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Announcing Oracle Container Services 1.1.12 for use with Kubernetes

David Gilpin
Principal Product Manager

Oracle is pleased to announce the general availability of Oracle Container Services 1.1.12 for use with Kubernetes which is based on Kubernetes version 1.12.5, as released upstream. It is available for Oracle Linux 7 and is designed to integrate with the Oracle Container Runtime for Docker, provided and supported by Oracle. Oracle Container Services for use with Kubernetes runs in a series of Docker containers which are available from the Oracle Container Registry

This release maintains Oracle's commitment to conformance with the upstream project and is Certified Kubernetes by the Cloud Native Computing Foundation (CNCF).

New features in this release:

  • Support for high availability multi-master clusters
    kubeadm-ha-setup provides a setup and configuration tool to lessen the administrative burden in the creation of  "high availability" clusters.
     
  • Replacement of KubeDNS with CoreDNS
    CoreDNS is introduced and functions as the cluster DNS service. CoreDNS is installed by default on all new clusters, and support for KubeDNS is deprecated. Note that CoreDNS support requires the Unbreakable Enterprise Kernel Release 5 for Oracle Linux 7 or later. Although Oracle makes KubeDNS and support for the Unbreakable Enterprise Kernel Release 4 for Oracle Linux 7 available for users upgrading from earlier versions, the KubeDNS configuration is deprecated and future upgrades from this combination may not be possible.

     
  • Flexvolume driver for Oracle Cloud Infrastructure

The flexvolume driver enables you to add block storage volumes hosted on Oracle Cloud Infrastructure to your Kubernetes cluster.  In this release, flexvolume driver for Oracle Cloud Infrastructure is a technical preview, you can read more at https://github.com/oracle/oci-flexvolume-driver

Additional features in this release of Oracle Container Services for use with Kubernetes include upstream Kubernetes 1.12.5 software packaged for Oracle Linux, improved setup and configuration utilities, updated Kubernetes Dashboard software, improved cluster backup and restore tools, and integration testing for use with Oracle Cloud Infrastructure.

For more information about these and other new features, please review the Oracle Container Services for Use with Kubernetes User Guide. The guide also contains documentation on how to use the new setup and configuration utility to install a multi-master cluster as well as upgrade existing clusters. Note that Oracle does not support upgrading an existing single-master cluster to a high availability cluster.

Installation and Update

Oracle Container Services 1.1.12 for use with Kubernetes is free to download from the Oracle Linux yum server. Customers are encouraged to use the latest updates for Oracle Container Services for use with Kubernetes that are released on the Oracle Linux yum server and on Oracle's Unbreakable Linux Network (ULN). You can use the standard yum update command to perform an upgrade.

For more information about how to install and configure Oracle Container Services for use with Kubernetes, please review the Oracle Container Services for use with Kubernetes User's Guide.

Oracle does not support Kubernetes on systems where the ol7_preview, ol7_developer, or ol7_developer_EPEL yum repositories or ULN channels are enabled, or where software from these repositories, or channels, is currently installed on the systems where Kubernetes runs. 

Support

This release of Oracle Container Services for use with Kubernetes is made available for Oracle Linux 7 and is designed to integrate with Oracle Container Runtime for Docker. Support is available to customers having an Oracle Linux Premier Support subscription and is restricted to the combination of Oracle Container Services for Kubernetes and Oracle Container Runtime for Docker on Oracle Linux 7. Refer to Oracle Linux 7 License Information User Manual for information about Oracle Linux support levels.

Kubernetes® is a registered trademark of The Linux Foundation in the United States and other countries, and is used pursuant to a license from The Linux Foundation.

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