Questions tagged [redhat]

Red Hat is an open source technology solutions provider with offerings including Red Hat Enterprise Linux, open source applications, security and systems management, virtualization, Services Oriented Architecture (SOA) solutions, server and desktop operating systems, Java application software and services, and the JBoss Enterprise Middleware Suite. Please also consider whether or not the more specific RHEL5 or 6 tags might be appropriate as well.

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How to set HA LVM in RHEL 9 / Rocky Linux 9

I try to set HA LVM (active/passive) in Rocky Linux 9 for my cluster that have 2 nodes (node1 and node2). I'm using iSCSI shared storage to set HA LVM in this cluster. I set HA LVM with following ...
M. Fachrizal Utama's user avatar
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1 answer
340 views

How can I update php 8 on a linux server without internet access?

Operating System: Redhat 8.4 Internet access : no access to redhat server : ssl vpn Current php version : 7.4 Purpose: Make php version 8 How can I do that ?
Raafet Sword's user avatar
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0 answers
107 views

Nginx web page via browser i am unable to accessing

Hi i have an issue with Nginx web page. I am using Aws Amazon Linux 2 server i want to deploy react js frontend application on AWS ,i installed all prerequisites i e Node js,npm packages, Nginx after ...
Kotesh's user avatar
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1 vote
1 answer
59 views

Redhat Capsule servers Apache config file update suggestion

There are some vulnerability issues reported by a third party software. The issues are mostly related to Apache HTTP server Configuration files. What is the best approach to update the capsule (...
Prade's user avatar
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1 vote
1 answer
455 views

Add ipv6 to Read Hat 9 loopback interface

In a fresh created rhel9 VM the loopback interface doesn't include an IPv6 address but /etc/hosts includes ::1 entry for localhost [vagrant@el9-test-fd5843e6 ~]$ ip a 1: lo: <LOOPBACK,UP,LOWER_UP&...
José's user avatar
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1 answer
121 views

Linux md5 checksum issue

I have a directory in which thousands of directories are present. I need to get md5sum of only around 60 directories from this list of thousands of directories. How do I selectively run the md5 on a ...
Kushal Chaudhary's user avatar
1 vote
0 answers
533 views

PIP3 Install Failing on RHEL 8 with SSL BAD AUTHENTICATION TYPE

I am trying to install packages with PIP on a newly created RHEL 8 server, with FIPS enabled and running openssl 1.1.1k, and am getting an error about a bad dh value. pip3 install --trusted-host pypi....
awestover89's user avatar
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0 answers
217 views

A message '-bash: /dev/null: Permission denied' appears after linux login

I log in to redhat server 7.4 by putty. login as: john [email protected]'s password: Last login: Mon Sep 12 10:45:16 2022 from 172.24.7.200 -bash: /dev/null: Permission denied -bash: /dev/null: ...
user3637971's user avatar
2 votes
2 answers
509 views

Force deleted files on NFS server to be recycled instead

I have a RHEL 7.9 server I'm using as a file server. It exposes an XFS partition over NFS for clients to mount and use. I am willing to use a different filesystem than XFS if need be, but I cannot ...
tjlds's user avatar
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0 votes
1 answer
5k views

How to enable legacy ciphers in modern SSH client [duplicate]

Got a shiny new OL9 and I need to connect to some legacy servers, as in CentOS 5. The OL9 SSH client does not support the legacy ciphers that CentOS 5 supports: [opc@vm1 ~]$ ssh legacyServer Unable to ...
Emilio P's user avatar
2 votes
1 answer
642 views

RHEL 7.9 and OS compatibility with DELL server GEN 15 PowerEdge

we want to purchase the dell servers Gen 15 machines , total machines should be around 85 servers these servers should used for Hadoop cluster as data-node machines and the OS should be RHEL 7.9 ...
King David's user avatar
0 votes
1 answer
694 views

DIMM cards + what is the meaning of - Configured Clock Speed

we add the following DIMM card in our DELL server ( 16G memory ) , OS is RHEL 7.6 version as we can see the speed is - 2400MHz but the - Configured Clock Speed: is only 1866MHz so I guess that value ...
King David's user avatar
0 votes
1 answer
281 views

RedHat - Rsync files using SSH authentication via HTTP proxy

What it says on the tin. I've got a firewall I don't control, an HTTP proxy I also don't control, and need to rsync files through the web proxy. I have Googled this to death, but the only things that ...
OstermanA's user avatar
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1 vote
0 answers
382 views

rhel - cloud-init changes SSH config

We want to use cloud-init to resize the rootfs in our pipeline. The resize itself works fine, but it seems like the default cloud-init config (/etc/cloud.cfg) changes also other settings like SSH for ...
MSC's user avatar
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2 votes
1 answer
951 views

Install QEMU for Docker Buildx on Rocky Linux 8

I am preparing a Rocky Linux 8.6 system to run Docker Buildx for multi-architecture images. Ideally I'd like to have a host installation of QEMU and binfmt_misc (rather than one based on a Docker ...
Marcel Stör's user avatar
1 vote
1 answer
856 views

CIFS Mount Share: Permissions on one File Seemingly Corrupted

I have a multi VM Windows (Server 2019) solution, hosted in a datacentre, with services which require a Redis cache. Due to security concerns, the Windows fork of Redis is not allowable. Therefore, I ...
Luke's user avatar
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0 votes
1 answer
1k views

How to install .CER file for apache ssl certificate in RHEL

Recently I tried to install an SSL certificate for my RHEL 8 server. So, I sent .csr file to the Certification Authority (CA) and I received .cer file. Now, I am new to this so I don't know .cer file ...
ZMAX's user avatar
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0 votes
1 answer
247 views

How to have two applications accessing a shared drive without isci config or shared lun?

We have a 2-node cluster configured using red hat high availability (pacemaker) but without shared storage i.e. each of the node has its own disk /dev/sda and /dev/sdb. We are not allowed to configure ...
Linzynarcon's user avatar
4 votes
2 answers
5k views

RHEL 9 in Docker container on macOS: subscription-manager is disabled when running inside a container

I'm attempting to use RHEL 9 via the redhat/ubi9 Docker image, having redhat individual developer subscription. However, on attempt to use subscription-manager, got this error message: subscription-...
Nickolay Olshevsky's user avatar
0 votes
0 answers
354 views

RHEL leapp upgrade inhibited by YUM

i try to upgrade a RHEL 7.9 to 8.4 with leapp. When i try the update, it stoppes cause it says that yum is missing the plugins product-id subscription-manager But fun fact, when i start yum, it says ...
Chris9834's user avatar
  • 181
2 votes
3 answers
4k views

Postfix master.pid ExecStartPre with exit status 255

When I restart the Postfix daemon on my Rockylinux server, It happen an restorecon error who don't avoid the starting of the service but still an error : ● postfix.service - Postfix Mail Transport ...
Carsene's user avatar
  • 21
1 vote
1 answer
437 views

kafka cluster RAID vs JBOD with new hardware and kafka versions

we want to design production kafka cluster with 7 kafka machines , on RHEL OS kafka version should be - 2.7 usually we are installing the kafka machine/s disks as RAID 10 ( as confluent recommended ) ...
King David's user avatar
0 votes
0 answers
157 views

No outgoing traffic allowed by Red Hat 8

I have recently been given access to a VPS with Red Hat 8 installed. I need to enable outgoing traffic in order to install certain things, but currently this doesn't work. Here are some commands that ...
Migwell's user avatar
  • 101
1 vote
0 answers
2k views

DNSMASQ-TFTP failed sending file for PXE boot

2 month ago my PXE installation worked perfectly, now it can't send the file grubx64.efi to begin the PXE installation. juil. 08 08:03:05 install-server.my.domain dnsmasq[5913]: started, version 2.79 ...
Sommcrane's user avatar
0 votes
1 answer
154 views

scp between two redhat server stalls at 98% for long time

I have 2 RedHat servers (say rhel-01 and rhel-02) with 40G ports connected via 40G switch. When I'm trying to copy any large file (larger than 1G) from rhel-01 to rhel-02 it stalls at exactly 98% for ...
akjon RooSho's user avatar
0 votes
1 answer
1k views

How to shrink qcow2 disk safely?

This is what my guest looked like i shrinked the C partion in the guest in the windows 10 guest , made sure that the unallocated space is on the right most side. then, i did this sudo qemu-img ...
munish's user avatar
  • 151
0 votes
1 answer
717 views

Kubernetes Pods Getting in Pending State Forever

We have a CronJob which will run every 'x' minutes. For each and every Schedule, A Pod will be Scheduled and it runs and it is doing its job. Now, After 2-3 days, The Pod is getting into Pending State ...
RajNikhil Marpu's user avatar
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0 answers
617 views

dnf: missing library, but does exist

Trying to install libmediainfo with dnf, got an error about missing library that does exist. How to solve this ? Here is dnfoutput: $ sudo dnf install -v libmediainfo --allowerasing DNF version: 4.7.0 ...
ymudyruc's user avatar
0 votes
1 answer
58 views

How to deduce remote location of RPM that has been installed?

Suppose I had the following entries in /var/log/dnf.log: elfutils-default-yama-scope noarch 0.185-1.el8 baseos 49 k elfutils-devel ...
Lucky's user avatar
  • 113
0 votes
1 answer
1k views

Red Hat 7 XFS partition could not be mounted (can't read superblock)

I have a problem with several mounts. Can't read superbock is the error as reported below as example. I tried xfs_repair with/without -L but still got issue. Could someone advice? # mount /dev/lvm02/...
Lucas Rey's user avatar
  • 101
0 votes
1 answer
507 views

SQL Server JDBC Drivers installation on JBoss EAP 7.3

are the commands below correct? if no what is the correct way to install the module properly module add --name=com.mssql--resources=[PATH] --dependencies=javax.api,javax.transaction.api /subsystem=...
Loksy's user avatar
  • 11
1 vote
1 answer
2k views

How to recover from the GRUB losing its entries and faced with only "grub> _" at boot?

I performed a system upgrade from CentOS 7 to AlmaLinux 8 rather successfully (as noted here). During the process something strange happened and GRUB lost its boot entries entirely and my limited ...
ylluminate's user avatar
  • 1,197
-1 votes
1 answer
40 views

RAID + how to manipulate the disk size with RAID controller

We have 3 Hadoop HDFS servers on DELL HW physical machines , when all servers are with RHEL 7.2 version Each server include 3 HDFS disks when each disk is 1TB Now we want to do add another 3 Hadoop ...
King David's user avatar
-1 votes
2 answers
237 views

RHEL + can we improve disks performance by tuning kernel parameters?

we have Hadoop cluster and we are collection metrics collection data in order to investigate slowness behavior on spark applications after long investigation on our Hadoop cluster we noticed from ...
King David's user avatar
1 vote
1 answer
127 views

FreeIPA migrate the current NFSv4 storing home directories to another server

I have a FreeIPA set-up that uses NFSv4 to store users' home directories. NFS is running on the same physical server as the FreeIPA. CentOS btw. I'd like to move the NFS server on a new machine and ...
lolz's user avatar
  • 11
1 vote
1 answer
761 views

Can SSSD authenticate via LDAP with anonymous binding either forbidden in ACLs and with 'olcRequires: authc' enforced?

I manage a LAN with a list of users accessing their NFS-shared homes while being auhtenticated via NIS/YP (CentOS/Fedora-based clients and servers). I'm in the painful process of migrating out of NIS/...
Francesco's user avatar
0 votes
1 answer
1k views

PXE boot failing on RHEL install; PXE-E79

i'm trying to install RHEL 9.0 on a gigabyte motherboard, Product Name: H170M-D3H-CF. My dhcp setup has worked in the past, so I don't think the dhcp is the issue. I know that something is going ...
user3303210's user avatar
2 votes
1 answer
399 views

Cross realm constrained delegation

I have Red Hat IdM on RHEL8 with a two-way trust to AD on Windows 2019. What currently works: Constrained delegation for NFS clients. NFS clients can impersonate users from the IdM realm (gssproxy). ...
KrisVandenbergh's user avatar
0 votes
1 answer
1k views

Ansible Parted, only run if no partitions exist

I want to only run the parted operation if no partitions currently exist on that device. Said parts could have been made previously or manually outside of ansible in the past and in that case should ...
hat's user avatar
  • 3
0 votes
2 answers
677 views

using logical operator && to validate condition in Ansible

i would create a playbook that Check configured filesystems for TSM configuration I need to echo "${FS_TSM[@]}" from register: FS_TO_ADD and to conclude it, a conditional must be set to ...
medisamm's user avatar
  • 111
9 votes
1 answer
4k views

How to deal with missing packages from ubi-8-appstream?

I'm looking for best practices with Red Hat's sponsored container images: Universal Base Image, when we need to deploy application using this containers. A lot of third party apps requires packages ...
Vinícius Ferrão's user avatar
0 votes
0 answers
15 views

Public Cloud Virtual Machine - Restrict Uninstalling Packages

During the evaluation on public cloud(VMs) security product, Below question came into my mind. I would like to request your kind consultancy to fix this challenge Requirement: Install a security agent ...
UtpMahesh's user avatar
  • 101
0 votes
1 answer
727 views

Docker-ce oppening Firewalld ports on rocky 8

Docker-cd, when run with -p 3010:3010 bypass the firewall and open the container port to the world... If i disable docker and run a python -m http.server, the port is blocked to the outside (as it ...
Techmago's user avatar
  • 103
2 votes
1 answer
2k views

vm.swappiness in RedHat Enterprise Linux

I don't often post, so apologies in advance if my etiquette is poor. I'm being directed to add vm.swappiness=0 in /etc/sysctl.conf. When I view the contents of that file, I see the comments below. I'm ...
user495043's user avatar
0 votes
1 answer
1k views

DRBD does not promote resource on slave node after "pcs cluster stop --all"

I am trying to understand the recovering process of a promotable resource after "pcs cluster stop --all" and shutdown of both nodes. I have a two nodes + qdevice quorum with a DRBD resource. ...
Jose's user avatar
  • 21
3 votes
2 answers
32k views

Bad configuration option: pubkeyacceptedalgorithms

I want to connect to Red Hat Linux server, but I the the error Bad configuration option: pubkeyacceptedalgorithms when I use putty to connect to the server I get the error Network error: connection ...
Naruto Uzumaki's user avatar
0 votes
1 answer
1k views

CIS compliant auditd configuration on Red Hat 7/8

We have a large fleet of Red Hat 7/8 systems. We have a requirement to make sure that all systems are CIS compliant. One of the requirement is to not automatically rotate the audit logs. That is, ...
Jigar's user avatar
  • 101
1 vote
1 answer
95 views

RHEL 8: Administrator vs. Auditor role

On RHEL 8, are there prepared functions, methods, processes or tools to implement administrator/operator and auditor roles in the following way: An administrator/operator should be able to do almost ...
stackprotector's user avatar
2 votes
2 answers
7k views

GSSAPI Error: KDC has no support for encryption type on RHEL 8 joined to multi-domain AD forest

I have a simple MS ADDS multi-domain forest setup with a parent domain and one sub-domain. I joined a RHEL 8 server successfully to the sub-domain by using this official documentation. All OSs have ...
stackprotector's user avatar
0 votes
1 answer
2k views

saving ip config persistent with nmcli or something equal?

I am using RocksLinux where I set up my IP addresses by hand with the standard command "IP" and "IP -6" for my IP version 4 and 6 addresses. Now I want to save with NetworkManager, ...
SmileMZ's user avatar
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