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

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1
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2answers
40 views

Piping tcpdump traffic via SSH - but no root ssh access

The situation I would like to use Wireshark to analyze traffic on one of our servers, but I don't want to install Wireshark on the server itself. I understand that I can pipe tcpdump traffic via SSH ...
0
votes
1answer
24 views

Commands not found: netstat, nmap on CentOS 7

The commands nmap, netstat and lsof are not found on CentOS7. Why? What should I do to make them work?
5
votes
4answers
493 views

Automatically acquire new IP address in new network

I'm running a Centos virtual machine on a laptop using a bridged network connection to avoid double-NAT issues, with the address assigned via DHCP. This works fine until I move the laptop to another ...
2
votes
3answers
423 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 https://fedorahosted.org/SoftwareCollections/ but unfortunately its for RHEL after installing i ...
1
vote
2answers
17 views

Centos rpm -qa vs yum list installed

I want to have server b to have exactly the same setup as server a. My plan is to have a list of all installed things on server a and install it by using the list on server b something like : yum ...
0
votes
0answers
6 views

Why SAMP is not listening to the port

I have forwarded 38474 port to internal port 7778. Then I launched San Andreas Multiplayer on my CentOS server. When I'm typing netstat -npl I see this: Proto: tcp Recv-Q: 0 Send-Q: 0 Local Address: ...
0
votes
0answers
5 views

Avahi daemon can't launch due to dbus-daemon problems

I'm trying to run avahi-daemon on CentOS 6.5, but when I run it I get this error: bash-4.1# avahi-daemon Found user 'avahi' (UID 70) and group 'avahi' (GID 70). Successfully dropped root privileges. ...
2
votes
1answer
27 views

rpm macros on CentOS 6.5

Trying to create a spec file for a CentOS 6.5 system. The rpm should check release to add specific Requires: lines based on the OS version....and it doesn't work at all: Spec file snippet: %if ...
1
vote
2answers
40 views

Possible corrupt passwd file

I did a recovery of the server and reset the root password to a new one because for some reason, the original was not being recognised. It still is refusing to accept the password in ssh for root. ...
5
votes
1answer
43 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
votes
1answer
39 views

How can I list all the dependencies necessary to install PHP-Soap?

I have a server running Centos 5.10 with no internet access that I control remotely on which I'd like to install PHP-Soap. I also have an identical box in the office which is a clone of the remote ...
0
votes
1answer
45 views

Can't wget from github, sslv3 handshake error

We have a script that downloads mod security from github that has recently started failing. The servers run CentOS 6 but RHEL 6 probably has the same issue. The output is: # wget ...
4
votes
1answer
412 views

CentOS - how to install vsftpd for specific username to have specific directory access only?

I have VSFTPD installed in CentOS. Where i have one username "lesstrust1", when the user login i want the user only can upload/download to this path /var/www/html/oxwall $ yum install vsfptd $ ...
2
votes
1answer
51 views

set up centos7, configuration of ip

when I'm searching for ip setting of centos 7. Responed is centos 6.X 's or ealier, and I tried. But how is the default DHCP configuration of centos 7. Some configurations have been done like I want ...
2
votes
1answer
15 views

Virtual Host only works when SELinux is set to permissive - why?

Wondering why my virtual hosts will only work when SELinux is set to "permissive". When SELinux is set to "enforce" my virtual hosts are ignored and default host is shown. Apache/2.2.15 (Unix) Here ...
0
votes
1answer
376 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 ...
0
votes
1answer
53 views

Create ssh root password

For some reason, after a plesk update, I can no longer login to ssh as root using my old password. I have tried to create a user with: /bin/bash & /bin/bash (chrooted) in plesk Which lets me ...
4
votes
1answer
135 views

ifconfig command not found

I've just installed CentOS7 as a virtual machine on my mac (osx10.9.3 + virtualbox) .Running ifconfig returns command not found. Also running sudo /sbin/ifconfig returns commmand not found. I am root. ...
1
vote
1answer
18 views

How to update tcpdump?

I would like to update tcpdump on my computer (CentOS 6.5) which is currently old. I download the zip file from TCPDUMP/LIBPCAP public repository already but I don't know how to update with this file. ...
1
vote
0answers
26 views

Virtual Host setup works for one server, not another

Having an issue with my virtual host set up. Used this tutorial as a reference on both: http://youtu.be/wXIJMtwmPCE Apache/2.2.15 (Unix) on both servers. Seemingly Identical httpd.conf file on both ...
8
votes
3answers
469 views

Using real time kernel headers to compile userspace code vs default headers

Per customer requirements, I installed CentOS 5.6 with the default kernel. With this kernel installed, the time.h file includes the #define CLOCK_MONOTONIC. Now, a real-time kernel was installed ...
0
votes
0answers
41 views
+50

openswan l2tp/IPsec VPN server (NAT'ed)

I have searched for a solution for this problem for a few days now and cannot seem to find anything close to my situation (server is always NAT'd and clients are sometimes NAT'd). I am trying to ...
2
votes
1answer
89 views

Problem setting up iptables (LDAP traffic blocked)

My application server is on a network protected by a organization wide firewall, and my server is also using fail2ban. That said, I'd like to set up an additional layer of protection with iptables. ...
2
votes
0answers
23 views

iptables hangs at applying rules

I have a set of rules that are supposed to give me the most protection before things like fail2ban and other things are added to the mix. The issue is that although everything checks out in the test, ...
0
votes
0answers
12 views

VMWare CenOS files disappear after reboot

Solved: I used install to hard disk file from CentOS desktop. after instalation I have two CentOS in VMWare player. The new installation saves everything. I've installed VMWare player and CentOS on ...
2
votes
0answers
122 views

Centos 7 and VNC access right?

I've installed (Tiger) VNC Server on a new Centos 7 install. It seems to be working ok but when I use VNC to connect as user admin (created as ua system administrator) it does not get administrator ...
0
votes
0answers
22 views

port being in use not displayed in netstat output

In what scenarios port being used by a process don't show up in netstat -a output. I'm running jenkins on my machine. It's listening on port 8080. I'm trying to start another process that tries to ...
0
votes
1answer
28 views

Apache Virtual Host Include Not Working

Attempting to get my domain to redirect to the associated vitual hosts, but the Include is not working as expected and displaying the proper htdocs directory. It is still displaying the default apache ...
2
votes
1answer
49 views

Unable to access website hosted on virtual machine

I'm on a mac (osx 10.9.3) running CentOS7 in virtualbox. I would like to access the website hosted on the virtual machine. Browsing to the Guest IP returns webpage not available. I'm able to ping and ...
1
vote
0answers
34 views

Unable to start apache

I'm running CentOS7 in virtualbox on a mac (osx 10.9.3). Ultimately, I want to acces the website on my Guest VM from my Host. I can Ping and SSH to VM but I can't acces the webpage when entering the ...
2
votes
1answer
530 views

Fedora 14 Xen virtual machine does not detect network

I'm trying to create a para-virt Fedora 14 Xen vm on a host running CentOS 5.5. The VM appears to initially install correctly (the installer finds eth0 and can access the installation media). But when ...
0
votes
1answer
30 views

What's the default server root path (CentOS7)

In /etc/httpd/conf/httpd.conf line 36 the ServerRoot is set. Mine is : ServerRoot /etc/httpd But this returns a syntax error when I try to start httpd service. Can anyone give me the default ...
2
votes
2answers
374 views

SMB Mount To Windows Server Appears to Lock up. Any Ideas?

We are running CentOS 6.3 with all the latest updates. (Attempt to resolve this issue) The Server I am trying to connect to is a Windows Server 2008 R2 box. Though this applies to our old SBS'03 Box ...
0
votes
2answers
240 views

CentOS 5: My Postgresql server version is different with my psql client. What should I do?

I installed PostgreSQL 9.1 in CentOS 5 x86_64 VPS, with these following commands: I specified which Postgresql version I'd like to install, so I choose 9.1 because I want to equate between ...
0
votes
2answers
869 views

How to update CentOS 6.5 to kernel 2.6.32-431?

I need to update my CentOS 6.5 kernel to 2.6.32-431. Running yum clean all && yum update doesn't do it for me. How do I update? And what could be the issue? [root@centos64 ~]# uname -r ...
1
vote
1answer
13 views

'altinstall' python-devel; can't install psycopg2 on centos

I installed python2.7 on my centos 2.6.32-431.17.1.el6.x86_64 following these directions: http://toomuchdata.com/2014/02/16/how-to-install-python-on-centos/ #after the yum stuff... # Python ...
1
vote
0answers
366 views

mysqld dead but pid file exists

Webserver was running fine for weeks then suddenly: I can access, but I am unable to log into Webmin I can access Magento, a php-based storefront application, but I am no longer able to log in and ...
0
votes
1answer
13 views

Cobbler+Kickstart $basearch problems

I'm using CentOS 6.5 with Cobbler 2.4 (from EPEL). I'm trying to use a heredoc comment to create a repo file (which works) without the $basearch being interpreted. What happens is the file is created ...
1
vote
1answer
312 views

Installed Centos 7 after Windows and can't boot into Centos

I wanted to setup a dual boot for Windows 7 and Centos 7 I had a Windows 7 machine with 500GB disk. I shrank the Windows partition to provide space for Centos 7 (roughly 230GB). I created a USB ...
7
votes
2answers
17k views

How To Install Virtualbox Guest Additions On CentOS via Command Line only

Reading the Virtualbox user manual, I finally got [here], which explains how to install Virtualbox Guest Additions on a Linux guest via Command Line. But it's not clear enough for me (I just started ...
-3
votes
0answers
20 views

How can I change FQDN on Zpanel on CentOS? [closed]

I put server name instead of FQDN by mistake while zpanel installation and now want to change it.
1
vote
3answers
1k views

Virtual Interface Not Showing up in ifconfig?

I am trying to create a virtual interface for the purpose of NameBased Virtual Hosting on my CentOS linux box; please find below is the devices' information:- DEVICE=eth0 BOOTPROTO=dhcp ...
4
votes
3answers
186 views

Lots of traffic between servers - where does it come from?

We have ten servers in two groups servers, and there is a lot of traffic between those groups - too much we think. We know this because of stats of our provider, but don't know how this traffic is ...
0
votes
1answer
34 views

Centos 6.5 from Desktop to basic server

I have already installed centos6.5 on a virtualbox, and I realized that I missed choosing the the basic server mode,can I change it now that the installation is over ?
-2
votes
0answers
16 views

Which installation instruction should I follow for CentOS? Redhat, Fedora or Generic Linux? [closed]

When I try to install some applications on CentOS 6.5, I got confused which instruction should I follow. With my shallow knowledge, CentOS is based on RedHat, which based on Fedora. So, I think that ...
0
votes
1answer
55 views

Yum on CentOS 7 repositories may be broken

Just got CentOS 7 on a new server and I went yum install httpd and it went fine. Afterwards I went yum install mysql-server and I got No package mysql-server available. I haven't messed up with the ...
9
votes
2answers
481 views

( /etc/sysconfig/iptables ) “Manual customization of this file is not recommended.” Why?

Editing this file directly /etc/sysconfig/iptables can save me so much headaches so much time and so on... and yet on the very top of the file it says.. Manual customization of this file is not ...
3
votes
2answers
343 views

Make problem with includes

I am installing imagick-v3.1.0RC2 package on CentOS 5.5. I have ImageMagick 6.7.9-9 installed as well and have a problem on the make step. Problem is that its cannot find included file: ...
4
votes
1answer
78 views

Poorly performing java application vs poorly performing server

This is a very generic question, but it has been coming up more and more often for me. I would like to try and determine an appropriate course of action for this generic case, as I think it could ...
12
votes
3answers
23k views

Why the default eth0 interface is down by default on CentOS?

I am already a little bit familiar with Linux distros like Debian or Ubuntu (yeah, very similar) but I wanted to try Red Hat based - CentOS 6.2 . I have installed it on my Windows 7 host in virtualBox ...