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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2
votes
2answers
399 views

menu script over ssh

I have a script that asks for input from the user. When I run this locally it does what I want however I'd really like to run it over ssh. I've tried the regular ways I'd run a script: ssh ...
0
votes
1answer
61 views

How to reboot centos with hotkeys?

I stuck on installation in centos with some soft on error. How I can exit of installation proccess or reboot server?
3
votes
1answer
385 views

How to get gnome to run /etc/gdm/PostSession/Default when using XRDP w/ VNC

I use Microsoft's Remote Desktop Client (mstsc.exe) to connect to a linux server with GNOME as my desktop. I've set up /etc/gdm/PostSession/Default to execute some steps on cleanup - which works when ...
0
votes
1answer
77 views

Running xinetd and httpd on centos 6

We are running several centos 6.4 lamp stacks, and our backup solution (unitrends) has a client that requires xinetd. Can these two coexist on the same server? If so, is there any secret handshake I ...
0
votes
2answers
117 views

Ubuntu CentOS RHEL cross bash script su support

I know that title was a little ambiguous. Allow me to explain our issue. We designed an installer script on Ubuntu since Debian based systems are our primary core, however, some of our cloud based ...
0
votes
0answers
538 views

firewall-cmd doesn't work when called through OpenVPN connection, why not?

I recently set up OpenVPN to run on a remote CentOS 7 server. Once I establish an OpenVPN connection to the remote server from my local machine, I am able to ssh through the VPN tunnel with ssh ...
2
votes
0answers
204 views

launching fish shell to new terminal of tcsh on centos

I have downloaded fish shell on my centos, but when I switch command to /bin/fish or even try to run xterm -e /bin/fish I am getting following error: Standard input: echo $_ " "; __fish_pwd ...
0
votes
0answers
299 views

Modifying SELinux settings to allow for MySQL to run on CentOS7

I'm trying to install MySQL 5.6 on Cent OS 7 with SELinux enabled and am trying to get past the error (in /var/log/audit/audit.log): type=AVC msg=audit(1424111345.853:558): avc: denied { execmem } ...
0
votes
1answer
402 views

How to install libsnmp on CentOS 6.5?

I'm trying to use software on my server that requires libsnmp. I tried running: yum list libsnmp But it says: Error: No matching Packages to list I also tried: yum search libsnmp But it ...
2
votes
1answer
18k views

CentOS 7 persistent routing issue?

I have Googled a lot but still can't find a working way on how to make some persistent routes on centOS 7. [root@asd network-scripts]# route -n Kernel IP routing table Destination Gateway ...
2
votes
0answers
417 views

GSettings / DConf settings not saved permanently

I have a problem with GSettings /Dconf on my Centos 7 + Gnome Classic box. I'd like to turn the desktop animations off with the following command: gsettings set org.gnome.desktop.interface ...
0
votes
1answer
874 views

how to make firewall changes permanent via firewall-cmd?

I am trying to open some ports in CentOS 7. I am able to open a port with the following command: firewall-cmd --direct --add-rule ipv4 filter IN_public_allow 0 -m tcp -p tcp --dport 7199 -j ACCEPT ...
1
vote
1answer
67 views

CentOS Black Screen after 4+ hours of indexing

I am running a CentOS virtual image on virtual box. It has liferay and solr installed on it and I am trying to index a Lar file that is 50+ MB of metadata. This is estimated to take more than 12 hours ...
0
votes
0answers
38 views

VirtualBox state suddenly SEEMs to have been restored to an earlier time

I have CentOS 7 installed on my Windows 8.1 VirtualBox, and file-system sized 30Gb. It worked fine until this morning, then the storage became full (due to Downloads and Projects). I tried a tool ...
0
votes
1answer
135 views

How to put dracut to initframs?

I try to make SElinux permissive. I changed the config from disabled to permissive. However, I guess it does not recognize that change. In the red hat web site, It says : If the system was ...
2
votes
1answer
261 views

Frequently can't access Virtualmin via browser

I have a CentOS 5 server over at Digital Ocean which has Virtualmin installed (because I'm a newbie and still learning). Virtualmin is accessed by visiting https://ipaddress:10000 but that URL almost ...
2
votes
1answer
9k views

What's the difference between “errors:” “dropped:” “overruns:” and “frame:” fields in ifconfig RX packets output?

Can someone please elaborate on the difference between the various RX packets fields in ifconfig output? For example, let's say I run ifconfig and see the following: eth0 Link encap:Ethernet ...
0
votes
2answers
819 views

how do I find the location of mysql drivers on CentOS 7?

MariaDB is installed on a remote CentOS 7 server. How can I find the location of the nearest equivalent to mysql-connector-java-5.0.8.jar in the server's file system? grep seems to only search ...
0
votes
1answer
370 views

Entries in /etc/crontab not getting called in Centos 6.x

I created a dummy entry in /etc/crontab, but it doesn't get executed according to the cron log: /var/log/cron: Feb 7 08:20:01 localhost CROND[22781]: (root) CMD (/usr/lib64/sa/sa1 1 1) Feb 7 ...
0
votes
2answers
3k views

CentOS - commands in rc.local not run

My /etc/rc.local script is quite simple, like this. #!/bin/sh touch /root/test1 touch /var/lock/subsys/local touch /root/test2 modprobe -r ftdi_sio modprobe ftdi_sio vendor=0x0403 product=0x6015 ...
1
vote
1answer
1k views

Initialization Sequence Completed, but terminal wont give a prompt

I just installed openvpn on a remote CentOS 7 server using the instructions in this tutorial. The only change I made to the tutorial was to use @GarethTheRed's instructions for configuring ...
1
vote
0answers
79 views

Compatibilty of the following softwares

I am a professor (Mechanical Engineering department) at a college which is making the transition from Windows to Linux. However, we are quite unsure whether all the CAE softwares that we use would be ...
2
votes
0answers
70 views

Automate a gratuitous ARP every x seconds

There may be another issue here, so any other questions or comments are welcome. I have a CentOS 6.6 VM running under VirtualBox. It is connected to a GNS3 topology using a UDPTunnel. Everything ...
10
votes
4answers
5k views

/bin /etc /lib64 /root /sbin deleted or moved by mv folder/* /* while su

OS is Centos 6.5 64-bit I downloaded a tar file and wanted to untar and mv it. I untared, then accidentally (as root) ran mv folder/* /* instead of mv folder/* . bash said it couldn't overwrite some ...
3
votes
1answer
183 views

RES memory more than initial and maximum memory for java

We have a java application running on Centos 6.4 what we notice is that the RES is around 370m which is more then the allocated max that is 256m. Does this signify that we the application is leaking? ...
-1
votes
1answer
1k views

How do I read Maildir RFC822 messages from the CentOS 7 terminal?

In a CentOS 7 server with dovecot, postfix, mailx installed, I have mail configured to be stored in Maildir format. How can I use the terminal to access and view the RFC822 messages stored in a ...
0
votes
1answer
340 views

Can call login command from terminal

I want to create a user using useradd from root in my terminal window, after it I call passwd to set user's password. So I cant call login username because when I call it from terminal it closes ...
1
vote
1answer
542 views

How to run specific architecture (32/64) of Python in Centos6 when both are installed?

I have a Centos 6.6 Docker image being used for an automated build. It has the default x64 Python 2.6.6 installed. I need to run some things in a 32-bit Python environment. I snagged the ...
3
votes
1answer
390 views

Setting up domain with multiple servers

I am setting up a small web hosting service for my clients. I have my dedicated server which will be the shared server to host clients websites using WHM/cPanel. I have a separate VPS server that I ...
1
vote
0answers
58 views

How do I stop recurring error messages from appearing in messages and auditd.log?

On my CentOS linux machine, in my auditd.conf file, I have set my max_log_file_action=keep_logs. However, in my /var/log/messages and /var/log/auditd.log, the following message appears multiple times ...
2
votes
1answer
1k views

CentOS: Avoid that ALT-F4 switches to console

At least every Linux system that I worked with used the convention to switch to the non-graphical consoles by Ctrl-Alt-F1, Ctrl-Alt-F2 and so on. Recently, I installed CentOS 6.3 on a machine. The ...
0
votes
1answer
43 views

how to update packages to current versions on the RH family of distros?

I am a amateur+ administrator (use Linux since 1993 on a number of machines (from 1 to 50)), this is to say that I never went deep-neck into gory details of the differences between distributions and ...
0
votes
3answers
453 views

creating and sending a self-signed public key using GnuPG in CentOS 7

I know that I can create a GPG keypair from the CentOS 7 terminal by typing gpg --gen-key and following the resulting steps, but how can I make sure that the resulting public key is self-signed? And ...
1
vote
3answers
3k views

Linux empty buffer cache command permission denied

I'm using the following commands to flush cache: # sync; echo 3 > /proc/sys/vm/drop_caches # sync; echo 2 > /proc/sys/vm/drop_caches # sync; echo 1 > /proc/sys/vm/drop_caches When I use ...
1
vote
1answer
161 views

Set up graphic interface (desktop) for remote connection

I was assigned a CentOS VM that I manipulate through Putty. Everything I do to it is by command line so far, and I have admin rights to it. The VM is stored in the corporate data center served up by ...
3
votes
2answers
272 views

Is there a correlation between CentOS and RHEL versions?

I am trying to install an HP NC364T (4 port ethernet adapter) onto a machine running CentOS 7, however HP only supplies drivers built for RedHat, SCO, SUSE, Sun and Solaris. I know CentOS is intended ...
2
votes
1answer
143 views

terminal converts first letter to uppercase

After a $ vagrant ssh into a Centos 7 VM, - If I type a command in the VM terminal that uses zsh shell, the first letter gets uppercased. How can I stop this behaviour? I briefly looked at $ stty ...
0
votes
1answer
36 views

suddenly no service, except ssh is accessible from wan

I recently did install the GNOME Desktop and Graphical Administration Tools package groups to my remote host, for remote desktop connection. After the installation of nearly 550 dependencies was done, ...
-2
votes
2answers
300 views

installing GnuGPG with Thunderbird on CentOS 7

How can I install GnuPG on my CentOS 7 system? I want to use GnuPG alongside Thunderbird and Enigmail to manage pgp keys, as per the instructions in this link. The problem is that the download ...
2
votes
2answers
1k views

Remote server randomly hanging on ssh login

I'll try to ssh into the server ssh name@box-a At which point I'll usually be prompted for a password and then it logs me in. Sometimes though, when I try to ssh in it just hangs after I press ...
0
votes
2answers
1k views

How to add Ip Aliases with Two Gateway on same nic Centos

I have 2 allocated address range, example 10.10.12.25/28 10.12.12.24/28 How to add Ip Aliases with Two Gateway on same nic with Centos?
1
vote
0answers
523 views

module scsi_wait_scan not found on CentOS kernel-ml causes kernel panic on boot

I am attempting to upgrade from kernel-lt to kernel-ml, following the instructions here, however on boot the console is flooded with module "scsi_wait_scan" not found This leads to a general kernel ...
6
votes
3answers
9k views

Blocking outgoing connects with iptables

I have a (non production) machine where external supporters have shell-access (non-root). I want to prevent them from going further on into our network from that machine using iptables. The "normal" ...
1
vote
1answer
2k views

“SELinux is preventing /usr/sbin/openvpn from name_bind access on the tcp_socket”

I am configuring an openvpn server on a new centos 6.5. But the main problem is that selinux is blocking openvpn to use the default port tcp 1194. The following is the sealert -a ...
1
vote
1answer
211 views

Initialise USB devices before hard disks during grub2 boot

I have a CentOS installation on a portable USB stick, with a grub2 installation on it's first partition. The system can boot when there are no internal hard drives plugged into a machine, but fails if ...
1
vote
1answer
1k views

How to install webkitgtk1 on RHEL7

I am running software on RedHat Enterprise Linux 7 which requires libwebkitgtk-1.0. Unfortunately RHEL7 comes only with webkitgtk3. In contrast, RHEL6 had only webkitgtk. Other distributions like ...
7
votes
1answer
14k views

-bash: phpize: command not found on Centos 6

When I try to run phpize I get -bash: phpize: command not found I have run yum -y install php-devel but that returns: Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * ...
3
votes
3answers
988 views

Can't start a ZNC service

I try to start ZNC using the following command service znc start I get this error Starting znc: /usr/bin/dirname: extra operand `2>&1.pid' Try `/usr/bin/dirname --help' for more ...
4
votes
1answer
493 views

Can ACLs override file perms on Linux?

I struggled with this problem on FreeBSD recently, but thank God for ZFS which solved it for me there. However I have it again in CentOS with ext4 and don't know if there is an easy way around it (or ...
2
votes
2answers
8k views

how to set crontab PATH variable

I had a problem running a script from crontab. After some research I understood the problem was because PATH parameter doesn't include /sbin. I looked what it does include in /etc/crontab: ...