Red Hat Enterprise Linux version 6 is a Linux distribution sold by Red Hat, Inc. for the enterprise market. It is used for both servers and desktops. Although the binaries are not freely available, the sources are, and so there are numerous projects which provide compatible rebuilds of RHEL, such as ...

learn more… | top users | synonyms

0
votes
1answer
1k views

Moving from nslcd to sssd on Red Hat to solve NSS MD5 issue

I have a problem with the latest version of Red Hat, nss/nscd does not accept MD5 certificates. Because of recommendations I am replacing nscd with sssd with this howto ...
6
votes
3answers
7k views

How come all LDAP users are shown with getent passwd?

We are using an LDAP server with both Solaris and RHEL servers and planning to migrate more servers over to RHEL. However we have an issue with LDAP on all Red Hat servers. When I type "getent ...
0
votes
2answers
178 views

how to configure default gateway

On a RHEL6 server I added a 2nd nic and have configured it to use a static ip on a different subnet. $ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric ...
0
votes
1answer
1k views

NFS not working on bonded NFS interface - mount.nfs: No such device

We have an error message when trying to mount NFS on a RHEL server. NFS works fine on all our other servers, but not on 2 freshly kickstarted servers with the error "mount.nfs: No such device". ...
0
votes
2answers
597 views

I'm unable to use rpmbuild to build nagios-3.5.0 RPM @RHEL6

I'm unable to build RPM w/ nagios 3.5.0 (last one that worked for me was 3.2.3): # md5sum nagios-3.5.0.tar.gz aeef195d2033cc362bf6cb972bcc8f07 nagios-3.5.0.tar.gz # rpmbuild -tb nagios-3.5.0.tar.gz ...
-4
votes
1answer
140 views

Linux File that lost it's attribute displaying only “??????” [closed]

In my Redhat Linux 6 I have a very strange file that doesn't leave the system no matter how I delete it "web.process" CANNOT BE DELETED. It's in /opt/folder/web/tmp/default/web.process This ...
2
votes
2answers
241 views

Best practices in keeping older versions of RHEL secure?

We are running RHN Satellite and RHEL 6.3 servers with a frozen RHEL 6.3-channel. What are the best practices in keeping older RHEL 6.3-servers secure? It is important that: We do not get new ...
2
votes
1answer
254 views

Find out limits of other user

On CentOS 6.4 / 64 bit - how to find the limits of the user "nobody"? Because I can not just su - nobody and call ulimit -a: # id nobody uid=99(nobody) gid=99(nobody) groups=99(nobody) # su - ...
3
votes
1answer
744 views

Why is ATLAS not detected on RHEL when I try a SciPy installation through pip?

I'm using RHEL6, Python 2.6.6, and trying to install SciPy through pip. [user@server ~]$ sudo pip install scipy <snip> atlas_blas_threads_info: Setting PTATLAS=ATLAS libraries ...
0
votes
1answer
786 views

Choosing bonding mode between RHEL server and two separate switches

I have one RHEL 6 server with two NIC ports (each Port is connected to different switch). I need to create bonded interface from those two physical ports. Which bonding mode should I use? I don't ...
1
vote
2answers
1k views

Home directories created with wrong Selinux context

[root@tst-01 home]# ls -Z drwxr-xr-x. ujjain users system_u:object_r:home_root_t:s0 ujjain drwxr-xr-x. johndoe users system_u:object_r:home_root_t:s0 johndoe The selinux ...
0
votes
1answer
93 views

How can I make the root logical volume smaller without problems and downtime?

[root@tst-01 puppet]# lvs LV VG Attr LSize Origin Snap% Move Log Copy% Convert lvhome vg00 -wi-ao 2.00g lvroot vg00 -wi-ao 38.75g lvswap vg00 -wi-ao 4.00g lvtmp vg00 -wi-ao ...
4
votes
1answer
147 views

How to prevent installation of incompatible rpm packages

I have two rpm packages wich should not get installed together. After googling around i assume there is no RequiresNot tag or something similar to specify incompatible packages in a specfile. What ...
-4
votes
1answer
369 views

Downgrade Openssh on RHEL6 [closed]

Is it ok to downgrade openssh from 5.3 to 4.3 in rhel6 as we are facing compatibility issue between openssh 3.1 client and openssh 5.3 server(SCP file transfer hangs). Please we cannot upgrade ...
2
votes
4answers
2k views

How to make RHEL have persistent local hdd name?

I have 2 identical Dell R720 servers running identical Oracle Enterprise Linux(RHEL)6.4. Both servers (supposedly) configured in exactly the same way. However, one of the servers is behaving ...
1
vote
1answer
268 views

Solaris SMF to Upstart on RHEL6

I am planning a migration from Solaris/x86 to RHEL6. Part of this migration will be migrating services from SMF to the RHEL6 equivalent, which appears to be upstart. While init.d scripts still seem to ...
0
votes
1answer
128 views

ip6tables TPROXY not working

I have a problem, I need to have to run a java program on a port < 1024. authbind and jsvc are no alternatives, it is simply decided not to use. But using ip6tables -t mangle -A PREROUTING -p ...
4
votes
3answers
5k views

Understanding RedHat's recommended tuned profiles

We are going to roll out tuned (and numad) on ~1000 servers, the majority of them being VMware servers either on NetApp or 3Par storage. According to RedHats documentation we should choose the ...
0
votes
1answer
141 views

Adding an interface-specific gateway

Desired result: Assign an interface-specific gateway in the circumstance that are also receiving general DHCP-supplied gateway settings. Current situation: Interface-specific gateway setting is not ...
1
vote
4answers
6k views

UNEXPECTED INCONSITENCY run fsck manually redhat

I erroneously restarted my server before completing a filesystem resize. Here's the command that ran successfully before restarting: lvresize -L -400GB /dev/mapper/vg_yavin-lv_home At boot, I get ...
2
votes
2answers
374 views

Reallocate Storage in Red Hat 6

Is it possible to (safely) reallocate storage space in /home to the root filesystem? $ df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_yavin-lv_root 50G 35G ...
0
votes
2answers
369 views

rm: cannot lstat `cd1/Linux/nic/UBUNTU11_64/âââ\033\nwâ·.αÃo': Input/output error

am trying to delete folder in My rhel machine , but is giving error like rm: cannot lstat `cd1/Linux/nic/UBUNTU11_64/âââ\033\nwâ·.αÃo': Input/output error folder permissions are rwx to all ...
9
votes
3answers
8k views

RHEL 6.4: Mode 1 channel bonding not failing over

I'm running RHEL 6.4, kernel-2.6.32-358.el6.i686, on an HP ML 350 G5 with two onboard Broadcom NetXtreme II BCM5708 1000Base-T NICs. My goal is to channel bond the two interfaces into a mode=1 ...
0
votes
2answers
705 views

RHEL6: Specify Rescue Method from initrd append options

I have a PXE menu configuration that I'm working on. It incorporates the RHEL6 Rescue option in order to perform repairs after booting from the network. The Rescue boot environment asks three basic ...
-4
votes
1answer
376 views

What are equivalent parameters of adduser debian command in RHEL6? [closed]

None of this options doesn't exist in RHEL6. /usr/sbin/adduser --disabled-login --gecos 'GitLab' git What is equivalent parameters for disabling account (no locking, it's different) and adding ...
3
votes
5answers
1k views

Server freezes while installing Redhat Enterprise Linux Server 6

We've tried both the first options Install or upgrade an existing system Install system with basic video driver When trying option #1, it gets to a screen that has a solid cursor about halfway ...
3
votes
1answer
955 views

Unable to set proxy to “subscription-manager repos --list” -command

I have RHEL6 system that is registered to rhn via subscription-manager. I'am trying to install package java-1.6.0-sun-devel which is in rhel-6-server-optional-rpms repository, According to this Redhat ...
2
votes
1answer
345 views

varnishncsa does not show any output

I have varnsih setup on my RHEL6.x. While the varnish, varnishlog and varnishstats show proper data varnisncsa does not log any data even when run without any options defined. I have lsofed all the ...
0
votes
1answer
9k views

What is the difference between init 6 and reboot on Red Hat / RHEL / CentOS?

In Linux, the init 6 command gracefully reboots the system running all the K* shutdown scripts first, before rebooting. The reboot command does a very quick reboot. It doesn’t execute any ...
1
vote
2answers
173 views

How can you prompt for the EULA in Kickstart?

I am trying to modify a Kickstart script so that it does not auto-accept the EULA (which it seems to skip right now.)
0
votes
3answers
293 views

Preferred way to add a new name server to a host in Red Hat or CentOS

I am managing a particular host machine, and I would like to locally add a new name server for it to query (i.e. not changing its name server settings via the dhcp server). It seems that there are ...
0
votes
1answer
41 views

How is it determined which name server will be used for a particular interface?

According to the documentation for interface configuration files in RHEL 6, an interface can specify which name server it would like to use by including the directive DNS{1,2}=address . The ...
0
votes
0answers
71 views

strange behavior start / stop scripts apache

I noticed a strange behavior of Apache on my own Amazon installation of a RHEL 6.4. After launching a Red Hat Enterprise Linux 6.4 AMI I installed the http package with yum, configured apache, and ...
1
vote
1answer
271 views

Apache forces Cache-Control: private automatically for HTTPS requests

I'm trying to get browsers to cache assets over HTTPS. I am using MD5 fingerprinting method to allow long-term caching and I have this part working OK. What doesn't work is setting the Cache-Control ...
0
votes
0answers
412 views

Setting up computational cluster using infiniband fails

My task: I need to assemble computational cluster, consists of two nodes using infiniband technology. When I try to start mpirun ... for two nodes, the process hangs. If i try to use flag ...
-1
votes
1answer
4k views

NTP can't synchronise or find a suitable server

The problem I'm trying to solve is that NTP won't synchronize: $ sudo ntpstat unsynchronised time server re-starting polling server every 64 s Edit: Here's some ntpq output: $ sudo ntpq -c ...
1
vote
2answers
1k views

Why is raid-check using so little io bandwidth?

Just out of curiosity, we have a RHEL server running software RAID. There's a cronjob which kicks off a raid data check every so often to check the consistency of the array. From my understanding, the ...
0
votes
2answers
420 views

rpmbuild missing from rhel 6.3

I have a fresh new RHEL 6.3. I cannot access internet and because of this I cannot use yum. I would like to use the RPMs I get from the Red Hat package (2 discs full or RPMS). These are all files ...
0
votes
1answer
409 views

Linux/RHEL Server Down with “xinetd” Alerts?

Suddenly one of my RHEL 6 Server [VM] (serving Apache on it also) went down and when i rebooted it, i saw several of following /var/log/messages as latest before it went down: May 4 08:16:37 ...
7
votes
3answers
11k views

Human readable format for http headers with tcpdump

I would like to view the HTTP headers sent from Apache (listening on port 80) to Tomcat (on port 4080) in a Linux machine. According to Wikipedia, Header fields are colon-separated name-value ...
0
votes
1answer
170 views

Which partition utility's output is correct?

I have Fusion ioDrive2 785GB (731.088 GiB) SSD card. The server is running Oracle Enterprise Linux 6.4 (RHEL6.4 compatible). It is low-level formatted as such: "80% factory capacity" Format ...
0
votes
1answer
3k views

How to enable eth0 on a cloned RHEL VM running in Windows Server 2012?

Due to a critical personnel shortage, I (not a willing sysadmin!) have been given a RHEL 6.1 VM image with the request that it be migrated to a server running Windows Server 2012 with HyperV. The ...
0
votes
1answer
886 views

Error: partition length of 6442450944 sectors exceeds the loop-partition-table-imposed maximum of 4294967295

I'm trying to create a partition on a RHEL 6.3 machine, but parted is giving me the following error: $ sudo parted /dev/vdb mkpart logical 1 Error: partition length of 6442450944 sectors exceeds the ...
0
votes
2answers
922 views

iDRAC7 - discover Host Name, OS Name, OS Version when running RHEL 6?

Just picked up a Dell PowerEdge R720 which comes with an iDRAC 7, and am wondering how to get the host operating system (Red Hat 6) to automatically report the hostname, os name, and os version to the ...
1
vote
1answer
683 views

Rsyslog unix timestamps on RHEL6

I'm trying to get rsyslog on RHEL 6 to render the time the message was logged at as a unix timestamp. I started by read the documentation at http://www.rsyslog.com/doc/property_replacer.html. Since ...
2
votes
3answers
2k views

YUM install tigervnc-server fails on RHEL 6.1

Installing tigervnc-server fails on RHEL 6.1 with the message below. One person recommended installing all of the xorg-x11 packages, but that gives the same message (below too). Do I need to add new ...
1
vote
0answers
1k views

Mount updates /proc/mount but not /etc/mtab, making partition not show up in df, mount listing

I'm on RHEL 6. I created some partitions using parted, formatted them using mke2fs, and mounted them using mount. I also added them to /etc/fstab. However, they do not show up in the mount or df ...
1
vote
1answer
388 views

Apache 2.2 Ldap Authantication error 500 - AuthLDAPURL

I have an Apache server on RHEL 6 that uses our active directory for authentication, We added a new "LocationMatch" AuthLDAPURL ...
0
votes
1answer
951 views

partprobe will not work..i have tried everything

I am days before the RHCSA exam and i have noticed i still haven't been able to successfully run partprobe successfully after months on testing and testing and testing..not a single time I have tried ...
7
votes
1answer
704 views

How can I use SELinux to confine PHP scripts?

I want to compartmentalize different PHP applications on my SL6.4 (RHEL 6.4 rebuild) web server so that they cannot access each others' data. It seems that SELinux might be able to do this, but I am ...