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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.

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13 views

Differentiated chart of Red Hat and Debian package names [duplicate]

I'm not sure why package maintainer would choose a different name for each distribution for their application. Our life would be much better if we have the flexibility to use the same package name ...
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0answers
5 views

OCSERV installation

I am trying to install ocserv vpn on a centos6 OS. After all installation method and configurations, I faced bellow error when attempt to run it: > [root@server ocserv]# service ocserv start >...
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8 views

Install udunits2-devel from source CentOS 7?

I'm getting the following error when trying to install the sf package in R (R/3.4.2/gcc7.2.0) on CentOS 7. install.packages('sf') ---------------------------------------------------------------------...
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2answers
25 views

Bind mounted /var to /raid5/var and CentOS fails to boot

System Background: I am running CentOS 7 in a VM (in VirtualBox) on a host computer running Windows 10. My /dev/sda is on an SSD and then I have three 1TB HDDs /dev/sdb, /dev/sdc, and /dev/sdd ...
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1answer
12 views

v option in /usr/lib/tmpfiles.d/tmp.conf

While checking the file /tmp.conf i found option v as v /tmp 1777 root root 10d after while read the manual offline and online in but i didn't find any thing related, is their any manuals related ?
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1answer
12 views

Trying to resolve dependency on libz.so.1(ZLIB_1.2.9)

A friend built an EPUB converter for me that depends on lib64png16_16. lib64png16_16 has a dependency on libz.so.1(ZLIB_1.2.9)(64bit). I pulled down and compiled ZLIB_1.2.11, but it's not being ...
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19 views

How can I make a router using CentOS 7

Route a print server I am asking this community for some advice on routing using a CentOS 7 server. This situation is as follows: I have an external print server (let’s say it’s on subnet 10.0.0.0/...
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0answers
32 views

CentOS 7, VirtualBox, openmpi installation breaking GUI. Why?

I have a case where my installation of CentOS 7, hosted by a Windows 7 machine through an Oracle VM VirtualBox, is having its GUI installation crippled* by: yum install openmpi openmpi-devel In what ...
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1answer
14 views

New Intel i350 NIC not detected by system, but appears in lspci - Possible Intel IGB issue?

I'm running into an issue where a new network card isn't being automatically detected by the OS. I recently purchased an Intel I350 gigabit network card. I have purchased this card before and I have ...
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1answer
79 views

Glibc requirement update for Dropbox

Dropbox recently updated their glibc requirement to version 2.19. Centos 7 has version 2.17. It seems not to be a good idea to replace glibc manually. Is there any other workaround?
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1answer
25 views

Difference between ulimit, lsof, cat /proc/sys/fs/file-max

I've been getting java.io.IOException: Too many open files while running a Kafka instance and using one topic with 1000 partitions so I started investigating the file descriptors limits in my ec2 vm. ...
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0answers
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Wireless USB Adapter TP Link TL-WN822N v5 not detected on Centos 7

I am trying to set up the TP-Link WN822N v5 on Centos 7. I am running CentOS Linux 7 with the kernel: Linux 3.10.0-327.28.3.el7.x86_64 But the wireless usb adapter does not get detected. When I ...
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0answers
12 views

NFS server seems to kick diskless nodes off

I'm currently helping setting up a lab that will use diskless nodes for some MPI and CUDA computing. The distribution of choice is CentOS 7. To set up the diskless nodes I've followed the guide here. ...
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0answers
13 views

Bash script to watch a log file and react to help catch form spam [on hold]

I found your post on SO Best way to follow a log and execute a command when some text appears in the log You are at the very bottom of the post where you made it readable and that makes sense (to ...
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0answers
16 views

Bring gnome-terminal and other processes hidden after reconnecting to remote CentOS 7 desktop

Connecting to a remote CentOS 7 desktop (via xrdp, from these instructions: https://www.itzgeek.com/how-tos/linux/centos-how-tos/install-xrdp-on-centos-7-rhel-7.html) from Windows 10 Remote Desktop ...
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0answers
20 views

Configuring x windows on CentOS7 inside an Oracle VM VirtualBox

I am having a devil of a time getting a GUI to work in CentOS 7, when running as a virtual machine. The vanilla install of CentOS worked and brought up a GUI, but it promptly self-destructed on a ...
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0answers
17 views

Does “### BEGIN INIT INFO” section of service scripts have any effect in Centos?

I am testing under: Centos 6.8 If I do man chkconfig there is a section saying the following: chkconfig also supports LSB-style init stanzas, and will apply them in preference to "chkconfig:" ...
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1answer
18 views

ping6: 'Name or service not known' when using %iface notation

From man ping: -I interface interface is either an address, or an interface name. If interface is an address, it sets source address to specified interface address. If interface in an interface ...
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0answers
26 views

can resolve a domain, ping the IP, but can't ping the domain

I am running centOS 6.2 in a KVM. /etc/sysconfig/network-scripts/ifcfg-eth0 looks like this: DEVICE="eth3" NM_CONTROLLED="no" ONBOOT=yes TYPE=Ethernet BOOTPROTO=static IPADDR=A.B.C.157 NETMASK=255....
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0answers
11 views

ReadOnly Access for Active Directory Group

I have a Linux host that runs on CentOS 7, joined to domain through realm. My goal is to provide ReadOnly access to one of the AD groups say "LinuxRO-USR", the users of this group should only be ...
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0answers
42 views

X11 over ssh error: can't open display

I have a desktop and a server both running CentOS 7.5 and I run ssh -X from desktop to the server. After connection is made ~/.Xauthority file is written and I have $ echo $DISPLAY localhost:10.0 $ ...
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1answer
31 views

Question: how would you have configured the default route?

I have a question what command would you use to configure the default route? I mean, I've tried: ping 192.168.3.50 PING 192.168.3.50 (192.168.3.50) 56(84) bytes of data. 64 bytes from 192.168.3.50: ...
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1answer
27 views

Configuring CentOS 7, ParaView and Oracle VM VirtualBox on Windows 7

I am attempting to run OpenFOAM 2.3.1 on an installation of CentOS 7, running inside a virtual machine hosted by Oracle VM VirtualBox on a Windows 7 machine. I am not trying to use any remote ...
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0answers
18 views

Deluge multiple user/daemon on CentOS 7

My goal is to run several instances of deluge daemon (web) to use multiple user on the same server. I have tried the following but it gives no result : systemctl stop deluge-web vi /var/lib/deluge/....
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1answer
30 views

Centos 7 server iptables Active: active (exited)

When I check the iptables service status it says Active (exited) why and how do I fix it?
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1answer
36 views

Cannot Install busybox on centos

When running sudo yum install busybox On Centos 07 I receive this error Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.vorboss.net * extras: repo.uk....
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0answers
13 views

rpmbuild gives File not found error when build an RPM from source

I am trying to build an RPM for this software collection: https://epics.anl.gov/download/base/base-3.15.5.tar.gz . When you extract the archive it may seems a normal source code, but it only requires ...
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1answer
20 views

directory listing command error after install google-authenticator on CentOS 7

Status CentOS 7.5.1804 (Core) Linux 3.10.0-862.14.4.el7.x86_64 Problem After I installed and setting google-authenticator packages, weird authentication related message keep shown when I use ...
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1answer
26 views

“su user” does not work on CentOS 7

I have a new CentOS server. This is server uname info: [root@server ~]# uname -vr 3.10.0-862.14.4.el7.x86_64 #1 SMP Wed Sep 26 15:12:11 UTC 2018 [root@server ~]# When I try to change user using ...
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1answer
12 views

hpsa_allow_any=1 and centos7.5

I have the old HP server with Smart Array controller. CentOS boots only with hpsa_allow_any=1 option. I type this string every time after server reboot. But I want to save this option forever, what's ...
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1answer
21 views

I'd like to setup a bond0 interface using 2 eth devices in CentOS 7 in VirtualBox?

I would like to set up a CentOS 7.x VM inside of VirtualBox so I can experiment with bonding interfaces. How can I set up this VM so that it has the following interfaces: eth1 (private network - 192....
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0answers
27 views

Unrecognised service in /etc/init.d/ despite 755 permissions, when calling from a script

I have a service in /etc/init.d with 755 permission. When run directly with sudo, this service runs fine. When run by a user, service gives /etc/init.d/myservice: unrecognized service Also when ...
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0answers
27 views

wget behaves differently on cygwin and centos

On cygwin this command works as expected and exits immediately: wget --post-file oryxblock.2018-10-10_20_40-07_591.204.txt --output-document - --header "Content-Type: text/csv" http://htm-psycho-402....
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1answer
90 views

How to install tmux on Centos?

When I execute yum install tmux, it gives me an error: Setting up Install Process No package tmux available. Error: Nothing to do Any idea on how to solve this issue?
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0answers
16 views

Centos 7 startup fuzzy screen

When I start up my computer instead of seeing the CentOS loading bar I see this colored fuzzy screen shown here: I see the following errors in /var/log/Xorg.0.log: [ 19.274] (EE) [drm] Failed to ...
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0answers
18 views

CentOS guest OS black screen

I have CentOS 7 installed as guest OS in VirtualBox. Host OS (which is Windows 10) has 16Gb of RAM and guest OS has 8Gb. Everything, including guest, host and virtualbox are latest version. Since ...
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0answers
11 views

Copy file from server to local using smbclient from Linux terminal

When I enter: sudo smbclient -d3 "//server26.onmicorp.com/DFS/MyFile" OMNICORP/myname I get the error: [sudo] password for elvis: lp_load_ex: refreshing parameters Initialising global parameters ...
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1answer
26 views

NIC interfaces and physical ports

I have a physical server with 4 network ports and 3 network cables attached to port1 , port2 and port3. OS is Centos 6 and it has 4 files eth0, eth1, eth2 and eth3. Are these files matched with ...
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1answer
34 views

Docker CentOS systemctl

I trying to build a CentOS image with systemctl command. But each time when I build it. I obtain this error : Step 6/10 : RUN systemctl enable syslog-ng && systemctl start syslog-ng ---> ...
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0answers
23 views

rsyslog filtering on syslog server

I have below relevant logs in default file /var/log/messages: 1 2018-10-07T01:32:20.898Z TestFW2 RT_FLOW - RT_FLOW_SESSION_CLOSE [junos@2636.1.1.1.2.34 reason="idle Timeout" source-address="100.73.10....
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1answer
9 views

Install rdiff-backup on centos 7

I'm having trouble installing rdiff backup on Centos 7. Every google search is telling to get this https://dl.fedoraproject.org/pub/epel/7/x86_64/r/rdiff-backup-1.2.8-11.el7.x86_64.rpm one way or the ...
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0answers
12 views

Install a linux like CentOS 7 readonly via PXE on a usb stick?

is there a way to install a linux like CentOS7 from a PXE bootserver on a usb stick? The linux should be a readonly system on a stick. I have a bootserver and I can boot or install from this server. ...
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1answer
33 views

Same pubkey allows access on one user, but not another [duplicate]

So I have a centos 7 server with 2 users. User1 has the ~/.ssh/authorized_keys file with proper permissions and with externaluser's public key in it. User2 has the ~/.ssh/authorized_keys file with ...
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0answers
22 views

No packages in any requested group available to install or update When I install the “X Window System”

I want to install the X Window System in my remote CentOS 7.2(I use ssh login to the server) , but get bellow error: [root@localhost ~]# yum groupinstall "X Window System" Loaded plugins: ...
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1answer
36 views

Unable to shutdown workstation

I've an issue with a workstation running CentOS 7.4. I'm unable to shut it down. Whatever the methode (GUI, command poweroff, /sbin/shutdown now) I use, it automatically reboots. I don't find ...
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0answers
50 views

~1000ms latency touching file on nfs mount

I have an NFS mount where the server is on the same subnet as the client. When I time touch testempty from the client, I get: touch testempty 0.00s user 0.00s system 0% cpu 1.325 total The time ...
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39 views

Centos 7 on HP Laptop

I have an HP Envy 17" laptop that I use solely for development. I want to load CentOS 7.5.1804 (Core) on it. So I downloaded the ISO, wrote it to a USB Flash drive and then installed it. The whole ...
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2answers
93 views

Why would a large company opt for CentOS instead of RHEL [closed]

This question is on the financial and strategic motivation for a "large company" to choose CentOS over RHEL and is not directed specifically at Facebook. I just read this article. The key takeaway ...
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64 views

How do you enable the secret-tool command (backed by gnome-keyring, libsecret and dbus) in a headless CentOS Docker container?

I'm trying to use the secret-tool command to store a secret securely in a running headless CentoS 7.5.1804 Docker container, but can't seem to find which packages and/or configuration is necessary to ...
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1answer
17 views

Maximum timeout for process

I have a script which I think can take few days to finish. Basically it submits slurm jobs when queue isn't full and in the process it can wait a while. The script results in incomplete results, ...