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.
3,238
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Redhat Linux 8.5: Upgrading to OpenSSH 9.2 sees '/bin/bash: Permission denied' with root login
After successfully make-installed OpenSSH from source followed detailed instructions from a post of online community (version checked ok), only to see /bin/bash: Permission denied at root login.
...
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32
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yum unable to find a specific package in private repo
I have a really weird problem. I've setup my private yum repo, it is serving the rpm just fine, EXCEPT one rpm.
Let's say I've build and copied over all of my rpms to my custom repo directory, ...
- 173
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18
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BIND 9 XML Statistics-channels build modification after server is already up and running
Migrating away from BIND to R53 and would prefer not to use the named.stats file for monitoring activity during the migration period. As such, I checked the current named.conf and verified no ...
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1
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47
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How do I set up a godaddy hosting server
A client has contacted me, requesting to deploy a custom solution (python API and a react application) to his GoDaddy server.
I successfully established SSH connection (which was hell, I had to enable ...
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2
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63
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how to delete a xfs file system from logical volume (lvm2), to achieve the goal being this logical volume without any file system?
I have LVM RedHat 8 intall and there's one Volume Group there.
Fri May 19 [michal@Ora2 ~]$ sudo vgdisplay
--- Volume group ---
VG Name ol
System ID
Format lvm2
...
- 115
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1
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44
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kernel messages are complained about memory.inspite all DIMM cards was replaced
we have few DELL machines ( with RHEL 7.6) , and as we replaced the DIMM cards on machines because the Erros that we seen from kernel messages
after some time we checked again the kernel messages and ...
- 479
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30
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Routing decision after IPSec processing
I have a Linux box running in AWS EC2 with just one interface - eht0.
This interface connected to private subnet 172.16.0.0 and has an IP 10.95.114.69 on it.
All hosts from subnet are reachable from ...
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2
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38
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Use original linux user bashrc also as root user
I extended the bashrc file of my linux user. This file contains extra aliases, functions, whatever is useful. It's synchronized with a playbook across our 100+ servers.
When i'm working on linux I ...
2
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0
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65
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Change UID in influxdb Docker container when running in Kubernetes
When mounting persistent storage for influxdb container the NFS storage ownership is changed to uid 1000 when container is run. Need to have a known RHEL host user (2000) have ownership of the file ...
- 21
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57
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RHEL 9 server with cloned disk unable to find logical volume after boot
We have an RHEL 9 server. We cloned it's disk drive to a new disk. (dd if=/dev/olddrive of=/dev/newdrive bs=4096)
It has a couple LVM partitions (as shown on /etc/fstab on the cloned disk):
However ...
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3
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Is there a good way to allow non-root users to mount arbitrary external USB drives on Linux?
We have a situation where a site office has a couple of Rocky Linux 8 servers and regularly receives large amounts of data from clients. Data arrives on a variety of external USB hard drives and the ...
- 181
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NFSv4: machine gets unresponsive when share is accessed without ticket
We are implementing NFSv4_kerberos for mounting of home directories on a RHEL 9 machine.
The think is that if a user has a cronjob that writes to the mounted homedir after the ticket expiration, the ...
- 180
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1
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35
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iSCSI shared disks with custom device name on clients
I'm using RHEL 7.9 (Maipo) and need to setup for all iSCSI clients the same device name, like /dev/sdb or /dev/thiscustomname.
I could do that by sharing the source disk using multipath, but for Db2 ...
- 113
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38
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Script to scan log file
I have a log file with the content below. Let's call it as cpu_usage.out:
2023-04-12 12:04: CPU STATISTICS CRITICAL : USED:- 2.52% IDLE:- 97.49%|CpuUsed=2.52;0;1 CpuIdle=97.49;0;1
2023-04-12 12:05: ...
- 17
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1
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45
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RHEL + how to capture fresh kernel message without machine reboot
here is example from dmesg output from important production server ( RHEL 7.2 - DELL machine HW )
as we can see the sde disk in server is dying
[Wed Jun 30 11:24:58 2021] sd 0:2:4:0: [sde] tag#0 ...
- 479
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1
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100
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NGINX reverse proxy on different port
I would like to set up a conf file, which basically listen to all request on a specific port on the nginx server, and all these request should be forwarded to a another group of servers which handle ...
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1
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57
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Find to exclude the snapthost directory in SLES 15
I am searching for the executable file name pxe using the command
find / -type f -executable -print | grep pxe$
and this works fine in RHEL, but in SLES the snapshot directory messses up the search. ...
- 3
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1
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98
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Nagios core GUI/UI fails to open after nagios-4.4.6-4 to 4.4.9-1 update on Rhel8
Nagios core GUI/UI fails to open after nagios-4.4.6-4 to 4.4.9-1 update on Rhel8 vm.
Whoops! Error: Could not read host and service status information!
Nothing in /var/log/nagios/nagios.log.
/sbin/...
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24
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df command showing incorrect information
i have two rhel 7.9 servers with replicated glusterfs storage, and the df command is dispalying wrong size information on both servers
The machines size on Vcenter is 16.3To but when using df it shows ...
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23
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Extending virtual device and then fdisk now gives unknown physical volume on centos 7
I'm trying to extend space on sdb. It was 800G before, I've added 1TB to it, making it 1.8T total (extended the disk from VM's Vmware settings).
Extended the 800G disk with 1TB more making it 1.8TB
...
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38
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rhel + disk util is very high , what is the impact for long term
we have backup server with rhel version 7.2
server is VM machine , and OS disk is VMDK disk
disk used space is around - 50% , and from smartctl we not see problem
as we can see from follwing details
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- 479
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61
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systemd-socket-proxyd[1076]: Failed to connect to remote host: Permission denied
I have a RHEL 6 running a rdp forward service. And now I would like to migrate to RHEL 9. But xinetd is no longer available in RHEL 9. I try to setup using systemd but failed with:
systemd-socket-...
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21
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Usijg sudo credentials with veeam and solarwinds times out
I have a new physical RH 8 server with NIST 800171 policies applied to it. When I try to install Veeam agent from our windows machine, I get an error "Cannot send data because the terminal is not ...
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1
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40
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Yum command to find files that an RPM will deploy
On Ubuntu/Debian you can run
apt-file list nginx-core
and you will get a list of all the files that a package will deploy when installed.
How can I achieve this in RHEL with the yum command ?
The ...
- 43
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92
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Rhel 9 pam_mkhomedir vs pam_oddjob_mkhomedir
I've had a read at the following https://access.redhat.com/discussions/903523. However doesn't RHEL9 support the creation of homedir unless oddjobd.service is running?
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67
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RHEL server + what is the meaning of the kernel messages about Hung TX queue XX
We have 524 RHEL machines. in our Hadoop cluster ( all machines are DELL HW )
all machines are RHEL 7.2 version (old kernel version)
uname -r
3.10.0-327.el7.x86_64
last week we seen the following ...
- 479
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31
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RHEL + what could be the reason that FSTYPE not defined from lablk , in spite filesystem was created on disk in the past
I want to share the following very strange behavior , that for me it's not make sense but its a a fact on our production RHEL 7.2 server
disks are VMDK
from df -h we can see the following:
sdb ...
- 479
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1
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907
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How to upgrade to php 8.1 on RHEL 8.7?
How to upgrade to php8.1 in RHEL 8.7, I went through various guides and ended up installing php:remi-8.1 which is desirable however, php-gd is not willing to be installed cause of missing libraries.
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- 101
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102
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How to sudo using SELinux? The example given in the Red Hat security document isn't working for me
Following the instructions at: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/selinux_users_and_administrators_guide/index#sect-Security-Enhanced_Linux-...
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1
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82
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Clear RAM Memory Cache and buffer on production Hadoop cluster with HDFS filesystem
we have Hadoop cluster with 265 Linux RHEL machines.
from total 265 machines, we have 230 data nodes machines with HDFS filesystem.
total memory on each data-node is 128G and we run many spark ...
- 479
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1
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123
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kernel message + how to know if we need to replace the DIMM based on kernel messages
we have RHEL 7.6 server , and we noticed about the following kernel messages.
[1065085.048872] EDAC sbridge MC0: PROCESSOR 0:406f1 TIME 1676989040 SOCKET 0 APIC 0
[1065086.052107] EDAC MC1: 0 CE ...
- 479
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40
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Memcached error for apache httpd 2.4
I created an EC2 instance with Apache HTTPD 2.4 with mod_ssl version 2.4.34. I've created a Memcached cluster on AWS ElastiCache version 1.6.17 with encryption in transit.
The goal is to have HTTPD ...
- 111
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0
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24
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Install OpenShift on RedHat or Centos? whitout paying
I need to create a POC using OpenShift, if I use a machine with Red Hat I need to have a subscription? it is posible to do it without paying?
and if is not possible, can I use CentOS to do the same ...
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294
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xfs corruption metadata after reboot
I had a problem on a RAID1 with 4 disks. We replaced the faulty disk and restarted the server, the rebuild was done, two linux centos 7 machines did not come up accusing error of xfs corruption. Other ...
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44
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How do I configure httpd to host multiple websites on the same web server
Using RHEL7.9, httpd 2.4.6
I have three sites in my /var/www/html/:
/main
/site1
/site2
The httpd.conf DocumentRoot points to /main
Listen 80
ServerName example.com
DocumentRoot "/var/www/html/...
- 101
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2
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568
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Redhat phantom out of memory issues
We have a server that runs various headless applications, such as Java. It processes to stream data, daily python scripts, etc. From time to time some of our applications get out of memory errors.
The ...
- 336
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59
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rpcinfo not working inside a docker container running on rhel9
rpcinfo is working fine on host(rhel). On the same host inside container, rpcinfo does not work. This is not related to the image, as this works fine on RHEL 8 and centos. Any inputs are helpful.
#...
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firewalld in RHEL9 -do I have to whitelist sources on public zone now?
we've just built our first webserver on RHEL9 (alma linux 9.1) being used to RHEL 7 (centos 7) mostly.
the firewalld config all seems the same, but when setting up our usual security setup of:
https (...
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0
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28
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CIS RHEL shows "This is system is not registered with an entitlement server you can use subscription manager to register" [duplicate]
Hey guys I purchased and deployed a CIS hardened image of RHELv 7.9 on my azure platform but now it shows the above message when I run the yum command to install or update something.
If I am not ...
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1
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65
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Audit Log Partition keeps getting corrupted. How to prevent or boot anyway?
I am running RHEL7, and my audit log partition randomly (not often, but often enough to annoy me) gets corrupted, preventing me from booting. How can I either prevent the partition from being ...
- 61
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Reassign space to mount points - RHEL
This is the output from df -h
enter image description here
I want to reassign space of /cdrbackup and /smdb to /smpdb. Is it possible to do that?
Thanks in advance,
M
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0
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215
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ubi8 docker image missing packages
I am experimenting the ubi8 as a migration from centos 7 to ubi8 for rhel linux distribution.
Not sure if I miss something, but the ubi-8-appstream-rpms and ubi-8-baseos-rpms seem missing a lot of ...
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43
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Azure Red Hat OpenShift requires a minimum of 40 cores to create and run an OpenShift cluster
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I am trying to deploy ARO azure redhat openshift cluster but it get failing stating The resource operation completed with terminal provisioning state ResourceQuotaExceeded Resource quota of cores ...
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0
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182
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PermitRootLogin set to no but can still use root on Centos Stream 9
Im following an RHCSA training course and to disable root I need to set PermitRootLogin to no in the /etc/ssh/sshd_config file and restart sshd using systemctl. I've done all this and can still login ...
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1
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43
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Alma 9.1 Samba config not allowing outside connections
I just installed Alma 9.1 on my homelab, and I've attempted to install samba everything seems to work okay locally. Im able to run smbclient -U user -W SAMBA -L //192.168.0.254 and list all the ...
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27
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Alternate Ubuntu Packages for Oracle Linux/RHEL
Can someone help me with the below packages
libconfig-dev libhiredis-dev libelf-dev libevent-dev
What will be alternate packages for these in RHEL or Oracle LINUX
- 125
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660
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dnf update: Cannot download, all mirrors were already tried without success. (all mirror 404)
I am trying to execute the dnf update command on almalinux 8.7
Before a few hours it worked properly, now all mirror gives 404.
I examined the urls, and it seems, that in all repo the checksum in urls ...
- 170
2
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2
answers
855
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Safe way to clear all packages from yum cache?
I know that yum clean all doesn't necessarily clear all the package files. I know from "Maybe you want: rm -rf /var/cache/yum" that I might have to, good grief, bluntly clear all of /var/...
- 123
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1
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155
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Set NIC Bonding Transmit Hash in EL9 with NetworkManager
I have just upgraded to Rocky Linux 9 and haven't been able to set the nic bond Transmit Hash Policy to 1. I'm using NetworlManager rather than the ifcfg files which is used by default in EL9.
I have ...
- 101
0
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1
answer
195
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Jenkins Plugins Error After Update - "Errors Checking Update Site"
I'm running Jenkins on a RHEL 7.9 server, with OpenJDK 11.0.17. I recently updated Jenkins to version 2.361.4 from 2.346.3. After updating I went to the plugins manager page to see what plugins ...
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