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

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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
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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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 ...
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43 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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26 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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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
26 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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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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46 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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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 ...
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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 ...
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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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11 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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13 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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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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3answers
60 views

redhat + how to download rpm from red-hat site

I need to down load the following rpm from red-hat formal site kernel-debuginfo-3.10.0-327.10.1.el7.x86_64 is it possible to use the following rpm command for download ? rpm --import ...
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24 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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1answer
68 views

How to make “Ctrl + L” to clear screen in ksh under Red hat linux?

I am using putty to connect to the Red hat linux server. My shell under linux in Korn shell. I am used to clearing screen with the "Ctrl + l " combination. Some how this combination is not working ...
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1answer
85 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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1answer
40 views

How to check if a directory exists I don't know the exact name of it with a bash script

I need to check if a directory already exists, in this case the one with a number suffix, and I won't know the exact number. Example directories to search: /usr/ names names.backup names.20160316 ...
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15 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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2answers
90 views

What's the best way to edit a file with a bash script?

Using /bin/bash on RHEL 5.8 and I want to automate editing a file. I need the script to search the file and replace a line in the file. Line example: Other line Current date 01121990 Other line ...
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10 views

How to run kvm virtual machine with console? [duplicate]

When i run virsh start vm_name it boots in background. I want to access the grub while vm is booting. Is this possible to run virsh start vm_name with some kind of console? (I am using RHEL 6.5 on ...
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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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1answer
44 views

Install GCC 4.8+ on rhel x86_64 workstation 6

I want to install gcc 4.8+, preferrably 4.9 on my Red Hat Enterprise Linux Workstation release 6.7 (santiago) I have a subscription to rhn-classic. I tried installing devtoolset as given in ...
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38 views

Linux + why dropping issue displayed from ifconfig but not from ethtool?

we have Linux VM red hat 7.2 version with two LAN interfaces the Linux machines are ruining on ESXi - 5.5.0 and we have very strange issue , the conflict is between the ifconfig command to ethtool ...
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1answer
40 views

Saving RPMs installed by dnf

I've got a question about yum. When I upgrade my system using dnf, it downloads packages from the Web. Can I set dnf configuration so that I could save rpm files for later use, with the same system ...
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1answer
50 views

Puppet: Forcing user to change his password at next login

I am using `users' resource to create unix accounts and then set a default password. For this I have written the following manifest . node 'node2.example.com','node3.example.com'{ user { 'askar': ...
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1answer
42 views

Restrict login via user group in access.conf

I have been working on getting /etc/security/access.conf to work as expected and so far every user can still login. Details are below. I added the following line to /etc/pam.d/login account ...
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1answer
24 views

Executing command for sendmail not working

Good Day, I'm still new in Linux CLI and I'm using RHEL 6. I'm executing command for sending email via terminal. $ cat log.txt | mail -s "Logs" myemail@e.mail.com Hosted by outlook365 When I try ...
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2answers
169 views

How can I upgrade OpenSSL version to openssl-1.0.1s in RHEL 5 machine?

My current openssl version is openSSL 0.9.8e-fips-rhel5. I want to upgrade this to openssl-1.0.1s. The yum update openssl will not work here. I removed openssl binaries from following path ...
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1answer
79 views

yum clean all gives multiple string errors

When I am trying to connect instance to Satellite Server it's failing. I tried to perform basic system updates and tried running yum clean all. However, I am getting following lines: Traceback (most ...
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1answer
26 views

Can not build own container [closed]

How to build redhat 7.1 container ? I used, FROM redhat:7.1 yum install httpd and, below error I have to face. Sending build context to Docker daemon 2.56 kB Step 0 : FROM redhat:7 Trying to ...
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23 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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1answer
37 views

After reboot host goes into maintenance mode as I've the remote filesystems on LVM stack created over iSCSI LUNs - RHEL 7.x

On RHEL 7.x I observe that the remote filesystems (SAN) does not allow host to come up after reboot. It enters maintenance mode and I've to comment out the entries in /etc/fstab to bring the host up ...
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2answers
25 views

Install packages locally (without root account)

I am working with Red Hat Enterprise Linux Server release 5.9. As it is, I do not have any root privileges and I also do not have the option of getting new packages installed by the sysadmin. While ...
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69 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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1answer
47 views

How to fix “Failed to mount root filesystem - failed to open /dev/console” in RedHat after Cloning Disk

After cloning my HDD by Norton Ghost to a new one, I moved the new disk to new PC (with different hardware). In the new PC , I see this message at boot, as you see in this screenshot: What exactly ...
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50 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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1answer
107 views

Installing Docker on RedHat fails with 403 forbidden

I'm trying to install Docker on a "Hat Enterprise Linux Server release 7.2 (Maipo)" according to these instructions but sudo yum install docker-engine fails with: ...
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0answers
139 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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2answers
43 views

RHEL: FDE w/o password - boot from key on partition

I'm trying to accomplish encrypting my OS w/ LVM on RHEL 7.2 and have it boot without entering a password by using a key on an unencrypted partition. LV VG Attr LSize Pool Origin Data% ...
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1answer
16 views

Applying hosts resource in puppet to update /etc/hosts

I am new to puppet, trying with the host resource to update /etc/hosts on node2.example.com with the below entry master.example.com 10.134.39.245 node2.example.com 10.134.39.246 For ...
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Red Hat vNIC(Virtual NIC) association to physical NIC

I have a virtual network interface named bond0.700 connected to a vlan (ID 700), and 6 physical NIC (eth0 to 5) on RHEL 5.5. Hint : [root@rhle ~]$ cd /sys/devices/virtual/net [root@rhle net]$ ls ...
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1answer
34 views

NetworkManager not creating in-memory connections

I'm comparing Centos7 and Rhel 7.2 installations. rhel/centos installer creates simple network-scripts for existing adapters. They don't start automatically. NetworkManager sees them with names ...
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1answer
31 views

RHEL7 “Too many authentication failures for”, MaxAuthTries has no effect

I'm using Kitty (putty clone) and Keepass agent (similar to pagent). Keepass agent contains 5 ssh keys. This setup works fine with all linux boxes I've encountered so far, connection to our new ...
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2answers
31 views

Sendmail : save email into a file

I use sendmail to manage the emails of my website. I'm testing features which require to send emails, and I'd like to receive these emails in a local directory of my server, store them as text files ...
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3answers
51 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 ...