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Questions tagged [centos]

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.

1
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0answers
17 views

Starting wpa_supplicant via script in systemd not working properly

I've written a script to manually start the wpa_supplicant function on a Fedora/Centos7 machine with a wireless NIC. Due to static routing issues, I cannot use NetworkManager (nor do I want do with ...
1
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0answers
8 views

setroubleshootd showing ~100% CPU utilization

One of my centos7 machines shows setroubleshootd running at between 70-100% CPU utilization. I tried to temporarily disable SELinux with setenforce 0, just so I could use sealert to read the audit....
0
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1answer
11 views

Trying to setup port redirection through 2nd gateway

I am trying to setup configuration where all connections to port 161 will go through another gateway (through openvpn) while others are going directly [localhost] -> [gateway] -> [remote] - OK [...
0
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0answers
17 views

Getting number of failed login attempts since last successfull

How can I reproduce this message, when we make an SSH connection: Last failed login: Sun Feb 19 03:52:25 There were 41 failed login attempts since the last successful login. I want to configure a ...
1
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0answers
25 views

su - <username> hangs if I added a line in /etc/bashrc

I added this line to /etc/bashrc file export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/glibc-2.14/lib I log in as root throw SSH normally, but if I wanted to change my user by su - myusername the ...
0
votes
1answer
13 views

Copying files from Bootable USB to local Drive in %post script of kickstart

I have created bootable USB with custom folder in it, After installation i want to copy files from USB to local directory, Following is kickstart file %post section %post --nochroot --erroronfail --...
-1
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0answers
15 views

Monitoring data flow to /dev/null for a given process

I have a process which reads out data from a custom PCI-e device using a custom driver. The program takes a file descriptor as an argument and writes the raw data to it. I would like to test the data ...
0
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0answers
14 views

CentOS doesn't go to login screen after kernel update from 3.10 to 5.06 on my HP ML150 server

Installed CentOS 7.6 on my HP Proliant ML150 Gen9 server which came with kernel version 3.10. Immediately upgrading kernel to latest mainline version 5.0.6 caused the problem which is being not able ...
0
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0answers
36 views

CentOS 7 : LAN connection works, but no Internet

Given the CentOS server-like machine: $ uname -a Linux labsm 3.10.0-693.21.1.el7.x86_64 #1 SMP Wed Mar 7 19:03:37 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux On the motherboard with 3 LAN ports (as I ...
1
vote
1answer
40 views

Unable to find (and uninstall) installed version of CUDA

I am trying to install CUDA version 10.0, but it is telling me a newer version is already installed. I am not able to find the newer version, so I can't run the uninstaller. I am on CentOS 7. Here's ...
0
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2answers
52 views

CentOS network interfaces are not coming up

We installed a fresh copy of CentOS on "HP Proliant DL380p Gen8" and the ethernet interfaces are having this Strange, fluctuating connectivity issue where the interfaces either work with no issues and ...
0
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0answers
12 views

Mysql failed because a configured resource limit was exceede CentOS 7

Mysql is down on my vps server and i tried to restart, stop then start, but nothing works. The error i am seeing every time is this [root@vps ~]# service mysqld restart Redirecting to /bin/...
0
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1answer
19 views

whitelist IP Addresses centos 6.10

How to allow specific IP Addresses to a dport in iptables ? for example : i have 2 clients, first client's IP Address is 182.3.3.1 and the second ones is 202.4.5.6, and i have a port let's say 2222. ...
0
votes
1answer
20 views

Transaction check error during CUDA installation on CentOS 7

I am trying to install CUDA on a Linux CentOS 7 x86_64 AWS instance via the installation guide and running into an error that I cannot resolve. Here are the steps I took: I verified that I had gcc ...
0
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0answers
23 views

Netconsole kernel module fails to load at boot time from the kernel command line

I'm using RHEL 8 beta I follow the instructions on netconsole module I put netconsole=+5555@10.0.0.1/eth0,5555@10.0.0.2/ to the kernel command line. On ubuntu 18.04 it works but on RHEL or CentOS ...
0
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0answers
21 views

localhost kernel: appex: not cloning BAD SKB: head=xxx

My CentOS 7.6.1810(Core) always restart automatically. in the /var/log/messages there are many logs: localhost kernel: appex: not cloning BAD SKB: head=fff....
-1
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1answer
33 views

Not able to switch to root user via command line [duplicate]

On my centos 7 vps server, to secure my server I disabled root login via ssh. I created a new user called erdem and login with that user via ssh. After I login via ssh with user erdem, I would like to ...
0
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2answers
57 views

Is it possible to “add” a second folder to the current folder file contents? symlink?

question: Is it possible to "add" the contents of a 2nd folder to the current folder file contents? (In essence I was asking from a full Unix is perspective but may be nginx would work too as the goal ...
0
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0answers
7 views

Proxy Connection Problem on CentOS [on hold]

I'm using CentOS 7 on digitalocean droplet. I'm trying to connect my proxy but it return 502 Bad Gateway. My firewall permit all outbound tcp&udp ports. I can use same proxy on another Ubuntu ...
0
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1answer
42 views

not an rpm package (or package manifest) [on hold]

I am trying to install CUDA on a CentOS server but I cannot get it to work. I got the file from NVIDIA like so: curl -O http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1604/x86_64/cuda-...
0
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1answer
13 views

Not able to hibernate or suspend centos system

I am running Centos 7 and all I want to do is make my computer go to sleep immediately. There is a setting I have set to make my computer go to sleep but only after a certain amount of inactivity but ...
0
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1answer
42 views

Website cannot write to files or create directories

I've been trying to install TeemIP for about 6+ months now and I've never been able to figure out this issue on Centos7. The error I get is the following: The directory '/var/www/teemip/public_html/...
0
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0answers
19 views

Is there an yum repository that contains vim with python 3 support?

I am using CentOS 7 and trying to install vim 8 without having to build it from source. Using ubuntu, the latest vim installed using apt comes with python 3 support. Is there such a repository for ...
1
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0answers
19 views

How to get maximum performance on HP Proliant server running CentOS 7?

I'm trying to get constant maximum performance on my HP Proliant server running CentOS 7. Current configuration of using intel_pstate driver which varies clock speed between 1.2GHz - 2.4GHz isn't ...
0
votes
2answers
13 views

Installing Composer on CentOS with multiple PHP versions

I have multiple versions of PHP (5.6 and 7.2) installed on my CentOS 7 server. Googling CentOS 7 Composer installation seems to have the same guide, just under a different blog with these steps: $ ...
0
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0answers
38 views

netstat command for popular IP addresses OK in CentOS 6, fails in CentOS 7

In CentOS 6 w/ OpenVZ 2.6.32, this command outputs IPs with the highest number of connections against port 22, e.g: [root@legovz ~]# netstat -antu | grep :22 | grep -v LISTEN | awk '{print $5}' | cut ...
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0answers
18 views

Installing Xcompmgr without sudo, admin, or root acess

So basically I need to install and run this thing called Xcompmgr (https://wiki.archlinux.org/index.php/xcompmgr) for my program. However as stated in the title I don't have access to certain commands ...
2
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0answers
17 views

Is nfs4_setfacl supposed to be applied from the client machine or server?

I'm really confused on NFSv4, specifically, I don't understand how to set the permissions. When I attempt to use the command nfs4_setfacl I get error message Operation to request attribute not ...
0
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0answers
18 views

PulseAudio C++ API: How to play .wav file and control volume

I am trying to play .wav files using the Pulse Audio c++ API while also being able to control the volume of each sound. I have successfully played these files with ALSA, but could not figure out ...
0
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0answers
35 views

Cron job can't write to /tmp directory [closed]

I have cronjobs for a specific user. When these applications run as cron jobs they cannot write to the /tmp directory. When I run them manually they are able to write to the tmp directory. This is on ...
0
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0answers
14 views

How do we enable quick launcher and Min,max button in MATE (CentOS)?

I have installed MATE desktop environment in my CentOS . But there is no quick launcher 'applications' button and also my VS code installation doesn't have min,max,close buttons. I have used below ...
0
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0answers
27 views

32 bit CentOS bootable USB drive is not detected in UEFI mode

I am trying to install CentOS on my intel compute stick which has 32 bit architecture using Intel Atom Processor. (Intel compute stick CS125 with 32 Bit Atom processor) The link to kernel is here: ...
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0answers
7 views

policy-map apply using traffic control

In Cisco i can found this object-group network XYZ 10.10.10.0 255.255.255.192 object-group network ABC 10.10.11.0 255.255.255.192 class-map match-any C-XYZ match access-group name XYZ class-map ...
0
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1answer
35 views

Are there anywhere I can find 7.5 versions of CentOS for download?

I am going to upgrade a e107 server locally in VMware before doing it for the real server. This will enable me to verify that all will work well when I upgrade. As I will not be able to affect the ...
0
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0answers
16 views

How to resolve Transaction check error while installing xrdp?

I am using CentOS Linux release 7.3.1611 (core). I install XFCE gnome and trying to install xrdp so that i can connect via windows machine. yum -y install xrdp xorg-x11-xinit But i am getting below ...
0
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0answers
19 views

How can i reduce the size of CentOS OS for it to still work? [duplicate]

So I have a clean installation of CentOS 7 on a virtual machine. The thing is I need to shrink the size of the thing to the lowest and still be able to have javascript supporting browser and a PDF ...
0
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0answers
5 views

Munin after update to 2.0.44 not drawing zoom graphs and showing localhost twice

I recently update Munin version on centos7 and zoom graphs not working anymore correctly. And i noticed in web console in section GROUPS that there is localhost link twice.I tried numerous workaround ...
0
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0answers
31 views

Is there any method to install packages in centos without using sudo or yum command?

Am looking for a method through which I can download and install packages without a sudo. What I really would like to know is the method which permits me to install packages without super user ...
1
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0answers
36 views

install job on crontab

I definitely sure that the syntax I am using in the crontab file is correct because I installed the same job on another host and it is working fine. The syntax is: 05 10 * * mon,wed,fri /app/aban/...
0
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0answers
23 views

Why the ssh port tcp connection have more than 10000 Send-Q?

I use netstat -an, find my ssh tcp the Send-Q is very high(15336), [root@server146 ~]# netstat -an Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address ...
0
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1answer
30 views

How can `wget` get more logs when it gets error

I have several questions about wget tool in linux: # wget http://www.jdfschool.com --2019-04-05 02:33:44-- (Trys: 3) http://www.jdfschool.com/ Connecting www.jdfschool.com|115.28.223.13|:80... ...
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0answers
41 views

Adding symbolic link commands [duplicate]

In a class for beginning linux I was asked to make a symbolic link to the clear command and then add it to the .bash_profile so it can be used. I made a symbolic link of ln -s /usr/bin/clear cls in ...
0
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0answers
14 views

Bluetooth tethering not working on CentOS7

I am trying to share my internet connection from my PC to my smartphone via Bluetooth. I paired my smartphone with my PC. After this a new option comes in the drop-down menu on the upper rightmost ...
0
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0answers
1k views

Wordpress site hosted on Digital Ocean - 100% CPU usage

TL;DR - when there's traffic (around 900) our sites' CPU reaches 100%, slow down and crush. INTRODUCTION Our company holds more than 40 content websites, hosted on Digital Ocean, using Wordpress CMS....
3
votes
1answer
63 views

Unable to update glibc to the latest version

We use Katello/Satellite 6 to manage our repos/pkgs and subscribe our servers to it. In the Katello Web UI it says that glibc-2.12-1.212.el6.x86_64 and glibc-common-2.12-1.212.el6.x86_64 is an ...
0
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1answer
56 views

GitLab with relative URL on Apache (CentOS web server)

I have a CentOS 7 server with an existing website (say mywebsite.com) hosted with Apache. I would like GitLab to be managed by Apache and not nginx, and with a realtive url with respect to the one of ...
3
votes
1answer
70 views

Time zone: Host. What does that mean?

I know that there is several ways to setup system timezone on CentOS host. What I would like to know is the meaning of this Host timezone which seems to be set by default and is reported by ...
2
votes
1answer
38 views

Why do I get different cpu flags in /proc/cpuinfo between CentOS 6 and CentOS 7?

CentOS 6.9 showed the following CPU flags in /proc/cpuinfo: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx pdpe1gb rdtscp lm ...
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0answers
44 views

FTP Connection Refused after passive mode

when using ftp via commandline I can connect and authenticate but when I issue commands I receive the message connection refused. I am able to connect to this FTP server from other servers and locally ...
0
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0answers
23 views

Add all users in AD-Group to the local wheel group

We have limited 'su' to users that are in the wheel group and are now looking to permit certain users that are in a particular AD-Group. The users that we want to permit to use the program 'su' are ...