We're happy to announce 13th bug fix release of the Luminous v12.2.x long term stable release series. We recommend that all users upgrade to this release. Many thanks to all the contributors, in particular Yuri & Nathan, in getting this release out of the door. This shall be the last release of the Luminous series. For a detailed release notes, please check out the official blog entry at https://ceph.io/releases/v12-2-13-luminous-released/ Notable Changes --------------- * Ceph now packages python bindings for python3.6 instead of python3.4, because EPEL7 recently switched from python3.4 to python3.6 as the native python3. see the announcement[1] for more details on the background of this change. * We now have telemetry support via a ceph-mgr module. The telemetry module is absolutely on an opt-in basis, and is meant to collect generic cluster information and push it to a central endpoint. By default, we're pushing it to a project endpoint at https://telemetry.ceph.com/report, but this is customizable using by setting the 'url' config option with:: ceph telemetry config-set url '<your url>' You will have to opt-in on sharing your information with:: ceph telemetry on You can view exactly what information will be reported first with:: ceph telemetry show Should you opt-in, your information will be licensed under the Community Data License Agreement - Sharing - Version 1.0, which you can read at https://cdla.io/sharing-1-0/ The telemetry module reports information about CephFS file systems, including: - how many MDS daemons (in total and per file system) - which features are (or have been) enabled - how many data pools - approximate file system age (year + month of creation) - how much metadata is being cached per file system As well as: - whether IPv4 or IPv6 addresses are used for the monitors - whether RADOS cache tiering is enabled (and which mode) - whether pools are replicated or erasure coded, and which erasure code profile plugin and parameters are in use - how many RGW daemons, zones, and zonegroups are present; which RGW frontends are in use - aggregate stats about the CRUSH map, like which algorithms are used, how big buckets are, how many rules are defined, and what tunables are in use * A health warning is now generated if the average osd heartbeat ping time exceeds a configurable threshold for any of the intervals computed. The OSD computes 1 minute, 5 minute and 15 minute intervals with average, minimum and maximum values. New configuration option `mon_warn_on_slow_ping_ratio` specifies a percentage of `osd_heartbeat_grace` to determine the threshold. A value of zero disables the warning. New configuration option `mon_warn_on_slow_ping_time` specified in milliseconds over-rides the computed value, causes a warning when OSD heartbeat pings take longer than the specified amount. New admin command `ceph daemon mgr.# dump_osd_network [threshold]` command will list all connections with a ping time longer than the specified threshold or value determined by the config options, for the average for any of the 3 intervals. New admin command `ceph daemon osd.# dump_osd_network [threshold]` will do the same but only including heartbeats initiated by the specified OSD. * The configuration value `osd_calc_pg_upmaps_max_stddev` used for upmap balancing has been removed. Instead use the mgr balancer config `upmap_max_deviation` which now is an integer number of PGs of deviation from the target PGs per OSD. This can be set with a command like `ceph config set mgr mgr/balancer/upmap_max_deviation 2`. The default `upmap_max_deviation` is 1. There are situations where crush rules would not allow a pool to ever have completely balanced PGs. For example, if crush requires 1 replica on each of 3 racks, but there are fewer OSDs in 1 of the racks. In those cases, the configuration value can be increased. Getting Ceph ------------ * Git at git://github.com/ceph/ceph.git * Tarball at http://download.ceph.com/tarballs/ceph-12.2.13.tar.gz * For packages, see http://docs.ceph.com/docs/master/install/get-packages/ * Release git sha1: 584a20eb0237c657dc0567da126be145106aa47e [1]: https://lists.fedoraproject.org/archives/list/epel-announce@lists.fedoraproj... -- Abhishek Lekshmanan SUSE Software Solutions Germany GmbH GF: Felix Imendörffer HRB 21284 (AG Nürnberg)