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Questions tagged [redhat]

Red Hat is an open source technology solutions provider with offerings including Red Hat Enterprise Linux, open source applications, security and systems management, virtualization, Services Oriented Architecture (SOA) solutions, server and desktop operating systems, Java application software and services, and the JBoss Enterprise Middleware Suite. Please also consider whether or not the more specific RHEL5 or 6 tags might be appropriate as well.

Red Hat is an open source technology solutions provider with offerings including Red Hat Enterprise Linux, open source applications, security and systems management, virtualization, Services Oriented Architecture (SOA) solutions, server and desktop operating systems, Java application software and services, and the JBoss Enterprise Middleware Suite.

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CentOS 6 local update repository and security updates

I know that official CentOS 6 (even 7) update repositories does not provide security information. The consequence is thatyum-plugin-security plugin and yum check-update --security command does not list any updates like on RHEL or OEL distros. There…
dsmsk80
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Wait for systemd oneshot service to finish

I am doing some server provisioning and I need to run a script AFTER installation as it requires the system to be fully functional, include services. So I cannot put it inside the %post section of my kickstart file. Instead I have created a systemd…
Christoffer Reijer
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How to find out who rebooted LINUX server

Someone restarted our Linux server and I want to find out which user did it. There might be multiple users on this server with sudo privileges, is there any specific log file which keep track of user who did reboot last time? Edit: I am using Red…
DevOps_101
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Implications of using VMware's templating and cloning for provisioning Linux servers instead of PXE

There seems to be speed benefits when using VMware's templates to create new VMs. However, I'm concerned about possible less obvious security and flexibility implications. For e.g.: First boot generated keys VMware proprietary methods of…
Belmin Fernandez
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Cannot find open shared object file libjli.so -- no such file or directory

On 64-bit RHEL5 running Java 1.6.0 update 16, root can successfully run a Java program but a user can't because libjli.so supposedly can't be found. SELinux is turned off and the environment is the same before the program is run. I've tried putting…
joeforker
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On Redhat, what does "kernel.suid_dumpable = 1" mean?

I'm running a bash script to copy some log files and then restart a service on a Red Hat box. Every time I execute the script, I get the following on my console: [root@servername ~]# sh /bin/restart_nss.sh kernel.suid_dumpable = 1 …
IVR Avenger
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Serial Over Lan doesn't redirect OS terminal

I'm trying to create a monitoring system for a remote machine using an IPMI Serial Over Lan (SOL) console. The remote OS is RHEL 6, the mobo manufacturer is Supermicro. I've successfully enabled SOL redirection in the BIOS. This allows me to see the…
NRafalski
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How to get cpio (gnu, rhel 4) to extract to a specified directory?

Reason is I want to make a tidy script instead of cd /some/dir cpio -whatever
Erik I
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On AWS do I have to open ports in an EC2 instance's firewall as well as security group?

If I change my SSH port from 22 to 23453, I can no longer ssh in. In more detail, I'm using a Red Hat EC2 instance on Amazon Web Services. This is the second change I've on a fresh install (first change was to add a non-root user). I can ssh in fine…
vowel-house-might
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Can't Remove Logical Drive/Array from HP P400

This is my first post here. Thank you in advance for any assistance with this matter. I'm trying to remove a logical drive (logical drive 2) and an array (array "B") from my Smart Array P400. The host is a DL580 G5 running 64-bit Red Hat Enterprise…
Myles
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Examining Multiple Ports When Running NetCat (nc)

I am looking to test if specific ports are on a host are open. I am using: nc -z host 22 nc -z host 80 nc -z host 443 nc -z host 8080 which works, but it would be nice to use a one-liner like: nc -z host 22 80 443 8080 which doesn't work. I would…
KM.
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How do I set the default kernel parameters in CentOS for all existing and future kernels?

I'd like to remove the rhgb and quiet kernel parameters which are used by default when the kernel is booted in CentOS 6, but I want this to apply to all currently installed kernels as well as any kernels installed in the future. I need to do this…
mgorven
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NFS mount mounted inside another NFS mount disappears randomly

I have quite an odd issue where my nested NFS mounts just disappear randomly from time to time. The fstab entries look somewhat like this: nfs:/home /home nfs rw,hard,intr,rsize=32768,noatime,nocto,proto=tcp 0 0 nfs:/bigdir /home/bigdir nfs…
espenfjo
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What is the difference between RHEV and oVirt?

When I read the wikipedia articles about RHEV and oVirt, I can't really figure out why Red Hat have both projects, as they seam to solve the same problem? http://en.wikipedia.org/wiki/RHEV http://en.wikipedia.org/wiki/OVirt oVirt will be included in…
Sandra
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How do I check if a port is open on Red Hat Linux/CentOS

I've written a program that is suppose to implement SLP (rfc2608) and I'm having trouble testing it. I'm not sure if the port is closed or there is something out there dropping my multicast datagrams. Is there a command I can run from a redhat…
Jason Thompson
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