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Questions tagged [rhel]

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

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after a p2v conversion I have kernel panic in my redhat 5

I did a p2v in my linux 5 redhat machine to vmware, now I am getting kernel panic error, before it could not find the VolGroup00 then i recreate the initdr, now i am getting this error: I can not not ...
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1answer
14 views

glibc-2.14 compatibility

I'm developing an python application for my company on a RHEL 7.4, development environment. In my prod env, I'm running a RHEL 6.8 (soon to be upgraded). The problem is that I ran my application on ...
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1answer
23 views

Redhat 7 : Where to find LFTP 4.8.3

I have Red Hat 7 on the server and LFTP 4.4.8. I had to use a CentOS RPM to upgrade to LFTP 4.4.8. I need to upgrade to a more recent version because some option are not available in LFTP 4.4.8. ...
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1answer
15 views

How can i create a /tmp partition

i'm trying to intall RHEL Linux Server 7.4 using VMware through a dvd.iso i want to create a partition for the /tmp during the installation, knowing that the graphical interface that permit ...
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10 views

Pacemaker cluster service can't start properly Couldn't mount filesystem

I have 3 nodes MySQL cluster on RHEL 7.5 with DRBD, Pacemaker and after start cluster getting following error. How can I overcome ? [root@db1 ~]# pcs status Cluster name: mysql_cluster Stack: ...
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16 views

In what circumstances i cannot create setuid for file and stickybit for dir? [duplicate]

I am running with Linux RHEL 7. I am trying to understand why I am not able to create setuid for file and sticky bit for directory. I am trying to create my own dir with sticky bit and then some ...
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12 views

Install flatpak on Redhat

All the existing links on the internet talk about how to install flatpak, and then how to add the flathub repo and install apps. For me, this command doesn't work: $ sudo yum install flatpak Loaded ...
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2answers
141 views

Installing docker CE on redhat 7

I am trying to install dockerce on redhat7 by following the below steps yum update -y yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo yum install docker-ce -...
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14 views

RPM making error from

When I am building drbd-utils-9.5.0 rpms from source offline and I am getting error "No such file or directory" as follows. So how can I build rpms offline resolving the issue ? [root@db1 drbd-...
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28 views

How can I add/install SSL certificate on RedHat [on hold]

I am struggling with installing crt file on my RedHat machine. I got certificate file, which I want to add/install, but I am not sure how to do it and probably I am misunderstanding something, because ...
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1answer
27 views

How can I unload a filesystem module in a RHEL 7 server in order to harden it?

I'm trying to harden my RHEL Linux server 7 according to the CIS guidelines, so I want to unload the cramfs. I typed the following command: modprobe -n -v cramfs and I got the following answer: ...
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I have installed redhat but unable to install any application due to yum

I have installed redhat, but I am trying to install applications but red hat is not allowing it due to yum. I am not getting it. What should I do so that I can install various applications?
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22 views

How can I find what a process is trying to watch using strace, lsof, and fdinfo?

I have a process (the NewRelic infra agent) that is hung on a RHEL 7, xfs filesystem host. I'm thinking that it's trying to watch a file or maybe a socket that another process already has in use. ...
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0answers
8 views

Iostat report for a time period [on hold]

How to get iostat report for the whole month at a particular time in redhat server? I have tried sar -d . But I want for the whole month at 8 pm daily.
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27 views

How to display last 48 hour memory history

Is there any way to find out memory history via Linux terminal? I do not have any connections to the physical host or any other monitoring tools like zabbix etc... One of the Database service was ...
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0answers
39 views

How to figure out what fields are available for a command / navigating man pages?

I'm studying how to review/query journal entries for RHEL8 using the journalctl command. In my book, I came across this section listing the fields that can be used for querying: _COMM The name of ...
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15 views

Adding host (VM) to Red Hat Satellite 6.4 throws error

When I try to run bootstrap command I get below error: RUNNING], [2019-05-13 13:58:15], [Calling Foreman API to create domain mytestdomain.com associated with the org & location] An error occured:...
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1answer
42 views

auto mount by service + service not mount the folder automatically

we create the following service on redhat version 7.2 more nfsshare.mount [Unit] Description=nfs mount script Requires=network-online.target After=network-online.service [Mount] What=...
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1answer
56 views

how to see the contents in the RAM when a program is executed in Linux?

I want to see the contents of a program being stored in RAM when the program is executed . I have used cat /proc/[pid]/meminfo but it gave only address and permission mode details . I also tried ...
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1answer
28 views

How can I run rpm and yum on RHEL?

I'm trying to do some debugging on my remote server via SSH. I need to install a few packages before I begin. The provider I'm using has Red Hat Linux on their servers. The problem I'm having is that ...
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1answer
25 views

Automount nfs on redhat 7.2 not works

I have the following nfd share folder on my linux client ( redhat 7.2 ) master1:/nfs 41932800 6601728 35331072 16% /nfsshare we decided to use the service auto fs in case this share ...
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1answer
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RHEL 7 multi-user.target disables Wi-Fi

Every time I set my system target to multi-user.target, I lose connection to Wi-Fi and thus can't control my machine via ssh after a reboot, and when I go to /etc/sysconfig/network-scripts, I don't ...
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1answer
37 views

move system partitions to different physical drive with different filesystem

My RHEL7 system is configured like this: Filesystem Size Used Avail Use% Mounted on /dev/mapper/rhel-root 50G 18G 33G 36% / /dev/mapper/rhel-home 504G 147G 357G 30% /home /...
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1answer
19 views

Fencing of Redhat cluster 7 on VirtualBox

I am trying to create a 3 node Redhat Cluster 7 on Oracle VirtualBox VMs hosted on Windows Server 2012 R2. What agent can I use for fencing? How do I go about it? Note : I am creating a cluster for ...
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24 views

How to download group packages “Server with GUI”?

I was trying to follow this to download all packages for "Server with GUI". Am I doing something wrong? OS: RHEL 7.5 [root@test rpms]# repoquery --qf=%{name} -g --list --grouppkgs=all "Server with ...
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0answers
32 views

Maven application runs alone but not with systemd

I am trying to run Sphinx4-Http-server on RHEL. If I am in the directory /home/alex/Sphinx4-HTTP-server and run the command /home/alex/apache-maven-3.6.1/bin/mvn exec:java -Dexec.mainClass="org.jitsi....
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7 views

Freshclam can't pull updates from Azure Storage blob

I have a public storage blob I host ClamAV definitions updates on - there is no access key required as it's public access. I can download the updates just fine through wget and chrome, however I get ...
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1answer
34 views

`rpm -q` and `yum` break after `rpm --rebuild`

In order to repair the RPM database, I ran rpm --rebuild. Afterward, I cannot find any package using rpm -qa, and yum does not work,as the logs below show. [root@local03 ~]# yum Traceback (most ...
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0answers
15 views

Move a mountpoint into a new lv without data loss RHEL6

RHEL6. VMware VM. I want to move /data and all the files it contains into a new lv in existing vg. Currently: /data is mapped directly onto sdc1 and is 100% full /dev/sdc1 315G 299G ...
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1answer
38 views

Calculate the time difference between two columns in time format hh:mm:ss

I want the time difference between column 5 & column 4 My Input: DATE TIMESTAMP ID START TIME END TIME 2019-04-05 13:57:19 1607 13:06:42 13:07:12 2019-04-05 13:58:00 2327 13:57:26 ...
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1answer
42 views

Connecting to Internet - RHEL 7 Gnome on BL465c Gen8 in HP c7000

I am trying to connect to the internet on a blade server running RHEL7 with Gnome. I should preface with stating I have effectively no experience with RHEL. I can connect to the blade OS through iLO ...
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1answer
107 views

RHCE Study Lab: KVM networking and ping issues

I'm trying to setup an RHCE study lab per Michael Jang's RHCSA/RHCE setup guide. I've followed the guide in the book to the dot, though in my opinion a lot of information is missing (step by step ...
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21 views

Why the distr instmodsh cannot list the installed distr/vendor_perl modules ?

We find such a phenomenon with the instmodsh, that is, it can only list the installed CPAN modules ?! So why it cannot list the installed distr/vendor_perl modules though itself belongs to a distr ...
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1answer
41 views

Unable to install PIP on Linux

I am trying to install pip on my Linux environment, but it is not installing properly. Python version - 2.6.6 When I try to install pip using the following command, python setup.py install ...
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0answers
15 views

Red Hat 7 NOPASSWD for a specific script

Say I have a script called sayhi.sh at /usr/local/bin/ directory. And I have a user called tim who needs to run this script as sudo /usr/local/bin/sayhi.sh without the password. So I updated the /etc/...
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1answer
45 views

Added command(s) to .bashrc, how to apply to users retroactively?

I have a rhel 7 server that users will be connecting to, and I created ALL the users/groups then realize I needed to add a command to /etc/skel/.bashrc such that it executes upon login, but this doesn'...
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0answers
48 views

RH7 ksh wait not working

I have some ksh shell scripts that I ported from RedHat 4 to RH7. I have bar.ksh #!/bin/ksh # here I start another script foo.ksh args & # one process with a given set of args foo.ksh args & ...
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1answer
19 views

Is lsof part of default RHEL installation?

I am trying to find out if lsof is part of a typical RHEL installation. I see lsof mentioned in a RHEL page titled Common administrative commands in Red Hat Enterprise Linux 5, 6, 7, and 8 but I do ...
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1answer
27 views

Using a tool that can't find libssl 0.9.8 when I have openssl 1.0.2 for tool to work and receiving error

I am working with a tool(Netscout ASR) that uses a community string to access flow data in my network. I am using this tool on a rhel7 server that has: openssl version OpenSSL 1.0.2k-fips 26 Jan ...
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0answers
16 views

issues in Setting Up Zimbra Collaboration Suite (ZCS) on RHEL/CentOS 7/6

tried installing zimbra on linux and i get this at a stage of the installation ERROR: Installation can not proceeed. Please fix your /etc/hosts file to contain: 127.0.0.1 localhost.localdomain ...
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1answer
14 views

Permission Error with Fill Path Only

I have a script on a RHEL 7.x machine written in Python3. In testing this script I created a function which will append to a text file in the same directory. If I execute the script from the local ...
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2answers
33 views

Can I install both NTP server & NTP client on same machine (linux)?

Here's my use case : I have 2 independent networks & 3 servers. Server 1 & 2 are connected on Network 1 (172.24.xx.xxx) while Servers 2 & 3 are connected via network 2 (locally : 192.168....
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1answer
48 views

Is there a similar tool like Curl but is already included in Linux?

I'm not sure if there is a similar command/utility which comes along with Linux distro CentOs, Ubuntu and RedHat without installing Curl. Basically I'd like to do a command like below curl -H ...
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0answers
40 views

How do I forward particular logs under a directory using rsyslog?

Trying to froward following logs from /home/ddlog/ms/logs/execution_logs/_abc-xyz-ms_* to VMware vRealize Log Insight using rsyslog. For some reason that does not seem to be working. I have tried ...
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0answers
9 views

Install rt-test(cyclictest) and meet some problems?

I want to measure the real-time performance of a old customized RedHat Linux (RTOS) with the rt-test tool suite, and the RT RedHat Linux is not registered with RHN, so I can not install the rt-test ...
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1answer
96 views

Did Red Hat end the developer subscription program? [closed]

My Red Hat developer subscription ended yesterday. I'd like to know if Red Hat discontinued the program, because after following every single instruction on their site and contacting customer service ...
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1answer
31 views

Finding performance bottlenecks on Red Hat server hosting KVMs with QEMU?

As a side task I administer a RHEL 7 server used as an internal KVM host. Now it runs eight VMs which, but for one, are idle most of their time, or at least not doing anything at all resource ...
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0answers
25 views

ignore an ip in secure log

I have a server and a client, in which the client used to pass a data through ssh in the rate of 600+ per minute. which means 600+ ssh connections where established and closed in a minute. Because ...
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0answers
15 views

Truncated incorrect DOUBLE value: 'null'

When I am running the query in MySQL from Linux server I got the error i.e Truncated incorrect DOUBLE value: 'null' Same query run in MySQL from Windows server it was working. UPDATE ...
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1answer
24 views

Showing only relevant columns

I have the following command. (head -1 invoice.txt && sed '1d' invoice.txt |sort -rn -k4,4) |column -ts $'\t' |less -S head -1 prints the first line. sed "1d' removes the first line so ...