Following these best practices can make your upgrade path to CDH 5 relatively free of obstacles.
Upgrading the software that powers mission-critical workloads can be challenging in any circumstance. In the case of CDH, however, Cloudera Manager makes upgrades easy, and the built-in Upgrade Wizard, available with Cloudera Manager 5, further simplifies the upgrade process. The wizard performs service-specific upgrade steps that, previously, you had to run manually, and also features a rolling restart capability that reduces downtime for minor and maintenance version upgrades.
Cloudera Director 1.1 introduces new features and improvements that provide more options for creating and managing cloud deployments of Apache Hadoop. Here are details about how they work.
Cloudera Director, which was released in October of 2014, delivers production-ready, self-service interaction with Apache Hadoop clusters in cloud environments. You can find background information about Cloudera Director’s purpose and fundamental features in our earlier introductory blog post and technical overview blog post.
An improved upgrade wizard in Cloudera Manager 5.3 makes it easy to upgrade CDH on your clusters.
Upgrades can be hard, and any downtime to mission-critical workloads can have a direct impact on revenue. Upgrading the software that powers these workloads can often be an overwhelming and uncertain task that can create unpredictable issues. Apache Hadoop can be especially complex as it consists of dozens of components running across multiple machines.
We’re pleased to announce the release of Cloudera Enterprise 5.3 (comprising CDH 5.3, Cloudera Manager 5.3, and Cloudera Navigator 2.2).
This release continues the drumbeat for security functionality in particular, with HDFS encryption (jointly developed with Intel under Project Rhino) now recommended for production use. This feature alone should justify upgrades for security-minded users (and an improved CDH upgrade wizard makes that process easier).
Here are some of the highlights (incomplete;
A significant vulnerability affecting the entire Apache Hadoop ecosystem has now been patched. What was involved?
By now, you may have heard about the POODLE (Padding Oracle On Downgraded Legacy Encryption) attack on TLS (Transport Layer Security). This attack combines a cryptographic flaw in the obsolete SSLv3 protocol with the ability of an attacker to downgrade TLS connections to use that protocol. The result is that an active attacker on the same network as the victim can potentially decrypt parts of an otherwise encrypted channel.