
17 views

No volume groups found after restoring CentOS image to VirtualBox VM

I used Clonezilla to backup an HP Proliant server running CentOS 5.10. I restored the image to a VirtualBox VM but when I try to boot I get an error of "No volume groups found" "Volume Group ...
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1answer
291 views

Unable to find an option to install CentOS 6.4 (64bit) in command line (linux text) for Asterisk

I am trying to learn Asterisk, so I downloaded the latest CentOS 6.4 (64bit) to install on VMWare Workstation 9. When I started the installation it is not giving any screen to start the installation ...
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1answer
48 views

rpmbuild library register for 'requires'

Big Picture: I am building an in-house rpm for a customized php. I build an rpm which works, but generate library requirements that I can't seem to meet without using 'nodeps', which I want to avoid ...
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1answer
45 views

How does Linux generate ssh keys after reboot?

I installed CentOS 7, and noticed that I have rsa and ecdsa keys generated. I deleted all of them and rebooted the machine. I got a new pair of rsa and ecdsa keys. How does Linux generate the keys? ...
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2answers
252 views

How do I install Exim and Horde on Centos 7 with MariaDB 10?

I can't find a guide for this (they are old and don't work) and I can't seem to manage to install it. I can't install Postfix because of its dependencies, so I'm going with Exim, which I installed ...
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0answers
16 views

Resources for learning Linux [on hold]

I'm new to linux. I know the basics, like moving from one directory to another and simple things like that. I need to learn the following things: - directory structure (where are the logs, ...
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0answers
6 views

How to upload a modified centos in Amazon marketplace [on hold]

I want to upload a modified centos in amazon aws marketplace.I already have aws account. What is the process for that.
4
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1answer
1k views

Can't resize lvm volume “lv_home is in use. e2fsck: Cannot continue, aborting”

I would like to shrink my logical volume for home directory, so that I can extend volume for root. df -h /dev/mapper/vg_mitoscomp-lv_root 50G 33G 15G 70% / /dev/mapper/vg_mitoscomp-lv_home ...
1
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0answers
12 views

Problems while executing slimerjs on linux (Centos 6.5 32bit)

I'm not used to work with Linux yet I wanted to try to use slimerjs on a Linux vps in order to have access to php exec function since most hosting companies disable that function. I did manage to ...
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1answer
2k views

How to remove Oracle Wallet using orapki?

Hi i'm on Centos using oracle 11g And i've created a wallet using : $ orapki wallet create -wallet /u01/app/oracle/admin/DB11G/wallet -pwd WalletPasswd123 -auto_login Now i want to remove it to ...
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0answers
12 views

Yum or Reposync: How can I slowly remove a repository without unintended dependency issues?

I have used reposync to create and maintain local copies of two repositories, remi and remi-test. These are repositories maintained by Remi Collet. On several systems in an internal LAN, I added both ...
2
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1answer
65 views

Bandwith Usage in OpenVPN

Is there any way to check how much bandwidth a user used in OpenVPN (using PAM Authentication)
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2answers
961 views

PPTP VPN in CentOS 7

I recently installed CentOS 7 (Gnome), but I realized that there are no options for setting up a PPTP VPN client. I tried to install networkmanager-pptp-gnome, but unfortunately it's not available in ...
3
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1answer
3k views

CentOS 6.5 Login Screen GDM Issues

I have a few issues with the GDM login screen. I am using CentOS 6.5 and installed GNOME. I was able to change the background of the login screen by replacing the default.png image on the system. ...
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2answers
326 views

Why can't I access to my ftp server with my local user account?

First of all I'm using Centos 6 server, putty and wordpress.org I followed the instructions from this link to set up vsftpd and ftp in centos server. For the vsftpd.conf file, these were the changes ...
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5answers
22k views

Why does find -mtime +1 only return files older than 2 days?

CentOS 5.9 I'm struggling to wrap my mind around why the find interprets file modification times the way it does. Specifically, I don't understand why the -mtime +1 doesn't show files less than 48 ...
2
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1answer
44 views

CentOS 7 created mdadm array disappears after reboot

I created a raid1 using the below disks and command: $ ls -l /dev/disk/by-id/ata-ST3000* lrwxrwxrwx 1 root root 9 Sep 19 07:27 /dev/disk/by-id/ata-ST3000DM001-9YN166_Z1F04NR1 -> ../../sdc ...
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9answers
53k views

Is CentOS exactly the same as RHEL?

I'm sure this question has been asked again and again elsewhere (I did not find anything specific to CentOS vs RHEL in SE), but I would still like to ask and confirm a few specific points. I am well ...
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1answer
78 views

Properly configuring symmetric active NTP?

I'm trying to configure two NTP servers to be peers to each other but I have no idea how to tell if it is working or not or whether my NTP configuration is even correct. I've put a simplified view of ...
2
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2answers
2k views

Hyperthreading not detected by Linux [on hold]

I have a Dell server with two Intel Xeon E5645 cpus, each cpu has 6 cores, and each core is hyperthreaded (i.e. should be equivalent to two virtual cores). I installed CentOS 6.2 on this server and it ...
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1answer
15 views

Empty kernel processes on CentOS vps : 2 different servers

I'm not sure I'm asking correctly, or perhaps I'm just looking at the wrong things. I'm migrating from one CentOS Vps (on an OpenVZ box) to another CentOS VPS (on a VMWare box). VPS #1 = CentOS ...
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1answer
25 views

How to install mutliple PHP instances and configure for Apache

I need to upgrade my PHP installation on CentOS 6 from 5.3 to 5.5. While I have a couple of webprojects running I like first to install the new PHP in parallel and switch back to the old one if ...
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0answers
49 views

Password-less ssh authentication refuses to work [closed]

I have looked at the similar questions but none of them address my issue. I have a CentOS 7 VirtualBox guest running in a Windows 7 host PC. I'm trying to get password-less ssh to work since I must ...
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4answers
2k views

Commands not found: netstat, nmap on CentOS 7

I'm using the following CentOS: $ cat /etc/centos-release CentOS Linux release 7.0.1406 (Core) The commands nmap, netstat and lsof are not found on CentOS7. Why? $ type -a nmap bash: type: nmap: ...
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1answer
658 views

Upgrade OpenGL from 1.2 to 2 for Nvidia GT218 [GeForce 310]

To run my application OpenGL version 2.0 or higher is required. glxinfo | grep OpenGL yields: Xlib: extension "NV-GLX" missing on display ":1007.0". OpenGL vendor string: Mesa project: ...
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5answers
19k views

Kipmi0 eating up to 99.8% cpu on centos 6.4

We have CentOS 6.4 and the kipmi0 is showing as 99.8%cpu and 0.0% memory and load average is 1.00. What should we do to rectify on this?
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1answer
1k views

What caused my CentOS 6.4 box to reboot itself?

I noticed that the MySQL daemon running on my CentOS 6.4 machine was suddenly not running anymore. I checked the MySQL log, but didn't see anything relevant: 121229 22:17:45 mysqld_safe mysqld from ...
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1answer
6k views

enable apache mod rewrites to load clean-urls

In CentOS, a2enmod rewrite results in “command not found” but httpd -M lists rewrite module as listed and shared. I'm trying to enable it so can then have these rewrite rule apply so I can switch back ...
2
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1answer
20 views

autofs does not prompt for password when needed

I am trying to setup an automount point using autofs to mount a samba fileshare. I am using the following syntax in my auto.misc file mydir -fstype=cifs,rw,user=myusername ...
2
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1answer
3k views

LDAP authentication broken with upgrade to CentOS 6.4 (sssd)

I have OpenLDAP server: @(#) $OpenLDAP: slapd 2.4.23 (Aug 8 2012 16:29:21) In my configuration have group: ldapsearch -x -b 'cn=groupname,ou=UnixShell,ou=Services,o=example,c=ru' # extended LDIF ...
4
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1answer
381 views

How to change the repository settings for yum installer?

I am pretty much new to Linux. I am trying to install tint2 on CentOS. When I try to install using the command yum install tint2, it gave following error checking for X11... configure: error: Package ...
2
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2answers
1k views

Static routes in route-eth0 ignored

Why might route-eth0 be ignored but route-eth1 not? Might be because eth0 is using DHCP and eth1 is statically-configured? I have some static routes configured in ...
3
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2answers
155 views

First key pressed repeates forever

I just installed CentOS 6.4 on an old machine I acquired for a development box, but I am running into keyboard issues I can't get around. I start the machine and go to type a user name in and ...
2
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1answer
48 views

How to Mount a Drive with Right Filesystem?

I am trying to mount the device /dev/xvdc on my CentOS system. When I run an fdisk command I get: Device Boot Start End Blocks Id System /dev/xvda1 * 1 33 ...
4
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1answer
324 views

Windows Changes File Permissions in Samba File Shares

I have mounted an external USB drive that is used for file shares on CentOS. All of the clients access the shares are Windows XP or 7. Within Windows, I use the "Manage your credentials" feature in ...
4
votes
3answers
959 views

No font in emacs on CentOS

When I open emacs over an SSH connection I get this error Warning: Cannot convert string "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*" to type FontStruct Warning: Cannot convert string ...
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2answers
54 views

Issue in Asterisk Performance

I am running FreePBX on DigitalOcean VM. I am facing some call dropping issue in Asterisk. When looking at "htop", "top" and FreePBX GUI, I see different results of CPU utilization and can't ...
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0answers
48 views

CentOS 7 persistent routing issue?

I have Googled a lot but still can't find a working way on how to make some persistent routes on centOS 7. [root@asd network-scripts]# route -n Kernel IP routing table Destination Gateway ...
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1answer
321 views

Can't yum WINE from repo - No package wine available

I'm trying to install WINE on Centos 5.10 as per some instructions I wrote last year using this instruction: # yum install wine However when run, it can't find any package under that name: # yum ...
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1answer
933 views

Setting up SMTP-AUTH & TLS in Postfix

So I have been in the process of installing a Postfix Server on my CentOS 6.2 Virtual Private Server. I have been following this tutorial: ...
1
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3answers
639 views

rsync: samba vs ftp for backup

I need to back up ~0.5 TB of files (about 600,000 of them) from a Windows Server 2003 machine to a CentOS 6.4 machine across a 100MB network, and update them once a night. The backup script would be ...
0
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1answer
95 views

Unable to install ATI Catalyst drivers under CentOS 7

I'm getting an error running ./amd-driver-installer-14.20-x86.x86_64.run # ./amd-driver-installer-14.20-x86.x86_64.run Created directory fglrx-install.xjgOcJ Verifying archive integrity... All good. ...
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1answer
430 views

Unable to view traps through snmptrad?

I've been unable to view traps through snmptrapd. I generated a SNMP trap manually using the below provided snmptrap command: snmptrap -c public -v 2c -n "" localhost 0 uptime But I'm ...