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

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How to unmount a nfs or ntfs when a NAS is not reachable?

I have this environemnt: Redhatlinux Enterprise on fstab a NAS mounted as NFS yyyy.xxx.com:/vol/yyyy_nec_nosnap12/prod_data on /prod_data type nfs (rw,bg,addr=x.y.z.w) when the NAS doesn't reply ...
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1answer
28 views

why resolv.conf is changing

I have a very strange issue in my Linux machine - Red Hat 6.7 version when I update my resolv.conf file as the following: options attempts:2 options timeout:1 search usa.Pe.corp ...
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1answer
26 views

linux redhat + change time from UTC to GMT+X

how to change the time from UTC to GMT+2 my current date is UTC as the following 20:23:48 root@linux-test01:~ # date Sat Apr 16 20:23:52 UTC 2016 and I want to change it from UTC to GMT+2
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2answers
25 views

RHEL Network Interface not restarting

RHEL 5.11 I run the restart command: /etc/init.d/networking restart Then it just sits there until I have to force quit: 15:09:11 # /etc/init.d/network restart Shutting down interface bond0: ...
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2answers
2k views

How Do I use autofs to map a USB drive by its ID?

Goal I have a USB drive -- let's say the drive's ID is /dev/disk/by-id/thediskid I would like to mount the drive -- by ID -- to a folder (let's call it /MOUNT_FOLDER) Question What is the best ...
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0answers
21 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
3
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1answer
898 views

Install 32-bit library packages on 64-bit rhel 6.2 during installation of os

I want full installation of rhel-server-6.2-x86_64. Within this setup, I want to install some of 32bit glibc packages before completion of installation, which already available in ...
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1answer
42 views

What version of CentOS is equivalent to Red Hat 9.x?

I want to use CentOS. I was used to Red Hat 9.x but now I'd like to use CentOS. But I don't know what CentOS version is equivalent to Red Hat 9.x?
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2answers
809 views

Why does “man” command disappear?

I find man command disappears on my RHEL7: # man ls bash: man: command not found... # which man /usr/bin/which: no man in ...
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6answers
9k views

Does AIX really beat Red Hat Enterprise Linux? [closed]

Our company plan to upgrade our servers, and at the same, we would use AIX over Red Hat Enterprise Linux. I asked my boss the reason of choosing AIX, he said it is because AIX is more powerful. I ...
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0answers
174 views

Limit system processes using cgroups

My server runs several dozens of processes that are not in my control (mostly monitoring software). According to my application logs, sometimes some of the third party processes try to allocate too ...
5
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1answer
878 views

How can I make the eth1 up and always available for remote access, where eth0 will be used for host to host IPSec VPN?

I am running Amazon EC2 instance with Red hat enterprise linux, where I have two network interface. Now: eth0 is currently active having public ip where I am remotely logged in via SSH, to ...
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4answers
7k views

What's the difference between a hard links and copied files?

My understanding is that hard links include a copy of the original file and that I could delete a hard-linked file in one directory, and it would still exist in the other directory. If that's the ...
0
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2answers
32 views

remove log files

I have a folder which in turn contain multiple sub-folders. All of these sub folders have a log folder. How to clear all the log files alone from all the log folders in these sub-directories using a ...
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0answers
24 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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0answers
48 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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2answers
1k views

Installation of Pacemaker Corosync on RHEL Server 6.6

I was trying to install Corosync and Cman using yum install -y pacemaker cman pcs ccs resource-agents This works fine on CentOS 6.3. Tried the same on Red Hat Enterprise Linux Server 6.6 and ran ...
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0answers
37 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 ...
3
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1answer
56 views

Why can't my servers talk to each other over direct ethernet connection?

I have two servers running RHEL 7.2. Each have 2 NICs. One NIC talks to a switch, and other is a direct connection between the two servers. One of the servers will be an NFS server, and the second ...
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0answers
40 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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0answers
12 views

Invalid script entry point, A callable suffix is required

I'm trying to install btrfs-sxbackup on RHEL7. It says: Installation: pip install btrfs-sxbackup Required: python3 I installed python34 from epel. There's no pip for it, so I installed it, ...
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2answers
1k views

Authconfig contiously rewriting the /etc/sysconfig/authconfig file, messing up Puppet run

I have been using this LDAP module for a long time in my Puppet environment. The module uploads these files to the RHEL-servers: /etc/openldap/openldap.conf /etc/pam_ldap.conf /etc/nsswitch.conf ...
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1answer
27 views

TeXstudio rpm install: QT dependencies (e.g. libQtGui.so.4)

I'm trying to install TeXstudio on a Scientific Linux 7.2 machine with an rpm. My problem is, that I'm missing the following dependencies: # rpm -ivh texstudio-qt4-2.10.8-6.1.x86_64.rpm warning: ...
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1answer
1k 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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1answer
43 views

Ctrl + Alt + Del and F keys Using Telnet

I only have serial access to a server, and I am trying to access its BIOS using telnet (it's not a direct serial, but a remote serial connection). My telnet certainly reaches the server, as I can ...
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1answer
1k views

Install RHEL 5.7S on machine with 4TB disks

I'm getting errors about GPT when installing OS using kickstart. The Dell R720 has 8x 600GB SAS. I can't figure out what to configure in BIOS and kickstart file. In BIOS, there're boot options of ...
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0answers
20 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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31 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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1answer
1k views

Is not a valid path to the kernel headers?

Host - Windows 10 VMware - 11.1.2 Guest - CentOS 7 I installed kernel-headers using yum since during the installation of vmware-tools I get a message "Searching for a valid kernel header path... ...
0
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1answer
22 views

Cannot mount newly created Logical Volume

I try to create a Logical Volume under an existing Volume Group but I cannot mount the new LV due to error: "Bad magic number in super-block while trying to open": [root@host-xxxx ~]# df -h ...
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3answers
8k views

How to access the Local FTP YUM repo from client Machine

I setup the FTP server on Machine A 192.168.1.105 and created the YUM repo. And placed following contents in it. #vi rhel-localftp.repo [rhel-localftp.rep] name=bla bla bla ...
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0answers
25 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 ...
1
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1answer
293 views

Why are --older-than and --younger-than killall options missing in RHEL/CentOS?

I've experienced this issue in cleaning up scripts written by developer who were writing for Ubuntu systems, as well as ServerFault questions like this. Is there any reason the -o, -y (--older-than ...
2
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1answer
38 views

Blocking a specific external IP:Port connection in RedHat?

I know that in RedHat, in the IP tables I can block incoming connections to a local port. I can also block connections from a specific IP. But is it possible to block a connection from a specific IP ...
0
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1answer
66 views

yum + how to install VIA internet and not from local repositories

I have Linux red-hat machine version 7.2 I am using local repositories on the server - starmachine in order to install by yum root@test:/etc/yum.repos.d # more redhat.repo # # Certificate-Based ...
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1answer
825 views

Yum Corrupted on RHEL 6

I really need help. I am encountering the issue with my yum command. It seems to be exactly the same as the issue described on this site, Yum corrupted on CentOS 6.2, Problem importing one the python ...
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3answers
17k views

What does eno mean in network interface name 'eno16777736' for CentOS 7 or RHEL 7?

Under consistent network device naming scheme, what does 'eno' stand for in network interface name 'eno16777736' for CentOS 7 or RHEL 7?
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17 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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1answer
31 views

aureport interpretting report output

I have ran the following command on my RHEL 6 system to produce an audit report aureport --login --summary -i that produces the following output Login Summary Report ============================ ...
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1answer
60 views

Redhat Linux Server : Plone installation

Unable to install any package using apt-get installer it shows sudo: apt-get: command not found -How to install apt-get package over server ? -I am trying to install Plone over my server so by ...
0
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1answer
25 views

Delete files between two dates

I have a folder in which there are very old files. It contains files since 2009 and they are dump files with error log. What I want to know is if it is possible to delete the files between let's say ...
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0answers
22 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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3answers
49 views

get notification when Red Hat releases update/patch for $PACKAGE

I wish to get email notifications when RedHat releases an update/patch for only certain packages. # rpm -qa | grep maria mariadb-5.5.41-2.el7_0.x86_64 mariadb-galera-common-5.5.41-2.el7ost.x86_64 ...
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2answers
6k views

unable to search and install dos2unix pakage

I have RHEL 6 , 64 bit OS. I need to istall dos2unix for this version. I could not find rpm file for RHEL 6 86_64 bit , so I tried like this: [root@xilinx acme]# yum search dos2unix Loaded plugins: ...
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1answer
83 views

Video drivers problem only when tunneling X through ssh

I am a reluctant sysadmin who inherited the responsibility for configuring a RHEL 6.7 server (operating inside a VMware virtual machine) to replace an old physical server. On this new server, certain ...
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44 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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2answers
2k views

Redhat 7 DNS Bind Failed to restart

I am getting Error while Restarting the Named.service in Red-hat 7 Here is my Lab Status and all the Command. Configure DNS in REDHAT 7 DNS Name p1.linux.com IP address 192.168.1.1/24 N/W ID ...
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2answers
7k views

RHEL 6.4: Openssl 1.0.0-27 libcrypto and libssl missing

I am trying to install znc IRC bouncer, which needs openssl libraries: Error: Package: znc-1.4-1.el6.x86_64 (epel) Requires: libcrypto.so.10(libcrypto.so.10)(64bit) Error: Package: ...
0
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1answer
86 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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1answer
936 views

Installation of QEMU, GCC for ARM in RHEL

We are setting up a lab which has the QEMU system to emulate an ARM processor and run assembly programs. The lab is currently setup with the host operating system as Ubuntu. We are migrating the lab ...