Topic: Technical Account Managers

Once you’ve installed a cluster using Red Hat Enterprise Linux High Availability Add-on, you might be wondering what you can do with your shiny new cluster.

Why is my Red Hat Enterprise Linux 7 OpenSSL version 1.0.1e, since upstream already has 1.1 or 1.0.2?

Why is Red Hat shipping PHP 6, when upstream is already in version 7?

Red Hat Enterprise Linux 6 is still in supported status! But Red Hat Enterprise Linux 6's apache is still version 2.2!

Or even: We ran our vulnerability scanner and it still reports that our all-updates-installed server has vulnerable packages!

Introduction: Important terms

Let’s get on the same page regarding some terms.

• Virtual Memory Management (VMM) is code in the kernel which, among other things, helps us to present each process with its own virtual address space.

The Story So Far

We’ve started looking at Control Groups in Red Hat Enterprise Linux 7. As you may recall from last time, these are kernel level controllers that allow us to manage resource use on a system. Now that we’ve talked about some basics and theory, let’s see how to actually use them to manage CPU, memory and I/O.

The Friday Five is a weekly Red Hat^® blog post with 5 of the week's top news items and ideas from or about
Red Hat and the technology industry. Consider it your weekly digest of things that caught our eye.

This is perhaps not a topic people consider very often, but I have seen this recently in a couple of cases - running ntpd in slew mode on a VM can cause the time to be wrong by several seconds, or even several minutes, so I thought I would write a blog post.

Many service and subscription-based enterprises today have some version of a Technical Account Management program. For most organizations, Technical Account Management is a paid offering that can be purchased by customers. The consistency we see on this service across the industry affirms the need and importance for such a program. However, what differentiates one program over another? Which program delivers the value that customers pay for and which do not?

C-What now?

Red Hat Ceph Storage is being deployed today in a variety of different roles from Cinder block and ephemeral storage for OpenStack environments to object storage repositories to standard block devices in traditional storage environments. Historically, customers would install Red Hat Ceph Storage manually or even with the legacy tool ceph-deploy.

One challenge with virtualization platforms, and particularly cloud environments with self-service catalogs, is that a small number of virtual instances can over-consume resources and starve other resources such as CPU, networking or storage bandwidth.