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Servers & Storage Feed

Sun Servers and Storage, Solaris, Oracle Linux, Red Hat Linux, Oracle VM for x86, Oracle VDI and Virtualization resources, news, and support articles.

Add an Active Directory (AD) Domain Account to sudo on Centrify Express for CentOS 6

Adding a Active Directory (AD) Domain Account to /etc/sudo is fairly easy on Centrify Express for CentOS 6. Suppose you have an AD Group called “Sys_Admin”, just add it to the
## Allow root to run any commands anywhere
root    ALL=(ALL)       ALL
%System_Admin ALL=(ALL)       ALL
If it is an individual user, just get the userid from Active Directory

RDO Setup Two Real Node (Controller+Compute) IceHouse Neutron ML2&OVS&VXLAN Cluster on CentOS 7

As of 07/28/2014 Bug is still pending and workaround suggested above should be applied during two node RDO packstack installation.
Successful implementation of Neutron ML2&&OVS&&VXLAN multi node setup requires correct version of plugin.ini -> /etc/neutron/plugins/ml2/ml2_conf.ini which appears to be generated with errors by packstack.

X Forwarding Sudo SSH Session

Many environments make use of sudo to delegate access to administrative or application user accounts. This can make ssh X forwarding tricky because your environment changes as you sudo to another user. This is a workaround that will allow you to continue your ssh X forwarding session while running sudo as another user. How to […]
The post X Forwarding Sudo SSH Session appeared first on Backdrift.

Mix and match stable and testing releases in Debian

My Debian system runs the current stable Debian distribution Wheezy. However, there are software packages that are only available in the current testing distribution Jessie. Examples are dateutils, and Enlightenment 0.17.

ZFS with Redhat Cluster Suite

This is a very nice project I have been working on. The hardware at hand – two servers, with a shared SAS bus containing several SAS disks. Since it’s a shared bus, no RAID solution would cut it, and as I don’t want to waste disks with ASM (“normal” redundancy meaning half the size…), I went to ZFS storage.
ZFS is a wonderful technology, with many advantages, but with some dangerous pitfalls. As I prefer Linux, I did not bother with any Sloaris solutions, and went directly to Centos 6. I will describe my cluster setup below.

Fixing rpc.statd is not running but is required for remote locking

If you come across this error while attempting to mount an NFS filesystem it means that the statd process is not running. # mount -a -t nfs   mount.nfs: rpc.statd is not running but is required for remote locking. mount.nfs: Either use '-o nolock' to keep locks local, or start statd. mount.nfs: an incorrect mount […]
The post Fixing rpc.statd is not running but is required for remote locking appeared first on Backdrift.

Enabling Debugging for Linux Systems for Centrify Express on CentOS 6

Step 1: Enable Debugging for Centrify
# /usr/share/centrifydc/bin/addebug on
/var/log/centrify_client.log does not exist. Creating now.
Configure /etc/rsyslog.conf
Send HUP signal to rsyslogd
Configure log level in /etc/centrifydc/centrifydc.conf
Reload /etc/centrifydc/centrifydc.conf
Centrify DirectControl debug logging is on
 Step 2: Collect support information via

Using pip to install python packages

Pointer 1: To install specific version of packages do
# pip install 'numpy==1.5.1'
Pointer 2: To show what files was installed
# pip show --files numpy
Name: numpy
Version: 1.8.1
Location: /usr/local/python-2.7.8/lib/python2.7/site-packages
Pointer 3: Uninstall a package

Mirage OS v2.0: The new features

The first release of Mirage OS back in December 2013 introduced the prototype of the unikernel concept, which realised the promise of a safe, flexible mechanism to build highly optimized software stacks purpose-built for deployment in the public cloud (see the

How to fix vyatta protocol daemon is not running

The problem: protocol daemon is not running While attempting to commit a change on a new vyatta router install I ran into this error: vyatta@host# commit   [[interfaces bonding bond0]] failed [ interfaces ethernet eth1 ] % Protocol daemon is not running   [[interfaces ethernet eth1]] failed [ interfaces ethernet eth0 ] % Protocol daemon […]
The post How to fix vyatta protocol daemon is not running appeared first on Backdrift.

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