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Applies to SUSE Enterprise Storage 7

About this guide Edit source

This guide focuses on deploying a basic Ceph cluster, and how to deploy additional services. It also covers the steps for upgrading to SUSE Enterprise Storage 7 from the previous product version.

SUSE Enterprise Storage 7 is an extension to SUSE Linux Enterprise Server 15 SP2. It combines the capabilities of the Ceph (http://ceph.com/) storage project with the enterprise engineering and support of SUSE. SUSE Enterprise Storage 7 provides IT organizations with the ability to deploy a distributed storage architecture that can support a number of use cases using commodity hardware platforms.

1 Available documentation Edit source

Note
Note: Online documentation and latest updates

Documentation for our products is available at https://documentation.suse.com, where you can also find the latest updates, and browse or download the documentation in various formats. The latest documentation updates can be found in the English language version.

In addition, the product documentation is available in your installed system under /usr/share/doc/manual. It is included in an RPM package named ses-manual_LANG_CODE. Install it if it is not already on your system, for example:

root # zypper install ses-manual_en

The following documentation is available for this product:

Deployment Guide

This guide focuses on deploying a basic Ceph cluster, and how to deploy additional services. It also cover the steps for upgrading to SUSE Enterprise Storage 7 from the previous product version.

Administration and Operations Guide

This guide focuses on routine tasks that you as an administrator need to take care of after the basic Ceph cluster has been deployed (day 2 operations). It also describes all the supported ways to access data stored in a Ceph cluster.

Security Hardening Guide

This guide focuses on how to ensure your cluster is secure.

Troubleshooting Guide

This guide takes you through various common problems when running SUSE Enterprise Storage 7 and other related issues to relevant components such as Ceph or Object Gateway.

SUSE Enterprise Storage for Windows Guide

This guide describes the integration, installation, and configuration of Microsoft Windows environments and SUSE Enterprise Storage using the Windows Driver.

2 Giving feedback Edit source

We welcome feedback on, and contributions to, this documentation. There are several channels for this:

Service requests and support

For services and support options available for your product, see http://www.suse.com/support/.

To open a service request, you need a SUSE subscription registered at SUSE Customer Center. Go to https://scc.suse.com/support/requests, log in, and click Create New.

Bug reports

Report issues with the documentation at https://bugzilla.suse.com/. Reporting issues requires a Bugzilla account.

To simplify this process, you can use the Report Documentation Bug links next to headlines in the HTML version of this document. These preselect the right product and category in Bugzilla and add a link to the current section. You can start typing your bug report right away.

Contributions

To contribute to this documentation, use the Edit Source links next to headlines in the HTML version of this document. They take you to the source code on GitHub, where you can open a pull request. Contributing requires a GitHub account.

For more information about the documentation environment used for this documentation, see the repository's README at https://github.com/SUSE/doc-ses.

Mail

You can also report errors and send feedback concerning the documentation to <>. Include the document title, the product version, and the publication date of the document. Additionally, include the relevant section number and title (or provide the URL) and provide a concise description of the problem.

3 Documentation conventions Edit source

The following notices and typographic conventions are used in this document:

  • /etc/passwd: Directory names and file names

  • PLACEHOLDER: Replace PLACEHOLDER with the actual value

  • PATH: An environment variable

  • ls, --help: Commands, options, and parameters

  • user: The name of user or group

  • package_name: The name of a software package

  • Alt, AltF1: A key to press or a key combination. Keys are shown in uppercase as on a keyboard.

  • File, File › Save As: menu items, buttons

  • AMD/Intel This paragraph is only relevant for the Intel 64/AMD64 architectures. The arrows mark the beginning and the end of the text block.

    IBM Z, POWER This paragraph is only relevant for the architectures IBM Z and POWER. The arrows mark the beginning and the end of the text block.

  • Chapter 1, Example chapter: A cross-reference to another chapter in this guide.

  • Commands that must be run with root privileges. Often you can also prefix these commands with the sudo command to run them as non-privileged user.

    root # command
    tux > sudo command
  • Commands that can be run by non-privileged users.

    tux > command
  • Notices

    Warning
    Warning: Warning notice

    Vital information you must be aware of before proceeding. Warns you about security issues, potential loss of data, damage to hardware, or physical hazards.

    Important
    Important: Important notice

    Important information you should be aware of before proceeding.

    Note
    Note: Note notice

    Additional information, for example about differences in software versions.

    Tip
    Tip: Tip notice

    Helpful information, like a guideline or a piece of practical advice.

  • Compact Notices

    Note

    Additional information, for example about differences in software versions.

    Tip

    Helpful information, like a guideline or a piece of practical advice.

4 Product life cycle and support Edit source

Different SUSE products have different product life cycles. To check the exact life cycle dates for SUSE Enterprise Storage, see https://www.suse.com/lifecycle/.

4.1 SUSE support definitions Edit source

For information about our support policy and options, see https://www.suse.com/support/policy.html and https://www.suse.com/support/programs/long-term-service-pack-support.html.

4.2 Support statement for SUSE Enterprise Storage Edit source

To receive support, you need an appropriate subscription with SUSE. To view the specific support offerings available to you, go to https://www.suse.com/support/ and select your product.

The support levels are defined as follows:

L1

Problem determination, which means technical support designed to provide compatibility information, usage support, ongoing maintenance, information gathering and basic troubleshooting using available documentation.

L2

Problem isolation, which means technical support designed to analyze data, reproduce customer problems, isolate problem area and provide a resolution for problems not resolved by Level 1 or prepare for Level 3.

L3

Problem resolution, which means technical support designed to resolve problems by engaging engineering to resolve product defects which have been identified by Level 2 Support.

For contracted customers and partners, SUSE Enterprise Storage is delivered with L3 support for all packages, except for the following:

  • Technology Previews

  • Sound, graphics, fonts and artwork

  • Packages that require an additional customer contract

  • Some packages shipped as part of the module Workstation Extension are L2-supported only.

  • Packages with names ending in -devel (containing header files and similar developer resources) will only be supported together with their main packages.

SUSE will only support the usage of original packages. That is, packages that are unchanged and not recompiled.

4.3 Technology previews Edit source

Technology previews are packages, stacks, or features delivered by SUSE to provide glimpses into upcoming innovations. Technology previews are included for your convenience to give you a chance to test new technologies within your environment. We would appreciate your feedback! If you test a technology preview, please contact your SUSE representative and let them know about your experience and use cases. Your input is helpful for future development.

Technology previews come with the following limitations:

  • Technology previews are still in development. Therefore, they may be functionally incomplete, unstable, or in other ways not suitable for production use.

  • Technology previews are not supported.

  • Technology previews may only be available for specific hardware architectures.

  • Details and functionality of technology previews are subject to change. As a result, upgrading to subsequent releases of a technology preview may be impossible and require a fresh installation.

  • Technology previews can be removed from a product at any time. SUSE does not commit to providing a supported version of such technologies in the future. This may be the case, for example, if SUSE discovers that a preview does not meet the customer or market needs, or does not comply with enterprise standards.

For an overview of technology previews shipped with your product, see the release notes at https://www.suse.com/releasenotes/x86_64/SUSE-Enterprise-Storage/7.

5 Ceph contributors Edit source

The Ceph project and its documentation is a result of the work of hundreds of contributors and organizations. See https://ceph.com/contributors/ for more details.

6 Commands and command prompts used in this guide Edit source

As a Ceph cluster administrator, you will be configuring and adjusting the cluster behavior by running specific commands. There are several types of commands you will need:

6.1 Salt-related commands Edit source

These commands help you to deploy Ceph cluster nodes, run commands on several (or all) cluster nodes at the same time, or assist you when adding or removing cluster nodes. The most frequently used commands are ceph-salt and ceph-salt config. You need to run Salt commands on the Salt Master node as root. These commands are introduced with the following prompt:

root@master # 

For example:

root@master # ceph-salt config ls

6.2 Ceph related commands Edit source

These are lower level commands to configure and fine tune all aspects of the cluster and its gateways on the command line, for example ceph, cephadm, rbd, or radosgw-admin.

To run Ceph related commands, you need to have read access to a Ceph key. The key's capabilities then define your privileges within the Ceph environment. One option is to run Ceph commands as root (or via sudo) and use the unrestricted default keyring 'ceph.client.admin.key'.

The safer and recommended option is to create a more restrictive individual key for each administrator user and put it in a directory where the users can read it, for example:

~/.ceph/ceph.client.USERNAME.keyring
Tip
Tip: Path to Ceph keys

To use a custom admin user and keyring, you need to specify the user name and path to the key each time you run the ceph command using the -n client.USER_NAME and --keyring PATH/TO/KEYRING options.

To avoid this, include these options in the CEPH_ARGS variable in the individual users' ~/.bashrc files.

Although you can run Ceph-related commands on any cluster node, we recommend running them on the Admin Node. This documentation uses the cephuser user to run the commands, therefore they are introduced with the following prompt:

cephuser@adm > 

For example:

cephuser@adm > ceph auth list
Tip
Tip: Commands for specific nodes

If the documentation instructs you to run a command on a cluster node with a specific role, it will be addressed by the prompt. For example:

cephuser@mon > 

6.2.1 Running ceph-volume Edit source

Starting with SUSE Enterprise Storage 7, Ceph services are running containerized. If you need to run ceph-volume on an OSD node, you need to prepend it with the cephadm command, for example:

cephuser@adm > cephadm ceph-volume simple scan

6.3 General Linux commands Edit source

Linux commands not related to Ceph, such as mount, cat, or openssl, are introduced either with the cephuser@adm > or root # prompts, depending on which privileges the related command requires.

6.4 Additional information Edit source

For more information on Ceph key management, refer to Section 30.2, “Key management”.

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