In our third and final installment (see: part one & part two), let’s take a look at some high-level use cases for Linux containers as well as finally (finally) defending what I like to call “pet” containers. From a general perspective, we see three repeated high-level use cases for containerizing applications:
- The fully orchestrated, multi-container application as you would create in OpenShift via the Red Hat Container Development Kit;
- Loosely orchestrated containers that don’t use advanced features like application templates and Kubernetes; and
- Pet containers.
Continue reading “In Defense of the Pet Container, Part 3: Puppies, Kittens and… Containers”
This article is one of the blog posts dedicated to use of Identity Management (IdM) and related technologies to address the Payment Card Industry Data Security Standard (PCI DSS). This specific post is related to requirement one – install and maintain a firewall configuration to protect cardholder data. The outline and mapping of individual articles to the requirements can be found in the overarching post that started the series.
The first requirement of the PCI standard talks about the firewalls and networking. While Red Hat’s Identity Management solution is not directly related to setting up networks and firewall rules, there are several aspects of IdM that
Continue reading “PCI Series: Requirement 1 – Install and Maintain a Firewall Configuration to Protect Cardholder Data”
The Payment Card Industry Data Security Standard (PCI DSS) is not new. It has existed for several years and provides security guidelines and best practices for the storage and processing of personal cardholder data. This article takes a look at PCI DSS 3.2 (published in April of 2016) and shows how Identity Management in Red Hat Enterprise Linux (IdM) and related technologies can help customers to address PCI DSS requirements to achieve and stay compliant with the standard. If you need a copy of the PCI DSS document it can be acquired from the document library at the following site: www.pcisecuritystandards.org
In October of 2015 Red Hat published a paper that gives an overview of the PCI DSS standard and shows how Red Hat Satellite and other parts of the Red Hat portfolio can help customers to address their PCI compliance challenges. In this post I would like to expand on this paper and drill down into more detail about
Continue reading “Identity Management and Related Technologies and their Applicability to PCI DSS”
There are two supported protocols in Red Hat Enterprise Linux for synchronization of computer clocks over a network. The older and more well-known protocol is the Network Time Protocol (NTP). In its fourth version, NTP is defined by IETF in RFC 5905. The newer protocol is the Precision Time Protocol (PTP), which is defined in the IEEE 1588-2008 standard.
The reference implementation of NTP is provided in the ntp package. Starting with Red Hat Enterprise Linux 7.0 (and now in Red Hat Enterprise Linux 6.8) a more versatile NTP implementation is also provided via the chrony package, which can usually synchronize the clock with better accuracy and has other advantages over the reference implementation. PTP is implemented in the linuxptp package.
With two different protocols designed for synchronization of clocks, there is an obvious question as to which one is
Continue reading “Combining PTP with NTP to Get the Best of Both Worlds”
Hello again! In this post I will be sharing some ideas about what you can do to solve a complex identity management challenge.
As the adoption of Identity Management (IdM) grows and especially in the case of heterogeneous environments where some systems are running Linux and user accounts are in the Active Directory (AD) – the question of renaming hosts becomes more and more relevant. Here is a set of requirements that we often hear from customers
Continue reading “I Really Can’t Rename My Hosts!”
In our first post defending the pet container, we looked at the challenge of complexity facing modern software stacks and one way that containers address this challenge through aggregation. In essence, the Docker “wrapper” consolidates the next level of the stack, much like RPM did at the component level, but aggregation is just the beginning of what the project provides.
If we take a step back and look at the Docker project in context, there are four aspects that contribute to its exceptional popularity:
- it simplifies the way users interact with the kernel, for features we have come to call Linux containers;
- it’s a tool and format for aggregate packaging of software stacks to be deployed into containers;
- it is a model for layering generations of changes on top of each other in a single inheritance model;
- it adds a transport for these aggregate packages.
Continue reading “In Defense of the Pet Container, Part 2: Wrappers, Aggregates and Models… Oh My!”
Identity management solutions integrate systems, services, and applications into a single ecosystem that provides authentication, access control, enterprise SSO, identity information and the policies related to those identities. While I have dedicated time to explaining how to provide these capabilities to Linux systems – it is now time to broaden the scope and talk a little bit about services and applications.
In some ways, services and applications are very similar. They are both usually
Continue reading “Identity Management and Application Integration”
Red Hat has long advocated for the importance of cross-industry IT standards, with the intention of enabling ecosystems with broad industry participation and providing a common basis for innovation. Perhaps even more importantly, these standards can help drive adoption of new technologies within enterprises, pushing the cycle of innovation even further along.
With ARM being one of these emerging ecosystems, we wanted to provide a snapshot of a recent event that highlights some of the standards-based work happening in this growing community: last week’s Linaro Connect conference in Bangkok, Thailand.
Continue reading “Connecting the Dots at Linaro Connect”
The rapid rise of Linux containers as an enterprise-ready technology in 2015, thanks in no small part to the technology provided by the Docker project, should come as no surprise: Linux containers offer a broad array of benefits to the enterprise, from greater application portability and scalability to the ability to fully leverage the benefits of composite applications.
But these benefits aside, Linux containers can, if IT security procedures are not followed, also cause serious harm to mission-critical operations. As Red Hat’s Lars Herrmann has pointed out, containers aren’t exactly transparent when it comes to seeing and understanding all of their internal code. This means that tools and technologies to actually see inside a container are critical to enterprises that want to deploy Linux containers in mission-critical scenarios.
Continue reading “Schrodinger’s Container: How Red Hat is Building a Better Linux Container Scanner”
Performance Co-Pilot (PCP) is an open source, distributed, metrics gathering and analysis system. In the latest release of Red Hat Enterprise Linux (i.e. 7.2), we’re not only shipping PCP 3.10.6, but a new browser based dashboard, Vector, which is built on top of PCP, and contributed by Netflix. Together, they can provide a comprehensive overview of a local, or remote machine.
In this tutorial, we’ll be utilizing two different machines to demonstrate
Continue reading “Getting Started: Using Performance Co-Pilot and Vector for Browser Based Metric Visualizations”