Questions specific to the CentOS Linux distribution. Use this tag if your question relates to how the CentOS distribution affects your problem; do not use it if you just happen to be using CentOS and your question is about a specific configuration detail or syntax.

learn more… | top users | synonyms (2)

0
votes
1answer
7 views

How to fix install openvpn on CentOS 7?

All image about my problem is here Why I can't install openvpn with yum even I try to fix it like this website said . What is wrong in here? Help me, please people. By the way, the problem I see,is ...
0
votes
1answer
841 views

How to update squid proxy 3.5 in Centos 6?

I am using Centos 6.6 with 32 bit OS. Now I want to update squid proxy from 3.1 to 3.5. Is it possible to update in centos 6.6? If it is possible, please tell me how to update it.
1
vote
1answer
2k views

CentOS custom ISO installation - /dev/root does not exist

I am building a custom ISO for CentOS 7 and for now I am just intending for this to be an absolute minimal install (a proof of concept basically). I am re-creating the ISO via using mkisofs. The ...
8
votes
3answers
18k views

What does eno mean in network interface name 'eno16777736' for CentOS 7 or RHEL 7?

Under consistent network device naming scheme, what does 'eno' stand for in network interface name 'eno16777736' for CentOS 7 or RHEL 7?
1
vote
0answers
9 views

Centos Samba share folder not accessible from Windows

Recently I changed my File server from Ubuntu to Centos7. Then I found the samba configuration which used to work on Ubuntu no longer works on Centos. When the user access the share folder from ...
0
votes
1answer
2k 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 ...
0
votes
0answers
18 views

how to fix centOS after set up problem? [duplicate]

Why after set up CentOS 7 (I choice GNOME desktop install), reboot and It happen like this.(this picture). I choice c ; r ; 1, it still don't work, believe me. I snapshot again for everybody can see ...
0
votes
1answer
2k views

Getting Minor Version Mismatch Error with Php and Mysql

I randomly started getting this error when trying to instantiate a new mysqli instance in php script: mysqli::mysqli(): Headers and client library minor version mismatch. Headers:50541 ...
4
votes
1answer
3k views

Centos 7/Gnome Applications menu items don't respond

I have CentOS 7 installed with gnome. After some uptime, no items under the 'Applications' menu respond.* I can open the menus and submenus and hover over items with the mouse pointer. They will ...
-1
votes
0answers
12 views

creating directories in a directory using loop [duplicate]

On my CentOS machine, I need to create a main directory inside which I will have a few sub directories and, inside them, some subsubdirectories. Something like: main_directory->sub1,sub2,sb3.. ...
1
vote
2answers
838 views

Need to install VirtualBox Guest Additions 4.3.8 in CentOS 6.3

My host system is OSX 10.9.2 and I'm running VirtualBox 4.3.8. In a Hadoop class I took recently, we were provided with a VM disk image preloaded with CentOS 6.3 and a lot of Hadoop-related ...
1
vote
2answers
2k views

Installing MySQL on CentOS throws error that cannot find mysqld.sock

I have yum install mysql in CentOS 6.4. Now, when I use mysql command, it throws the following error: ERROR 2002 (HY000): Can't connect to local MySQL server through socket ...
3
votes
2answers
34 views

Extract files with cpio where one or more paths may contain spaces

We have a cpio archive that was created by generating a file that contains a list of absolute paths to be included in the archive. (one absolute path per line of a plain text file) The command to ...
0
votes
1answer
8k views

How can I see settings of the email server?

I have root access to a Linux server (CentOS 5.10). I want to see the email server's settings such as whether SMPT is working, wheter there is an email server, port number, does it require SSL, what ...
3
votes
1answer
51 views

How to detect / prevent systemd network startup failures

Using Centos 7 (most recent updates), on a remote firewall machine that is 200 miles away, I have occasional difficulty on reboot with the network stack not properly starting up. The box has 3 ...
0
votes
1answer
151 views

TLSv1.2 support in CentOS 5.8

Right now I can't access HTTPS site from PhantomJS headless WebKit browser because of TLSv1.2 In my CentOS 5.8 I have following OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 verison installed. I think I ...
0
votes
1answer
24 views

how to fix install gnome desktop in CentOS 7?

I do like tutorial : How to install Desktop Environments on CentOS 7?, but I meet a trouble,see in this picture. How can I fix this for "startx" successed. in all install command line, i just see ...
1
vote
3answers
4k 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 ...
-3
votes
0answers
18 views

how to fix error python-pyparsing when install GNOME desktop in centos 7?

in first picture you see, I just type "# yum -y groups install "GNOME Desktop" and i meet the problem, that error, python-pyparsing, you see. How can I fix this problem? I try to do this, don't ...
0
votes
0answers
11 views

how to fix install python-pyparsing-1.5.6-2.el6.rf.noarch.rpm?

i want to install python-pyparsing-1.5.6-2.el6.rf.noarch.rpm on my CentOS 7 but the error is in tthat picture. it say i need python 2.6 and I already installed python 2.6. But when I fix it again, it ...
0
votes
0answers
16 views

CentOS Multilib problem with libgcc

My friend's computer running CentOS 5.6, trying to install hhvm, but it got an error: $ yum install hhvm Failed to set locale, defaulting to C Loaded plugins: fastestmirror Setting up Install Process ...
1
vote
1answer
777 views

Installing Octave Dependencies on CentOS 6 using yum

I am trying to install Octave 4.0.0 (from source) locally in my home directory on a CentOS 6 cluster. This is a rather extensive install (see list of dependencies). I have several issues : From ...
-4
votes
1answer
45 views

how to fix this command?

Can anyone help me this problem? what right package source need to download?
0
votes
1answer
157 views

text colors in CentOS 6.5

I've got an inventory/ordering program that runs on cobol on CentOS. The program is pretty much all text-based and looks like an old DOS program. I did a reinstall of the server, updating from ...
0
votes
1answer
26 views

Install PostgreSQL 9.5 CentOS 7

I'm trying to install PostgreSQL 9.5 on CentOS 7. I've searched online and to get access to the 9.5 RPMs it requires installation of pgdg95 via the following command: sudo rpm -ivh ...
0
votes
0answers
28 views

Files not appearing immediately on remote system after SFTP put command

I'm encountering a bizarre issue. I'm sending files to a remote machine using SFTP's put command. However, even though my machine says the transfer is finished, the files don't appear immediately in ...
0
votes
1answer
16 views

CentOS: How to force pip to install Django with latest Python 3.5

I'm running CentOS, and it has pre-installed Python 2.6.6. But I want to use Python 3.5, the latest version. So I have installed Python 3.5 on my server. It's working properly. I just compile Python ...
1
vote
1answer
1k views

how to make LVMs at available boot? kernel panic - dracut cannot find logical volumes after kernel upgrade in CentOS 6.6

I have a centoOS 6.6 vmware vm that I ran yum update on which upgraded the kernel after reboot, I started getting this: dracut Warning: No root device "block:/dev/vg_myhost/lv_root" found dracut ...
0
votes
1answer
2k 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 ...
0
votes
2answers
999 views

How find and install PHP 5.3.10 or later on CentOS 6.5?

When I check yum list php it only shows 5.3.3 which is older than 5.3.10. How do I get and install the newer PHP? (Using CentOS 6.5)
-1
votes
0answers
8 views

ldap_add: Invalid syntax (21) - additional info: objectClass: value #0 invalid per syntax - Error when i try to add an user [on hold]

I have been looking into the same issue and everything I find is saying about the slapd.conf that I found out it is deprecated I am trying to create a user as well and I got the same error. My ...
0
votes
1answer
3k views

No IP address on VMware running centos 7

I just now installed Cent OS 7 on my VMware 8 and I am not able to connect it to a network. I checked the VM network and its mapped to the physical NIC. The same setting work like charm on my CentOS ...
0
votes
1answer
30 views

'yum' is not recognized as an internal or external command, operable program or batch file [on hold]

I installed CentOS 7 minimal on VirtualBox; when I type: yum install net-tools I get this error: 'yum' is not recognized as an internal or external command, operable program or batch file.
1
vote
1answer
21 views

timeout in locking authority file (vnc service)

There are some pages about timeout in locking authority file /root/.xauth but I really don't understand what is the root of the problem. As I start vnc service, I see: root@cluster:mahmood# ...
1
vote
2answers
831 views

Failed to join domain: failed to set machine kerberos encryption types: Insufficient access

did someone have this error when try to join CentOS 7 to Active Directory. I tried on a various ways(via cli, gui, tui) and always get same error. Failed to join domain: failed to set machine ...
2
votes
0answers
19 views

rpcbind/nfs fails, failed to create RPC listeners, exiting

My system crashed while a script was running that deploys a pxe boot system (software is called DRBL). Now I can't get rpcbind, nfs, or ypbind to start properly. I'm chasing a series of errors which ...
1
vote
1answer
1k views

CentOS with AutoSSH, Port Forwarding Clarification

I'm using autossh and set it up like shown in the following example: http://surniaulula.com/2012/12/10/autossh-startup-script-for-multiple-tunnels/ I found it works really well, but need some ...
-4
votes
0answers
20 views

how to fix this command in CentOS? [on hold]

[root@localhost ~]# yum install lzo Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.xxxxxx.com * extras: centos.xxxx.com * updates: centos.xxxx.com Package ...
0
votes
0answers
11 views

Where to get l2tp plugin for Network Manager in Centos 7

I need to connect to the l2tp VPN of my company, but I cannot find the package NetworkManager-l2tp in repositories. I used to use it in Fedora, but I cannot find it in the repositories of Centos 7. I ...
-2
votes
1answer
27 views

How to view an specified user's pemissions in linux? [on hold]

can anyone please suggest me how to find out the permissions of a specified user in linux? I'm getting the information regarding the files/groups etc. But I need specific users permissions ...
0
votes
1answer
640 views

OpenLDAP: Invalid syntax error when trying to add LDIF

I keep getting an invalid syntax error when trying to create a user in OpenLDAP (CentOS 7). This is a new install of OpenLDAP for testing purposes. So far I've managed to create a group called "Lab ...
1
vote
2answers
30 views

systemctl .service file not working as expected

I am working with the service files in Centos 7 and am creating one for xymon. The issue I am running into is I am trying to configure start, stop, and restart. I went as far as using an existing ...
1
vote
1answer
36 views

Custom kickstart install completes but machine won't boot

I have been following the instructions on using kickstart to create a custom install at : http://www.smorgasbork.com/2012/01/04/building-a-custom-centos-7-kickstart-disc-part-3/ I got an unattended ...
1
vote
1answer
767 views

centos: ping6 unknown host

I have centos 6.5 with ipv6 enabled and working (partially). When I'm trying to execute "ping6 bin6.it" it returns error "unknown host": [root@centos ~]# ping6 bin6.it unknown host Host is ...
-3
votes
1answer
34 views

How ssh into CentOS virtualbox? [on hold]

I use window 10. And I have already installed CentOS on virtualbox, on window 10. I want to login into ssh from my window to that CentOS virtualbox machine. Can you tell me a tutorial to doing this? I ...
2
votes
1answer
967 views

Corosync & Pacemaker IPTables Rules

When using Corosync with two rings via multi-cast addresses 226.94.1.1 (Port 5405) & 226.94.1.2 (Port 5406) what iptables rules are required to allow two nodes to communicate optimally without ...
0
votes
1answer
9k views

How can I extend VMware Partition on Centos 7 using GParted?

I've a problem with increasing a partition from 20GB to 120GB, VMDK file. Here is what I've done: using vmware-diskmanager to increase vmdk file from 20 GB - 120 GB. It's ok. download and boot from ...
1
vote
1answer
63 views

What to do if the owner of /usr/bin/* changes to a non-root?

It would be the right thing to say that I messed up! Accidentally, I changed the owner of all files in /usr/bin to 'dev' from 'root'. Now, sudo does not work! If I use sudo with any command, I get - ...
1
vote
6answers
826 views

I can not install MySQL using yum on Centos7

I've installed centos7 recently, but, when I am trying to install MySQL using the command: yum install mysql-community-server I keep getting Exiting on user cancel while I am not hitting any ...
1
vote
0answers
32 views

Why is my udev mounted device not staying put?

I have a computer running CentOS 7. I'm trying to set up a udev rule to automatically mount a USB drive (named 'sdb1') to /mnt/flash whenever it is connected. The udev script was not working (see ...