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

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HOWTO: Fix “Cannot parse sensitivity level in s0” error when attempting to start a KVM VM after a major OS upgrade

I have a Lenovo ThinkPad T430 running Red Hat Enterprise Linux 6.7 with kernel 2.6.32-573.8.1.el6.x86_64. This is a work computer and my corporate policy states that I must keep my operating system up ...
2
votes
1answer
496 views

Send Logs to multiple syslog servers

Previously we were using one Logging server. But now we have added one extra Logging server which will also be storing logs received from client . I need to know how to add these two Syslog servers on ...
2
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2answers
211 views

Compiling Octave 4 with OpenGL .. X11 configure script linking error

I want compile Octave 4 with OpenGL/GUI support but don't know which packages to install on RHEL/CentOS system. I only get warning: configure: WARNING: OpenGL libs (GL and GLU) not found -- disabling ...
2
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3answers
93 views

What does it mean a ! before the username field in /etc/passwd?

After doing some googling I could not find why in the /etc/passwd shows a ! at the beginning of the line. It looks like this: !user:x:0:0:user:/home/user:/bin/bash any ideas? my only guess is ...
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2answers
2k views

NFS servers and firewalld

I haven't found a slam-dunk document on this, so let's start one. On a CentOS 7.1 host, I have gone through the linuxconfig HOW-TO, including the firewall-cmd entries, and I have an exportable ...
2
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1answer
664 views

LVM filesystem is full, cannot update system amongst other things

I am running a RHEL 7 server with a license from my university. I am running it on a bare metal server in a local place on my university. I originally installed RHEL 7 with LVM on my hard drive (there ...
0
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1answer
322 views

Unable to install mod_pagespeed on Apache 2.4

I have installed Apache 2.4 on the Red Hat Enterprise Linux Server release 6.7 (Santiago) by following these steps Step1 cd /etc/yum.repos.d/ wget ...
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2answers
69 views

Keeping CentOS up to date in a flexible way without giving out root credentials?

Title was "Running yum update && yum upgrade without root-privileges?" I want to allow an unprivileged user to start a system update on a RHEL-based system (CentOS 7). yum-cron is not an ...
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2answers
40 views

Only print filepath,without filename [duplicate]

The find command find /MOS -name "001.txt" The print /MOS/XNF/N01/001.txt My questions Which option could only print the filepath,without the filename ? The print /MOS/XNF/N01/
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2answers
36 views

Rsync two “filepath” found by find commands [closed]

Original file /001day/backup/001m/name_test_v1.txt Destination file /001date/003m/name_test_v12.txt Method 1 rsync -av --progress /001day/backup/001m/ /001date/003m/ Method 2 ...
0
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1answer
69 views

Problems with qorum device on Cluster Suite

I've built a 2 nodes ha-cluster with Cluster Suite on RH6.5; the configuration is very simple: 1 lvm shared volume, 1 fs over the shared volume and 1 vip. I've a failover domain and I'm using a scsi ...
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2answers
170 views

find and print file path, without filename

Please check the below awk '/SOURCE/ {print $3}' /MAC/Delete_Name.txt | while IFS= read -r file; do find /OS/ -iname "$file.pdf" ; done This results in output like this: ...
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0answers
16 views

Cassandra nodes down in DataStax

I'm new in DataStax dashboard Configuration but i have critical requirement. I configured dataStax dashboard and i added all nodes. After that when i am clicking on my Cassandra cluster it's ...
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1answer
65 views

Yum update error on RedHat 5

since one of our guys tried installing Dell OpenManage on our RedHat server we have been getting this error when trying to update it: # yum update Loaded plugins: dellsysid, rhnplugin, security ...
3
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1answer
136 views

kong needs to start after cassandra, but cassandra is slow to actually accept connections so kong fails to start

I am setting up kong as an API gateway. It requires cassandra. I am using Centos 7, and I created systemd unit file for each with kong starting after cassandra, and requiring cassandra. Here are my ...
0
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1answer
296 views

How to upgrade Vim 7.2 to 7.4 latest on Red Hat 6.6 the easiest way? [duplicate]

I'm a Vim user, and usually I just install vim via a one liner "apt-get install vim", but for red hat how can I update the 7.2 version to 7.4 with a one liner? I googled it and many places tell me to ...
2
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1answer
186 views

RHEL6 Unable to download kickstart file

In our lab we have a set of scripts that automatically configure a kickstart installation for RHEL5 on HP ProLiant DL380p Gen8. Based on data from several configuration files, it does the following ...
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0answers
17 views

Installing a file as part of making an ISO installer

I am sure that this is answered somewhere else on this board, but I have searched high and low and have been unable to find an answer. I am building a custom ISO installer and everything is going ...
1
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1answer
29 views

Apache status connecting to wrong host

I'm trying to get the status of my Apache server with the ./apachectl status command. I get the following in stdout: Looking up 127.0.0.1:30240 Making HTTP connection to 127.0.0.1:30240 Alert!: ...
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0answers
123 views

Mounting Sharepoint folders in Linux

We are using DAVfs to load a Share Point folder in our environment. We installed both neon and davfs libraries to try mounting. On mounting, we are running into the below. Any suggestions? Could not ...
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0answers
29 views

realmd vs authconfig

What is the difference in functionality between realmd and authconfig? (using fedora 22) What is the correct way to connect to an active directory realm with using Kerberos and using SSSD server?
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2answers
100 views

Docker bash: fork: Cannot allocate memory

I am trying to create 4000+ docker containers via separate demons (To avoid the barrier of 1023 veth’s per bridge). But I am getting bash: fork: Cannot allocate memory error around 1800.I have ...
1
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1answer
447 views

How can I get “RHEL 7.0 vmlinux” file?

I want to use crash on RHEL 7.0. Since crash needs vmlinux file, but I can't find it on /boot folder, only vmlinuxz: ...... vmlinuz-0-rescue-7c50639231494746b5dffc0a1ff84727 ...
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0answers
34 views

Apache 404 error: Rewrite rules for Apache

Getting the following 404 not found as shown below in access.log file of httpd while trying to access the following URL:www.example.com/support . This was created using the network multisite feature ...
2
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1answer
59 views

Init scripts. Distinction of booting and starting activity

I have some script that runs and shuts down some service placed into /etc/init.d. It has symbolic link into /etc/rc5.d added with chkconfig for autolaunch on booting. Hence it starts on boot and can ...
0
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1answer
108 views

Creating arbitrary directory in kickstart before %post

One of the non-OS packages that I need to install via kickstart config requires a pre-existing (non-standard) directory, is there a way to create arbitrary directory before %post in kickstart? ...
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0answers
17 views

Desktop top panel displays the icon of active program with wrong label

This probably is a new feature of RHEL7. It put an icon and a label of active program on the top panel. But when running our company's application, the label is not the right name of the program. Is ...
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0answers
104 views

'yum' command fails with 'TypeError: rpmdb open failed' in Red Hat 5.2

I'm unable to run yum command on my Linux machine. I'm getting the following errors: dispsim:~$ yum Failed to set locale, defaulting to C Loading "rhnplugin" plugin Loading "security" plugin error: ...
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0answers
123 views

How to create an SELinux exception for individual files

I use a monitoring tool and on one of my systems that is checked remotely, it calls up a script, which in turn runs systemctl to check the status of a service. This was not working until I put SELinux ...
1
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1answer
222 views

Tomcat Homepage (localhost) doesn't showup

Assuming, I've successfully installed Apache tomcat in RHEL 7 followed almost similar instructions in here, except that I've tomcat8 user, assigned permissions and generating a keytool as ...
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2answers
199 views

Set Path for all Users (Login and Non-login Shells)

Ok. So, I'm used to Ubuntu and CentOS more than redhat, so I'm hoping there's some obvious solution to this that I'm missing. I've installed Anaconda (Python). I've placed it in: /opt/anaconda3 I ...
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30 views

Install RHEL 6 to a remote drive (NFS root)

I need to be able to install RHEL 6 to a network drive. In more modern operating systems such as RHEL 7 this is an option. Unfortunately for me I have to use RHEL 6 (actually Scientific Linux 6.6 ...
1
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1answer
78 views

What does Requires: Python(package) do for RHEL spec files?

I'm packaging some Python packages currently without RPMs, and some of those depend on others that I'm packaging. While packaging I noticed a format where people do: Require: python(pkg-name), but ...
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0answers
84 views

Are docker container security limits limited by the host's security limits?

Lets say that I have a host which has max locked memory set to 64kb: [root@host]# ulimit -l 64 and a docker container running in that host with no limits: [root@container]# ulimit -l ...
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1k views

Unable to start vncserver in RHEL 7

Following the instructions from Redhat documentation (TigerVNC), I've installed VNCserver in RHEL 7. When I try to start the vncserver service, it returns an error #systemctl start ...
0
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1answer
49 views

Remove header in journalctl results

Sample Command run on RHEL 7: $ journalctl -n1 -- Logs begin at Tue 2015-09-29 17:44:38 PDT, end at Thu 2015-10-22 10:51:35 PDT. -- Oct 22 10:46:00 linuxdev sshd[9730]: pam_unix(sshd:session): ...
2
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0answers
19 views

RHEL / SELinux - Apache unable to write to a directory it can write to [duplicate]

I have a RHEL 7 machine running an Apache web server with multiple virtual hosts on it. I've recently run into an issue where I am unable to upload media, e.g. images / pictures / video, to my machine ...
1
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1answer
51 views

Disk space in windows not representing actual qcow2 image size

The disk space shown in Windows running in KVM does not represent the actual disk space available for the qcow2 disk image. The Windows Management Console shows there is 100 GB for the drive, but ...
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2answers
61 views

How to monitor the output as the process runs on a RedHat Linux server?

You need to run a process on a RedHat Linux server that takes a little while to run. You want to monitor the output as the process runs but need to guarantee that the process won't terminate if you ...
0
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0answers
71 views

Kickstart: --percent option along with --maxsize in RHEL 7.1

I have a kickstart to automatically create LVs based on a percentage instead of a fixed size. Currently, my kickstart is working as expected, but in installations with large HDs the LVs sizes are ...
1
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1answer
133 views

Unknown TCP Service when installing stunnel

I am trying to install stunnel on a CentOS 7 server, but I am getting an Unknown TCP Service error. How can I resolve this error to complete the stunnel installation? I installed and tested ...
1
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1answer
126 views

enabling smtp on port 465 and imap on port 993 for webapps running on centos 7

A CentOS 7 development server is used for prototyping webapps that send and receive email using JavaMail to connect with a remote mail server elsewhere on the internet. The remote mail server uses ...
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0answers
111 views

Redhat 7.1 Udev Rules changes SYMLINK+ And Name

I am tying to install Oracle ASM on RHEL 7.1, for that trying to configure Udev rules. I have noticed there are is new attribute in udev rules SYMLINK+ which seems to be replacement of NAME ...
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2answers
27 views

java installation in RHEL

while installing java in redhat i'm facing some problems..i've attached the screen print ..if anyone could help me with it it would be appreciable..thank u.. i unzipped the file using tar command ...
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103 views

screen resolution woes on RH 7 running Xorg, which has no Xconfigurator (which seems only for XFree86)

I have a dell precision m6800 laptop that is experiencing stubborn low screen resolution problems with red hat 7. The funny thing is I installed RH 7 with no BIOS raid configured and I got the ...
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1answer
818 views

how do I attach devices to connections using nmcli?

An installation of CentOS 7 has two connections and three devices. How can I attach the device ens7 to the connection my-bridge? And how can I attach the device eth0 to the connection my-eth1? ...
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1answer
90 views

how to update postgres.conf path after relocating it from data directory

I'm installing a Postgresql-9.4 HA environment in RHEL 7, when I initialize postgres db - it creates a data directory and within the data directory goes postgresql.conf & pg_hba.conf files. Here, ...
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1answer
50 views

Gracefully Handle Losing Connection Exported X Display

I am exporting a several GUIs across a network using X11, I start the GUIs by SSHing into the server with the -X option and running the executable. If the remote machine is abruptly shutdown or the ...
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1answer
433 views

how do I use nmcli to add an IP-address to an interface?

On a CentOS 7 virtual machine, I have an interface called ens7, as shown here: [root@localhost ~]# nmcli con show NAME UUID TYPE DEVICE ...
2
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2answers
191 views

why lscpu CPU MHz != dmidecode Current Speed

In the example below i try to obtain my CPU (Xeon E5-2690 v3) current speed using two different commands, but they report different values - 2.6 Ghz and 3.1 GHz: [root@localhost]# lscpu | grep MHz ...