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.

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3 views

CentOS 6.7 Dedicated server, -bash: fork: Cannot allocate memory 128GB Ram

I bought my new dedicated server for hosting game servers, websites and personal stuff. Also for learning and testing. I have used dedicated servers before with Linux and windows so I guess I'm pretty ...
1
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2answers
16 views

Multiple tmpfs partitions

[mayur@mayur311-pc ~]$ df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos-root 50G 3.6G 47G 8% / devtmpfs 3.9G 0 3.9G 0% /dev tmpfs ...
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1answer
8 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 ...
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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 ...
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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 ...
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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.. ...
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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 ...
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0answers
18 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 ...
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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 ...
3
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2answers
37 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 ...
-4
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1answer
45 views

how to fix this command?

Can anyone help me this problem? what right package source need to download?
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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
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1answer
25 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 ...
0
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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 ...
0
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1answer
31 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.
2
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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 ...
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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 ...
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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 ...
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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 ...
-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 ...
-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 ...
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
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
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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 ...
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 ...
0
votes
1answer
32 views

Centos 7 not loading latest kernel at boot

By default, centos 7 comes with kernel version 3.10.x. After installation of centos 7, I have upgraded kernel to 4.6.x that is latest stable version. My system is remote. First, it is very expensive ...
1
vote
1answer
34 views

renaming files in a folder

In one directory I have many files which look like this: Galaxy100-[0025-CL3.single.bed].bed and I would like to change it to: 0025-CL3.single.bed I tried this rename 's/Galaxy[0-9] - \[//' *, ...
1
vote
1answer
36 views

Shell Font Over SSH

I have a Linux machine (CentOS 7) in which I frequently SSH into from multiple devices. I have installed ZSH and Oh-my-zsh on the remote machine. I would like to install the following theme: ...
1
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0answers
21 views

Centos 6.6 box with single wordpress site - out of memory: kill process httpd repeatedly

So I have a Centos 6.6 box running as a LAMP stack. PHP 5.3.3 | Apache 2.2.15 | MySQL Server 5.1.73 This box is a VM running on XenServer 6.5, It has 4Gb memory available. total ...
0
votes
1answer
22 views

CMake not found, yet it is installed [closed]

I am attempting to install CMake in a cluster environment running Centos 7.2, by executing: ./bootstrap --prefix=/home/user/opt make make install Compiling doesn't give any errors, yet, ...
1
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0answers
4 views

Are default zones not pre-populated following a fresh install in firewalld?

CentOS 7 / Minimal Install I want to get my feet wet with firewalld and am coming across some beginner issues. I installed it via yum install firewalld I enabled it via systemctl enable ...
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0answers
6 views

Firewalld forwarding between zones not working

I have a centos 7 kvm hypervisor running multiple VMs that are configured to use NAT networking. These VMs run their services, of which ssh is the most important for administration purposes. I would ...
0
votes
1answer
18 views

How does this work in firewalld? iptables accept all [closed]

On Ubuntu with plain iptables, filter table, INPUT chain: Chain INPUT (policy ACCEPT) num target prot opt source destination 1 ACCEPT all -- anywhere anywhere ctstate ...
0
votes
1answer
14 views

Where does a Centos7 VM get the IP address for the local host name from?

On my centos7 VM, hostname says bmargulies-centos7, domainname says (none), dig bmargulies-centos7 says what's below, and ping of that hostname hangs. Where does the IP address 92.242.140.21 come ...
1
vote
1answer
20 views

Difference between users listed under home directory and those not

I see some of the users I can find under /home directory in centos but not rest of the users. Users that are listed under /home directory, I can login as those users with command su username To ...
3
votes
1answer
32 views

Running Unison with incrond (inotify cron daemon)

We'd like to use unison to sync two servers. From the command line and in bash files the following command works fine: unison -batch /var/www/html/test ssh://host-2//var/www/html/test Files are ...
0
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0answers
15 views

gnome desktop is making automatic annoying pronunciation sounds?

for example when i put my mouse pointer to applications.It says "windows applications label" when i go to network mangager -> wifi it spells the words on each and every setting where my mouse goes. ...
2
votes
1answer
14 views

Eclipse doesn't stay “Always on Visible Workspace”

I usually hop between a few workspaces, but like having a couple of frequently used applications "Always on Visible Workspace". However, when I tell Eclipse to do that it slips into "Only on This ...
0
votes
0answers
16 views

cannot stat '/mnt/cdrom/dcp.repo':no such file or directory

This error was occurred during the installation on my centos minimal iso in oracle virtualbox and vmware workstation 12; both face this error. After some time it will automatically install but it ...
0
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0answers
13 views

MEGAsync on Centos 6.5

I am trying to build MEGAsync client from the source package on Centos 6.5, but the process fails and it prints the following error message: Project MESSAGE: Installing desktop files. uic: Error in ...
0
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0answers
24 views

How to downgrade Centos 7.2 to 6.x

I just got a dedicated server and installed centos 7 but I didnt have any other os in the panel list than now I need to install centos admin panel but its not supported for centos7 is there any way to ...
0
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0answers
26 views

CentOS “mount.nfs: access denied” to Ubuntu NFS server

I have a NFS server on Ubuntu 14.04.4 and NFS client on CentOS 7; can this work? I keep getting a "mount.nfs: access denied by server while mounting" error. I've tried turning off the firewall on the ...
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
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1answer
22 views

CentOS Kickstart Packages

I'm trying to install CentOS7 using a kickstart file which I've written. Below is a snippet from the kickstart ################################## ##### 3. Package installation ...
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1answer
21 views

Updating glibc to 2.21 on CentOS

I'm not very experienced with Linux, so please bear with me. I need to install MySQL 5.6 on a CentOS box. I found what seemed to be a simple tutorial, but the first command (sudo yum install ...
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0answers
43 views

“The service “ftpd” appears to be down.”- How to solve this? [closed]

For some reason the service pureftpd goes down and the email alert I receive indicates: Reason: Unable to connect to port 21 on 127.0.0.1: Connection refused: Died Looking at /var/log/messages ...
0
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0answers
25 views

Launching JNLP file from Linux

There is a .jnlp file which can be launched from Windows. I now want to open it from Linux. The command is javaws file.jnlp. However, I get a segmentation fault and the verbose message is not ...
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 - ...
0
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0answers
8 views

Mic input ignored in Win7 HVD running from Ubuntu 15, 16, but not 14

The actual symptom I'm seeing is on Windows 7, but I think the root cause is in Ubuntu. I have a CentOS7.2 laptop, which I run an Ubuntu VM from, and from that VM I run VMWare Horizon View to run a ...
0
votes
1answer
29 views

Having problems updating after esx host problem

So I have a VM that had to be hard shutdown. I can't get the error to stop. CentOS 7.x latest [user@asm-dmz01 ~]$ sudo yum-complete-transaction --cleanup-only Loaded plugins: fastestmirror Loading ...