Rancher Blog

Rancher 1.5 ensures enterprise-readiness

and March 6, 2017

Rancher 1.5On Friday we released version 1.5 of the Rancher container management platform.  The enhancements in this release are designed to help ensure enterprise- as well as production-readiness.  Additional webhooks improve Rancher extensibility and enable you to optimize overall infrastructure utilization.    New API, networking and container scheduling policies provide  fine-grained control of the container environment.  Additional enhancements include metadata performance improvements and conditional logic support for catalog templates.  Read more

Visit Rancher at Scale15x

March 1, 2017

If you’re headed to Pasadena, California this weekend for Scale15x, come see us! We’re excited to be presenting, and our talks are focused on practical knowledge for containers in production. While Rancher makes it easy to use containers and Kubernetes, building that ease of use has required specific expertise and disciplined thought on how teams are incorporating them into their projects today. We’re headed to Scale to share what we’ve learned, and to get feedback from you.

For those unfamiliar with the conference, the Southern California Linux Expo, now in its fifteenth year, is one of the largest gatherings of open source software and Linux users in the United States. Since its inception, it’s grown to encompass four days of amazing technical and community talks, stretched over a dozen tracks. Topics at the conference now go way beyond Linux, and its content now includes security, storage, and containers and virtualization.

Here’s a rundown of where we’ll be: Read more

Containers and Applications: Extend, Refactor, or Rebuild?

February 27, 2017

Technology is a constantly changing field, and as a result, any application can feel out of date in a matter of months. With this constant feeling of impending obsolescence, how can we work to maintain and modernize legacy applications? While rebuilding a legacy application from the ground up is an engineer’s dream, business goals and product timelines often make this impractical. It’s difficult to justify spending six months rewriting an application when the current one is working just fine, code debt be damned.

Unfortunately, we all know that product development is never that black and white. Compromises must be made on both sides of the table, meaning that while a complete rewrite might not be possible, the long-term benefits of application modernization efforts must still be valued. While many organizations don’t have the luxury of building brand new, cloud-native applications, there are still techniques that can be used to modernize existing applications using container technology like Docker. Read more

Top 5 challenges with deploying containers in production

February 24, 2017


Docker containers make app development easier. But deploying them in production can be hard.

Software developers are typically focused on a single application, application stack or workload that they need to run on a specific infrastructure. In production, however, a diverse set of applications run on a variety of technology (e.g. Java, LAMP, etc.), which need to be deployed on heterogeneous infrastructure running on-premises, in the cloud or both. This gives rise to several challenges Read more

RancherOS v0.8.0 released!

February 22, 2017

RancherOS v0.8.0 is now available!  This release has taken a bit more time than prior versions, as we’ve been laying more groundwork to allow us to do much faster updates, and to release more often.

Release Highlights

Using the Linux 4.9.9 mainline kernel Using the mainline stable Linux kernel should allow us to give container users access to new features faster – and will mean that RancherOS will have a simpler debug and update path for other software too.

Placing the installer container image in the ISO This change allows users to install RancherOS without internet access, and simplifies automated testability of changes. This adds about 13MB to the ISO, but means that you can do a basic install of RancherOS without pulling an image from the Docker Hub. Read more