Questions tagged [scientific-linux]
Scientific Linux ("SL") is an Enterprise Linux distro based on Red Hat Enterprise Linux.
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Yum update cleanup is hanging
I'm having difficulty locating the cause of a problem I've encountered in a version of the software I'm working on in which a yum update is being applied to update all packages on the system at the ...
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0
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new admin wondering why htop and top show different numbers on scientific linux VM [duplicate]
I am trying to figure out if I am using htop correctly. A top on this VM reveals:
top - 17:52:39 up 98 days, 23:05, 1 user, load average: 0.04, 0.01, 0.00
Tasks: 178 total, 1 running, 177 ...
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1
answer
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Questions about RAID Creation
I'm currently working on a project that requires me to write a script to identify a set of drives added for the purpose of storage and install them as a RAID array. I'm having trouble finding ...
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2
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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 ...
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Scientific Linux 6.5: update ONLY kernel security fixes
We have machines running Scientific Linux (SL) 6.5 release (2.6.32-431.29.2.el6.x86_64) and would like to update just the kernel for security fixes. I have checked another post related to this, but ...
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1
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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 ...
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0
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133
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Scientific Linux 7.2 stops displaying X locally
I'm having the weirdest issue. We use SL7.2 and have a network home directory and AD + SSSD for auth. This means I can go to different computers and get a consistent home dir as well as UID/GID etc. I ...
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0
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630
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IP not showing in /var/log/secure under rhost
I'm trying to get Fail2Ban to block failed sudo -i commands, but the IP is not showing up in the logs. For example when I log into the server with:
ssh -i ~/.ssh/id_rsa [email protected]
I then use:
...
1
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1
answer
2k
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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 ...
1
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0
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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
...
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1
answer
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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 ...
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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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1
answer
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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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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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2
answers
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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, ...
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2
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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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4
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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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2
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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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1
answer
16k
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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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1
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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: ipa-...
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1
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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 ...
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6
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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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1
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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 for ...
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2
answers
2k
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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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1
answer
109
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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 ...
1
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2
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933
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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 ...
6
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1
answer
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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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1
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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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1
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214
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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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1
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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 ...
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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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3
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fsck on shutdown instead of startup
Usually, fsck is executed automatically at startup after every 30th reboot or so. Sometimes, it can be really slow, and can delay bootup by more than half an hour.
Is there any way to run fsck at ...
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2
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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 ...
2
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3
answers
4k
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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, ...
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What is the yum equivalent of dpkg -L?
dpkg -L lists all the files provided by a package. How is this accomplished with yum?
The operating system is Scientific Linux 6.
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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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3
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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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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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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
...
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1
answer
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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.
...
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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
DEVICE="...
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3
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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 ...
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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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9
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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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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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2
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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 ??? rpc.mountd[...
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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 the ...
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2
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14k
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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:
...
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1
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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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1
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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 ...