• Stop taking aspirin to deal with headaches from troubleshooting network availability issues.

    Early in my career I was responsible for maintaining build machines for multiple software engineering teams. Those build machines not only built the actual binaries for the product but they also served up critical services leveraged by engineering teams across the company. Whenever we encountered networking issues with those machines, I distinctly remember opening my email inbox and being inundated with emails from coworkers complaining about problems connecting to those services. I had to...
    Posted 2016-09-23T15:44:13+00:00 - 2
  • Subscription-manager for the former Red Hat Network User: Part 7 - understanding the Red Hat Content Delivery Network

    alternate title: disconnected customers like nice things too. Overview The Red Hat Content Delivery Network (henceforth known as the CDN) is the source of content for Satellite 6. Understanding This document aims to document What the Red Hat CDN is How to mirror it. How to leverage many of the tools in the Satellite 6 product to easily mirror or copy it for disconnected usage What is the Red Hat CDN? The Red Hat Content Delivery Network, nominally accessed via cdn.redhat.com is a...
    Posted 2016-09-20T03:09:42+00:00 - 0
  • Subscription-manager for the former Red Hat Network User: Part 6 - understanding and improving the renewal experience

    Overview Shipped in Red Hat Satellite 6.2.2 are a number of tools to improve the renewal experience. Facts Subscriptions are attached to systems. Subscriptions grant access to content. Without a valid subscription, a system cannot access content. Renewals What is a renewal? A subscription renewal, for all effective purposes is when a subscription expires, and it is replaced with a new subscription. Renewals are at their core, a financial transaction between Red Hat and the customer, where the...
    Posted 2016-09-19T00:37:25+00:00 - 2
  • Red Hat Satellite Organization in Github

    At Red Hat Summit this year, we announced the Red Hat Satellite organization in Github as a means to provide a location to curate scripts/projects that Red Hat employees, customers, and community members have written for usage with Red Hat Satellite. We would like to leverage this organization in the following manner: Provide a clearinghouse of well maintained, but officially unsupported tools known to work with a supported version of Satellite. Allow users of Satellite such as yourselves to...
    Posted 2016-09-18T19:55:29+00:00 - 0
  • Sleep soundly. Insights has new rules to detect unexpected outages.

    Every system administrator knows the feeling of having to wake up in the middle of the night because a server crashed or lost connectivity. This is where Red Hat Insights comes in. Thanks to our expansive knowledge base, the Insights team has been able to identify several critical stability issues that could cause a system outage. Don’t let these issues catch you by surprise. Check out our latest stability rules here! Rule Description Reference The “rpmdbNextIterator” error exists in the...
    Posted 2016-09-16T20:07:01+00:00 - 0
  • Subscription-manager for the former Red Hat Network User - Part 5 - Working with subscriptions that require virt-who.

    Overview Many of the various subscriptions that Red Hat offers are sold with the following spirit & terms A subscription is purchased based upon the socket count of a hypervisor. The subscriptions allows some number of quests (usually an UNLIMITED quantity, but sometimes values of 1 & 4 are used) to be instantiated on that hypervisor. These subscriptions require virt-who, the daemon that collects & reports host/guest mapping. This document aims to provide some further insight to...
    Posted 2016-09-16T09:03:40+00:00 - 5
  • A bite of Python

    Being easy to pick up and progress quickly towards developing larger and more complicated applications, Python is becoming increasingly ubiquitous in computing environments. Though apparent language clarity and friendliness could lull the vigilance of software engineers and system administrators -- luring them into coding mistakes that may have serious security implications. In this article, which primarily targets people who are new to Python, a handful of security-related quirks are looked at...
    Posted 2016-09-07T13:30:00+00:00 - 0
  • Trends - CRC Errors

    CRC (Cyclic Redundancy Check) is a test to ensure data does not become corrupt when sent across networks or storage devices. The test begins by calculating a check value that is based on the data’s contents that will be sent over the network. The check value is recalculated when the data arrives at its destination, and if the recalculated check value differs from the initial check value, then the data has been corrupted. CRC Errors and RHEL Red Hat Enterprise Linux (RHEL) will log received CRC...
    Posted 2016-08-26T15:24:19+00:00 - 0
  • Subscription-manager for the former Red Hat Network User: Part 4 - Understanding Subscription Manifests

    working title: of Men, Mice and Manifests Overview With the introduction of the newer Systems Management tools such as Satellite 6, we introduced a new concept, the Subscription Manifest (which are different from Satellite 5 Entitlement XML certificates), as the means to import Subscriptions into Satellite for the purposes of synchronizing content and attaching subscriptions to systems. What is a subscription manifest? A subscription manifest is a digitally signed zip file containing: A...
    Posted 2016-08-26T09:00:36+00:00 - 2
  • Making systems ready for Satellite 6.2's remote execution

    Satellite 6.2 ships with the much anticipated remote execution feature, which allows you to run scripts and jobs on a group of systems and then gather and view the output in the Satellite interface. Remote Execution by itself works fine out of the box for new machines, but already existing machines need to be bootstrapped by adding an SSH public key to root's ~/.ssh/authorized_keys. You can use Puppet to do this - assuming you are using Puppet at all - in two distinct ways: - you can use a full...
    Posted 2016-08-02T14:27:09+00:00 - 48
  • Satellite5, spacewalk-clone-by-date, and you!

    INTRODUCTION A typical workflow for a Satellite 5 installtion involves maintaining strict control over exactly what changes are available to registered systems. This is accomplished by cloning the channels synchronized from Red Hat Network, and limiting the clones to a given subset of the 'current' state of the original channel. spacewalk-clone-by-date is a tool available as part of the Satellite 5 subscription which aims to ease the process of creating and maintaining cloned channels. However...
    Posted 2016-07-28T13:38:58+00:00 - 2
  • Red Hat Satellite 6.2 is now available

    Red Hat is pleased to announce the general availability of Red Hat Satellite 6.2. Red Hat Satellite 6.0 included a redesigned product architecture to manage new types of content on a wide variety of platforms, including bare-metal, private, and public clouds. Satellite 6.2 continues to build on that release and features the following: Increase Efficiency with Automated Workflows Satellite 6.2 introduces remote execution, automating workflows and enabling users to take multiple actions against...
    Posted 2016-07-26T20:36:30+00:00 - 24
  • Using the Java Security Manager in Enterprise Application Platform 7

    JBoss Enterprise Application Platform 7 allows the definition of Java Security Policies per application. The way it's implemented means that we'll also be able to define security policies per module, in addition to define one per application. The ability to apply the Java Security Manager per application, or per module in EAP 7, makes it a versatile tool in the mitigation of serious security issues, or useful for applications with strict security requirements. The main difference between EAP 6...
    Posted 2016-07-13T13:30:00+00:00 - 0
  • Java Deserialization attacks on JBoss Middleware

    Recent research by Chris Frohoff and Gabriel Lawrence has exposed gadget chains in various libraries that allow code to be executed during object deserialization in Java. They've done some excellent research, including publishing some code that allows anyone to serialize a malicious payload that when deserialized runs the operating system command of their choice, as the user which started the Java Virtual Machine (JVM). The vulnerabilities are not with the gadget chains themselves but with the...
    Posted 2016-07-06T13:30:00+00:00 - 1
  • StackOverflow Assistance Pilot

    As a valued customer you have access to extensive content and certain products for developer use, which help you create your applications quickly. We want to assist you wherever you may look for help. We know developers love StackOverflow. For a limited time, as a subscriber you can sign up for our StackOverflow Assistance pilot. As part of this pilot, we will try to respond within 24 hours to your developer question on a Red Hat product within StackOverflow, if it hasn’t already been answered...
    Posted 2016-06-24T19:39:31+00:00 - 0
  • StackOverflow Pilot Program Monitored Tags

    Posted 2016-06-23T20:20:17+00:00 - 0
  • StackOverflow Pilot Program Monitored Tags

    Posted 2016-06-23T20:18:57+00:00 - 0
  • StackOverflow Pilot Program Monitored Tags

    As part of the StackOverflow Pilot Program, the list of StackOverflow tags we will be monitoring include: jboss jboss7.x jboss5.x jboss6.x Jboss-eap-6 jboss-eap-7 jbossamq jbossfuse jboss-logging jboss-web jboss-cli openshift openshift-client-tools openshift-enterprise jboss-messaging jboss-modules jboss-tools jboss-mdb jbossws jboss-esb jboss-rules jboss-cache jboss-portal Keycloak drools apache-camel cxf activemq karaf apache-karaf Fabric8 apiman jBPM bpm
    Posted 2016-06-23T20:15:14+00:00 - 0
  • Redefining how we share our security data.

    Red Hat Product Security has long provided various bits of machine-consumable information to customers and users via our Security Data page. Today we are pleased to announce that we have made it even easier to access and parse this data through our new Security Data API service. While we have provided this information since January 2005, it required end users to download the content from the site, which meant you either downloaded many files and kept a local copy, or you were downloading large...
    Posted 2016-06-23T13:30:00+00:00 - 1
  • How Red Hat uses CVSSv3 to Assist in Rating Flaws

    Humans have been measuring risk since the dawn of time. "I'm hungry, do I go outside my awesome cave here and forage for food? There might be something bigger, scarier, and hungrier than me out there...maybe I should wait?" Successfully navigating through life is a series of Risk/Reward calculations made each and every day. Sometimes, ideally, the choices are small ("Do I want fries with that?") while others can lead to catastrophic outcomes if the scenario isn't fully thought-through and...
    Posted 2016-06-21T20:16:50+00:00 - 0
  • Satellite 6.2 Beta 2 Now Available

    Download the beta here Review beta documentation Open a ticket on the beta Red Hat is pleased to announce the the second beta for Satellite 6.2. Beta 2 is immediately available to all current beta customers. The list of new features in this beta can be reviewed in the Beta 1 Announcement Satellite 6.2 Beta - What's New Lots of bug fixes based on your feedback The first beta had very good adoption. Thank you for your time. Based on your feedback we have resolved many bugs. Specifically, you...
    Posted 2016-06-15T12:39:58+00:00 - 4
  • The Answer is always the same: Layers of Security

    There is a common misperception that now that containers support seccomp we no longer need SELinux to help protect our systems. WRONG. The big weakness in containers is the container possesses the ability to interact with the host kernel and the host file systems. Securing the container processes is all about shrinking the attack surface on the host OS and more specifically on the host kernel. seccomp does a great job of shrinking the attack surface on the kernel. The idea is to limit the...
    Posted 2016-05-25T13:30:00+00:00 - 0
  • CVE-2016-3710: QEMU: out-of-bounds memory access issue

    Quick Emulator (aka QEMU) is an open source systems emulator. It emulates various processors and their accompanying hardware peripherals like disc, serial ports, NIC et al. A serious vulnerability of out-of-bounds r/w access through the Video Graphics Array (VGA) emulator was discovered and reported by Mr Wei Xiao and Qinghao Tang of Marvel Team at 360.cn Inc. This vulnerability is formally known as Dark Portal. In this post we'll see how Dark Portal works and its mitigation. VGA is a hardware...
    Posted 2016-05-11T13:30:00+00:00 - 1
  • Satellite 6.2 Beta Now Available

    Download the beta here Review beta documentation Open a ticket on the beta Red Hat is pleased to announce the Satellite 6.2 beta. Available to all current Satellite customers, the beta includes several highly demanded features. Satellite 6.2 Beta - New Features and Functionality Increase Efficiency with Automated Workflows Satellite 6.2 introduces remote execution, automating workflows and enabling users to take multiple actions against groups of systems. Now Satellite 6.2 can automatically...
    Posted 2016-04-26T14:23:02+00:00 - 36
  • Red Hat Product Security Risk Report: 2015

    This report takes a look at the state of security risk for Red Hat products for calendar year 2015. We look at key metrics, specific vulnerabilities, and the most common ways users of Red Hat products were affected by security issues. Our methodology is to look at how many vulnerabilities we addressed and their severity, then look at which issues were of meaningful risk, and which were exploited. All of the data used to create this report is available from public data maintained by Red Hat...
    Posted 2016-04-20T13:30:00+00:00 - 3



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