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Questions tagged [scientific-linux]

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

Scientific Linux ("SL") is a Linux release put together by Fermilab, CERN, and various other labs and universities around the world.

The base SL distribution is similar to Red Hat Enterprise Linux, recompiled from source. Various labs will customize SL, and provide their own customized version called a "Site" which is primarily used that Lab (e.g. the Fermi "Site" is used primarily at Fermilab in the US.)

The main goal for the base distribution is to have everything compatible with Enterprise, with only a few minor additions or changes. SL does not aim to be "100% binary compatable" like CentOS, but instead aims to be as close to the commercial enterprise distribution as we can get it.

See www.scientificlinux.org for more information.

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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 needed for the upgrade to latest version. vCenter is…
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How to find a server connected on network?

earlier this week we physically installed a machine in our server rack and connected it to our network switch. It has Scientific linux installed but we don't have a user account set up to log into. We turned it on and its running headless, but we'd…
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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 the four systems which are able to access the…
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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, I see the message: fsck.ext3: Device or resource…
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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. I have an iso file which contains the image, but…
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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 but I'm still running into a few problems that I…
Eric
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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: What the different terminals display Alt-F1 The…
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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 troubleshooting, I initiated a debug here: [foster@kvm0007…
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Kickstart creates 2 configuration files for same network interface

Trying my first Kickstart with Scientific Linux 7, and have ironed out most of the bugs with migrating my scripts from SL6, but one remains. I boot the VM on DHCP to pull the Kickstart file from an HTTP server, by adding the following at the boot…
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SELinux and iptables on a firewall / router

I've come to a point where I need to migrate to a new server. Though I'm aware of the SELinux advantages, is it necessary to keep SELinux enabled when the firewall / gateway is only meant to route the traffic to different destination hosts. Users…
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Script in user terminal works, permission failure in users crontab in Scientific Linux 7.1

I have a script that works to check if my VPN connection is up, and if not, it restarts it. This works correctly in a terminal, but the command nmcli con up uuid 7c514892-6a6a-4d33-946b-84aeb37615bb seems to give an error when cron tries to run it,…
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proftpd ignores HideGroup

I have an interesting problem when hosting a proftpd on a SL6 x86_64. When I compile from source, proftpd executable ignores the HideGroup feature. However, when I install an older version from epel via rpm, this HideGroup feature works just fine.…
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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, selected and subsequently installed. These steps…
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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 one of our mailing lists. Moderation fails when…
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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 client, the devices are ///dev/null instead of an…
Nic
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