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Questions tagged [redhat-enterprise-linux]

Use for questions about Red Hat Enterprise Linux (RHEL), a Linux distribution from Red Hat intended for enterprise use. Note there are version-specific RHEL tags for questions unique to a specific version. Use a product-specific tag for questions about other distros in the Red Hat family, like ...

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8 views

HP server bl460c gen8 not booting new linux installation [on hold]

i have performed a new linux installation on a bl460c gen8 and it isn't booting the new installation. it seems like there is a sd card or usb key that is attached to the server. how can i disable ...
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0answers
20 views

How do disable 'Alt Tab' shortcut on RHEL 7 With KDE?

How can you disable the 'Alt Tab' short cut on RHEL7 with KDE programmatically? I have a Java app that when run needs to prevent the user from using the 'Alt Tab' shortcut. Therefore, I would like to ...
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0answers
9 views

ICMP echo replay limit with limited packet size

I am going to filter Ping request to my server, and only accepts 20 ping request with length 500 and max echo replay from my server 20. after 20 echo replay ping will be off. how can i do this by ...
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0answers
34 views

How to install packages on Linux without root-access?

For whatever reasons, root-capable administrators at our organization limit the choice of packages to the vendor's official "base" repository (RHEL). Not even EPEL is possible, much less IUS. Our ...
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0answers
9 views

Can't mount RHEL 7.5 iso on /dev/cdrom.. No medium found in SR0

I configured my server to use the RHEL 7.5 iso as the repo a while back which was working just fine, however for some reason it is no longer working. In order to mount the dvd I issued the following ...
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1answer
70 views

How do I avoid “Argument list too long” errors when compressing thousands of files?

I have 200,000 XML files in the folder on a RHEL7 Linux server. I need to zip all 200,000 XML files. I am using the Tar command but getting the error "Argument list too long" is there any other way ...
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1answer
27 views

NO WIFI ADAPTER FOR RHEL 7.3

I have been searching all the answers which revolve around the network adapter in Linux. Sadly, I am stuck where I started since none of the remedies was a breakthrough for me. Output for lspci | grep ...
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0answers
30 views

firewall-cmd configure destination NAT

I am trying to configure destiation NAT on a RHEL 7.4 server. I want any traffic generated for 10.10.10.10:443 to go to 10.20.20.20:443. After some Googling I used following direct rule: firewall-...
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1answer
41 views

Configure a static ip to a redhat vm on virtualbox

I have some questions about configuring a redhat vm on virtualbox. The installation id done. When i used the command isee that i have no ip adress for eth0. So i want to set static ip adress to my vm. ...
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0answers
10 views

Fencing configuration for a high availability system with IPMI on RedHat Linux 7

I am configuring a 2-node, high availability (HA) system using IPMI on Red Hat Enterprise Linux 7. The RedHat HA admin. guide has a couple of examples using PDU that looks like the following: [root@...
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1answer
25 views

Cant get Red Hat 7 USB out of Emergency mode, ( vi /etc/fstab not showing at all)

I'm having an issue with a bootable USB I made. So this is an ongoing project that I have been working on for a while now. Basically, I installed red hat 7 onto a usb so that the usb is essentially ...
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2answers
32 views

Extending the root logical volume on Scientific Linux - to unmount or not?

I’m planning to install a new hard drive to expand the root logical volume on my machine, which is having now pretty continual capacity issues. The various tutorials for RHEL-like operating systems ...
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0answers
19 views

Live USB boots into emergency mode after being DD'ed from source USB

I have a Live red hat 7 USB that I made, and I dd'ed the first 5 gigs of it into a .raw.gz that I then zcatted to the new USB. The new USB boots, however for some reason it is booting into emergency ...
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0answers
10 views

Why I can't upload files in any other directory than directory named uploads?

I am using redhat 7 and php 5.6.25. I have a php file upload script which does upload a file but only to the directory named uploads. If I want to upload the file to any other directory it returns ...
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0answers
14 views

Live RHEL 7 USB Slow after being Cloned using DD command.

So I have a Live USB that I made ( meaning the USB itself is the running OS), and I just used DD to copy the entire drive; essentially Mirror it to the new Formatted Empty USB. I am wondering why the ...
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0answers
10 views

How do I create a RHEL 6.9 and 7.5 multi-boot DVD?

I'm trying to create a multi-DVD build procedure where the ks.cfg prompts for the next DVD. I've found this blog talking about the .treeinfo file, but he only references what it could be used for not ...
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1answer
40 views

Any reason why I can SSH from server terminal to remote machine but putty wont work?

So the title basically describes the issue, however here is a more elaborate breakdown. I can SSH into the remote machine from a local terminal, however I cant putty into the remote machine. I'm not ...
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1answer
59 views

resolve ip address to domain name/hostname in browser

I configured DNS server and able to resolve ip to doamin and domain to ip in terminal. If am trying to resolve domain name over browser that is also working but i want to open my website via ip but ...
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0answers
23 views

Trust and launch all desktop files after restart RHEL 7

My 64-bit computer running RHEL 7.5 was recently updated to kernel version 3.10.0-862.el7. Since then, every time I restart my computer, all of my desktop icons are gone and replaced by generic file ...
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0answers
7 views

Is there any way to rollback/undo erase krb5 libs or just restore the system to an earlier point red hat 7

I finally figured out why the Kerberos authentication wont work, the libraries are messed up pretty badly. After peering through the yum history it looks like someone tried to remove krb5-libs and it ...
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1answer
17 views

Bash list/process files in a specific order

#! bash I've tried a few things I've seen on google but nothing seems to work. I don't see how this should be a high challenge but maybe it just isn't possible? I have a list of files in a folder ...
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0answers
39 views

SVN to GIT push failing on Linux VM using atlassian svn migration scripts jar

I'm trying to migrate a SVN repo to bitbucket GIT using the atlassian svn migration jar. When I run java -jar svn-migration-scripts.jar verify I see the following message Git: using version 2.4.0 ...
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0answers
29 views

Why crontab job stopped during running?

last year it can generate *Error.txt files and no limit this year only add new switches in new project and changed to new security manager. what is wrong in syslog server? Linux version 2.6.32-573.22....
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0answers
32 views

Red Hat Rebuild initramfs from dracut emergency shell

after hw changes. I have boot issue with redhat 7.2, the error is the following: http://i65.tinypic.com/25upno2.png I tried to boot to rescue using RedHat DVD to rebuild initramfs, but it doesn't ...
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1answer
416 views

Double Skype icon in system tray Xfce

I have Red Hat based system with Xfce DE and installed Skype last version from the official site. When I running it (only once, with one user account) in system tray I seeing double Skype icon. How ...
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0answers
19 views

Issue With FTP Server that uses Kerberos to Authenticate Against AD

I have a Linux FTP that i'm running on my server and It utilizes Kerberos to authenticate against an Active Directory. I have been fighting with this one for a few days, and the I think I'm close. The ...
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1answer
29 views

vsftpd on rhel 7.4 disallowing write & modify Ask

I've successfully installed & configured vsftp. I've created a user (joe) & companion group (joes). My user 'joe' can create, update, & delete files in it's 'home' directory without error ...
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1answer
78 views

Setting static IP address disconnects Internet

I wish to host a personal website on CentOs-7 Operating system. For that I bought a static IP address from my internet service provider (Hathway). They provided me a static IP address, subnet (255.255....
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1answer
13 views

How to pre-populate dot files for active directory users on RHEL

So I'm running into an interesting issue, I can't seem to find any good documentation on how to effectively go about this. I have a RHEL box connected to AD and want bootstrap each user profile so ...
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1answer
27 views

How can we set http_proxy permanantly RHEL

I have tried setting http_proxy and https_proxy using below command; but the value did not retain in Red Hat Enterprise Linux Server release 7.4. How can we set this value permanently and applicable ...
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2answers
116 views

Recover /usr/lib64 folder in Red Hat linux

First I backed up /usr/lib64 folder by copying it including all its content and named it lib64_bk, and then I made some modifications on the original folder, because of that I found myself on the need ...
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0answers
5 views

Multiple entries of same session in wtmp in RHEL 7.4

I am getting 3 entries of the same session in a wtmp file. The weird entry is the third entry, which shows log out at the same time of login. Can some help me in understanding which configuration ...
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1answer
22 views

How to determine ethernet port capability with RHEL operating systems

I am not quite sure how to word this..as you can tell by the slightly vague title. I recently purchased an MSI WE72 7RJ-1032US Mobile Workstation Laptop in hopes of making it into a development ...
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1answer
68 views

incrontab -e 'editor finished with error: No such file or directory'

When I tried to add an incron entry I got this error. incrontab -e editor finished with error: No such file or directory What am I doing wrong?
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1answer
145 views

git ls-remote throws fatal: HTTP request failed

when jenkins tries this command: git ls-remote --tags --heads https://github.com/angular/bower-angular-resource.git it fails and breaks the build, trying the same command in the console got the ...
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1answer
67 views

How set up a new disk device /dev/vdb?

I'm using KVM to boot the VM. I'm starting with RHEL and I would like to know how do I create a new /dev/vdb? [root@master dev]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sr0 ...
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1answer
12 views

Prevent LVM creating dm-X devices

Was wondering if it's possible to stop LVM on RHEL7 creating symlinks of /dev/dm-X to rootvg? I'm using my RHEL hosts to connect to SAN LUNs, and prefer to have /dev/dm-X only mapped to multipath ...
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1answer
63 views

'ls' output timestamps different for files in /tmp versus in home directory

I'm ssh'd into my university Linux servers (RHEL 7). Here's the deal. It has to do with 'ls' and "old" files. Home directory: $ touch -d '1918-11-11 11:00 GMT' wwi-armistice $ touch now $ sleep 1 $ ...
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0answers
30 views

Puppet Tomcat Module creating context.xml

I might be doing something really stupid here but I'm damned if I can figure it out. We have a usual puppet with tomcat install and I'm trying to use the puppet tomcat module to lay down a context....
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0answers
19 views

How to Force fsck for all other non-root partitions

We have the following disks and there mount point: /dev/sdb /appTdb/sdc ext4 defaults,noatime 0 0 /dev/sdc /appTdb/sdd ext4 defaults,noatime 0 0 /dev/sdd /appTdb/sde ext4 defaults,noatime 0 0 /dev/...
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1answer
128 views

Analyze Spectre and Meltdown Check Script by Red Hat

As you know Red Hat published a script to check the vulnerability of the system to Spectre and Meltdown. Kernel upgrade and activation/deactivation of some features is enough for avoid from these ...
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0answers
24 views

Does perf work on Red Hat 6.7?

My company is stuck on Red Hat Enterprise Linux 6.7. Running perf record ls as non-root results in an error: "Perf session creation failed." $ cat /proc/sys/kernel/perf_event_paranoid 1 $ uname -r 2....
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0answers
20 views

Cannot use Red Hat Optional channel with yum: repomd.xml not found

I need to install some packages that are in the optional repository channel of RHEL (like libtiff). I followed this instructions, but when I try to yum update I get this error: The issue is similar ...
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1answer
522 views

Red Hat Virtual Box: Network is unreachable

I installed a RHEL virtual machine with Virtual Box and I can't ping my host computer nor internet. I configured 2 adapters: Attached to NAT, promiscuous allow all and cable connected Atteched to ...
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0answers
16 views

Record events with auditd which run with WinSCP - RHEL 6.9 (Santiago)

I want to know if I there is a way to audit the events done over SFTP protocol on a linux server RHEL 6.9. Thank you, Iulia
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0answers
162 views

CentOS - Can't change ifcfg file in /etc/sysconfig/network-scripts

For the life of me, I can't figure out how to change an interface config file in a VM: sudo vim /etc/sysconfig/network-scripts/enp0s3 won't write and sudo bash -c "echo 'dog' >> ./enp0s3" fails ...
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2answers
149 views

sudo not working (accidentally deleted libz.so.1)

I have a Redhat 7 system and accidentally deleted the libz.so.1 symbol link under /lib64 I thought I can relink it with the actual copy of libz.so.1.7 using sudo ln -s but found that sudo does not ...
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0answers
24 views

centos 7 how can i run xscreensaver using gdm?

I am running centos 7.3 and have been trying to run xscreensaver from my gdm session, so that the screensaver will run even when nobody is logged in on the console. I have googled so many different ...
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1answer
144 views

Why can't I connect to sqlplus when specifying the ORACLE SID and password from the command line?

I have 2 different Red Hat servers with Oracle 12c. On one of them, I can login to sqlplus by specifying the ORACLE SID and password from the command line: [root@server1 ~]# $ORACLE_HOME/bin/sqlplus ...
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1answer
53 views

host name to ip resolution is not using /etc/hosts file

I have defined some hostnames in /etc/hosts i.e. 192.168.15.20 example.com when I do ping example.com I get the reolved ip as the one defined in /etc/hosts but when I change this IP to another IP (...