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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0
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1answer
61 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
votes
1answer
53 views

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

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
votes
0answers
173 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 ...
0
votes
1answer
66 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 ...
1
vote
1answer
42 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# /etc/...
1
vote
2answers
77 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 ...
4
votes
1answer
118 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
75 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
173 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
39 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
59 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: https://...
1
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0answers
57 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
122 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
vote
0answers
6 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 firewalld....
1
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0answers
28 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

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 from?...
1
vote
1answer
27 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
70 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 ...
1
vote
0answers
16 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. ...
3
votes
1answer
25 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
20 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 won'...
0
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0answers
24 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
votes
0answers
117 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
votes
0answers
41 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
84 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 http://yum....
0
votes
1answer
66 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 ######################...
0
votes
1answer
31 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 my-sql-...
0
votes
0answers
70 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
73 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
votes
0answers
11 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
63 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 ...
1
vote
0answers
28 views

cups restarted automatically

I have installed a cups service on a CentOS 7.1 64 bits. We have some problems with a printer and the only thing I can see on logs is /var/log/messages: May 18 12:11:37 isis systemd: Started CUPS ...
2
votes
0answers
54 views

CentOS 7: RAID 1 high I/O wait

I am running CentOS 7, with RAID 1 (md) on the hard drives. I have the partitions set as shown below. md0 -> root (sda1, sdb1) md2 -> swap (sda2, sdb2) md3 -> misc (sda3, sdb3) on md3, I ...
0
votes
2answers
342 views

CentOS: Install git with yum says glibc requires glibc-common older than installed

I'm using CentOS 6 from Docker, and when I install git, I get this dependency error: Error: Package: glibc-2.12-1.166.el6_7.7.i686 (updates) Requires: glibc-common = 2.12-1.166.el6_7.7 ...
0
votes
1answer
45 views

Set an IP in Centos for access in SSH when connected through WiFi

I recently installed CentOS 7 on Virtual Box with a minimal installation, and I have enabled the network interface in order to show my IP and access to it through SSH when connected by an Ethernet ...
0
votes
1answer
56 views

sshd AllowGroups group not granting access

I have this weird situation: On a Centos 6.6 box, in my sshd_config, I have the line AllowGroups foo bar baz just like on all the other servers. However, when user baz (whose group is baz) tries to ...
0
votes
1answer
22 views

How to know about automatic installations in CentOS

I have a Centos release 6.7 server where I have installed Apache 2.4. The server came with Apache 2.2 but I have upgraded it to Apache 2.4. From time to time, the system goes back to use Apache 2.2 ...
1
vote
1answer
49 views

Strange lines in /var/log/message folder of Centos machine

Below are lines from my /var/log/messages. Can someone help me to understand what these lines mean? I am running a syslog server on this machine. I want to know if these messages would stop the ...
0
votes
0answers
13 views

window remains invisible on startup (Gnome 3 Centos7)

I have created a Vagrant box that is specific for our teams needs. I am running into an issue with a hidden window on the SOAPUI application and cannot resolve it after many hours of Google searching ...
1
vote
0answers
19 views

Using mail spool file for an entry in /etc/aliases gives errors in EL7

For years (with EL6 and before), I have successfully used entries like this in my /etc/aliases file: bugs: /var/spool/mail/bugs The idea being mail to a non-user can be shoved into a file for ...
1
vote
0answers
12 views

Centos 6 FTP problem

I have a VPS running CentOS 6. I've tried multiple FTP servers but the following problem keeps me stuck. I want all users to have FTP access to their own folder in /home, so I configured Pure-FTPd to ...
2
votes
0answers
117 views

Systemd mount fails. Where= setting doesn't match unit name [closed]

If I use this command : mount -t xfs -o noatime,nodiratime,logbufs=8 -L d1 /srv/node/d1 all works correctly. But if I try to mount throug the systemd mount it fails. I've created a file /etc/systemd/...
0
votes
1answer
54 views

Sensu remediation : not able to trigger client

I am a newbee to Sensu remediation i tried to restart process with custom script Senario: if my http link goes down then i use to manually run the script and start it. we moved to Sensu recently as ...
1
vote
1answer
75 views

File location for Syslogs in Centos machine

I am running syslog server (rsyslog 8) on my centos machine. I want to map other device in my network to send the logs to this syslog server. If mapping is done correctly where exactly the syslogs ...
2
votes
2answers
174 views

How to use Upstart scripts on CentOS7?

I am learning some stuff about object storages and have an example: I need to create a file /etc/init/start_swift.conf with following commands: description "mount swift drives" start on runlevel [234]...
1
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0answers
20 views

Extending XFS filesystem CentOS 7 Google Cloud

I have Googled everything, and literally nothing is working. Here is df -h: Filesystem Size Used Avail Use% Mounted on /dev/sda1 10G 7.7G 2.4G 77% / devtmpfs 103G 0 103G ...
0
votes
0answers
22 views

NetBeans 8.1 installer stuck on 64-bit RHEL 7

This is CentOS 7 running in Docker. Silent install doesn't show anything in /tmp/state.xml. When I remove silent install and enable X11 for the installer Window, I can see that the installer is stuck ...
1
vote
1answer
31 views

Wireless Kernel Module Not Loaded

I did a CentOS 7 x86_64 minimal install on my computer with an AMD x64 processor. I am now attempting to set up WIFI. The wireless driver iwl4965 from here is installed but is not showing as being ...
3
votes
2answers
92 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
0answers
21 views

zopfli --i1000 all css, js files in a directory and sub directorys

My servers OS is CentOS, with Nginx. I've enabled Gzip_Static_Module for nginx. Now after update of a website I need to gzip all the js, css files. Is there a way to search a dir like /home/user/...