It's right there in your config. mon osd report timeout = 900
See: http://docs.ceph.com/docs/jewel/rados/configuration/mon-osd-interaction/ ___ John Petrini NOC Systems Administrator // *CoreDial, LLC* // coredial.com // [image: Twitter] <https://twitter.com/coredial> [image: LinkedIn] <http://www.linkedin.com/company/99631> [image: Google Plus] <https://plus.google.com/104062177220750809525/posts> [image: Blog] <http://success.coredial.com/blog> Hillcrest I, 751 Arbor Way, Suite 150, Blue Bell PA, 19422 *P: *215.297.4400 x232 // *F: *215.297.4401 // *E: * jpetr...@coredial.com [image: Exceptional people. Proven Processes. Innovative Technology. Discover CoreDial - watch our video] <http://cta-redirect.hubspot.com/cta/redirect/210539/4c492538-6e4b-445e-9480-bef676787085> The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer. On Wed, Nov 30, 2016 at 6:39 AM, Manuel Lausch <manuel.lau...@1und1.de> wrote: > Hi, > > In a test with ceph jewel we tested how long the cluster needs to detect > and mark down OSDs after they are killed (with kill -9). The result -> 900 > seconds. > > In Hammer this took about 20 - 30 seconds. > > In the Logfile from the leader monitor are a lot of messeages like > 2016-11-30 11:32:20.966567 7f158f5ab700 0 log_channel(cluster) log [DBG] > : osd.7 10.78.43.141:8120/106673 reported failed by osd.272 > 10.78.43.145:8106/117053 > A deeper look at this. A lot of OSDs reported this exactly one time. In > Hammer The OSDs reported a down OSD a few more times. > > Finaly there is the following and the osd is marked down. > 2016-11-30 11:36:22.633253 7f158fdac700 0 log_channel(cluster) log [INF] > : osd.7 marked down after no pg stats for 900.982893seconds > > In my ceph.conf I have the following lines in the global section > mon osd min down reporters = 10 > mon osd min down reports = 3 > mon osd report timeout = 900 > > It seems the parameter "mon osd min down reports" is removed in jewel but > the documentation is not updated -> http://docs.ceph.com/docs/jewe > l/rados/configuration/mon-osd-interaction/ > > > Can someone tell me how ceph jewel detects down OSDs and mark them down in > a appropriated time? > > > The Cluster: > ceph version 10.2.3 (ecc23778eb545d8dd55e2e4735b53cc93f92e65b) > 24 hosts á 60 OSDs -> 1440 OSDs > 2 pool with replication factor 4 > 65536 PGs > 5 Mons > > -- > Manuel Lausch > > Systemadministrator > Cloud Services > > 1&1 Mail & Media Development & Technology GmbH | Brauerstraße 48 | 76135 > Karlsruhe | Germany > Phone: +49 721 91374-1847 > E-Mail: manuel.lau...@1und1.de | Web: www.1und1.de > > Amtsgericht Montabaur, HRB 5452 > > Geschäftsführer: Frank Einhellinger, Thomas Ludwig, Jan Oetjen > > > Member of United Internet > > Diese E-Mail kann vertrauliche und/oder gesetzlich geschützte > Informationen enthalten. Wenn Sie nicht der bestimmungsgemäße Adressat sind > oder diese E-Mail irrtümlich erhalten haben, unterrichten Sie bitte den > Absender und vernichten Sie diese E-Mail. Anderen als dem > bestimmungsgemäßen Adressaten ist untersagt, diese E-Mail zu speichern, > weiterzuleiten oder ihren Inhalt auf welche Weise auch immer zu verwenden. > > This e-mail may contain confidential and/or privileged information. If you > are not the intended recipient of this e-mail, you are hereby notified that > saving, distribution or use of the content of this e-mail in any way is > prohibited. If you have received this e-mail in error, please notify the > sender and delete the e-mail. > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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