OES 2018 Quick Start Guide For Administrators – Changes you should know about

The latest release of Micro Focus Open Enterprise Server, Open Enterprise Server 2018, comes with a set of new features, as well as performance and security enhancements.  More details on what is coming on OES 2018 can be found in the accompanying ‘What’s New’ article.  Key updates include SMB stack enhancements such as SMB 3.0 encryption, MAC platform support enhancements, NSS enhancements, and a brand new Cloud Integrated Storage (CIS) feature which is being introduced as a  technical preview.  Along with this, the underlying SLES platform is updated to SLES 12 SP2 and we now include eDirectory 9.0.3.  iPrint for OES 2018 is also available as an add-on which will allow hosting iPrint Appliance capabilities on OES. The new user interfaces, colours, and logos in OES 2018 give a fresh look and feel to the product.  In this article we take a quick look at some key changes that existing OES administrators should be aware of with respect to OES 2018.

Platform level changes

Beginning with OES 2018, OES is installed only through OES Install Media, which is a single integrated install that includes both SLES and OES. The SLES Mini ISO cannot be used to install OES 2018 and the support for the add-on install is deprecated. There is no SLES product available in OES 2018; the SLES product is deprecated by OES. However the Operating System Identification is not affected, it stays as is. So, any third party looking for compatibility of files @ /etc/os-release, /etc/SuSE-release etc should still report SLES information.

SLES12 SP2 and OES 2018 update channels are both now available via NCC. Access to these channels will be controlled ONLY by the OES Registration Key. The OES Server needs to talk to NCC only, to obtain updates for the entire OES system. This will enable us to qualify all the patches on OES Servers including SLES patches before releasing them on the patch channels and hitting the customer’s OES Servers. No more cases of a base kernel update or a base apache update – impacting OES production servers. SLES patches for OES servers also will get into the OES Patch cadence.

Two new patterns, Cloud Integrated Storage (CIS) and Cloud Integrated Storage (CIS) Data Scale are available. CIS allows the movement of cold data to cloud or object store based on policy with seamless user access to the data. The CIS pattern which can be installed independently without any additional OES pattern needs to be selected to install and configure CIS server. CIS Data Scale pattern will be supported in future for installing an additional data server for scaling. CIS is currently a Technical Preview only, please refer to the EULA before using it in a production environment.

The Btrfs filesystem is the default filesystem for the root (/) partition on SLES12 SP2. However, in OES we have made EXT4 the default file system the reason being that eDirectory does not support the Btrfs file system at this time. The Administrator has the option to choose Btrfs for the root partition provided that the eDirectory DIB path is configured to not be on Btrfs.

Systemd replaces the traditional System V init daemon in OES 2018. It is a new way of managing services. Instead of init scripts you will find the unit files. Init commands will continue to work for now as SLES provides backward compatibility. Unlike earlier behaviour, services should not be started using the binary directly as systemd will not have a view and would report incorrect status and behaviour. Even though cluster scripts for some of the services like DFS, DNS and DHCP refer to the binary directly, we have taken care by making appropriate changes in OES 2018. So, all existing cluster scripts should work seamlessly in a mixed node cluster environment.

The iSCSI service is disabled by default on SLES12 SP2 so because of the iSCSI service being down, the SBD partition might not be available and cause NCS (Cluster Services) to not come up after an upgrade. Ensure the iSCSI service is enabled and up after upgrade.

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This article was first published in Open Horizons Magazine, Issue 39, 2017/4, p7-8.

 
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