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

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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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1k 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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121 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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103 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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676 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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225 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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23 views

Red Hat restart not show correct login page?

When I restart my Red Hat, the screen only show the snapshot page without login page. But I can use SSH to login to start VNC. Then VNC also working well with normal X screen. Does any export know ...
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17 views

mount error “is not a block device”, for Kingston 16 GB Pen Drive

My USB pen drive auto-mounted in RHEL 7, but it is showing an error mounted not a block device, while running the command as follows: dd if=/dev/sda of=<auto mounted path of usb drive>
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11 views

Generic multiple monitor layout on RHEL/CENTOS 7

By default, RHEL7 seems to think multiple monitors are next to each other. I need to have them vertically spanned instead of horizontal. I found that modifying xorg.conf or xorg.conf.nvidia to set ...
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37 views

Linux + what are the steps use the oldest kernel version in place of the current

I have Linux red-hat 5 version I want to reboot the machine with the previous kernel - 2.6.18-408.el5 so I set the default to 1 but before I will reboot the machine to startup with the older kernel ...
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22 views

automatically install jdk when you install the server application in rpmbuild

I'm trying to do my rpm containing configured server wildfly together with the application. I'm trying to make RPM contains the JDK. The file below is only an indication of the required element. Is it ...
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16 views

fatal error: limits.h: No such file or directory Theano and anaconda

I have issues with theano. Indeed I have access to a High Performance Computing server with an old version of gcc (4.4.6), python (2.6) and kernel (2.6.32). The issue is that I need to run a python ...
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13 views

RHEL 6 no sound, but volume settings shows 100%

My sound worked perfectly on my Thinkpad T430, but ~3 days ago an update (?) came, and from than, the sound icon from the GNOME-panel dissapeared. I already tried a reboot, no luck. I tried using ...
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10 views

LAMP server Installation - httpd, mysql are 'unrecognized services'

I recently installed Bitnami LAMP server to have apache, mysql and php on my server with redhat 6.7. The installation was fine, I can see httpd and mysql processes; even the wget from localhost ...
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47 views

RHEL: GNOME - Is it possible to change Shell theme?

I have tried to change the gnome-shell-theme on RHEL, but whenever I try it GNOME crashes and the system just disables all the shell extensions installed. So, I was wondering if there is something ...
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19 views

Restored Volume Group but No LV inside

I created Volume group on 2TB ISCSI Block device . And on that I created Volume group and added the entry in fstab with options _netdev. But after reboot it didn't come online. What happened and ...
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13 views

System not pinging after running `rescan-scsi-bus.sh -r`

I am having a system on which multipath is enabled. I recently replaced a SCSI device and in order to remove old entries, I executed rescan-scsi-bus.sh -r. Now the server is not getting pinged. I ...
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34 views

awk + how to manipulate awk output

The following awk command prints the results from services file # awk '{print $2}' /etc/services 48002/tcp 48002/udp 48003/tcp How can I manipulate the output so it prints the "service file" ...
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32 views

RedHat:how to make system read /etc/sysconfig/clock settings without restarting system

In legacy red hat enterprise linux system which do not provide hwclock, I am changing UTC value in /etc/sysconfig/clock and when I check in /etc/adjtime this value is not reflected with expected ...
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18 views

RHEL 7 Install - Main partition taking up entire allotted space + other problems

I hope this is the proper place to ask RHEL questions, I have already asked on the RHEL discussions area and have not gotten any replies after a week of posting. I am having a few problems in setting ...
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19 views

add 10G fiber NIC however not able to see it go to up state

I have added a 10G Intel PCIe card to my Linux machine. I have connected both sides of the cable and the remote side comes up when I plug the cable into my linux machine and goes down when I remove ...
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17 views

Creating an user to access a specific director with just exec permission in Redhat

I am trying to create an user that I can access an specific folder and give this user just the execute access to a .sh script into REDHAT So I've created the user and set that user to the folder but ...
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21 views

Oracle 11g installation - unable to open display error (red hat 7)

I'm installing Oracle 11.2 client in a Red Hat 7 machine but I'm stucked in this step: xhost fully_qualified_remote_host_name The error that appears is the following: unable to open display ":0.0" ...
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20 views

Error during RHEL 7 installation

I am trying to install RHEL 7 on ThinkPad Edge E431 which has a touch screen. I get an error: in hid_mutitouch ....fault : -1 And the system is goes into an emergency mode. How can I complete ...
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20 views

Identifying cumulative patch version in Jboss

We are trying to identify the patch level that is applied to our Jboss servers. For Jboss 4, the information is available in boot.log as follows 09:44:51,674 INFO [Server] Release ID: JBoss [EAP] ...
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22 views

Ubuntu trusty format disk slower than RHEL7?

I observed that disk formatting is much slower in Ubuntu than in RHEL7. Does anybody know why that is? EDIT: Forgot to mention, I'm formatting the disk with ext4. Using mke2fs
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73 views

Can't change the root password from single user mode

I have redhat 6.x version I am trying to change the passwd from single user mode but I get the following passwd root changing password for user root passwd: permission denied then I try to ...
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28 views

redhat + never get the passwd prompt when login

after Linux installation version 6.x we boot the machine and when we type on login prompt the login word the login prompt return again, and again after we type the login name so we never get the ...
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23 views

sudo not working on two systems, but runs on remainder of the networked systems

This question is about sudo implementation and I was unable to find a similar question here in the forums. I'm running Redhat 6.6 on my network of 14 servers and 8 workstations. On the primary NIS ...
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44 views

how to Increase VM disk without reboot on Linux redhat 6.x + LVM

I increased the second disk in VM machine from the VSphere client GUI as the following: By right click on the machine --> edit settings --> hard disk2 --> increase the disk from 1G to 2G Then I ...
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63 views

How do I use php-fpm on RHEL 7.2?

I've already asked this on Stack Overflow but received no response, so I'm trying my luck here. I'm new to configuring Apache and I'm trying to optimize my Apache server. Reading through the ...
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30 views

Installing Plone 5-on-RHEL 7-fails-unable-to-find-libssl-or-openssl-ssl-h

sudo ./install.sh --target=/home/admin/Plone --build-python zeo Error: Unable to find libssl or openssl/ssl.h. libssl and its development headers are required for Plone. Please install your ...
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21 views

Windows getting lost behind a full screen Java application when moving mouse cursor to opposite monitor

I'm running RHEL 6.4 and I have a full screen Java application which consists of a JFrame without any window decorations that matches the resolution of the monitor. I'm also running a bare Linux ...
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31 views

no MariaDB logs in journalctl

With jounralctl I see no logs for MariaDB, but for puppet every run. # journalctl -u mariadb -- Logs begin at Mon 2016-02-29 06:26:34 CET, end at Mon 2016-04-04 18:23:00 CEST. -- # systemctl status ...
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63 views

Change from Single Path to Multipath?

I'm using RHEL 6 and have a number of production VMs which have two local disks (/dev/sda & /dev/sdb) as well as several multipath LUNs attached via vCenter as Mapped Raw LUNs. Unfortunately ...
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50 views

OpenSSL installation is missing the X509_VERIFY_PARAM function

I am trying to install clamav 0.99.1 on RedHat 7.3. My OpenSSL version is 1.0.1. I am using the below command to install clamav: ./configure --prefix=/usr --with-user=defang --with-group=defang ...
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29 views

RHEL reallocating space

I am new to RHEL 6 and I seem to be at 99% on my /usr: $ df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/rootvg-root 3.9G 2.0G 1.7G 55% / tmpfs ...
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15 views

CPU frequency stuck at minimum on Red Hat Enterprise Linux 6.7, GNOME2 panel applet won't change it, cpufreq-selector hangs

I am running a remix of Red Hat Enterprise Linux 6.7 maintained by my company's IT department on a ThinkPad T430. Every now and then, my CPU will remain stuck at minimum speed and as a result my ...
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19 views

RHEL Jenkins email notifications failing

RHEL Server release 6.7 (Santiago) I know there have been multiple questions about this on SO (none of which have helped me solve my problem), but I think my problem pertains to Linux more so than it ...
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28 views

Mount network share at user logon Red Hat

I'm looking to mount a network share on Red Hat at the time the user logs on with their credentials. The user authenticates through LDAP using Kerberos and we have a network share that holds their ...
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19 views

Error 256 in OS install disc image

I have created a yum repository by the OS install disc image trick because I have no subscription. But when I try to install any package using yum, I get the 256 error (there is no mirrors to try).
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29 views

Red Hat to Debian timezone and time adjust setup

When migrating timezone and time adjust setup from a Red Hat to another Red Hat, I only needed to copy /etc/localtime and /etc/adjtime and it solved the issue. Migration worked perfectly. The problem ...
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33 views

What does “mediaid” do in yum repo definition?

I'm performing an offline upgrade of rhel 6.5 to 6.7 using downloaded iso. https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/5/html/Deployment_Guide/s1-yum-upgrade-system.html ...
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90 views

Unable to su to any user as root on Red Hat 6.7 server

System: Red Hat Enterprise Linux Server release 6.7 (Santiago) I am trying to su to kms user(OS user) as root but i keep getting error saying You are required to change your LDAP password ...
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60 views

Linux Packet Drops Increasing Over Time

I have Linux machine red-hat version 7.1 ( VM machine ) I see that dropped value increase every second!!! Please advice how to find the problem , and if red-hat 7.1 need some patch update in order ...
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212 views

yum install net-snmp-utils -> No package available

I want to install SNMP packages (snmpget, snmpwalk etc.) on RHEL 6 but I receive "No package available" error: [root@RHEL-9220 ~]# yum -y install net-snmp net-snmp-utils Loaded plugins: aliases, ...
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22 views

RH : Unable to change permissions on a mounted FS

I've got a mounted CIFS share on a Red Hat folder where I can't change the permissions. I have some others shares where everything is working fine but for this one, I can't change the permissions. ...
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8 views

How to permanently set a password for ipaserver client accounts

I want to setup a password for RHEL/Centos ipaserver client accounts but it seems I have to keep manually resting it on the ipaserver host. Is there a way to persistently set it?
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34 views

failure at starting on postgresql

I installed a postgresql database on Redhat 7.1 and I decided to move the database on a ISCSI device (LUN) inside a logical volume, mounted at starting of the machine (xfs formatted). The mounting ...
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47 views

Downgrade libxml2 on RedHat 6.7

In this case we have two servers with different version of RedHat: 6.6 and 6.7. The libxml2 version is: [root@Redhat_6.6 ~]$ rpm -qa |grep -i libxml libxml2-python-2.7.6-17.el6_6.1.x86_64 ...