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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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RHEL8 upgrade to RHEL9 with Leapp: warning: Signature not supported. Hash algorithm SHA1 not available

After upgrading some servers from RHEL8 to RHEL9 using the Leapp utility there's some warnings after the upgrade in dnf and rpm: warning: Signature not supported. Hash algorithm SHA1 not available. ...
Vinícius Ferrão's user avatar
0 votes
1 answer
22 views

RHEL7 Linux cannot find java path after installing java-11-openjdk

After installation of java-11-openjdk the Linux shell could not find the path to the java binary. Please see more details in the screenshot below. We observed this issue on java-11 but we suspect the ...
Mike's user avatar
  • 11
1 vote
0 answers
60 views

Unable SSH/SFTP from Azure VM to On-Prem Linux Server with error “Key_exchange_identification : read connection time out, Banner exchange time out"

I'm currently facing an issue connecting via SSH and SFTP from an Azure VM (Windows Server 2022) to an on-premises Linux server (RedHat 8.9). error_details_image Here are the details: Environment ...
Soon Kien Yuan sd200 40's user avatar
0 votes
2 answers
37 views

What is the linux / ubuntu / rhel term for Syspreping an image on Windows?

In the Windows world, you can take a VM, apply all of your software and Windows updates to it then save it as a new base image in .vhd or iso format. We call this sysprep, and its great to allow you ...
FoxDeploy's user avatar
  • 213
0 votes
0 answers
102 views

Use yum or versionlock to ignore packages associated with a repository

I have a RHEL-8 bash script that installs several packages including ansible. Some of the packages come from epel while others come from the default rhel-8-baseos-rhui-rpms. dnf-automatic has exposed ...
John R's user avatar
  • 393
0 votes
0 answers
15 views

"Filter failed" error in Redhat 7.9

Good afternoon, I would like to know if you can help me with this error in Red Hat 7.9, when trying to print via CUPS on a printer created by SMB I get the following error: retenido desde Tue May 14 ...
user3338076's user avatar
0 votes
0 answers
195 views

RHEL upgrade from RHEL 7 to RHEL 8 by using ISO + upgrade an offline

We are working on Linux RHEL 7.9 ( VM machines ) in order to upgrade RHEL version to 8.6 We are using the ISO file - rhel-8.6-x86_64-dvd.iso since RHEL7.9 machines has no direct connection to the ...
King David's user avatar
11 votes
4 answers
3k views

How to find what is wearing out my SSDs

We have 8 Cisco servers with 12 spinning disks for data and 2 SSDs for OS. The 2 SSDs are in linux software raid 1. The SSDs all have their wear indicator in single digits and some of those that have ...
MikeKulls's user avatar
  • 509
0 votes
1 answer
35 views

How do i safely add a missing partition to existing raid1 array in RHEL8

I did a RAID1 to lvm for / partition but i forgot to RAID1 /boot and /boot/efi standard partition, how do i safely add the missing partitions into RAID1 array? click here for image of partitions
wlchew's user avatar
  • 1
0 votes
0 answers
17 views

Client is not able to establish a connection with FTP (VSFTPD) server

my guess is, this is because of TLS. It was working with centos, now moved to RHEL. Please help. thank in advance Please find below log and vsftpd confi Log vsftpd.conf anonymous_enable=NO ...
Sankara Rao's user avatar
0 votes
1 answer
70 views

Firewalld: adding a source IP blocks SSH. Different behaviour between versions?

I have two servers with different versions of RHEL and firewalld. Both are configured the same, but they are behaving differently when I add a source IP to a zone. Server A: # cat /etc/redhat-release ...
Darren's user avatar
  • 335
0 votes
0 answers
98 views

What is function of 'account required pam_faillock.so'?

I check pam configuration in /etc/pam.d/system-auth and /etc/pam.d/password-auth and I found line 'auth required pam_faillock.so'. In some article that I read, if you want to set faillock you need ...
M. Fachrizal Utama's user avatar
0 votes
1 answer
412 views

repomd.xml parser error when trying to install from a yum offline repo

I'm currently working on a RedHat 8.5 based environment that's completely isolated from the internet and from the LAN. Given the need of installing packages into a new machine I proceeded to mount an ...
grizzo's user avatar
  • 1
0 votes
0 answers
60 views

How to install Firefox in a RedHat UBI9 ubi-minimal container running on ARM

I have an image based on registry.access.redhat.com/ubi9-minimal running on a MacBook Pro (M1) using Podman. I need to install Firefox and Gecko via the image's Dockerfile, however, the default ...
John Gerken's user avatar
1 vote
4 answers
201 views

NFS and ACLs in a Kerberos context on Rocky Linux 8.9

We're running a Rocky Linux 8.9 (so, essentially RHEL 8.9) shop and I've been tasked with investigating ACLs on filesystems mounted via NFS. We're using FreeIPA/IdM as well. I've set up a test machine,...
bolind's user avatar
  • 211
0 votes
0 answers
60 views

Redhat RHE9 ansible raising Invalid repo ID while the repo is listed on the system

I'm running Linux Redhat 9 on one of my AWS EC2 and I'm trying to install OpenVPN server. For that I want to enable codeready-builder repository. Here is the ansible task that enable the repo : 15 - ...
nixmind's user avatar
  • 111
0 votes
0 answers
37 views

How to extract umask value from new instance bash shell with single command?

I can extract umask value from new instance bash shell with this method : [ansible@rhel8 ~]$ umask 0027 [ansible@rhel8 ~]$ bash [ansible@rhel8 ~]$ umask 0002 [ansible@rhel8 ~]$ But for me this is ...
M. Fachrizal Utama's user avatar
0 votes
0 answers
19 views

How to find root cause for myapge.com didn't send any data?

I have deployed my app on REDHAT server,behind LB in public cloud. SSL termination should be done on LB. I got The page is not working myapge.com didn't send any data I tried curl 10.111.123.6:2273 ...
MikiBelavista's user avatar
0 votes
0 answers
21 views

is it a normal to have load average upper than 1? [duplicate]

On 7.9 redhat os. I was told by our admin server that load average (can be seen using top) of my server should not be upper than 1. but our 3 servers have a load balancing that is equal to 7.78, or ...
iostrym's user avatar
  • 15
0 votes
0 answers
25 views

mteTrigger snmpTrap not getting fired when NTP is down

I'm trying to generate DISMAN EVENT whenever NTP is down by extending snmp. Have written shell script to extend mib. Using NTPv4-MIB https://datatracker.ietf.org/doc/html/rfc5907. In the custom pass-...
Vijay S B's user avatar
  • 203
0 votes
3 answers
107 views

How to copy file from /opt directory in local system to remote system in /opt directory with sudo user

I have redhat machine in this machine having some file under the /opt directory. I want to copy those file in remote machine /opt directory using rsync command. The condition is i'm using admin user ...
Chirag Darji's user avatar
0 votes
0 answers
65 views

Cluster Openshift on AWS with IPI, installation error no such host

I'm trying to deploy an OpenShift cluster on AWS using the IPI installation. I've used a t3.xlarge instance and followed the steps in the following guide https://docs.openshift.com/container-platform/...
Felice Coppola's user avatar
3 votes
2 answers
695 views

STIG'd RedHat 8 kills tmux session upon SSH timeout

I am working on a Red Hat Enterprise Linux (RHEL) 8 machine with the DISA STIG applied via OpenSCAP. The STIG requires that users be automatically dropped into a tmux session, that tmux session locks ...
Andrew Laramore's user avatar
1 vote
0 answers
69 views

Hadoop + warnings as slow block-receive from data-node machines

We have Hadoop cluster with 487 data-nodes machines ( each data-node machine include also the Service node-manager ) , all machines are physical machines ( DELL ) , and OS is RHEL 7.9 version. Each ...
King David's user avatar
0 votes
0 answers
110 views

FreeIPA fails to deploy in kubernetes due to dbus error

I'm facing issues with deploying FreeIPA in kubernetes. I'm using provided image based on rocky 9, but this issue also happens on other images (based on fedora, CentOS etc.). Deploying it my local ...
Art's user avatar
  • 1
0 votes
1 answer
130 views

what is the link between SAR memory output and free command?

I now understand a bit more RAM usage in linux OS and I knwo that I can use free -h to have correct knowledge about RAM utilization in my server. but I also have SAR that is working on my server and I ...
iostrym's user avatar
  • 15
0 votes
1 answer
211 views

Creating mount namespace and isolating mount points redhat

Trying to get a grasp of all the namespaces and im following this doc https://www.redhat.com/sysadmin/mount-namespaces, in here everything was fine until i got to the Creating our mount namespace ...
Tahtoh's user avatar
  • 3
0 votes
0 answers
56 views

Update-alternatives does not update all Java symlinks

I'm getting some strange behavior from update-alternatives on RHEL 7.9 when I have Amazon Correto Java 11 and the normal Java 1.8.0 both installed. When Correto is selected as the default, this is the ...
Juan Jimenez's user avatar
0 votes
1 answer
168 views

RHEL + how to know the limit of concurrent connections number per port?

how to know the number of concurrent connections per port on RHEL 7.x machines for instance, let say we connect to port 9080 with XXXX concurrent connections. wget http://server_mngmnt.jupiter.com:...
King David's user avatar
0 votes
0 answers
66 views

YARN resource manager "HTTP request sent, awaiting response..."

we have Hadoop cluster with active/stand by resource manager services the active resource manager is on master1 machine and the stand by resource manager is on master2 machine in our cluster YARN ...
King David's user avatar
0 votes
0 answers
32 views

PostgreSQL + Removing old Host from DB not succeeded

We have HDP cluster with 152 workers machines - worker1.duplex.com .. worker152.duplex.com , While all machines are installed on RHEL 7.9 version We are trying to delete the last host - worker152....
King David's user avatar
1 vote
0 answers
37 views

Support Multiple Service Dependencies in Requires Directive in RedHat 8.9

Thank You for looking into the question. I have a Systemd service lets call it main-application.service which needs service testA.service and testB.service started before start of itself. Following is ...
Pulkit Agarwal's user avatar
0 votes
0 answers
58 views

Create custom SELinux policy with full access

I have a process my_process which should have access to all processes, files, ports, network traffic, etc. This process needs to work with SELinux. How can I configure the appropriate policy? I tried ...
Mark Tah's user avatar
0 votes
1 answer
59 views

do I need to monitor zombies process in my redhat 7.9 server?

I have a 7.9 redhat server with around 30 users, 64 cores and 512 Go RAM. I have several zombies process, I don't know exactly what did user to create these but I have the feeling after reading stuff ...
iostrym's user avatar
  • 15
0 votes
2 answers
203 views

Grant sudo based on SELinux

I've recently come across SELinux and sudo. Is it possible to allow users sudo when SELinux is permissive, and block these while allowing others when SELinux is enforced? I've looked at section 3.9. ...
user1098490's user avatar
0 votes
1 answer
36 views

how to manage NFS network consumption on redhat 7.9 server ? for instance to know which process/which user use the most the NFS link?

I have a server master that contain tools and home directories for all users. then 3 servers are NFS slave connected to the master. user are connected to the slave and they get their home folder ...
iostrym's user avatar
  • 15
1 vote
0 answers
90 views

why apache Kafka documentation not gives the ability to use Kafka over NFS as Netapp

We read the latest apache documentation as https://kafka.apache.org/35/documentation.html And what is interesting is that , documentation not mentioned the option to use storage over NFS As Netapp or ...
King David's user avatar
1 vote
4 answers
654 views

How to monitor RAM consumption on Red Hat 7.9

Red Hat 7.9 server with 512 GB RAM. We often have alerts about swap being full. Swap is often used 99%. Our server admin told us it is normal for linux to have swap used 100%. There is no way to check ...
iostrym's user avatar
  • 15
1 vote
0 answers
81 views

Filesystem resource failed, Error=timeout during failover resource on pacemaker cluster

I try to setup NFS Active/passive + DRBD on Pacemaker cluster. When i start cluster for the first time every things is ok but when i shutdown master node, resource move to another node but failed on ...
wass's user avatar
  • 11
0 votes
0 answers
83 views

Unable to login with domain users through xrdp in RHEL 9

I have setup Xrdp in RHEL workstation for remote login from windows machine through mstsc. And I have joined the RHEL workstation to Active directory server. I am to login to local users create in ...
Pradeep M's user avatar
0 votes
1 answer
29 views

How to send rotated logs to rsyslog server?

I want to send all the rotated logs from client to my rsyslog server. I already tried using the modfile, but it sends the running logs not the rotated logs (gunzip).
Jessica Martinez's user avatar
0 votes
1 answer
71 views

vmstat + on RHEL machine high values of swpd

The swpd field indicates how much swap space has been used; this value increases when the systems physical memory is full and the Linux kernel starts to use the swap partition/file. When the systems ...
King David's user avatar
2 votes
1 answer
968 views

RHEL + how to prevent OS disk - sda to change after reboot

We installed RHEL 7.9 version on physical machine., when sda device was the OS. The machine has the following disks. sda - OS disk sdb - data disk sdc - data disk After reboot OS disk device changed ...
King David's user avatar
0 votes
1 answer
129 views

Login prompt reports 4 failed login but the log shows only 1 entry

I just logged into my small homeserver and I saw this message: Last failed login: Sun Jan 14 17:08:42 CET 2024 from 192.168.1.111 on ssh:notty There were 4 failed login attempts since the last ...
matteo-g's user avatar
  • 103
0 votes
0 answers
131 views

System boots with error in systemd-modules-load.service

During the boot of my homeserver (RHEL9), I noticed an error message regarding systemd and some kernel module. I checked the following: [root@homeserver ~]# systemctl status systemd-modules-load....
matteo-g's user avatar
  • 103
0 votes
0 answers
149 views

Is it possible to limit the size of a CIFS/SMB share when mounted?

I have one big 5 TB (and growing) CIFS/SMB share stored on HDD (RAID) on one centralized server for main storage (and backup) and plan to use several additional Linux servers (as proxies) where I ...
kataba's user avatar
  • 1
0 votes
1 answer
283 views

What is the correct KVM VM vCPU config in cockpit for proper load balance on physical CPUs

I have dual CPU server. I want to run some VMs on top of it. While configuring VMs thru cockpit (on redhat 8.0). I cam across this screen: I just want to allocate 8 cores with 4 on each physical CPU. ...
rajeev's user avatar
  • 101
1 vote
2 answers
850 views

Problems deploying Ansible playbook to Linux server using python3.8 - selinux python module does not assign correct contexts

I run an Alma 8/9 estate and use Ansible to deploy various config changes, and I've run into an unusual problem on one of my client boxes. Alma 8 by standard comes with python 3.6, which works quite ...
motorleague's user avatar
0 votes
0 answers
302 views

LUKS full disk encryption with decryption key on USB drive

I have alma9 setup with luks full disk encryption. I want to put a decryption key on a usb drive to boot up without a password. Picking through the various tutorials (mostly for debian), I have this: #...
dan's user avatar
  • 333
-1 votes
1 answer
564 views

High Load Average but Low CPU Usage

I'm trying to find the cause of the high load average on our server running in RHEL 8. The top command shows that our load average for 1, 5, and 15 is more than 250+. Also, server is responsive at the ...
IamBayMax's user avatar

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