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

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RHEL 5 box constantly displaying NIC statistics on console screen, how can I disable this?

I have a RHEL 5 box that is constantly displaying nic statistics on the console screen when using the KVM. This makes it very hard to do any troubleshooting when the box goes down as these statistics ...
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2answers
11 views

recommended storage location for multiple users [duplicate]

Is there a conventional location to store non-secret bulk files that can be accessible by multiple users? I know that I can create a new folder (and set the right permissions) in most places in the ...
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1answer
22 views

Is there any way to install MySQL 5.1 and PHP 5.3 on Centos 7

Is there any way to install MySQL 5.1 and PHP 5.3 on Centos 7. I researched a lot but could not find any link which gives step by step procedure. Can someone please give me steps to be followed to ...
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Unable To Bridge Two Teamed Interfaces - Advice?

Before the wall of code I'll explain the situation. I'm trying to set up two interfaces to be teamed together, and from that team create a bridge. I've been studying for the RHCE and I believe this ...
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2answers
3k views

How to access the Local FTP YUM repo from client Machine

I setup the FTP server on Machine A 192.168.1.105 and created the YUM repo. And placed following contents in it. #vi rhel-localftp.repo [rhel-localftp.rep] name=bla bla bla ...
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1answer
12 views

How to open server port on RHEL 6.6?

I am trying to open a port (tcp 27017) for access to mongodb on a newly created RHEL 6.6 instance at Amazon AWS. Following mongo docs, I did: sudo semanage port -a -t mongod_port_t -p tcp 27017 I ...
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9 views

Strange hang while attempting mounting LVM2 in recovery mode

I am running a RHEL 7 vm and I am trying to mount an LVM disk in recovery mode. I can see the disk with fdisk -l. lvscan shows it being active. When I try to mount the disk to the system I see the ...
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1answer
2k views

RHEL 6.4: Openssl 1.0.0-27 libcrypto and libssl missing

I am trying to install znc IRC bouncer, which needs openssl libraries: Error: Package: znc-1.4-1.el6.x86_64 (epel) Requires: libcrypto.so.10(libcrypto.so.10)(64bit) Error: Package: ...
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14 views

undefined symbol inflateEnd while using ssh

I am getting an error while doing ssh from one Linux server to another. Both are running on RHEL 6.2. server1$ ssh server2 ssh: symbol lookup error: ssh: undefined symbol: inflateEnd How to resolve ...
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1answer
433 views

Spike in swap utilisation without high swap rate

Every Saturday, for reasons unknown to me, one of my servers experiences a spike in swap utilisation. It's not necessarily a problem as there is plenty of free memory available, but I'd still like to ...
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1answer
15 views

FreeRadius : Logs not being generated in radacct directory

I have installed and configured freeradius on Red Hat Enterprise Linux 6.5 as per this guide. I have found that, everything is working fine, but no logs are generated in the /var/log/radius/radacct ...
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3k views

Some Ossec agents not able to communicate with OSSEC server

I have installed Ossec on one server and agents on some other servers running on Redhat. The issue is that some servers are able to communicate and send the logs to servers and others are in INACTIVE ...
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2answers
54 views

Building a Read-Only Linux System With a Writable Layer in RAM

I have a requirement to boot RHEL 6.6/7.0 into read-only mode with a writable layer only in RAM. I believe this is similar to how live CDs work, in that the file system is read-only, but certain parts ...
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1answer
494 views

GDM will not start on boot, unable to login into graphical interface

I am running RHEL 5.8 . SELinux is enabled but in permissive mode. Here are some snippets from /var/log/messages on boot. kernel: type=1400 audit(1360613500.551:6): avc: denied { write } for ...
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1answer
27 views

Does dm-multipath schedule I/O?

I have a multipath device I'm interested in: [root@xxx dm-7]# multipath -ll mpathf mpathf (3600601609f013300227e5b5b3790e411) dm-7 DGC,VRAID size=3.0T features='1 queue_if_no_path' hwhandler='1 alua' ...
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1answer
78 views

How to use both syn proxy and connlimit rules with iptables?

I want to write both syn proxy and connlimit rules. I want to send packets to syn proxy first because of performance issue. Here is rule sample. I use bridge interfaces but I dont think it is ...
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1answer
891 views

How do I resolve the url timeout error when running a yum command?

I'm trying to upgrade SVN 1.6 to 1.8. When I run the commands: yum install mod_dav_svn subversion I get the following error (after a short pause): ...
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converting teaming to bonding

RHEL 7 contains bond2team tool but it doesn't contains opposite team2bond tool. I need to convert my teaming files to bonding (please don't ask why, this is for testing purposes). This is my teaming ...
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1answer
27 views

How do I install some required libraries for a program without sudo?

I am trying to run a program on a computer running Red Hat 6.5. This results in the three following errors: "/lib64/libc.so.6: version `GLIBC_2.14' not found" "/usr/lib64/libstdc++.so.6: version ...
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1answer
4k views

NFS Mounting Error

From ServerA I shared directory /u001/app/oracle/FolderA and trying to mount this on SeverB under /media Contents of ServerA /etc/exports file /u001/app/oracle/FolderA ServerB(rw,sync) When I ...
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570 views

Why when I ssh into one server it shows bash and the other have my username?

So at work I have two web servers that I am able to ssh into. Both are RHEL 6.5 When I log into one, it shows this: [username@ldvweb01 /]$ When I log into the other one it shows: -bash-4.1$ ...
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27 views

What is the first event/file/log in linux that appears/changes on boot that signalizes network being up?

I have a vSphere farm with virtual machines and python script that handles cloning and managing of those VMs. I also have a machine (RedHat 6) that I clone if I need a new one. It has a script that ...
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1answer
12 views

How nginx receives requests from client and forwards it to the actual server?

I have installed nginx on RHEL and now I need to configure it to forward the requests to the actual server in the /etc/nginx/nginx.conf. My actual server is using a private IP address, will nginx ...
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1answer
18 views

How to add shared Printer on Redhat

One of the customer requested to enabled Printer Sharing between Redhat Linux Server and the Printer which is shared on one the Windwos 7 Machine. The path they provided is ...
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18 views

CentOS 7 very slow boot up after changing NIC

I have created a VM in VMWare esxi. I then cloned the VM, the clone receiving a new NIC along with a new MAC address. I change the IPADDR, HWADDR, and BOOTPROTO values and reboot the cloned-VM. ...
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2answers
854 views

How To Locate Dependencies Needed by RPM Packages

I am trying to deal with keeping our RHEL 5 server patched up, but also dealing with our security constraints. This particular server is not allowed to talk to the Internet. So yum isn't really an ...
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1answer
34 views

Troubleshooting HAProxy on RHEL7

I am on a RHEL7 system. I am new to haproxy. I think I have some sort of problem. Here is address that I'd like to use. [root@haproxy-el7-001 haproxy]# grep 1936 /etc/haproxy/haproxy.cfg bind ...
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15 views

Formatting SAN space before Multipathing

I'm having to do some data transfer from some old SAN space to some new. The SAN guys pulled one of paths from my system, and placed it on a new array. So now I have one path going to my old stuff, ...
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2answers
31 views

Can't browse Internet in Redhat 7

I installed RHEL 7 using server with GUI with no added option on my local virtualbox, but I cannot get Firefox connected to the Internet. I checked /etc/resolv.conf contains nameserver setting I ...
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1answer
3k views

Could not open /dev/vmmon: No such file or directory

I've installed VMWare Player 6.0.1 build - 1379776 on a Red Hat Enterprise linux Server release 6.1 Beta ( Santiago ). When I attempt to start my virtual machine, I get the following the error: ...
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2answers
337 views

Mailman / Postfix Configuration Assistance

I am writing for some help regarding Postfix configuration. I cannot seem to get Postfix configured properly to transfer mail to the mailing list installed on the same server. I followed many steps ...
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2answers
23k views

CentOS - install using yum Apache 2.4

I need Apache 2.4 in CentOS because with Apache 2.2 mod_proxy_wstunnel is not possible. I have tried https://fedorahosted.org/SoftwareCollections/ but unfortunately its for RHEL after installing i ...
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3answers
12k views

Why SSH takes a long time to Connect

I have noticed that some Linux Servers in Network takes long time to connect using ssh. Situations: There are two situations I have faced: On some servers some times it takes a long time to ask ...
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1answer
496 views

Installation of QEMU, GCC for ARM in RHEL

We are setting up a lab which has the QEMU system to emulate an ARM processor and run assembly programs. The lab is currently setup with the host operating system as Ubuntu. We are migrating the lab ...
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1answer
527 views

how to have root partition LVM for RHEL 5.8 64 bit on AWS EC2

I am new to this and I have to create a RHEL 5.8 Amazon Machine Image (AMI) in which the root partition should be a logical volume. I know how to create a data partition as a logical volume but am not ...
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41 views

governor can't be set

RHEL 7. I'm trying to set cpufreq_performance governor but by some reason it doesn't work: [root@localhost]# cpupower frequency-set -g cpufreq_performance invalid or unknown argument ...
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570 views

How can I make the eth1 up and always available for remote access, where eth0 will be used for host to host IPSec VPN?

I am running Amazon EC2 instance with Red hat enterprise linux, where I have two network interface. Now: eth0 is currently active having public ip where I am remotely logged in via SSH, to ...
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RedHat machine will not boot when video card is removed

I "inherited" RH 6.4 on a computer with an nVidia video card. I took the image and dd'd it to another computer that has the same hardware. By design, the second computer will be headless. This ...
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Will I be able to install a service as a sudoer?

I will need to install a custom application as a service on a RHEL 6.2 box this weekend. Will I be able to do this with sudoer powers or will I need the root password for anything?
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1answer
40 views

Port Forward :80 and :8080 to Two Different Servers

On a CentOS 6 server with an IP address of 172.16.1.10, how can I configure iptables to route traffic destined for 172.16.1.10:80 to 192.168.1.10:80, and traffic destined for 172.16.1.10:8080 to ...
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1answer
16 views

rhel freezing after startup

I am new to linux. I installed rhel6 few days ago.it was working fine but today it showed notification that your gnome is missing some configuration. Now whenever i start pc it freezes at rhel 6. any ...
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24 views

Compatibilty of the following softwares

I am a professor (Mechanical Engineering department) at a college which is making the transition from Windows to Linux. However, we are quite unsure whether all the CAE softwares that we use would be ...
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1answer
35 views

RHEL7: Why does 'nmcli conn show' & 'ip addr show' display different connections?

My 'nmcli conn show' & /'etc/sysconfig/network-scripts' config files don't match up, showing just one connection/devices of each: [root@ciroc network-scripts]# ls |grep ifcfg ifcfg-enp0s3 ...
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How to boot Linux to command-line mode instead of GUI?

I am using 32-bit Red Hat Linux in my VM. I want to boot it to command-line mode, not to GUI mode. I know that from there I can switch to GUI mode using startx command. How do I switch back to ...
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3answers
2k views

How to install Redhat using the iso image stored on Network

This is the case. I want to install the Redhat 5.6 on my system. But this time i dont want to use the actual DVD but this time i want to install it using the iso image stored on one of our server HDD. ...
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29 views

Can I install ALL required rpm to run wine without root permission?

I am logged in on a redhat linux computer, and I don't have root permissions. I have tried running/installing wine on a folder using ./configure , which outputs: configure: error: X 32-bit ...
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1answer
34 views

bashrc behaviour differs when opening a session or opening a terminal

I'm using RHEL 6.6. I got a problem configuring my .bashrc file. I have a sudo su - dummy followed by an exit in it. When I open a terminal, the current user is changes to dummy. If I type exit, I go ...
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19 views

What is a good way to globally install packages with npm on a RHEL-based distro?

I am running into an issue where node.js RPM packages from Fedora's repository and packages installed with 'npm install -g ...' are both being installed in /usr/lib/node_modules (npm itself being ...
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3answers
3k views

RHEL:Change Screen Resolution of Virtual Console

I am working on a RHEL 6.3 Workstation. And the monitor is a HD AOC Monitor. Problem I am facing is whenever this machine starts up, it runs with maximum screen resolution. It is a big screen and ...
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30 views

How to force rpm and yum to fail if a GPG signature is missing or cannot otherwise be verified?

How can I force rpm and yum to fail if a GPG signature is missing from a package or otherwise cannot be verified due to a missing key? For the example below, assume the RPM has been signed but the key ...