Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [centos]

Community ENTerprise Operating System; a Linux distribution based on Red Hat Enterprise Linux widely used on web servers.

0
votes
1answer
8 views

Pip not included in Python3.6 on CentOS 7?

When running which python3.6, I get /usr/bin/python3.6. But when I try python3.6 -mpip install matplotlib, it says /usr/bin/python3.6: No module named pip. I was informed that pip SHOULD be ...
0
votes
0answers
7 views

fresh FreeIPA server installation has periodic httpd segfault error

I'm having an issue with a fresh FreeIPA installation on a CentOS 7 server. I installed and configured FreeIPA (ipa-server-4.6.4-10.el7.centos.x86_64) per their quickstart guide: https://www.freeipa....
-1
votes
0answers
19 views

What the shell in linux to Delete file and folder if condition is met

I just a newbie learning the shell of Linux. So I need to do below: Check a Folder name "Backup" if any files and folder which was older than 7 days -> delete (delete both folder and files) on CentOS ...
0
votes
0answers
12 views

How do I enable nested virtualization centos 7

I have a AMD processor, I enabled SVM in the BIOS and I'm using VMWare Workstation Pro 14, and my host is Centos 7.6 configured as a Server with GUI, UEFI Boot. I'm having problems creating a nested ...
0
votes
0answers
20 views

Squid proxy is not caching but internet is passing via squid server

I am facing issue with squid cache server.Internet is passing via proxy server but download file is not caching.It is taking same time to download the same file after multiple attempts as well.
0
votes
0answers
10 views

Using Certbot on CentOS and Nginx, wrong Nginx.config file location

I am trying to install a certificate for my server but running Certbot --Nginx gives me the following error Error while running nginx -c /etc/nginx/nginx.conf -t. nginx: [emerg] open() "/etc/...
0
votes
0answers
7 views

NPM installing global packages in /root/node_modules

I've installed and used node/npm on more systems than I care to count, the majority being Linux/CentOS machines. I have a CentOS 7 installation that installs global packages in /root/node_modules. ...
0
votes
0answers
9 views

CentOS7 w/ 4.20 kernel - Can't get kdump to save vmcore files on path or ssh

I am having trouble configuring kdump to properly save a vmcore dump on any media, such as path /var/crash or via ssh. kernel 4.20.0-1.el7.elrepo.x86_64 CentOS Linux release 7.6.1810 (Core) [root@...
0
votes
0answers
24 views

How to install postgresql-contrib-11 on CentOS 7?

So, I was trying to install extension citext on PostrgeSQL 11.1, but of course I've encountered an error: ERROR: could not open extension control file "/usr/pgsql-11/share/extension/citext.control": ...
0
votes
1answer
15 views

How can I configure firewalld to block all outgoing traffic except for specific ports while allowing localhost to access any of its own local ports?

I'll confess at the start that I'm asking this question only after finding the answer and wanting to share it with everyone else. If this is bad form, then my sincere apologies and I'm open to the ...
-2
votes
1answer
31 views

Vsftpd is not working properly

OS:CentOS 7.6 64bit problem The FTP service is not working properly. Repeatedly log in when connecting. Unable to authenticate user. Information is provided below. If you know how to solve this ...
1
vote
0answers
17 views

Why 32bit CentOS 6 can run 64bit software?

Screenshot of "uname -a", "/etc/redhat-release" and "file": screenshot It show that the "brook" executable is 64-bit and my CentOS 6 is 32-bit, But the executable work correctly! Here is the ...
0
votes
1answer
23 views

Unmounted/unpartitioned HDD wakes up ~4 times per day on CentOS

I have a small CentOS server (minimal installation). It has HDD connected, but this HDD is not partitioned. Just a blank unused drive for future tasks. I want this HDD to stay in sleep mode when it is ...
0
votes
0answers
22 views

Cent OS DNS Slave says failed to connect: host unreachable

I have a DNS Master (192.168.102.159) and Slave (192.168.102.132) servers, both are VMs, the Master configuration is fine and does both forward and reverse lookups, however, when I try zone transfers ...
0
votes
1answer
68 views

Unable to connect CentOS VM x86 machine to the internet

I have 2 VMs created under Virtual Box, One - CentOS VM x86 machine Two - Ubuntu VM x86 machine. Both have the same Network configuration. However, i am able to access internet under Ubuntu VM and ...
0
votes
0answers
28 views

CentOS 6.5 to 7.0 upgrade broke roundcube

Good day all. All I did was a "yum update" command and updated. I got a message "96 packages excluded due to repository priority protections". Roundcube was working perfectly before I did this. Imap ...
0
votes
1answer
39 views

Unable to install Postgres extension pg_prometheus and prometheus-postgresql-adapter manually on CentOS

I am trying to setup Prometheus with PostgreSQL DB on a CentOS server. I am able to install Prometheus and PostgreSQL on the server but unable to install pg_prometheus extension and the prometheus-...
0
votes
0answers
11 views

Bluehost CentOS install PHP libsodium with Yum

I'm kind of a newbie linux user and have this problem where i need to install libsodium on my bluehost server. I'm using PHP 7.2.15, and you can see my current phpinfo() by visiting picklists.ca I ...
0
votes
0answers
18 views

Switch php version on Cloud (Redhat? Centos?)

I'm confused about my cloud VPS. With cat /proc/version I got: Linux version 2.6.32-754.6.3.el6.x86_64 (mockbuild@x86-01.bsys.centos.org) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-23) (GCC) ) #1 SMP ...
0
votes
0answers
30 views

Intermittent connection on centos on clean install - logs point to christian polyamorous society IP?????

I am getting an intermittent connection when fresh PXE installing centos 7.5.1804 with digital rebar though I don't believe this has anything to do with the method I am using to install the OS. Works ...
1
vote
0answers
19 views

Centos - Can not remove file as Root (no error, nothing)

as stated in title, I cannot remove file from centos as the root user. rm filename.php rm: remove regular empty file ‘filename.php’? y Nothing happens, file still in place OS: CentOS Linux release ...
0
votes
0answers
12 views

VirtualBox Guest Additions do not allow system to start

VM - Centos 7. The story: the electricity accidintly turned off. When I loaded my pc and tried to run my VM, is stucked on message. This message had been appearing before this accident, but it didn`t ...
0
votes
0answers
15 views

SSH server only for Tunneling

I'm trying to create Linux Terminal server. For this I'm using X2Go with ssh. I would like to separate ssh server from X2Go. So i create new sshd config and systemd unit for second ssh server with ...
1
vote
0answers
52 views

Installing Ruby 2.4 on CentOS 7

I installed CentOS 7.4 minimal setup on my system. My next task is to setup Redmine. It needs ruby language. For Redmine version 3.4.x and future maintenance, I think it would be better to install ...
0
votes
0answers
8 views

Changing xguest configuration

I want to use xguest in Centos 7 to provide a lab interface that is secure from tamper, malicious or otherwise. The problem I am having is how to change the resolution and add startup scripts to the ...
0
votes
0answers
22 views

Upgrade kernel to 3.10 and above on Centos 6.8 server machine

I have server with centos 6.8 and many wordpress sites running on it. I want to start using Docker in this server. But Docker requires Kernel > 3.10 Presently my kernel is: Linux 2.6.32-642.3.1....
0
votes
0answers
17 views

lpstat : undefined symbol error

I would like to list all printers installed on my machine so I run the following command : lpstat -a But I get the folllowing error : lpstat : symbol lookup error : lpstat: undefined symbol: ...
0
votes
0answers
20 views

Windows guest failing to install with virt-install on linux

So I run virt-isntall with an ISO image along the lines of the example here: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/...
0
votes
1answer
18 views

My package's new updateinfo.xml shows up in the yum cache, but isn't displayed as a security update by yum update

I have a package I want to release a security update for. So I added an updateinfo.xml and used modifyrepo to add it to the files listed by repomd.xml. When I test with the baseurl of the yum repo ...
0
votes
1answer
15 views

How can I show installed CSP's on my Linux system without using the cpconfig util?

How can I show a list of installed Crypto Service Providers without using cpconfig or csptest? How can I check if there's a CSP on the current Linux system? The system is not mine and I'm told to ...
-1
votes
0answers
14 views

Sand Disk Ultra USB pen drive suddenly became read-only [duplicate]

Pen drive - Sand Disk ultra 64GB 3.0 (genuine) There is no physical write protection switch on the drive df output : /dev/sdb1 61753984 61753984 0 100% /run/media/test/JD-64 [root@...
0
votes
1answer
39 views

How do I assign an arbitrary name to a network interface based on hardware location? (CentOS 7)

I have multiple identical appliances runing CentOS 7 with four on-board NICs. To maintain a similar feel to an older version of the appliance running RHEL6 (i.e., ethX), I want to use the network ...
0
votes
0answers
54 views

Server memory full when application is using only less than 50% (9GB out 0f 20GB)

Using Centos 6.9 release Jira application freezes on 100% server memory trying to understand where this memory is used, i ran the following commands, and found only java to consume memory. Please ...
0
votes
0answers
56 views

Stuck in a CentOs guest boot loop after installation of VirtualBox guest additions

I upgraded VirtualBox to the latest version: 5.2.22, installed guest additions from within my CentOs guest and rebooted. Now, my CentOs guest is stuck in a boot loop and I can't figure out how to get ...
0
votes
0answers
32 views

No console after installing new kernel (from ELRepo)

I got a new Dell R530 server recently and have installed Centos 7.5 (1804) on it (tried 17.04 as well!). I installed new kernel from elrepo on the system. The issue I am encountering is that if I boot ...
0
votes
1answer
45 views

Sharing a Hard drive on Centos and using samba

I am having issues sharing a external hard drive using samba on centos. I am able to view the share group from my windows machine but when I attempt to accsess it, it says "you do not have permission ...
9
votes
3answers
1k views

Partition disappeared after shrinking

I am using Windows 10 on an old Pentium Laptop. It had 4 partitions: C,D,E (System Reserved) and F I wanted to created unallocated space for CentOS. I used Windows 10 Disk Management to shrink C: ...
1
vote
0answers
5 views

Whats the equivalent command for “docker.io -d -b br10 &” in centos7

I am learning docker and need your help in below: I have created a bridge network and want to add it to docker. The tutorial was performed on ubuntu so the tutor user "docker.io -d -b br10 &" to ...
0
votes
0answers
260 views

enabling intel vt-x virtualiziation in asus motherboard

motherboard specs: asus strix h370-f https://www.asus.com/us/Motherboards/ROG-STRIX-H370-I-GAMING/specifications/ cpu: intel i7-8700 non k I am trying to work with virtual box, vmware etc and i ...
0
votes
1answer
50 views

how do I ssh Linux VM over virtualbox from windows

I spin up a Centos7 virtual machine over Virtualbox and trying to access via ssh from putty over windows from another machine in a same network, below are the details of my VM: IP addresses: Windows ...
0
votes
1answer
36 views

Home server becomes unresponsive after indeterminate time

I've been having an issue with a home server of mine (mostly used for plex) becoming unresponsive after steadily decreasing amounts of time. I originally noticed the issue a few months ago but put ...
0
votes
1answer
193 views

CentOS 7: installed devtoolset-7, but GCC 7.8 is using GCC 4.8 installation's old C++ include files

I'm trying to compile and install Pistache on a CentOS 7 machine, following their instructions. This is a package that requires C++ 11, so since the Development Tools package on CentOS 7 installs an ...
0
votes
1answer
36 views

CENTOS command won't run on startup

I have rtorrent installed and I am trying to run this command so it runs automatically on startup: screen -S rtorrent -d -m su root -c "rtorrent" I added it to: nano /etc/rc.local But nothing seems ...
0
votes
0answers
11 views

Username canonicalization in kerberos tickets

I have following problem with my system. Server-Linux is attached to Active Directory and hasAD-REALM. Client-Linux is attached to freeipa and has LINUX-REALM. Freeipa trusts Active Directory (one ...
0
votes
0answers
40 views

VPN over layer 2 setup

Firstly, I'd like to mention, that I have only some IT knowledge, so I'm looking forward for you correcting me everytime I get something wrong :) Also, I'm not expecting cmd-by-cmd solution, although ...
0
votes
0answers
23 views

yum update failed “StopIteration” hdr = idx.next()

Just trying a routine yum update And first got this: ... Cleanup : ncurses-base-5.7-3.20090208.el6.x86_64 ...
1
vote
0answers
14 views

Give access to CloudFlare IPs in iptables

I trying to DROP all requests except CloudFlare requests, and give SSH access to a certain ip. so I write this rules : iptables -P INPUT DROP iptables -P OUTPUT ACCEPT iptables -P FORWARD DROP ...
0
votes
0answers
17 views

Lost connectivity after creating macvlan

I am a complete noob at Linux networking, but I have a homeserver with a bunch of KVMs for various services. Anyway all the KVMs have macvtap interfaces, which means that by default the host cannot ...
0
votes
1answer
104 views

FFMPEG - why do I end up with old version after installing?

I managed to install FFMPEG on Centos via WHM following this guide. But when I run ffmpeg -version I get: 2.8.15 ...whereas the official site says the latest version is 4.0.2. How can I update my ...
0
votes
1answer
18 views

How to make UFW work with firewalld on CentOS 7?

I've installed UFW on a fresh CentOS 7 installation, but it doesn't open the ports. I'm configuring UFW as I would on a Debian system: sudo ufw default deny incoming sudo ufw default allow outgoing ...