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 ...

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votes
1answer
201 views

What are the dependencies of sssd/nscd to function?

What are the dependencies of sssd to function as an LDAP-client? What are the dependencies of nscd to function as an LDAP-client? Does sssd need openldap to function as an LDAP-client? Does nscd?
0
votes
1answer
106 views

What are disadvantages of using nsswitch compat?

In my current LDAP set-up "getent passwd" shows all 600+ users that exist in the LDAP, not enumerating only the 20 LDAP-users that have permission to access this netgroup/server. This can be solved ...
0
votes
1answer
56 views

Unchangeable xscreensaver configuration?

I have a requirement that all desktops lock after a certain amount of time. However, all of our users have the possibility of using different DEs or windowing systems, so I went to xscreensaver as a ...
0
votes
2answers
373 views

MySQL won't start: “Can't start server : Bind on unix socket: Operation not permitted”

Running a minimal Centos 6.0 build as a vagrant box, with SELINUX=permissive. Right off the bat, performing a "yum install mysql-server" and then "service mysqld start" it fails. Inside ...
0
votes
1answer
360 views

nginx repomd.xml 404 Not Found

I set up the nginx repository as specified at http://wiki.nginx.org/Install [nginx] name=nginx repo baseurl=http://nginx.org/packages/rhel/$releasever/$basearch/ gpgcheck=0 enabled=1 When I try to ...
0
votes
1answer
58 views

Users seeing all other LDAP users on RHEL default behavior?

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 we type "getent ...
4
votes
4answers
1k views

PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/gd.so' undefined symbol: gdImageWebpCtx in Unknown

We're running RHEL6 and just started getting this error when restarting php-fpm. PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/gd.so' - /usr/lib64/php/modules/gd.so: ...
2
votes
1answer
121 views

Linux device names: What other non-standard storage device names are there apart from /dev/cciss

This is a question about Linux storage device names on RHEL5 and RHEL6 Most storage devices are accessible using device names /dev/sda, /dev/sdb, etc. By storage device I mean a device that could be ...
0
votes
0answers
63 views

Assistance required configuring /server-status on apache — keeps getting caught in redirects

Good Morning, I'm trying to configure server-status on my servers, so that I can connect them to Solar Winds monitoring. (No jokes, it's not my choice!) I thought that I could just drop a new .conf ...
0
votes
2answers
415 views

Should rp_filter sysctl parameter be set on bonding master or member slaves?

I have a server running RHEL6.4. I need to configure .rp_filter sysctl parameter for my server's private interconnect. This server has 2 NICs bonded together. I looked through the documentation and ...
0
votes
1answer
626 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 ...
5
votes
3answers
4k 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
115 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
764 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
375 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
126 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
164 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
194 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 - ...
2
votes
1answer
340 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
394 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
699 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
81 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
121 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
218 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
1k 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
182 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
107 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
2k 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
93 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
3k 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 ...
1
vote
2answers
150 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
200 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 ...
8
votes
3answers
5k 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
353 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 ...
-5
votes
1answer
277 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 ...
2
votes
4answers
976 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 ...
2
votes
1answer
476 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
196 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
3k 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
111 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
172 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
40 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
64 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
155 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
287 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
2k 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
712 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
214 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
238 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 ...
1
vote
2answers
3k 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 ...