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

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RH : Unable to change permissions on a mounted FS

I've got a mounted CIFS share on a Red Hat folder where I can't change the permissions. I have some others shares where everything is working fine but for this one, I can't change the permissions. ...
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2answers
83 views

yum/rpm inconsistencies

I'm using RHEL 5 (64-bit) and have come across an inconsistency with rpm/yum. When I attempt to install a 32-bit RPM, I'm told the RPM is already installed when only the 64-bit version exists on the ...
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127 views

Best practice for installing Oracle 11g R2 on CentOS 7 / RHEL 7

I am a new user. I tried to log into chat to ask advice in framing this question, but I need at least 20 reputation points to participate in chat, so I am asking here with the intent of improving my ...
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1answer
38 views

How do you install Ack-Grep on Red Hat Linux 6.5?

I'm not sure how to install ack-grep for redhat linux 6.5. Google only returned results on how to install it for mainly centos and ubuntu only. But what about Redhat? Why isn't there that many users ...
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1answer
88 views

Decoding ASN.1 messages using Openssl asn1parse tool

I am using openssl asn1parse tool over RHEL, I have my own ASN.1 abstract syntax file, called TestModule.asn1, when I am trying to parse a message using following command: openssl asn1parse -inform ...
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2answers
93 views

Why does root need to enter a password when executing specific commands?

On a certain RHEL5 machine, when root is executing commands such as passwd someuser or any other privileged command, the root password is requested for verification and the command can't be executed ...
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1answer
32 views

Automatically set append attribute for newly created files/folders?

I'm trying to setup a folder so that users can only create or modify files/folders in it, but not delete them. I tried the 'chattr +a' command and got different results in RHEL5.8 and RHEL6.5 ...
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7 views

How to permanently set a password for ipaserver client accounts

I want to setup a password for RHEL/Centos ipaserver client accounts but it seems I have to keep manually resting it on the ipaserver host. Is there a way to persistently set it?
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1answer
33 views

NFS COMMIT operation not being invoked despite fsync being used

I have been doing some elaborate testing to determine if our NetApp NFS (v3 protocol) server in async mode properly honors the client's fsync request. I've hit a wall when I discovered that Linux ...
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2answers
35 views

Efficient way to deploy a custom kernel onto multiple hosts

I recently had to do a custom build of the Linux kernel from its source. That custom kernel is now installed on the machine I used to build it and works fine. Now there are other similar systems ...
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2answers
54 views

Could the compile procedure be the real difference between Red Hat EL and CentOS? [duplicate]

The last few days I'm itching to change the distribution I'm using for years, Debian. Since stability is of major importance for me and I'm not interested in bleeding edge features, I've decided to ...
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1answer
61 views

Jre installation have no /usr/bin/java file?

I need to install a specific older version of JRE on a RedHat machine. So I downloaded jre-1_5_0_10-linux-i586.rpm and copied it into /opt/local. Then I ran sh ./jre-1_5_0_10-linux-i586-rpm.bin and ...
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2answers
151 views

Permission denied after changing password (password is correct)

I'm currently trying to configure a system where the initial install was done by someone else. I could ssh into the box, and while on it, added some groups to me account and changed my password (I ...
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1answer
109 views

RHEL6 && OEL6 How is $DISPLAY determined on startup?

I'm experiencing inconsistent $DISPLAY variables on my OEL6 servers which have caused quite a bit of trouble with socket files. I have found surprisingly little on what actually sets the environment ...
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67 views

e1000 driver update with interfaces gone

Intel server with 3 LAN cards. Board Mfg : Intel Board Product : S5000PHB 06:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06) 06:00.1 ...
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0answers
31 views

Methods to find out what remounts /sys readonly (RHEL 6.7)

A few colleagues intermittently have issues with suspending/hibernating their computers (running RHEL 6.7, normal workstation install, nothing special). As it turned out, the problem was that /sys was ...
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31 views

failure at starting on postgresql

I installed a postgresql database on Redhat 7.1 and I decided to move the database on a ISCSI device (LUN) inside a logical volume, mounted at starting of the machine (xfs formatted). The mounting ...
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1answer
17 views

Installing from via terminal (YUM) vs using GUI with dependencies

Hello I'm using Red Hat Enterprise Linux Server 6.2, I'm having issue installing package in via terminal. I already have packages in specific folder including the dependencies. For example, when i ...
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1answer
210 views

How to resolve 'netlink: 12 bytes leftover after parsing attributes.' in syslog on Red Hat Enterprise Linux 6.5?

When I install customized RHEL 6.5 with no GUI, on the Virtualized Platform like Esx Server. I am constantly getting, kernel message netlink: 12 bytes leftover after parsing attributes.. And this ...
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36 views

Downgrade libxml2 on RedHat 6.7

In this case we have two servers with different version of RedHat: 6.6 and 6.7. The libxml2 version is: [root@Redhat_6.6 ~]$ rpm -qa |grep -i libxml libxml2-python-2.7.6-17.el6_6.1.x86_64 ...
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2answers
73 views

Mysql server not starting

I installed Mysql server 5.7.9 on RHEL 6.5 using mysql57-community-release-el6-7.noarch.rpm Repo. And installation was successfull but when i try to start it up and gives errors. And from ...
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34 views

Linux login me in bash with message of unavailable resources

I'm kinda new in Unix and I face this issue for first time. So I logged in one linux box today and I got this message -bash: fork: Resource temporarily unavailable -bash-2.05b# As I understand ...
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1answer
102 views

Apache can't access file while is has permission

I don't want to allow others read access, so I have added my user and the apache user to a group called apachme and then set that group to all the files and folders I want apache to have access to, ...
2
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1answer
68 views

where can I find the disk latency using iostat ( await, svctm, %util )?

I'm using Redhat Linux 6.5 and would like to see the disk latencies for the used disks. Using iostat I get the columns await and svctm ( including %util ). But according to the man page of iostat ...
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1answer
275 views

Why won't the correct new version of Node.js install on CentOS 7?

Note: This is partially solved, but needs a little more attention. See notes at bottom of OP, and @Digisec's partial answer. I am trying to set up Node.js on CentOS 7, but the following commands ...
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1answer
47 views

Cgroups Memory Related Questions

1) Why cgroup is showing more number of tasks than actual number of tasks.? Ex : [root@localhost proc]# ps -aux | wc -l 421 [root@localhost proc]# cat /sys/fs/cgroup/memory/tasks | wc -l 539 2) ...
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12 views

Google map api and rhel proxy server

I have a RHEL virtual server that connects to our corporate environment via a proxy server. Using a Google Map API from my desktop, which sits within the corporate environment, retrieves data ...
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57 views

FIPS mode, signature verification failed

I am building a kernel with FIPS mode on. I followed most of the procedures described on Red Hat documentation here. I also created a hmac signed .vmlinuz file. After installing dracut-fips and ...
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1answer
25 views

unable to detect newly added lun in rhel4

Unable to detect newly added lun in RHEL4 running with 2.6.9-103.ELsmp..Tried LIP protocol but that didn't helped echo "1" > /sys/class/fc_host/hostx/issue_lip Any help is appreaciated
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2answers
34 views

Problem in installing new software - RHEL6

I am currently having difficulty in installing new software/plugins on my rhel6 work pc. I don't have any internet connection on it and have to download anything I require on a separate internet PC ...
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30 views

Command Samba Mount with Multiple Users

Samba share from server is mounted on my RHEL 7 system via root user. RHEL 7 system have a few non-root users(e.g user1,user2 and so on). Users (user1 and user2) can create, modify and delete the ...
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1answer
13 views

Red Hat 7 GDM + NIS Only Validates First 7 Characters of Password

I've come across an interesting issue this morning. We have noticed that GDM on RHEL 7 is allowing us to log-in with only the first 7 characters of password. We can enter anything or nothing from ...
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20 views

How can I gracefully power down an old PCI system

I have an old PCI server with that has three RHEL 6.5 segments, and I have yet to find a way to power the system down properly. I tried both halt and poweroff and they bring the entire system down. I ...
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0answers
15 views

Recreating local selinux contexts after OS Reinstallation

We have added a few specific contexts to our SELinux via the "semanage fcontext ..." command. The patterns are stored in /etc/selinux/targetd/contexts/files/file_contexts.local. Assuming that we ...
2
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1answer
30 views

Recover full command that generated core dump

A program I am working on is crashing and generating core dumps. I think that the issue is related to the arguments that it's being called with, some of which are automatically generated by another ...
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24 views

Permanently Configure two X Servers

I'm trying to permanently configure a second X server to start at runtime on RHEL 7. I am aware that I can start a second x server using startx -- :1 vt 2, but I'd much rather integrate it to the ...
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32 views

Service in RHEL server stops working after a while

I have a RHEL 6 server running with several services (I mean, I have made the server scripts and the programs they run). I have a problem with two of them. I will try to explain the problem and then ...
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29 views

Cannot start Acronis MMS server

I have a problem with my Acronis on my linux When a try to start ./acronis_mms start Starting Acronis MMS: [ OK ] but when I want verify if this service ...
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105 views

Is there a way to use epel and local yum together

I am using RHEL7. If I do a fresh install of RHEL7(with connected internet) and then installing epel rpm. All the packages are getting installed after that. But then few packages have dependencies ...
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0answers
35 views

How does Grub Stage1, exactly, access/load stage 2? [duplicate]

This is my first ever question, I have put this question in front of Red Hat Instructors but didn't find any satisfying answers. I'm using RHEL/CENTOS6, GRUB Legacy 0.97, and have consulted heaps of ...
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13 views

Rsyslog not creating dynamic directories

I have Red Hat Enterprise Linux Server release 6.5 running rsyslogd 5.8.10 I'm trying to collect logs from a remote client (VM1) and I have the following line configured if $inputname == 'imudp' ...
3
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1answer
57 views

Why can't my servers talk to each other over direct ethernet connection?

I have two servers running RHEL 7.2. Each have 2 NICs. One NIC talks to a switch, and other is a direct connection between the two servers. One of the servers will be an NFS server, and the second ...
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2answers
208 views

Why are .so packages provided by the devel packages?

I've seen an interesting pattern in RPM packaging. The main library package will include the shared library itself: /usr/lib64/libavcodec.so.54 The -devel package will provide headers and a ...
0
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1answer
68 views

rsync failing to exclude directory [duplicate]

We are using rsync to copy files from one location to another location on a different host. We want to exclude a directory from the source location so that files from this directory are not copied . ...
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2answers
68 views

My ssh key doesn't work, permissions look good [duplicate]

My permissions look like this: -rw-------. 1 smpadmin staff 400 May 21 2014 id_rsa.pub -rw-r--r--. 1 smpadmin staff 505 Dec 14 19:19 known_hosts drwxr-xr-x. 45 smpadmin staff 4096 Jan ...
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1answer
48 views

Does “defaults” option include “acl” option in /etc/fstab?

I'm working with ACLs on CentOS 7 and noticed that the partition (/) where ACLs are applied is mounted with defaults options. As far as I know ACLs need that the acl option is enabled in the mount, ...
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1answer
82 views

Mount CIFS shares as non-root on RHEL7 w/o desktop

We have a Windows (AD) domain which a RHEL/CentOS 7 server has joined (SSSD / realmd). The users log into the server via SSH with their AD credentials. Now the users should be able to mount some of ...
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41 views

sar/sysstat output logs to a 2nd directory

We're running RHEL on one server and I need to report some stats about the machine. sysstat/sar does a great job but I need the logs to report starting with 6am until next morning at 6am and output ...
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31 views

localize banner message on login screen in gdm 3.8 and above

I am using dconf db to set the banner message as follows: Create a gdm keyfile for machine-wide settings in /etc/dconf/db/gdm.d/01-banner-message: [org/gnome/login-screen] banner-message-enable=true ...
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0answers
57 views

gdm Pop-Up Window on Login

So I was using a bit of bash script to get a popup window to appear on login for our RHEL 7 machines. I put the following code in "/etc/gdm/PreSession/Default". /usr/bin/zenity --warning ...