Scientific Linux ("SL") is an Enterprise Linux distro based on Red Hat Enterprise Linux.

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How do I automate suppling the network location of the kickstart config file when booting a Redhat variant 7 install iso

When booting a Scientific Linux 7 install iso for example, one could immediately hit tab and add some text to specify the location of the ks.cfg file they would like to use. I would like to automate ...
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1answer
229 views

How can I coax RHEL / CentOS / SL 7 into booting normally with degraded software RAID 1

I set up a new server (my first with this version of Linux). I installed a pair of 160 GB blank SATA HDDs (one Seagate and one WDC, but with exactly the same number of LBA sectors) in an old machine, ...
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1answer
80 views

Samba server increasing the memory requeriments

I have a Samba server exporting a entire filesystem (fhgfs/beegfs filesystem), total amount of 550 TB. The specifications are the following: Scientific Linux 6.5 (2.6.32), 2xIntel Xeon X5570 8 (2.93 ...
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1answer
124 views

Production servers can suddenly not access the internet anymore

Problem All Production Servers were suddenly not able to access the internet anymore, while four other Servers connected to the same VLAN and same eth0 settings can. Figure 1: System 1 represents ...
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2answers
57 views

How to install one package on multiple nodes using Spacewalk?

Currently, when one package would like to be installed on multiple nodes using Spacewalk, a system is selected in the System Overview, an install installable package is searched in the software menu, ...
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16 views

3ware: Raid rebuild error

I am using 3ware adapter. I have 7 disk in my server I created raid-6 with 6 disks and one is hot spare. To test whether it is working or not I removed one of the disk from Raid-6 then it took hot ...
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79 views

ELSA configuration

I have an ELSA install I'm trying to get working on Scientific Linux 6.4, importing logs from a local OSSEC server (i.e. they're on the same server). I've followed the documentation such as it is, and ...
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1answer
942 views

Why is Linux kdump not writing to /var/crash?

It's happened again! I have 4 servers which are crashing periodically, and there is no information printed to the system logs or the serial console. In addition, the Linux kdump service isn't writing ...
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2answers
640 views

Anaconda kickstart and rootpw option

I've tried a few different methods of generating an encrypted password on SL 6.5, but nothing seems to work for me. I'm not finding any errors anywhere in the various /var/log/anaconda* files, but I ...
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2answers
554 views

Using `repomirror` to mirror a yum repository for a different OS version?

I have an EL5 machine. On this host I would like to mirror a Puppet repository for EL6 rpms. How can I mirror an EL6 or Fedora repository on an EL5 host? I am using reposync because I only need the ...
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543 views

Disable auditd immutable mode without rebooting

Hello I've been tasked with fixing up a auditd policy but it's on a server that's actively being used and the policy installed was set immutable. I've tried searching and everyone recommends rebooting ...
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883 views

Windows 7 NFS Client Using Kerberos and Linux KDC

I am trying to configure a Windows 7 Enterprise client to mount a NFSv4 share on a Linux NFS server using Kerberos and a Linux KDC. The setup is: IPA Server (OS: Scientific Linux 6.4, Pkg: ...
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1answer
378 views

VMware Tools are installed but inactive. Scientific Linux 6.4, ESXi 5.1.0, vCenter 5.1.0

Basic information: VM OS is Scientific Linux 6.4 x86_64, installed as minimal, with network-support and access to EPEL repository. Hypervisor is ESXI 5.1.0, build-1065491. I don't have the rights ...
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6answers
703 views

Can't use “eject” to identify the server

I'm a software engineer and our lab usually has several servers in a rack with a KVM switch. We're developers and we usually have several projects happening at once so the servers are frequently ...
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176 views

Scientific Linux - mysql and apache fail to start on reboot

Both mysqld and httpd fail to restart following a reboot of the server, although chkconfig --list shows both daemons set to on for run levels 2,3,4 & 5 All control is being exectuted via Webmin ...
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1answer
273 views

How can I check cron task it's running? [duplicate]

I put a cron script in /etc/cron.d: [root@node ~]# cat /etc/cron.d/reconfig 0 */6 * * * root /root/bin/reconfig.pl But I get no list of cron tasks for root: [root@node ~]# crontab -l no crontab ...
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2answers
1k views

RHEL Clones (Centos, Scientific, CERN) network installation on XenServer 6.2

I'm trying to install a Scientific Linux CERN 6 guest on XenServer 6.2 through the network with PXE Booting but it hangs in the message: mounting /tmp as tmpfs... done I'm not using the most ...
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1answer
64 views

Upgrading from Red Hat 4.x to Scientific Linux 6.x

I have a server running Red Hat 4.x. I am going to install Scientific Linux 6.x. The question I have is do the user directories and other custom directories that I have installed get overwritten ...
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225 views

What could cause Mailman to drop messages after moderator approval?

I run a medium-sized Mailman system that recently developed a problem where any messages that pass through moderation disappear instead of being delivered to the mailing list. This is affecting every ...
5
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1answer
1k views

Why is mount is forcing me to specify -t ext4 for one partition, but not the other?

I have two very similar partitions, /dev/sdb1 (labeled 'bigb') and /dev/sdc1 (labeled 'bigc'). I used to be able to mount both of them using mount -n -L bigX /mnt/donottouch/localX (with X being b or ...
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428 views

Unable to authentication after manual edit of /etc/passwd and /etc/shadow

On Scientific Linux 6.4 ( like CentOs6.4) When configuring a new server I have manually edited the file /etc/shadow so as to copy the password. Now I can only log in as user root and I can not use ...
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68 views

Lots of messages “kernel: RPC: Want update, refpage=120, age=xy”

I have a Scientific Linux 6.3 server that exports a network share via nfs4. This share is mounted through an ssh tunnel by several clients. The setup works reasonably well, but occassionally the nfs ...
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1answer
106 views

Cannot perform smartctl self-test after migrating servers from SLES to Scientific Linux

I maintain several Linux servers, that we are in the process of migrating from SUSE Linux Enterprise Server (version 10.4) to Scientific Linux (version 5.9). The six SAS hard drives on each machine ...
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271 views

kvm guest having temporary network drops

I have a Scientific Linux 6.3 KVM host running 2 nearly identical Ubuntu 11.04 guests. I built 1 base image and then cloned. Each vm has mysql and different RoR app installed on apache, using nginx as ...
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Lighttpd & Scientific Linux

Not sure if this is the best place to ask a general question ... (please feel free to delete it if it's not appropriate for this forum. or let me know if there's a more appropriate forum, thanks) At ...
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1answer
969 views

CUPS printers discovered via browsing appear as ///dev/null

I have two servers on the same subnet, one CUPS server and one that needs to access printers configured on the CUPS server. CUPS browsing seems to be partially working, but according to lpstat on the ...
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165 views

File descriptor limit RHEL (Scientific Linux) with PHP Server

I want to serve with a PHP more than 1024 Clients! I dont have a apache! When I run the script I come in to a issue once I have more than 1023 Clients connected! I have exactly this issue: ...
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41 views

how to google for help about 'scientific linux' related questions? [closed]

I tried googling for help on several questions related to the scientific linux distribution. Similar distributions have somewhat non-colliding handles ( "RHEL", "CentOS", ..) that are very good ...
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3answers
417 views

fsck on shutdown instead of startup

Usually, fsck it is executed automatically at startup after n reboots. Sometimes it can be really slow and delays the computer startup in more than 30 minutes. Is there any way to run fsck at ...
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2answers
588 views

Trying to install SVN client Scientific Linux

I am trying to install SVN client on Scientific Linux but I am getting the following output if I do a "sudo yum install subversion" Loaded plugins: refresh-packagekit, security Setting up Install ...
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2answers
2k views

fsck.ext3: Device or resource busy on server with RAID after power outage

I am recovering Dell Poweredge R510 server running Scientific Linux 5.5 after an unexpected power outage. The server was set up by our previous system administrator (I'm a grad student). Upon reboot, ...
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83 views

Java Setup on Scientific Linux showing two diffent versions

Java Setup on Scientific Linux showing two diffent versions. I am trying to get java setup right on Scientific Linux. If I do a javac -version I get the following: java_1.7.0_10 which is the ...
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2answers
3k views

How do I install javac (JSDK) on Scientific Linux, 64Bit

I am trying to finds a way to install the Java SDK (javac) on Scientific Linux 64bit with yum or anyway.. Can someone please tell me the best what to do this so I can use maven for my builds etc
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1answer
530 views

avahi stops publishing after a few minutes

I've got a couple of virtual machines (running Scientific Linux 6.2) that publish Workstation records so that they can easily be found on the net. Some of the virtual machines stop publishing after a ...
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1answer
643 views

yum update glibc dependency error on SL 6.1

On SL6.1 I am trying to yum update glibc and it's failing I think with a conflict of sources, but I'm not too sure. I don't really know how to parse the yum error, but here it is: # yum update glibc ...
2
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1answer
81 views

Remote reinstallation of Scientific Linux

I am trying to have a server used for a test platform configured such that it can be easily rebooted and reinstalled with our test OS, so that we can consistently get a clean environment to work with. ...
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1answer
877 views

How to change a static IP NetworkManager Controlled from the shell?

I have a server (SL6.2) with IP configured from install, but now I need to change the IP address. The IP is controlled by the NwtworkManager: # cat /etc/sysconfig/network-scripts/ifcfg-eth1 ...
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3answers
5k views

Linux Kickstart Scipts

I've been working on a kickstart script for a Scientific Linux install. My goal is to create a CD ISO so that someone can install it easily on a server. I've been able to do a decent amount with it ...
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2answers
3k views

How do I pass arguments from the PXE command line to a kickstart %pre, %post script?

Basically I want an ARGV like usage on the PXE command line, but I can't see any documentation to do this. basically I want to pass something like scientific-linux-6 HOSTNAME VLAN then in %pre hit ...
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7answers
11k views

Automatically check for Security Updates on CentOS or Scientific Linux?

We have machines running RedHat-based distros such as CentOS or Scientific Linux. We want the systems to automatically notify us if there are any known vulnerabilities to the installed packages. ...
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1answer
1k views

Creating Custom Fedora/CentOS ISOs

I've been working on creating some custom Linux ISOs and have recently ran into some issues. Originally, I used bootcdwrite along with some scripts for create an ISO of the running config on a Debian ...
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1k views

Troubleshooting an NFS server hanging after authenticated mount request

I need some advice on troubleshooting an NFS server problem on Scientific Linux (RHEL) 6.1. The log on the server shows that an authenticated mount request was made: Jan 13 16:30:02 ??? ...
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1answer
699 views

Mysql rpm package build for Scientific Linux

In my organization we need to deploy custom mysql packages for our Scientific Linux nodes. We need the latest version of mysql and the install directory as /opt/mysql I am trying to build from ...
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2answers
4k views

Kickstart virtual console: No 'Shell prompt' at Alt-F2

I am installing Scientific Linux 6.1 via kickstart, and I am trying to debug a problem. According to Tips and tricks for anaconda and kickstart, I should have several virtual consoles available: ...
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1answer
244 views

OpenSSH + Kerberos SSO problem: Wrong principal in request

Thanks to your help , I am getting closer. Now at this point, I am getting the following message with logging in via ssh: debug1: Unspecified GSS failure. Minor code may provide more information ...
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1answer
246 views

OpenSSH + Kerberos SSO: No key table entry found for host/localhost.localdomain

SSO not working with OpenSSH - I have not been able to get GSSAPIAuthentication to work with Kerberos. Everytime I attempted to login, I kept getting prompted for the password. During the ...
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2answers
3k views

SL6: Non-standard home directories, Error: `Could not chdir to home directory` upon login, but `cd $HOME` works?

I have a brand new Scientific Linux 6 instance (Similar to RHEL6 & CentOS6), running on Parallels. The home directory is in a non-standard location, which I'll call /homedir When I ssh into this ...
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1answer
4k views

Scientific linux: How to install yum using rpm?

On Scientific linux 6.0(RH like linux) I accidentally removed python, so yum removed as well.µ How to install yum with rpm? EDIT I try to install python but it is somehow looped the dependences: ...