Thursday Feb 18, 2016

Training Thursdays: Installing Oracle Linux with Kickstart

Kickstart facilitates automated installation of the Linux operating system. This saves time and effort when the system administrator has to manage a large number of systems.

Kickstart is one of the many topics covered in Oracle's Linux Advanced Administration training. Those using Oracle Linux 7 should take the Oracle Linux 7: Advanced Administration course. You can take this course as a:

  • Live Virtual Event: Attend a live event from your own desk, no travel required. Choose from a selection of events on the schedule to suit different time-zones. Events on the schedule include 14 March, 24 April, 17 July and 18 December 2016.
  • In-Class Event: Travel to an education center to take a class. Below is a selection of the in-class events already on the schedule.
 Location  Date  Delivery Language
 Bogoto, Colombia
 18 April 2016  Spanish
 London, England
 18 April 2016  English
 Munich, Germany
 9 May 2016  German
 Kuala Lumpur, Malaysia
 25 April 2016  English
 Makati City, Philippines
 21 March 2016  English
 Singapore
 25 April 2016  English
 Madrid, Spain
 22 February 2016  Spanish
 Belmont, CA, United States  9 May 2016  English
 Reston, VA, United States  28 March 2016  English
Those using previous versions of Linux should take the Oracle Linux 5 & 6 Advanced Administration course. You can take this course in the following formats:
  • Training-on-Demand: Start training within 24 hours of registration, following lecture material at your own pace through streaming video and booking a time that suits your schedule to work through hands-on exercises.
  • Live Virtual Event: Attend a live event from your own desk, no travel required. Choose from a selection of events on the schedule to suit different timezones. Events on the schedule include 13 March, 11 April, 23 May and 4 September 2016.
  • In-Class Event: Travel to an education center to take a class. Below is a selection of the in-class events already on the schedule.

 Location  Date  Delivery Language
 London, England
 11 April 2016  English
 Jakarta, Indonesia
 16 May 2016  English
 Milan, Italy
 6 June 2016  Italian
 Turin, Italy
 12 December 2016  Italian
 Kuala Lumpur, Malaysia
 14 March 2016  English
 Capetown, South Africa
 14 March 2016  English
 Johannesburg, South Africa
 22 February 2016  English
 Bangkok, Thailand
 18 April 2016  English
 Belmont, CA, United States  16 April 2016  English
 Jackson, Fl, United States  4 April 2016  English
 Roseville, MN, United States  18 April 2016  English

Taking the Oracle Linux 5 & 6 Advanced Administration course is one step in your preparation to sit the Oracle Linux 5 & 6 System Administrator OCP certificate exam.

To register for an event or learn more about the Oracle Linux curriculum, go to http://oracle.com/education/linux.

Thursday Feb 11, 2016

Training Thursdays: What Linux Sys Admins Need to Know

There are some key skills that you need if you want to be a Linux system administrator. The Oracle Linux System Administration courses teach you these skills. The objectives of these courses are to:

  • Install Oracle Linux
  • Load and configure the Unbreakable Enterprise Kernel
  • Install software packages from Unbreakable Linux Network and other repositories
  • Use Ksplice to update the kernel on a running system
  • Configure system logging
  • Load kernel modules and configure kernel module parameters
  • Perform User and Group administration
  • Create Ext, XFS, and Btrfs file systems
  • Maintain swap space
  • Use Logical Volume Manager (LVM)
  • Configure RAID devices
  • Configure File Sharing services (NFS, FTP, OpenSSH)
  • Perform Security Administration (firewalld, iptables, chroot, TCP wrappers)
  • Prepare Oracle Linux system for Oracle database
  • Troubleshoot problems and perform corrective action

Those interested in Linux 7 should take the Oracle Linux 7: System Administration course. You can take this course as a:

  • Live-Virtual Event: Attend a live event from your own desk, no travel required. Choose from a selection of events on the schedule to suit different time-zones including 14 and 15 February, 7, 14 and 28 March, 4 and 18 April, and 9 May 2016.
  • In-Class Event: Travel to an education center to take this class. Below is a selection of the in-class events on the schedule.

 Location  Date  Delivery Language
Vienna, Austria
15 February 2016 German
Reading, England
7 March 2016 English
Paris, France
6 June 2016 French
Jakarta, Indonesia
25 April 2016 English
Utrecht, Netherlands
9 May 2016 English
Makati City, Philippines
18 April 2016 English
Moscow, Russia
15 February 2016 Russian
Cape town, South Africa
29 February 2016 English
Johannesburg, South Africa
29 February 2016 English
Pretoria, South Africa
11 July 2016 English
Bangkok, Thailand
23 May 2016 English
Dubai, United Arab Emirates
3 April 2016 English
Dallax, TX, United States 25 April 2016 English
Those interested in Linux 5 or 6 should take the Oracle Linux 5 & 6 System Administration course. You can take this course as a:
  • Training-on-Demand: Start training within 24 hours of registering, following lecture delivery at your own pace through streaming video and booking a time that suits you to perform lab exercises.
  • Live-Virtual Event: Attend a live event from your own desk, no travel required. Choose from a selection of events on the schedule to suit different time-zones including 7 March, 4 and 18 April, and 18 May 2016.
  • In-Class Event: Travel to an education center to take this class. Below is a selection of the in-class events on the schedule.

 Location  Date  Delivery Language
Melbourne, Australia
4 April 2016 English
Sydney, Australia
18 April 2016 English
London, England
14 March 2016 English
Hamburg, Germany
11 April 2016 German
Athens, Greece
15 February 2016 Greek
Milan, Italy
12 December 2016 Italian
Rome, Italy
2 May 2016 Italian
Turin, Italy
27 June 2016 Italian
Amman, Jordan
15 May 2016 English
Utrecht, Netherlands  11 April 2016 English
Johannesburg, South Africa
27 June 2016 English
Istanbul, Turkey 9 May 2016 Turkish
Dubai, United Arab Emirates 21 February 2016 English
Atlanta, GA, United States 2 May 2016 English
Reston, VA, United States 15 February 2016 English
The Oracle Linux 5 & 6 System Administration course is one step in your preparation to sit the Oracle Linux 5 & 6 System Administrator Oracle Certified Associate exam.

To register for an event or to learn more about the Oracle Linux curriculum, go to http://oracle.com/education/linux.

Thursday Feb 04, 2016

Training Thursdays: Are You Ready for Advanced Oracle Linux Training

Are you ready to take your knowledge of Linux system administration to the next level?

If you already have knowledge about:

  • Installing Oracle Linux 7
  • The systemd system and service manager
  • Network interface configuration files and network configuration
  • Disk partitioning and creation and maintenance of Linux file systems
  • Software package installation
  • User and Group administration
  • Security administration using firewalld

You are ready to take the Advanced Administration training in the Oracle Linux curriculum.

If you use Linux 7, take the Oracle Linux 7: Advanced Administration course. You can take this course in the following formats:

  • Live-Virtual Event: Attend a live event from your own desk, no travel required. Choose from a selection of events on the schedule to suit different timezones including 14 March, 25 April and 18 July 2016.
  • In-Class Event: Travel to an education center to attend this course. Below is a selection of the in-class events already on the schedule.

 Location  Date  Delivery Language
London, England
18 April 2016 English
Munich, Germany
15 February 2016 German
Kuala Lumpur, Malaysia
25 April 2016 English
Makati City, Philippines
22 February 2016 English
Singapore
25 April 2016 English
Johannesburg, South Africa 22 February 2016 English
Cape Town, South Africa 14 March 2016 English
Madrid, Spain 22 February 2016 Spanish
Reston, VA, United States 28 March 2016 English
Belmont, CA, United States 9 May 2016 English
If you use Linux 5 or 6, take the Oracle Linux 5 & 6 Advanced Administration course. You can take this course in the following formats:

  • Training-on-Demand: Start training within 24 hours of registration, following lecture material through streaming video at your own pace and booking time to perform lab exercises when suits your schedule.
  • Live-Virtual Event: Attend a live event from your own desk, no travel required. Choose from a selection of events on the schedule to suit different timezones including 7 and 14 March, 11 April and 23 May 2016.
  • In-Class Event: Travel to an education center to attend a class. Below is a selection of the in-class events already on the schedule.

 Location  Date  Delivery Language
London, England
11 April 2016 English
Jakarta, Indonesia
29 February 2016 English
Milan, Italy
5 June 2016 Italian
Turin, Italy
12 December 2016 Italian
Kuala Lumpur, Malaysia 14 March 2016 English
Bangkok, Thailand 18 April 2016 English
Chicago, IL, United States 22 February 2016 English
Jacksonville, FL, United States 4 April 2016 English
Roseville, MN, United States 18 April 2016 English
Belmont, CA, United States 16 May 2016 English

The Oracle Linux 5 & 6 Advanced Administration course is one step in your preparation to sit the Oracle Linux 6 Advanced System Administration Oracle Certified Professional exam.

To register for an event or to learn more about the Oracle Linux curriculum, go to http://oracle.com/education/linux.

Friday Jan 29, 2016

FRIDAY SPOTLIGHT: Running OpenSCAP Compliance Checks on Oracle Linux

This Friday we would like to highlight a great new OTN article: Running OpenSCAP compliance checks on Oracle Linux.

Many of you may have heard OpenSCAP, if not here are some details. SCAP is U.S. standard maintained by National Institute of Standards and Technology (NIST). SCAP is a multi-purpose framework of specifications that supports automated configuration, vulnerability and patch checking, technical control compliance activities, and security measurement. 

As a part of IT security management, organizations usually define a security policy that standardizes optimal internal practices, processes, and configurations. When a company stores or processes sensitive data (including personal identity, financial data, or healthcare records), the security policy must also reflect relevant government and regulatory standards such as the Gramm-Leach-Bliley Act (GLBA), the Health Insurance Portability and Accountability Act (HIPAA), Sarbanes-Oxley (SOX), and the Payment Card Industry Data Security Standard (PCI DSS). Standards often specify hardening guidelines and IT system requirements as well as required security practices. Many standards also mandate formal security reviews that must be performed by certified auditors on a regular schedule. In addition to these formal compliance assessments, IT departments typically conduct informal security reviews to detect and remedy vulnerabilities that might otherwise result in system or data compromise.

The diversity of data center systems adds to the challenge of developing effective and efficient strategies for IT security management. To help organizations automate compliance checks and implement security policy more universally across heterogeneous data centers, the US National Institute of Standards and Technology (NIST) developed the Security Content Automation Protocol (SCAP) standard. NIST created SCAP to provide a standardized approach for implementing enterprise system security and baseline profiles for compliance audits. Based on the SCAP standard, the OpenSCAP project supplies open source tools and policies to automate compliance checking and consistently apply security policy across different system types.

To automate compliance checking on Oracle Linux servers, the operating system includes packages containing an OpenSCAP framework and an implementation of the OpenSCAP interpreter, oscap. In addition, Oracle makes SCAP content files available to evaluate Oracle Linux system configurations against a defined security policy, industry-accepted hardening guidelines, and known vulnerabilities. This article can help administrators get started using the OpenSCAP functionality in Oracle Linux. It describes the various SCAP content files available to automate compliance checks, as well as how to obtain and use security advisory content that Oracle regularly publishes. It also discusses how to use Spacewalk, a tool for Linux systems management, to run OpenSCAP audits on Spacewalk-managed Oracle Linux client systems.

Read more in this full article: Running OpenSCAP Compliance Checks on Oracle Linux

Thursday Jan 28, 2016

Training Thursdays: UEK in Oracle Linux Curriculum

Unbreakable Enterprise Kernel (UEK) is heavily tested with Oracle workloads and therefore recommended for Oracle deployments and all other enterprise deployments. Learn about the UEK by following the Oracle Linux System Administration curriculum.

You will learn how UEK brings you scalability improvements and features including:

  • DTrace for Linux
  • File system improvements
  • Improved support for control groups and Linux containers

Those using Oracle Linux 7 should take the Oracle Linux 7: System Administration course. You can take this course as a:

  • Live-Virtual Event: Attend a live event from your own desk, no travel required. Choose from a selection of events already on the schedule to suit different time-zones including 15 February, 6, 14 and 28 March, 4 and 17 April, and 9 May 2016.
  • In-Class Event: Travel to an education center to take this course. In-class events on the schedule include:

 Location  Date  Delivery Language
Vienna, Austria
15 February 2016 German
Reading, England
7 March 2016 English
Paris, France
6 June 2016 French
Hamburg, Germany
1 February 2016 German
Jakarta, Indonesia
25 April 2016 English
Makati City, Philippines
18 April 2016 English
Capetown, South Africa
29 February 2016 English
Johannesburg, South Africa
29 February 2016 English
Pretoria, South Africa
11 July 2016 English
Madrid, Spain
1 February 2016 Spanish
Bangkok, Thailand 22 February 2016 English
Dubai, United Arab Emirates 3 April 2016 English
Atlanta, GA, United States 7 March 2016 English
Dallas, Texas, United States 25 April 2016 English

Those using Oracle Linux 5 or 6 should take the Oracle Linux 5 & 6: System Administration course.

You can take this course in the following formats:

  • Training-on-Demand: Start training within 24 hours of registering, following lectures through streaming video at your own pace and booking time on a lab environment to suit your schedule.
  • Live-Virtual Event: Attend a live-event from your own desk, no travel required. Choose from a selection of events already on the schedule to suit different timezones including 1 February, 6 and 7 March, 3, 17 and 18 April, and 16 May 2016.
  • In-Class Event: Travel to an education center to take this course. In-class events on the schedule include:

 Location  Date  Delivery Language
 Melbourne, Australia
 4 February 2016  English
 Sydney, Australia
 18 April 2016  English
 London, England
 14 March 2016  English
 Causeway Bay, Hong Kong
 1 February 2016  English
 Milan, Italy
 12 December 2016  Italian
 Rome, Italy
 15 February 2016  Italian
 Turin, Italy
 27 June 2016  Italian
 Kuala Lumpur, Malaysia
 7 March 2016  English
 Petaling Jaya, Malaysia
 22 August 2016  English
 Utrecht, Netherlands
 11 April 2016  English
 Riyadh, Saudi Arabia
 21 February 2016  English
 Capetown, South Africa
 29 February 2016  English
 Johannesburg, South Africa
 8 February 2016  English
 Pretoria, South Africa  5 December 2016  English
 Istanbul, Turkey
 9 May 2016  Turkish
 Dubai, United Arab Emirates  21 February 2016  English
 Reston, VA, United States  15 February 2016  English
 Atlanta, GA, United States  2 May 2016  English

Taking the Oracle Linux System Administration course is one step in your preparation to sit the Oracle Linux 5 & 6 System Administrator OCA certificate exam.

For more information about the Oracle Linux curriculum go to http://oracle.com/education/linux.

Friday Jan 22, 2016

FRIDAY SPOTLIGHT: Announcing User Space Support for Ksplice on Oracle Linux 6

During Oracle OpenWorld 2015 Oracle released new features for Oracle Ksplice which introduced groundbreaking capabilities to patch user space libraries in Oracle Linux 7 without rebooting. This new feature, plus the extensive zero-downtime kernel patching capabilities already included in Oracle Ksplice, make it an ideal choice for keeping your Oracle Linux infrastructure up to date and secure.

Today, Oracle is pleased to announce user space patching with Oracle Ksplice is now available for Oracle Linux Premier Support customers using Oracle Linux 6. Now you can take advantage of this cutting edge technology to keep key user space libraries up to date on Oracle Linux 6 or Oracle Linux 7. And, of course, Oracle Ksplice continues to provide critical kernel patches so you can patch both kernel and user space without ever needing to reboot.

Read about the user space patching capabilities of Oracle Ksplice in the updated documentation, and get the latest Oracle Ksplice packages with your Oracle Linux Premier Support agreement from the Unbreakable Linux Network.

Thursday Jan 21, 2016

Training Thursdays: Get Trained on Docker and Oracle Linux

Docker is an open platform management tool for Linux Containers. It provides a means for developers and system administrators to build and package applications into lightweight containers. The container is independent from the host operating system and kernel version. As a result, you can run the same application, unchanged, on laptops, data center virtual machines, and any cloud. You can transfer this container to another machine that runs Docker and run the application without any compatibility issues. The following lists additional advantages of running applications within Docker containers:

  • Docker images contain only the content needed to run an application so they are smaller than virtual machines, which require the entire operating system.
  • A Docker container runs faster than an application that includes the overhead of an entire virtual machine.
  • A Docker container includes its own network interfaces, file system, and memory, which allows the application running in the container to be isolated and secured from other processes on the host computer.

You can learn to use Docker with Oracle Linux, as well as learn about many other topics, by taking the Oracle Linux 7: Advanced Administration course. You can take this course as a:

  • Live Virtual Event: Attend a live event from your own desk, no travel required. Choose from a selection of events on the schedule to suit different timezones. Events on the schedule include 25 and 31 January, 8 February, 13 March, 24 April, and 17 July 2016.
  • In-Class Event: Travel to an education center to take a class. Below is a selection of the in-class events already on the schedule.

 Location  Date  Delivery Language
London, England
18 April 2016 English
Paris, France
22 February 2016 French
Munich, Germany
15 February 2016 German
Kuala Lumpur, Malaysia
25 April 2016 English
Makati City, Philippines
22 February 2016 English
Singapore 1 February 2016 English
Madrid, Spain 22 February 2016 Spanish
VA, Reston, United States 28 March 2016 English
CA, Belmont, United States 9 May 2016 English
To register for an event or learn more about the Oracle Linux curriculum, go to http://oracle.com/education/linux.

Friday Jan 15, 2016

FRIDAY SPOTLIGHT: Customers that Benefit from using Oracle Linux

This Friday spotlight is about customers that implemented Oracle Engineered Systems and used Oracle Linux as their operating system. Oracle Linux is used in all x86 based engineered systems that Oracle offers and optimized for the hardware to provide enhanced performance.

Main benefits listed in the case studies were:

  • Increased performance
  • High availability
  • Reduced cost

Here's just a few selection of the latest customers that implemented Oracle Linux with Oracle Engineered systems:

TeknoSA Boosts Competitiveness with Powerful Sales Analytics on Engineered Business Intelligence Platform 

Company:  TeknoSA

TeknoSA launched a decision support platform using Oracle Business Intelligence on Oracle Exadata to empower executives and sales staff with enhanced sales analytics across nearly 300 outlets and its online store.

Company:  Türk Telekom

Türk Telekom deployed Oracle Exalogic Elastic Cloud and Oracle Exadata Database Machine to run Siebel CRM 8.1 with substantially increased availability and performance while reducing total cost of ownership by 68%

Company:  SISPI Sistema Palermo Informatica

SISPI Sistema Palermo Informatica S.p.A. consolidated 12 single-instance Oracle Databases from IBM Blade servers onto Oracle Exadata Database Machine, delivering substantially increased system performance

Company:  National Oilwell Varco

National Oilwell Varco built an enterprise data warehouse using Oracle Exadata Database Machine and Oracle Business Intelligence, Enterprise Edition, expanding insight into financial and operational performance.

QIIB Reduces Application Response Time 10x on Average, Saves US$1.5 Million per Year in Database Licensing Costs

Company:  QIIB
QIIB deployed Oracle Exadata Database Machine X4-2 to improve the bank’s competitiveness by increasing employee and customer satisfaction, enhancing business agility and continuity, and reducing IT costs.

Secure-24 Ensures Rapid Application Deployment and Cuts Deployment Costs by 90% with Private Cloud Appliance

Company:  Secure-24

Secure-24 deployed Oracle’s Private Cloud Appliance to consistently and securely launch enterprise cloud environments while reducing deployment costs by 90% and acquisition costs by 50%.

Read more customer stories about Oracle Linux. 

Friday Dec 18, 2015

FRIDAY SPOTLIGHT: Oracle Linux Newsletter December 2015 Issue Out

The latest issue of the Oracle Linux Newsletter - December 2015 issue is out. It comes with great new videos, demos, whitepapers and partner news. 

Read it today and subscribe to get it sent to your email bi-monthly.


Tuesday Dec 15, 2015

Oracle Linux Training in Oracle Systems Learning Subscription

The Oracle Systems Learning Subscription is now available. In this portfolio of digital training, you learn to administer Engineered Systems, Oracle Linux, Oracle Solaris, Virtualization, Servers and Storage solutions. You can Preview the training available in this subscription.

In this learning subscription, Oracle experts provide you with learning tracks as well as easily consumed learning nuggets on product offerings, insights into product releases, best practices and more.

Access information on all Oracle's Learning Subscriptions at http://education.oracle.com/subscriptions.

Friday Dec 11, 2015

FRIDAY SPOTLIGHT: Why Oracle Linux for Modern, Cloud-Enabled DataCenter?

Happy Friday everyone!

We have a great video to share with you this week. In this animated video,  learn how Oracle Linux includes the features and tools you need for your modern, cloud-enabled data center. 

While Oracle Linux is open source and includes standard technologies, tools, and features, Oracle extends the release to deliver a complete, integrated, and supported platform for performance-driven production workloads. In addition to the Red Hat Compatible Kernel (RHCK), Oracle supplies the optimized Unbreakable Enterprise Kernel (UEK), which was first developed to support highly scalable Oracle Engineered Systems. Support for Oracle Linux is affordable and the release is free to download and distribute, unlike other commercial Linux distributions. To add even greater value, Oracle bundles additional capabilities—Ksplice for zero-downtime kernel updates, support for Docker, Linux Containers, OpenStack, Oracle Clusterware for High Availability (HA), and more—at no additional charge with an Oracle Linux Premier Support contract. As a result of these additions, companies receive greater value from their Linux support investment, allowing IT organizations to achieve a higher return on investment.

Watch Oracle Linux for the Cloud-Enabled Datacenter.

Wednesday Dec 02, 2015

Learn About XFS in Oracle Linux 7 Training

Linux 7 system administrators know that:

  • XFS is the default file system for Oracle Linux 7.
  • XFS is a high-performance journaling file system that supports a maximum file system size of 500 TB and a maximum file size of 16 TB.
  • You can create an XFS file system on a regular disk partition and on a logical volume.

Build your Linux system administration skills by taking the Oracle Linux 7: System Administration course. You can take this 5-day instructor-led course as a:

  • Live Virtual Event: Attend a live event from your own desk, no travel required. Choose from a selection of events on the schedule to suit different time-zones. Events currently on the schedule include January 11, February 1 or 15, March 28, April 4 or 18 and May 9 2016 in English and March 14 2016 in French.
  • In-Class Event: Travel to an education center to take this course. In-class events on the schedule include:

 Location  Date  Delivery Language
Reading, England
7 March 2016
English
Paris, France
6 June 2016
French
Kuala Lumpur, Malaysia 
11 Jan 2016
English
Capetown, South Africa
1 August 2016
English
Johannesburg, South Africa
29 February 2016 English
Pretoria, South Africa
11 July 2016
English
Bangkok, Thailand
22 February 2016
English
Belmont, CA, United States
7 December 2015
English
Tampa, FL, United States
25 January 2016
English
Atlanta, GA, United States
7 March 2016 English
Roseville, MN, United States 18 January 2016 English
Dallas, TX, United States 25 April 2016 English
If you are using Linux 5 or 6, consider taking the Oracle Linux 5 & 6 System Administration course.

To register for an event or to learn more about the Oracle Linux curriculum, go to http://oracle.com/education/linux.

Friday Nov 20, 2015

FRIDAY SPOTLIGHT: Best Videos about Oracle Linux from OOW15

There's something better about hearing a topic in a video, it is as if you have been transported to that location without interruptions from other elements. You also get to know the presenter at a different level; how he gets excited about his products, his projects or the environment around him. For this reason, we wanted to dedicate this Friday to all the Oracle OpenWorld videos that feature Oracle Linux.  It will give you an amazing insight and transport you to San Francisco, to that moment!

Keynotes: 

First we want to start with Oracle OpenWorld 2015  keynotes that have featured Oracle Linux announcements. We recommend watching Larry Ellison and Intel CEO, Brian Krzanich's keynotes.

theCUBE Videos 

The second video set is Oracle Executives that are featured in SiliconAngle's theCube. Wim Coekaerts, Sr.VP of Linux and Virtualization Engineering, had been very busy during Oracle OpenWorld this year with some great interviews. His videos are always fun to watch and very informative about latest technologies like docker, containers and OpenStack. The second video is from our Chief Architect, Edward Screven. You can hear his views on Open Source in the video below.

Partner Videos from the Showcase 

Our third video set covers some of our great ISV and IHV Partners who have participated in our OracleLinux, Oracle VM and OpenStack Showcase. 

amitego AG - Oracle OpenWorld 2015

Intel - Oracle OpenWorld 2015

QLogic - Oracle OpenWorld 2015

SGI - Oracle OpenWorld 2015

Tech Talk Video

Last, but not least is our Tech Talk video about Node.js and Oracle Linux. In this video, we give you insights on how to use node.js on Oracle Linux from Chris Jones who develops on that platform.

Oracle Linux and Node.js - Tech Talk

Have fun watching these all engaging videos and transporting to Oracle Linux-land!

Tuesday Nov 10, 2015

Learn About Using DTrace with Oracle Linux

DTrace is a performance analysis and troubleshooting tool. DTrace allows dynamic tracing by defining probe points dynamically. Probes and actions at probe points are defined by commands and scripts written in the D language.

To learn about using DTrace with Oracle Linux, view this video and learn to: 

  • Subscribe to the DTrace channel on ULN
  • Install the DTrace software packages
  • Load the DTrace kernel modules
  • List DTrace probes
  • Use the DTrace command line interface
  • Run DTrace scripts
  • Access the DTrace guide and DTrace tutorial

You can learn more about DTrace and other advanced linux tasks by taking the training course relevant to the version of your operating system:

DTrace is one of the topics tested in the Oracle Certified Professional: Oracle Linux 6 Advanced System Administration exam.

For more information about the Oracle Linux curriculum, go to http://oracle.com/education/linux.

Monday Nov 02, 2015

New Userspace Patching with Oracle Ksplice!

Last week, Larry Ellison introduced userspace patching with Oracle Ksplice. This is a groundbreaking addition to the already extensive capabilities of Ksplice, giving administrators the tools they need to cope with security threats and other issues without impacting running systems.

If you're unfamiliar with Ksplice, it provides zero-downtime patching (also known as “live patching") for Linux. With Ksplice, updates and errata (CVEs, etc.) can be applied to running systems without restarting applications or rebooting. This is a boon for organizations since scheduling downtime across a server farm is a significant event, and many companies using a variety of operating systems only perform patches periodically in a regular cycle. But being able to apply critical updates immediately–or remove them, if necessary–without impacting servers even under heavy load allows administrators to reduce the window of vulnerability for security issues to the bare minimum, making systems more secure. A fantastic primer on Ksplice can be found in Wim Coekaerts' blog post The Magic of Ksplice.

While Ksplice has been a great tool for applying patches without downtime, it has been focused exclusively on kernel patches. That is, until last week with the announcement of userspace patching for Ksplice.

Why is userspace patching important? Well, patching the kernel as Ksplice has done for years solves a number of issues. It lets you patch security vulnerabilities at the kernel level, it allows you to apply patches to do diagnostics, and so on. But applications rely on services available above the kernel (in “userspace”) to do many of their tasks. For example, glibc, the GNU C Library, is the standard C and C++ library used by applications on Linux. And OpenSSL provides secure networking services for applications so applications don’t have to implement these features from scratch. But patching the kernel doesn’t help with changes that need to be made in these system wide libraries.

These standard libraries are very useful because they allow the community to optimize and standardize on how common tasks are accomplished. But since they are used by so many applications, a flaw in one of these libraries creates widespread exposure. Just such an exposure happened with the Heartbleed Bug, where an issue with OpenSSL left thousands of servers at risk.

With userspace patching in Ksplice, Oracle can now provide you with the tools to patch these userspace libraries without downtime. At Oracle OpenWorld last week, we were showing attendees in the Oracle Linux, Oracle VM, and OpenStack Showcase how we can apply userspace patches for the Ghost and Heartbleed vulnerabilities, check that the systems were indeed secured, and then roll those patches back to their unsecured state, all in a couple of minutes and without stopping running applications. This is the power of the new userspace feature of Ksplice. In this first release of userspace patching, the focus is on glibc and OpenSSL since this will cover many of the security related issues customers will run into. 

With the addition of userspace patching, a great tool just got even better. Ksplice can now patch the running Linux kernel and also patch userspace glibc and OpenSSL without downtime. Userspace patching is a huge development in zero-downtime patching, and another tool in the toolbox for administrators needing to cope with critical updates. This brings the magic of Ksplice from the kernel up to userspace, making your systems safer.

Userspace patching for Ksplice is available now in the enhanced Ksplice client for customers with Oracle Linux Premier Support. You can read about it in the latest Ksplice documentation and when you’re ready to try it out, you can enable it on the Unbreakable Linux Network and install it on your systems.
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