Red Hat Enterprise Linux (RHEL) is a Linux distribution from Red Hat intended for enterprise use.

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mount command times out when trying to mount between servers

I've got two identical RHEL boxes and would like to mount a directory from one to the other. my command: [me@serv_dev ~]$ sudo mount serv_prod:/my/dir /mnt/my/dir times out after a few minutes: ...
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How to add a compiled ntpd in services on linux?

I compiled and installed ntp-4.2.8 using this link and created a rpm by running checkinstall on RHEL 6.5. I used the command ntpd -l logs to manually start ntpd. After starting I am able to verify ...
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No ntp.conf file after compiling ntp on Linux

I'm using RHEL 6.5. I compiled ntp-4.2.8 using the steps on this link. but I don't have a ntp.conf file. ntp.conf is required to start ntpd but after compiling, there is no ntp.conf on my system. I ...
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Network connection failed :unknown reason:

Im on RHEL, and found that my VPN stopped working. I discovered that I could use the command line utility, nmcli, to try to get more info about what was happening. However, Im finding that the ...
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1answer
51 views

CentOS 7 can't ping from server

I'm having a Strange issue with CentOS 7. I have my server setup with 2 NICs a private network and a public network. I'm able to ping the server on both the private and public IP. But I cannot ping ...
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1answer
35 views

How to resolve rpm dependencies

I am trying to install libtirpc on RHEL 6.5 but it fails and asks for dependencies. Why here it is showing three GLIBC versions 2.14, 2.15 and 2.16. ?? Does it mean that any of these three versions ...
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2answers
840 views

Need to set mailx variable to specify the From address

Running Oracle Linux 5.8 (which is just re-branded RedHat EL 5.8) I must change the From address. But we have scripts that use mailx which cannot be re-written to use any extra flags, so I'd like to ...
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1answer
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Is it possible to upgrade from RHEL 4 to 6 with up2date(or yum) on or after 2012/08?

I'd like to upgrade my server's os from RHEL 4 to 6 after 2012/08. I know that there are 2 methods to upgrade. 1. directly (RHEL 4 -> 6): 1. buy a new server machine. 2. install RHEL6 on the ...
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168 views

Comparison between Oracle RAC Cluster Database (10gR2, 11gR2 and 12cR1) and deployed Oracle DB on Linux Cluster [closed]

Oracle RAC implementation may be costly for small enterprise, but how it would be if Linux cluster is implemented and then standard Oracle DB is deployed on that cluster to achieve availability like ...
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3answers
87 views

How do I upgrade scientific Linux 6.3 to 6.6

Upgrading Scientific Linux 6.3 to 6.6 I have to update machines of SL6.3 to 6.6. I tried #yum list updates and .# yum update It downloaded some files and installed . But my SL is still showing SL6.3 ...
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1answer
136 views

access control list share file but not directory RHEL6

I have a file that I want to be accessible by a single user, but I don't want the user to have access to the folder it resides in. My understanding is that the following steps should work, but they ...
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2answers
60 views

How to create a bootable usb stick for ubuntu on RHEL 6

NOTE: this question was asked in askubuntu, and I was suggested to ask here. I want to create a bootable usb stick for installing ubuntu 14.04 on my laptop. Currently I have access to an RHEL 6 ...
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2answers
530 views

Fibre Channel: QLogic Corp. QLA2300

My system is an Altix3000 running: (Linux sgialtix 2.4.21-sgi304r1 #1 SMP Sat Jan 29 22:43:29 PST 2005 ia64 ia64 ia64 GNU/Linux) (redhat-release=redhat-release-3AS-8.3). Which command do I use to list ...
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30 views

Updates don't install complaining about missing dependencies when dependencies are clearly installed (RHEL 6)

I have installed RHEL 6.2 and I am upgrading all the packages on it right now. I was expecting auto update to work, but I get these error messages when I authorize an auto update - ...
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17 views

CentOS 6 with User Permission (Read at message)

I have create users on CentOS 6 between test1 and test2 so I login on user test1 on ssh and i tried to access home dir of test2 so why it can access? how i can setting for other users can't access ...
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52 views

How do I enable/set multicast rules using firewalld in RHEL7 / CentOS 7

I cannot find docs on how to enable multicast for firewalld which is the default firewall in RHEL / CentOS 7. Can some enlighten me? FYI: I know how to do it using iptables.
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3answers
7k views

Disabling NetworkManager on RHEL 7

I was setting up a RHEL7 server in vmware vSphere and I'm having trouble getting it on the network without NetworkManager. I configured the server to have a static IP during the install process and it ...
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2answers
31 views

What is the purpose of the `daemon` group and user on RHEL/CentOS Linux?

I am on CentOS 6.5 and about to add a service to the system with chkconfig. It will run with its own system account, let's call it (the account) foobar, but I do not see the point of also creating the ...
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30 views

Installing Nvidia drivers on Red Hat

I wanted to install Nvidia drivers. Can you tell me why the following is not working : [root@INEICP-EPM-W134 Downloads]# rpm -Uvh XFree86-4.3.0-35.EL.src.rpm warning: XFree86-4.3.0-35.EL.src.rpm: ...
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3answers
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FTP from windows to linux using filezilla causes doubling of file sizes?

Running filezilla 3.3.0.1 (and slightly older versions exhibit this behavior as well) to Red Hat Enterprise 5x with filezilla server, we are getting doubling of text files on overwrite. It seems to ...
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2answers
684 views

cp --update still copies unchanged files

I'm trying to copy only changed files using 'cp -pu' under Linux (Red Hat 6.1, source/destination FS are GlusterFS mounted partitions) but I found that it still tries to copy file seemingly old and ...
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27 views

how to verify linux server security vulnerability?

I'd just install RHEL7, how do i certify that my server is free from vulnerability, virus or malware?, is the any tools or script that i can use to verify it? tq regards adabi
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3answers
797 views

Winbind group lookup painfully slow

I am running winbind on an RHEL 6 system. Everything works fine except group lookups, so many commands (including sudo) are painfully slow. I did an strace which shows that winbind looks up every ...
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How to access RHEL Host from Win7 host in the same network of Hamachi LogMeIn

I have installed Hamachi on RHEL system and joined a existing mesh network on Hamachi LogMeIn account . I have now installed Hamachi on Win7 system and joined the existing same mesh network. Now both ...
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oscap audit on RHEL7

I'm new to OpenScap and I'm having trouble putting all the pieces together to evaluate a RHEL7 system. I've got the following RPMs installed: scap-security-guide-0.1.5-4.el7.noarch ...
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1answer
56 views

How to create/edit files for a nologin user in RHEL/CentOS?

I have a user defined like so: sudo useradd -m -s /sbin/nologin foo It is not meant to be logged into but it is meant to serve a web application. However, if I try to do anything inside the ...
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2answers
6k views

Installing Oracle 11gR2 on RHEL 6.2

I'm having some difficulty installing Oracle 11gR2 on RHEL 6.2. I have compiled a giant list of every single step I have taken so far. I installed RHEL 6.2 on VMware. It did its easy install ...
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2answers
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Resizing swap partition (RHEL 5.x)

The following is what parted print outputs: (parted) print Model: VMware Virtual disk (scsi) Disk /dev/sda: 26.8GB Sector size ...
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2answers
2k views

vmdk file too large but guest os is small

I'm facing a strange issue with my virtual machine. I have an rhel 6.1 guest os running on VMware workstation (9.0.2 build-1031769) hosted on Windows 7 Enterprise 64 bit. The size of the vmdk file is ...
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Problems Configuring the VNC Session for RHEL 7 on Power8

I follow http://www.linuxexplorers.com/2014/04/configure-vnc-server-in-red-hat-enterprise-linux-7-rhel7/ to configure the RHEL 7 VNC server. At the final configuration step "systemctl start ...
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1answer
85 views

How do I calculate file size ignoring PDFs (or other binary files)?

I would like to calculate the file size of a directory tree, but I want to ignore all PDFs and images as well. Essentially, I'm trying to figure out what the size of the text-only files are. How can ...
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19 views

Gnome panels are not un-autohiding

System: RHEL 6.5, Gnome 2.28.1 I have set both top and bottom panels to autohide. Until recently this has worked fine but they've now stopped reappearing. When I first log in, they appear as normal ...
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1answer
160 views

Expose a Reverse SSH Tunnel on the Remote server

I set up a Reverse SSH tunnel from my home computer to my work server: ssh -f -N -R 19999:localhost:22 remoteuser@server To connect to my home computer I have to first log in to the server and then ...
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1answer
95 views

Running find…exec tar czvf only archives one file…need all files

When attempting to run find . -iname "*.gz" -mtime +7 -exec tar czvf all_gizip_$(date +%Y-%m-%d).tar.gz {} \; I get the list of files ./corosync.log-20140620.gz ./corosync.log-20140618.gz ...
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1answer
52 views

Init 3 command with systemd

I am using Oracle Linux 7 for test purposes. I understand that the entire RHEL family (RHEL, CentOS, and OL) is using systemd now. As far as I know with systemd instead of init 3 I should use ...
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2answers
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Error running Samba share of fuse mount

I have created a fuse directory, and start it like this: ./myfuse /home/shared -o allow_other -o umask=022 -o nonempty -d I can access it like this: ls -la /home/shared and it works fine. Ok, turn ...
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280 views

Intel Xeon stuck at 800mhz CPU Freq on RHEL 6.5

Currently running into a headache trying to figure out why my CPU speed is stuck as such a low frequency. After doing some research, I found that cpuspeedutil does actually control the state of the ...
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RHEL 6 HP Tape Driver Installation Troubles

Trying to install tape drive drivers for the HP Ultrium 3280 SAS using this guide http://h10032.www1.hp.com/ctg/Manual/c02262008.pdf Whenever, I try to execute mkltfs I get this error mkltfs: ...
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1answer
3k views

How do I configure sar to collect disk information (ala -d)?

When I run "sar -d" on my RHEL 5.7 box, I get the response: Requested activities not available in file How do I configure sar to collect disk information?
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Qt Installation woes on RHEL 6

I wanted to install qt-creator on my machine so I went ahead and downloaded the appropriate rpm package qt-creator-3.0.1-3.el6.x86_64.rpm. Soon ... rpm -ivh qt-creator-3.0.1-3.el6.x86_64.rpm ...
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declare -A on RHEL 5

I am using an associative array on my RHEL 6 servers and I just tested the script on a RHEL 5 server and apparently -A is not supported for the declare command on RHEL 5: declare -A var -bash: ...
4
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1answer
6k views

RHEL5.5 switch to CentOS repositories?

I was given a VM for a RHEL5.5 machine but I do not have a RHN subscription. I get this warning when using yum: bash-3.2$ sudo yum update [sudo] password for streamsadmin: Loaded plugins: rhnplugin, ...
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How can I specify what directories my overlay uses on a liveusb?

I'm using a Red Hat system (4.4.7-3) to generate a CentOS live USB/CD. I have figured out how to create an overlay as well as a home overlay; however, I cannot seem to grasp how to change the ...
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How to disable Ctrl+Shift+U in RHEL?

When working with Eclipse some shortcuts are not working as under Windows. Most prominently, Ctrl+Shift+U (which lists all references to the variable under the cursor within the same file, very ...
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1answer
57 views

Finding files matching path pattern and size criteria

I have a server (RHEL 5) with 50+ websites currently running on the same eCommerce software, today I found one of the error log files was over 3GB in size Is there a way I can find all files over say ...
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1answer
202 views

How do I upgrade my version of tar on Red Hat 5?

I'm running RHEL 5 and the default version of tar is horribly old. yum update tar shows that I have the latest version according to their repo. How do I go about upgrading to tar 1.27, please?
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1answer
36 views

fdisk overwriting sector 0 problems

I'm having an issue with my usb 3.0 external hard drive when I try to use the fdisk command to make an ext4 partition. It's encrypted and I've been told that modifying sector 0 of the drive overwrites ...
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1answer
20 views

Package compatibility

I have a home server running Oracle Linux 6, which is very similar to Red Hat and runs a RHEL compatible kernel. My question is, to what extent would packages originally made for other rpm-based ...
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155 views

install latest gcc on rhel 6 x86_64

I have an RHEL 6 server with gcc version 4.4.7. I wanted to update the gcc version (I think the current one is 4.8). Yum update doesn't work. Also, SO answers for a similar question on CentOS does not ...
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52 views

RHEL linux version dependant mounting if elif else

I am trying to mount as below, where the mount point is version dependant: 1) Find if any of the below 2 are mounted. 2) Find RHEL version, then mount one of the below mount -o soft ...