Tuesday, September 9, 2014

Tracking NetApp Cluster-Mode Performance

To track NetApp Storage on Cluster Performance, do use the statistics "statistics show-periodic"
netapp-cluster1::> statistics show-periodic
cluster:summary: cluster.cluster: 9/9/2014 09:33:29
cpu    total                   data     data     data cluster  cluster  cluster     disk     disk
busy      ops  nfs-ops cifs-ops busy     recv     sent    busy     recv     sent     read    write
---- -------- -------- -------- ---- -------- -------- ------- -------- -------- -------- --------
5%      303      303        0   2%   4.86MB    223KB      0%   1.16MB   1.17MB    685KB    571KB
5%      312      312        0   3%   8.27MB    359KB      0%   1.11MB   1001KB    679KB   39.4KB
8%      300      300        0   2%   7.29MB    495KB      0%   2.87MB   3.30MB   2.66MB   59.1KB
6%      158      158        0   1%   3.53MB    168KB      0%   2.16MB   1.51MB   2.71MB   11.1MB
5%      184      184        0   2%   4.48MB   1.22MB      0%   1.99MB   1.97MB   1.21MB   10.9MB
5%      213      213        0   1%   2.82MB    222KB      0%    902KB    749KB    240KB    671KB
3%      144      144        0   1%   2.32MB    762KB      0%    559KB    685KB   96.6KB   15.8KB
4%      199      199        0   1%   3.73MB    881KB      0%    796KB    715KB    390KB   39.6KB
7%      164      164        0   1%   4.49MB    365KB      0%   2.34MB   2.43MB   2.52MB   8.33MB
7%      115      115        0   2%   4.07MB    154KB      0%   1.23MB   1.25MB   2.41MB   9.80MB
3%      224      224        0   1%   2.72MB    163KB      0%   1.80MB    721KB    407KB    996KB
4%      220      220        0   1%   4.38MB   1.32MB      0%    451KB   1.54MB    199KB    110KB
5%      124      124        0   1%   2.97MB    157KB      0%    315KB    273KB    251KB   15.8KB
7%      153      153        0   0%   1.76MB    139KB      0%    220KB    268KB   2.54MB   1.28MB
4%      120      120        0   0%   1.30MB   80.4KB      0%    417KB    325KB   2.86MB   13.9MB
cluster:summary: cluster.cluster: 9/9/2014 09:34:01
cpu    total                   data     data     data cluster  cluster  cluster     disk     disk
busy      ops  nfs-ops cifs-ops busy     recv     sent    busy     recv     sent     read    write
---- -------- -------- -------- ---- -------- -------- ------- -------- -------- -------- --------
Minimums:
3%      115      115        0   0%   1.30MB   80.4KB      0%    220KB    268KB   96.6KB   15.8KB
Averages for 15 samples:
5%      195      195        0   1%   3.93MB    451KB      0%   1.22MB   1.19MB   1.32MB   3.84MB
Maximums:
8%      312      312        0   3%   8.27MB   1.32MB      0%   2.87MB   3.30MB   2.86MB   13.9MB

Monday, September 8, 2014

Error when sourcing or using compilervars.csh/ippvars.csh - arch: Undefined variable

If you have the error when sourcing or using compilervars.csh/ippvars.csh. The errors are as followed:
$ cd /opt/intel/composer_xe_2013_sp1.2.144/bin
$ source ./compilervars.csh intel64
arch: Undefined variable.

According to the website, Error when using compilervars.csh/ippvars.csh - arch: Undefined variable. from Intel

Problem Description:

A defect exists in the Intel® Integrated Performance Primitives (IPP) 8.1 Initial release in the ippvars.csh file distributed for Linux* (found under: /opt/intel/composer_xe_2013_sp1/ipp).

The IPP 8.1 release (Package ID: l_ipp_8.1.0.144) is available as a stand-alone download or bundled with the Intel® Composer XE 2013 SP1 Update 2 release (Package id: l_ccompxe_2013_sp1.2.144) for customers with valid licenses from the Intel Registration Center.

The defect is caused by improper initialization an internal variable used within the script that leads to the error “arch: Undefined variable.” when the script is sourced directly or indirectly via the compilersvars.csh script (found under: /opt/intel/composer_xe_2013_sp1/bin).


Resolution:
This defect is fixed in the Intel® C++ Composer XE 2013 SP1 Update 3 Release (Package id: l_ccompxe_2013.1.3.174 - Version 14.0.3.174 Build 20140422) now available from our Intel Registration Center.

In lieu of a permanent fix, users (or sys-admins) with appropriate root privileges can edit the ippvars.csh file to insert ONLY the new line 37 as noted in the code snippet below (ahead of line 38 which is the original line 37) to set the variable arch to the value of the first incoming argument (e.g. $1):
     37    set arch="$1"
     38    if ( "$1" == "ia32_intel64" ) then
     39     setenv arch intel64
     40    endif 

Saturday, September 6, 2014

Singaren - Launch of SLIX, the Singapore and the region's first 100Gbps High Speed R&E Network, 28 Aug 2014



SINGAPORE, 28 August 2014 – Singapore Advanced Research and Education Network (SingAREN) announced today the launch of SingAREN-Lightwave Internet Exchange (SLIX), the first 100Gbps community network to be set up in the Southeast Asia region.

With SLIX, Singapore’s Research and Education (R&E) community will gain seamless access to a super high speed network with a hundred times more capacity than before; and enjoy bandwidth fully dedicated to their use. Built on an optical fibre core comprising dark fibres, SLIX allows resiliency, future capacity upgrade, and technology-proof network connectivity.
The new network also opens up new possibilities as a test-bed, extending database mirroring services, bilateral disaster recovery, high performance computing federation and shared services, high volume peering for content data networks and other value-adding services to the R&E community. In addition, SLIX will also enable research organisations to test different protocols for interconnections such as the Infiniband; and optical network researchers to carry out their experiments.

“SingAREN is proud to be the first to launch a 100 Gbps research and education network in the region. By increasing the network speed by ten-fold and with our suite of value-added services, SingAREN aims to facilitate collaborations amongst our local research organisations and with their international counterparts,” said A/Prof Francis Lee Bu Sung, President of SingAREN. “We would like to thank A*STAR, NTU and NUS for working closely with us to realise this network.”

Funded by SingAREN and the National Research Foundation (NRF), SLIX is a collaboration and a network built between SingAREN, the Agency for Science, Technology and Research (A*STAR), the Nanyang Technological University (NTU) and the National University of Singapore (NUS).

SingAREN selected 3D Networks to build the first 100 Gbps research and education network in the region. 3D Networks has deployed a flexible and programmable Packet Optical Platform meeting the advanced requirements of global research collaborators, and capable of scaling up to 400Gbps and beyond. 3D Networks built the DWDM network with the Ciena (NYSE: CIEN)
6500 Converged Packet Optical solution, and with Ciena’s Network Operations Centre and Network Transformation Solutions team providing management and monitoring of the network. The solution is supplemented with Brocade’s Open Flow enabled equipment.
Bluetel Networks is the fibre cable provider for SLIX.


The Business Times:
The Straits Times:

Lianhe Zaobao:

CIO.com (Australia)

Computerworld Singapore
xinmsn

____________________________________________________________________________



Friday, September 5, 2014

WordPress 3.9.2 Security Release

WordPress 3.9.2 is now available as a security release for all previous versions. We strongly encourage you to update your sites immediately.

This release fixes a possible denial of service issue in PHP’s XML processing, reported by Nir Goldshlager of the Salesforce.com Product Security Team. It  was fixed by Michael Adams and Andrew Nacin of the WordPress security team and David Rothstein of the Drupal security team. This is the first time our two projects have coordinated joint security releases.

For more information, do take a look at http://wordpress.org/news/2014/08/wordpress-3-9-2/

Tuesday, September 2, 2014

Security Issue: RHEL glibc based privilege escalation (CVE-2014-5119, Important)

Issue:
There is a flaw in glibc that can allow a local unprivileged user to gain root on Red Hat Enterprise Linux machines.


A public exploit has been released on August 25th. This issue is tracked as CVE-2014-5119 in the MITRE Common Vulnerabilities and Exposures (CVE) database. The issue can not be blocked by our security technologies (such as SELinux). This issue affects the version of glibc as shipped with Red Hat Enterprise Linux 5, 6 and 7.

Resolution:
Please update your glibc to the latest version. Check the errata RHSA-2014:1110-1 for the glibc that matches your operating system version.

Reference:
See this KCS article for more detail: https://access.redhat.com/solutions/1176253