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

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restricting remote vpn login to ip address in CentOS 7

I have read that OpenSSH itself does not support authentication via specific IP address. In a CentOS 7 installation on a web server, how would one configure the login so that a user would not only ...
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1answer
23 views

Unable to allow SSH access for new user

I currently have an issue, what I am trying to do is disable the root login and use ssh to login as a new user, then su to root when needed. I am unable to actually allow the user to login through ...
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1answer
29 views

log files in CentOS 7 [on hold]

In CentOS 7, how can I locate and view all the system logs that tell me who tried to enter the system, who got in, what processes they contacted, what they accomplished, etc. I want to be able to ...
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1answer
13 views

toggling between output and command prompt in CentOS terminal

When I open the terminal in CentOS linux and use su - to work as the root user, I type in commands like journalctl that result in a lot of output. The problem is, when I am done scrolling through the ...
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2answers
24 views

Does CentOS 7 incorrectly sort kernel menu entries in grub.cfg?

I've noticed an unexpected ordering of grub menu entries on a CentOS 7 system: It has following kernels installed: $ ls /boot/vmlinuz* -ltr Jun 30 14:17 /boot/vmlinuz-3.10.0-123.el7.x86_64 Nov 6 ...
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Windows 8.1 boot option is missing after installing CentOS 7, how can I get it back? [duplicate]

I recently installed CentOS 7 on a machine that has been running Windows 8.1. I did a dual boot installation and installed CentOS in a partition. But when I boot up my machine, it only gives me two ...
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2answers
28 views

httpd error: Address already in use: AH00072

I have a server, CentOs 6.5 which were installed xampp by a friend of mine. But I thought it's best to install apache, php and mysql from yum. I have it removed simply by using this #rm -rf ...
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1answer
35 views

Windows 7 boot option missing after installing CentOS 7, how can I get it back?

After installing Centos7, windows 7 is not showing at the boot time. Centos 7 is accessible. My boot folder entries: [root@localhost boot]# ls -ltr total 89176 -rw-------. 1 root root 2840084 Jun ...
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20 views

rtl8812au wireless driver installation on Centos 7

I have a fresh install of Cent OS 7 with the Gnome desktop environment. I have been trying to install rtl8812au wireless drivers found at https://github.com/gnab/rtl8812au for my Netgear A6100 WiFi ...
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2answers
16 views

moving a file to a folder with root privileges in CentOS 7

I am reading a tutorial that wants me to place a script file called script.sh into a folder called /etc/profile.d/. However, when I try to save the script.sh file in that directory, the gedit tool ...
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18 views

LAMP CentOS page/folder Outbound Inbound bandwidth monitor

I have a site, the server provide only allow 2000GB/month ($0.02/GB extra). I have monitor the bandwidth in my control panel, every day, i have about 12GB Inbound, but 100GB+ Outbound, a number very ...
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3answers
69 views

setting mysql root password in CentOS 7

How can I log into the mysql 5.6 command line client and reset the root password in Centos7? I read the following at this link, but it does not work: 1) sudo service mysqld stop 2) sudo service ...
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57 views

Disable certain keystrokes for SSH users [on hold]

I wrote a script to disable some keyboard keys while a user is logged in from a terminal, but when a user connects to server via ssh with software like putty, commands like showkeys, loadkeys doesn't ...
1
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1answer
17 views

no pwm-capable sensor modules installed on MSI B75MA-P45

I am using a MSI B75MA-P45 motherboard on Centos 6 and my CPU fan is currently stuck at 100%. I can see RPM of the fan and temperature inside my BIOS however when I run sensors-detect I only see CPU ...
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1answer
103 views

Windows boot option is missing after installing CentOS 7, how can I get it back?

I recently installed CentOS 7 on a machine that has been running Windows 7. I did a dual boot installation and installed CentOS in a partition. But when I boot up my machine, it only gives me two ...
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2answers
37 views

Running ubuntu binary on CentOS with all shared libs installed results in ld SIGSEGV

I'm trying to get a binary compiled on Ubuntu to run on CentOS 7 (both 64bit, one host, the other vm). So far I've copied the binary with all the shared libs. I no longer get the missing library ...
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1answer
27 views

linux boot stick being ignored on windows 7

I am trying to install CentOS server on a machine that also runs Windows 7. Towards this end: 1.) I created a 100GB "Unallocated" partition using the Disk Management tool in windows 7. 2.) I ...
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1answer
53 views

Editing lines in a file using a bash script?

I am creating a bash script that installed VSFTPD / FTP. After the installation some configuration is required in the "/etc/vsftpd/vsftpd.conf" file. This includes making sure the following lines are ...
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0answers
13 views

Strange behaviour of application running from NFS

I have two VMs running, one with Fedora 20 and the other with CentOS 6.6. I have a remove home directory mounted under /home1/user with autofs. /etc/auto.home1: user -fstype=nfs ...
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35 views

wget stops downloading: Cannot write to `-' (success)

Please have in mind that I don't know anything about this, nor any of its vocabulary, I am a simple web coder, trying to figure my way on the universe! I'm trying to link dropbox on my server, I am ...
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1answer
43 views

ifconfig command showing internal ip address

I'm using centOS 6.3 on virtualbox as guest OS on Win 7 host. My problem is when I use ifconfig command in terminal, I'm being thrown internal IP address(10.x.x.x). However, when I googled "my IP ...
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2answers
53 views

Enable ssh root login

I have access to a CentOS server with a user that its not root but belongs to the sudoers list. I do not have the password of root, nor I can't find out what it is (policies of the people who gave me ...
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2answers
44 views

CentOS 7 hostname will not change

I have two CentOS 7 VM's running in virtualbox. On each of the machines I want to set the hostname and a static IP address. VM1 works just fine. VM2 does not. I did the same thing on both servers so ...
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1answer
95 views

php5.6.2 installation with httpd24 ( apache version 2.4.10 ) on centos/rhel

using this repo : http://dl.iuscommunity.org/pub/ius/stable/CentOS/6/x86_64/ius-release-1.0-13.ius.centos6.noarch.rpm for php installation , and for apache i am using amazon linux repo current ...
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0answers
27 views

VPN tunnel to two services on two servers?

I've got 2 CentOS 6.5 servers, each running one service: server A: 10.140.54.1/27 running service MySQL port 3306 server B: 10.140.54.2/27 running service httpd port 443 Server B's httpd service ...
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0answers
35 views

How does ldap work on a client?

This is on CentOS I read the various openldap howto's, they mention /etc/openldap/ldap.conf and editing /etc/nsswitch.conf for example: ...
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3answers
52 views

How to list packages with files in a particular directory?

I'm switching to CentOS from another distribution, and I'm not used to working with yum. I'd like to know if there's a way to know which installed packages have files in a directory. For example I'd ...
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2answers
52 views

Can't start systemd user instance

I'm using CentOS 7, and am trying to create a systemd service for my local user. However, before I can do that, I need my systemd user instance, which I cannot find or create to begin with. Running ...
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39 views

Size on disk vs actual size: too much difference [closed]

I have a Linux machine with Ubuntu 7.10 and another with CentOS 7 that are used in the context of a Windows workgroup with Samba. Both disks are formatted ext3. On both these machines every file ...
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32 views

How do I set up a secure Samba share on CentOS 7?

I want to set up secured Samba shares so I can connect different users on the same computer to their own separate shares. I'll use a script to discover the user's credentials then run mount -t cifs ...
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1answer
37 views

Telnet session closed by foreign host

I'm trying to telnet to imap-mail.outlook.com on port 993. When I connect to it, I get Trying 157.56.195.250... Connected to imap-mail.outlook.com. Escape character is '^]'. And I can enter a ...
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14 views

How do I get debug information from rsyslog?

I followed the directions from: http://www.rsyslog.com/doc/debug.html I put the following in /etc/rsyslog.conf: $DebugLevel 2 $DebugFile /root/RSYSLOG.txt then I try: kill -USR1 `cat ...
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1answer
44 views

HTTPS won't run. (CentOS) [closed]

I've installed my SSL using the following guide as I would usually with other servers: http://wiki.centos.org/HowTos/Https However when I run httpd and try to connect using https it doesn't work. I ...
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1answer
43 views

rsyslog: how do I set up remote logging?

I am simply trying to set up a remote logging system. I think my setup is correct but it fails and I can't get any messages from rsyslog to show up in the logs, so I can't find out why. My iptables ...
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0answers
15 views

Accessing CentOS7 server from public

recently I switched to CentOS 7 OS and set up basic webserver with Apache. I had no problems configuring SSH, FTP and LAN access to the webpage. But accessing from other IP's won't work. I'm 99% sure ...
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2answers
49 views

Package installed and not installed at the same time

Sometime ago I tried to install Steam on my CentOS 5 server and tried almost everything I found on Internet and it seems that I have been able to leave libstdc++ installed and not installed at the ...
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0answers
9 views

Asus T101 Touchscreen Not Recognized

I'm running CentOS 6.6 x86 on an ASUS T101-MT which originally came with Windows 7... Is there a way to get the touchscreen to work? I couldn't find any answers for this online and everyone seems to ...
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0answers
23 views

Port randomly closing (iptables)

I'm running CentOS 6.5 on a VPS and one of the services I have running is murmur/mumble (A voip application). The issue I'm having is that the port clients connect on will be open when I initially ...
0
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1answer
46 views

CentOS 6 drbd is not available

In CentOS 6 (6.6), the drbd package is not available, neither from the extras repository. There is some information on the Net, like configure-drbd-centos-6-5, which I assume will work on CentOS ...
1
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1answer
27 views

scp a file from one server to another one, got “permission denied”

source server IP 162.244.xxx.xxx file -rwxrwxr-x 1 user1 admin 36005278 Sep 10 2013 filename.tar at destination server scp user1@162.244.XXX.XXX:home/filename.tar ./ got a Permission ...
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1answer
21 views

cannot connect mobile device to tomcat on Centos Linux

i have my web services in local and run in Tomcat and it works (in local). Now i want to connect from smartphone browser to this tomcat. For example my Pc have ip:192.168.1.140 and my ...
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0answers
32 views

centos virtual machine not registering with intranet dns server

When I am creating a Ubuntu virtual machine on virtual box it automatically registered with DNS server in my intranet network, it has both intranet IP and domain name. When creating CentOS virtual ...
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0answers
31 views

Samba 4 has high CPU usage when accessing mapped drive through Windows

I have noticed that when I access my Samba share from Windows, the smbd daemon will always use aprox 10-20% CPU - no matter if the share is used or not from Windows. Even if I close the share/window, ...
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8 views

VSFTPD Home Directory CentOS 6 [duplicate]

I’ve installed vsftpd on my CentOS 6 server and it works fine. I’ve created a user and can connect to the server and edit files in that users home directory fine. However, I am trying to be able to ...
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1answer
20 views

java upgrade problem on centos 6.5

I want to upgrade my jdk on a centos server, after some simple searches i found some solutions. From this link, you can see that the instructions are simple: jdk 7 installation guide for centos ...
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1answer
28 views

GRUB2 not detecting Windows; rootnoverify: command not found

Story: I had Windows on one partition, and an unallocated partition. I then installed CentOS 7 on the unallocated partition. (I selected the option for the installer to automatically create the ...
0
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1answer
44 views

Does all packages included in CentOS Everything ISO get installed along the base system?

The Everything ISO for CentOS is significantly bigger than the regular DVD ISO because it contains a lot more packages. Question: are these extra packages all installed automatically when I install ...
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1answer
17 views

Configuring Named DNS zones (Centos7), specifically CNAME

having trouble with some DNS configuration, I have managed to get part of the site working, however adding the prefix 'www', I'm finding a little tricky. Essentially, what I want is mysite.net -> ...
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1answer
15 views

How to install openstack havana (compute) in centos?

I am working openstack havana, so how do I install openstack havana on centOS? When i try to install it I get this error: Loading mirror speeds from cached hostfile base: centos.excellmedia.net ...
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1answer
35 views

CentOS-7 Kernel Image has a “debug” suffix after a Kickstart installation

After finishing a customized CentOS-7 kickstart installation from a CDROM, the system has booted as expected and according to the ks.cfg file. At the grub menu the options I have are: CentOS Linux, ...