Red Hat Enterprise Linux (RHEL) is a commercially supported Linux distribution.

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Listing previous logins through sftp

Hello people of the stackexchange, I am having a little difficulty trying to find a location of a particular log file which i'm hoping someone on here could help me with. What i am trying to do is ...
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45 views

Send big data with dsmigratedata command

I want send data to remote server using this command but I dont know what is the syntax is that I can use for this command... I'm using the command: $ dsmigratedate -s user@remoteip -p 22 password ...
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233 views

How different is I/O handling of hard disk in AIX and Redhat Linux?

I am running a hadoop I/O workload in redhat linux and have ran that in IBM AIX as well with same underlying hardware, disk and disk configuration. With the default settings on the os redhat linux is ...
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125 views

RHEL6 LDAP client not listing all the groups

Using sssd I have a RHEL6 client configured to login using LDAPS. The login works, but if the user logged in is assigned to more than 1 group at the LDAP level, groups only returns 1 group? Could I ...
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3k views

Undefined reference to gzopen64 when building samtools

I am trying to install the software package samtools0.1.19. When I run make, I get errors: gcc -g -Wall -O2 -o samtools bam_tview.o bam_plcmd.o sam_view.o bam_rmdup.o bam_rmdupse.o bam_mate.o ...
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113 views

Identifying MaxSpeed of a Bonded Interface

I have configured Ethernet Bonding for our RHEL 6.2 Servers. Bonding is working fine but few confusion for me when I configured MRTG to monitor the bonded interface. MRTG is showing MaxSpeed of the ...
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193 views

after enabling Xinerama (in AMD condor Dual-Head Graphics Card) the system graphics hangs

I have a problem in my AMD Condor Dual-Head Graphics Card When I enable Xinerama from "System → Preferences → AMD Catalyst Control center (Administrative)" my RHEL Server 6.3 (x64) Graphics hangs. ...
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486 views

How to switch user if the Screen is Lock

Sometime this happen that when I had to do something on server I find that the screen is lock and I dont know the password of that user to unlock it and switch the user. So i need to know that How to ...
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979 views

How to Disable AutoMount of External Drives

Is it possible to Disable auto mount of External Harddrives or USB's in RHEL. For security reasons I have to disable this feature. And when I need it I will enable it back.
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1k views

Can't ping first IP with dual NICs on different subnets with multiple gateways

I have two NICs assigned to a server. eth0 - 10.199.10.0/24 w/ a GW of 10.199.10.1 eth1 - 10.199.20.0/24 w/ a GW of 10.199.20.1 From my desktop, I can ping the IP assigned to each NIC just fine ...
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407 views

Negative hdd usage. Available is larger than fullsize

Having issues with space accounting of lvm volume. 23G is available. But the full size of the partition is 20G. (So, it shows "-4.1G used" 0_O) > df -h Filesystem Size Used Avail Use% ...
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214 views

not all initrd.img's are born equal?

I am trying to get a Red Hat 5.8 box booting via pxe. The box is a virtual machine on ESX5.0 it has a Paravirtual SCSI Controller and VMXNET3 network driver. Now these drivers do not come default in ...
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487 views

RHN Satellite scout won't push

My RHN Satellite (Spacewalk) server is having issues with monitoring. The Spacewalk Monitor Scout will not push out successfully. It always stops with a Request Expired status. I can't seem to find ...
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939 views

iptables not starting up

I have inherited a custom built Linux kernel 2.6.30.9 and am just upgrading the underlying OS from RHEL 5.4 to 5.8 (kernels 2.6.18.164 and 2.6.18.308 respectively). When booting, the following is ...
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115 views

How to recover a multiboot configuration after having installed Windows 7?

I've installed Windows 7 and XP on my laptop. After that, I installed RedHat 5. Now the problem is that I'm not able to load my RedHat. What should be done to fix this problem?
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96 views

Some of the users login screen do not display colors

In my lab I have Redhat Enterprise Linux 5 server. Users log in through telnet for C programming Some of the users' login screens display colors, while some other users login screen do not ...
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581 views

Can't make a copy of /var/lib/mysql/ibdata1

I have a RedHat Linux server and I'm trying to make a copy of /var/lib/mysql/ibdata1, but I'm receiving an error saying permission denied and the file cannot be opened. I'm logged in as root user and ...
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219 views

Flash drive not working on a particular RHEL machine

I have a 32 Gib flash drive. The first time I copied files to it, it failed with a write error and the drive was no longer recognized by the server. I ran a scan on it using Windows chkdsk, which ...
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10 views

Implications creating System Accounts “useradd -r” Linux Fedora/RHEL/CentOS

I want to know what are the implications of create an account using -r option? # useradd -r ... The help says: -r, --system Create a system account. System users will be created with no aging ...
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20 views

Have kickstart install TCPdump

I have a kickstart file for RHEL 6 and in the package section for the installing of the TCPdump command line utility I put tcpdump as the package name. Like I did with java and g++ in the kickstart ...
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31 views

How must (Not how can) a program be available from everywhere in CentOS/Fedora

I was reading this link from MySQL: https://dev.mysql.com/doc/refman/5.6/en/mysql-cluster-install-linux-binary.html shell> cp support-files/mysql.server /etc/rc.d/init.d/ shell> chmod +x ...
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47 views

python install on linux RHEL5 - GCC 4.1.2-52

I used the following guide from the Beyond Linux From Scratch SVN Book, not knowing that my distribution was actually RPM Based (see comments), and now I am getting the following error during python ...
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21 views

not Booting a newly linux kernel inux-2.6.32.65.tar problem

when i give reboot command kernel not booting screen showing.. i uploaded this pic here , and caps lock key blanking
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30 views

rgmanager [fs] start_filesystem: Could not match “f6a58cf7-b39b-489c-add5-444ceab8af9d” with a real device

I am trying to install two node cluster for web server. We have super mico hardware HA BOX. It has 5 disk. one disk is used for node1 os installation and another disk is for node2 OS. Remaining disk ...
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44 views

receiving error message while trying to register for subscription for rhel6

I am trying to subscribe to redhat from the terminal. I have registered an account at https://access.redhat.com/labs/registrationassistant/ . So I am using those credentials to register my ...
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18 views

Linux (RHEL) installed on Windows Hyper-V supporting Virtual HBA

I have installed RHEL 6 on Hyper-V as a Guest machine. I have added Virtual Fibre Channel. But I cannot detect in the RHEL. I also don't know how to find it is working or not. Can anyone help me ...
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108 views

Installing custom RPM says “does not update installed package”

I've inherited some servers which have previously always had its software as custom compiled versions (apache, perl, mod_perl etc). I was thinking than rather than compile every time, it may be better ...
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81 views

turn on numlock at login screen. GDM

GDM is turning off numlock key. I have tried following: a) installing numlockx and inserting following lines at /etc/gdm/Init/Default if [ -x /usr/bin/numlockx ]; then /usr/bin/numlockx on fi ...
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14 views

Input focus not following window clicks

I'm running RHEL 6.5 with a generic ATI HD5480 videocard and three monitors (one connected to each port... DVI, DisplayPort, and VGA), and I'm having issues with window-activation and input-focus that ...
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23 views

RHEL6 Idle Thread Behavior

I am doing some cpu performance profiling with the perf tool on a RHEL6 box running weblogic12g. It looks like the idle threads are presented as native_safe_halt in the stack profile but ...
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32 views

kickstart does not chmod a file in %post section

I have the following code executed in the %post section of a kickstart file for RHEL 6.6. echo '#!/bin/sh' > /root/add_user echo 'if [ $# -lt 1 ]; then echo "no username provided"; exit 1; fi' ...
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46 views

upgrade glibc to 2.7 in Redhat 5

Is it a bad idea to upgrade glibc to 2.7 in Redhat linux? if yes, why is that?
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129 views

Why does my redhat 5.11 system have so many ext4-dio-unwrit processes?

I have a redhat 5.11 system running, and it looks like there are 32 of these processes. What are they, and why are there so many of them?
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29 views

Repo Management

I've been mirroring RedHat repos locally to maintain consistency among our infrastructure servers using the instructions located at: https://access.redhat.com/solutions/23016 My question is though, ...
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128 views

STDERR: yum-dump Repository Error: Cannot retrieve repository metadata (repomd.xml) for repository: epel. Please verify its path and try again

This have been a chronic issue with my servers. i use epel repo to install & upgrade nss package. But every frequently, i have this issue where it fails with the error. STDERR: yum-dump ...
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26 views

Is there a method of installing debuginfo package without registering RHEL7?

My RHEL7 isn't registered just for test. Now I want to install python-debuginfo rpm package. But according to this, it seems that I can't install python-debuginfo rpm without registration. Is there a ...
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42 views

Updating SSL Certs for Katello Web UI

I have a katello server (specifically Satellite 6.0.8) already serving content to clients. It's not currently being used as a puppet master (yet). The problem is that it's still using the self-signed ...
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32 views

What font settings would Java Applications Use without Fontconfig?

I have a java application that looks fine without fontconfig installed, however, I need fontconfig as a dependency for a package, and when I install it my java app's fonts change drastically. My goal ...
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36 views

How can I lock screen and force re-login after a period of inactivity on different linux distros

I am writing a script to lock screen after a period of inactivity and ask for a password again on desktop activation for different distros of linux. I have achieved the same with the following ...
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16 views

Could a defunct Oracle backup script cause the database to be unavailable?

I have a backup script running on RHEL 6 backing up my Oracle environment that I found defunct this morning. I don't have any more information on the defunct process yet, but I might tomorrow morning ...
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39 views

Flush Postfix mail queue

I'm running an old version of Postix (1.1.7) on my Red Hat Linux and I wanted to flush the e-mails from a specific recipient with postsuper, which comes with the postfix-perl-scripts package. However, ...
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13 views

How can I maximise Netbeans window from the terminal?

I am on CentOS 6 and using VNCViewer to remote in to a box which has four monitors. The problem is VNCViewer won't allow me to click on the Netbeans Window "Maximise" square, top-right, so I can ...
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27 views

Failed login notification at login

I have seen it before when you log into a Linux box wrong, when you do successfully log on, it notifies you that someone attempted to log on as you and didn't succeed. How is this accomplished? I ...
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30 views

asking administrative permissions for remote console session while logging

Errot:to log on to this remote console session you must have administrative permissions on this computer. this error in specific Redhat system. from other systems its working.
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18 views

How to reset the Password for Web UI of Bacula

My colleague is on vacation and I need to configure bacula but I don't know the password for user. So I need to reset the password for user. What is the way to reset the password?
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39 views

How to resolve issue of misconfigured vnc server on centos 7

While configuring vncserver in centos 7,the < USER >field in the vnc file gave me quite a bit of thoughts.whether it was to be replaced with the login name for accessing the ssh or some other ...
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26 views

What are the correct permissions for a non-root user in Red Hat 7?

I imported a pre-made Oracle Developer VM, from Oracle, into VirtualBox and the oracle user (which is not root), can't do anything without using sudo, for the most part. For example, any file I want ...
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39 views

Help filtering logs - auditd

System: RHEL release 6.3 (santiago) Issue: Once I start the audit service I'm starting to get thousands of logs in /var/log/audit/audit.log Most of the logs received are of - sshd Log sample: ...
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9 views

RHEL 5 box constantly displaying NIC statistics on console screen, how can I disable this?

I have a RHEL 5 box that is constantly displaying nic statistics on the console screen when using the KVM. This makes it very hard to do any troubleshooting when the box goes down as these statistics ...
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37 views

undefined symbol inflateEnd while using ssh

I am getting an error while doing ssh from one Linux server to another. Both are running on RHEL 6.2. server1$ ssh server2 ssh: symbol lookup error: ssh: undefined symbol: inflateEnd How to resolve ...