The Ceph Blog

Ceph blog stories provide high-level spotlights on our customers all over the world

  • July 11, 2018
    v10.2.11 Jewel released

    This point releases brings a number of important bugfixes and has a few important security fixes. This is expected to be the last Jewel release. We recommend all Jewel 10.2.x users to upgrade. Notable Changes¶ CVE 2018-1128: auth: cephx authorizer subject to replay attack (issue#24836, Sage Weil) CVE 2018-1129: auth: cephx signature check is weak …Read more

  • June 30, 2018
    Ceph Community Newsletter, June 2018 edition

    Hey Cephers! June 2018 is about to end and here is a summary of activities and news for Ceph Project. Enjoy! Announcements Mimic is out! After 9 months of work the Engineering released Ceph Mimic (v13.2.x series) with lots of features and improvements. A full list of changes, as well the upgrading instructions and a …Read more

  • June 29, 2018
    New in Mimic: iostat plugin

    (this is a guest post by Mohamad Gebai from SUSE, who developed the iostat plugin) The Mimic release of Ceph has brought with it a small yet useful feature for monitoring the activity on a Ceph cluster: the iostat command, which comes as a form of a Ceph manager plugin. The iostat module is enabled …Read more

  • June 27, 2018
    New in Mimic: Simplified RBD Image Cloning

    Motivation In previous Ceph releases, to create a clone of an image one must first create a snapshot and then mark the snapshot as protected before attempting to clone: $ rbd snap create parent@snap $ rbd snap protect parent@snap $ rbd clone parent@snap clone This was a necessary evil to ensure RBD performed the proper book-keeping …Read more

  • June 14, 2018
    New in Mimic: centralized configuration management

    One of the key new features in Ceph Mimic is the ability to manage the cluster configuration–what traditionally resides in ceph.conf–in a central fashion.  Starting in Mimic, we also store configuration information in the monitors internal database, and seamlessly manage the distribution of that config info to all daemons and clients in the system. Historically, …Read more

  • June 4, 2018
    Mimic contributor credits

    A new version of Ceph has been released, and we’ve had a steady inflow of new contributors and companies contributing to Ceph. The affiliation of authors to organizations can be updated by submitting a patch to There were around 284 authors affiliated to over 68 companies contributing during this release cycle. Over the Mimic release …Read more

  • June 1, 2018
    New in Mimic: Introducing a new Ceph Manager Dashboard

    After an intensive 9 month development cycle, the Ceph project is happy to announce their next stable release: Ceph 13.2.0 “Mimic” is the first version of Ceph that has been published under the revised release schedule in which a new stable release is published every nine months. Previously, Ceph releases were made available in a …Read more

  • June 1, 2018
    v13.2.0 Mimic released

    This is the first stable release of Mimic, the next long term release series. Please read the upgrade notes from previous releases carefully before upgrading. Major Changes from Luminous¶ Dashboard: The (read-only) Ceph manager dashboard introduced in Ceph Luminous has been replaced with a new implementation inspired by and derived from the openATTIC Ceph management …Read more

  • May 31, 2018
    Ceph Community Newsletter, May 2018 edition

    Hey Cephers! May 2018 was a very busy month for the project: the final development stages for Ceph Mimic release, the Ceph User Survey and several community events including KubeCon Europe in Copenhagen, Red Hat Summit in San Francisco, the OpenStack Summit in Vancouver and openSUSECon in Prague. Here’s a summary of our activities and …Read more

  • May 11, 2018
    v13.1.0 Mimic RC1 released

    This is the first release candidate for mimic, the next long term release. While this is not the final production release yet, consider testing this on your testing and non production clusters for a preview of upcoming features and importantly report any bugs in the tracker. Notable Changes¶ core: The pg force-recovery command will not …Read more

  • April 30, 2018
    Ceph Community Newsletter, April 2018 edition

    Hey Cephers! March was a very busy month for Ceph Project that we are releasing the Newsletter on April. Besides all Mimic development tasks we had our first Cephalocon in Beijing and we have lots of cool things to share with our vibrant community on this newsletter. We hope you enjoy it! Announcements Ceph user …Read more

  • April 24, 2018
    v12.2.5 Luminous released

    This is the fifth bugfix release of Luminous v12.2.x long term stable release series. This release contains a range of bug fixes across all compoenents of Ceph. We recommend all the users of 12.2.x series to update. Notable Changes MGR The ceph-rest-api command-line tool included in the ceph-mon package has been obsoleted by the MGR …Read more