- ceph-users - lists.ceph.io

International B2B Marketplace
by Grace Stefan 04 Sep '20

04 Sep '20

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by mary smith 04 Sep '20

04 Sep '20

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Actual block size of osd
by Ragan, Tj (Dr.) 04 Sep '20

04 Sep '20

Hi All, Does anyone know how to get the actual block size used by an osd? I’m trying to evaluate 4k vs 64k min_alloc_size_hdd and want to verify that the newly created osds are actually using the expected block size. Thanks, -TJ Ragan

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Re: Change fsid of Ceph cluster after splitting it into two clusters
by Dan van der Ster 03 Sep '20

03 Sep '20

Hi Wido, Out of curiosity, did you ever work out how to do this? Cheers, Dan On Tue, Feb 12, 2019 at 6:17 PM Wido den Hollander <wido(a)42on.com> wrote: > > Hi, > > I've got a situation where I need to split a Ceph cluster into two. > > This cluster is currently running a mix of RBD and RGW and in this case > I am splitting it into two different clusters. > > A difficult thing to do, but it's possible. > > One problem that stays though is that after the split both Ceph clusters > have the same fsid and that might be confusing. > > Is there a way to change the fsid of an existing cluster? > > Injecting an updated MONMAP and OSDMAP into the cluster? > > It's no problem if this has to be done offline, but I'm just wondering > if this is possible. > > Wido > _______________________________________________ > ceph-users mailing list > ceph-users(a)lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

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Is it possible to change the cluster network on a production ceph?
by psousa＠alticelabs.com 03 Sep '20

03 Sep '20

Hello people, I am trying to change the cluster network in a production ceph. I'm having problems, after changing the ceph.conf file and restarting a osd the cluster is always going to HEALTH_ERROR with blocked requests. Only by returning to the previous configuration and restarting the same osd make the cluster going to OK. So, my question is: is it possible to change the cluster network on a production ceph without stopping the service and destroying data? If so, how? Anticipated thanks Paulo Sousa

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03 Sep '20

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cephadm grafana url
by Robert Sander 03 Sep '20

03 Sep '20

Hi, How do I set the correct URL to Grafana in a new cephadm bootstrapped cluster? When I try to access the performance parts of the Ceph dashboard my browser tells me that it cannot resolve the short hostname that is presented in the URL to Grafana. cephadm seems to use only the hostname and not the FQDN which is needed when using the Dashboard from the browser (at least in this setup). This obviously did not work: root@ceph01:~# ceph dashboard get-grafana-api-url https://ceph01:3000 root@ceph01:~# ceph dashboard set-grafana-api-url https://ceph01.ceph.heinlein-akademie.de:3000 Option GRAFANA_API_URL updated root@ceph01:~# ceph config get mgr mgr/dashboard/GRAFANA_API_URL https://ceph01:3000 root@ceph01:~# ceph config set mgr mgr/dashboard/GRAFANA_API_URL https://ceph01.ceph.heinlein-akademie.de:3000 root@ceph01:~# ceph config get mgr mgr/dashboard/GRAFANA_API_URL https://ceph01:3000 root@ceph01:~# ceph dashboard get-grafana-api-url https://ceph01:3000 Regards -- Robert Sander Heinlein Support GmbH Schwedter Str. 8/9b, 10119 Berlin http://www.heinlein-support.de Tel: 030 / 405051-43 Fax: 030 / 405051-19 Zwangsangaben lt. §35a GmbHG: HRB 93818 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin

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java client cannot visit rgw behind nginx
by Zhenshi Zhou 03 Sep '20

03 Sep '20

Hi My fellows wanna use ceph rgw to store ES backup and Nexus blobs. But the services cannot connect to the rgw with s3 protocol when I provided them with the frontend nginx address(virtual ip). Only when they use the backend rgw's address(real ip) the ES and Nexus works well with rgw. Has anyone meet the same issue? Thanks

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failed to authpin, subtree is being exported in 14.2.11
by Dan van der Ster 03 Sep '20

03 Sep '20

Hi all, We had a stuck mds ops this morning on a 14.2.11 cephfs cluster. I tried to ls the path from another client and that blocked. The ops were like this: # egrep 'desc|flag|age' ops.txt "description": "client_request(client.1212755100:37475 lookup #0x1003e229d38/analytics-logs 2020-09-03 04:30:45.607640 caller_uid=2004, caller_gid=2004{})", "age": 4975.7069706660004, "flag_point": "failed to authpin, subtree is being exported", "description": "client_request(client.1212755100:37477 lookup #0x1003e229d38/bundled-plugins 2020-09-03 04:31:01.064591 caller_uid=2004, caller_gid=2004{})", "age": 4960.2499044630003, "flag_point": "failed to authpin, subtree is being exported", ... The full list of stuck ops is at https://termbin.com/8itv We had only just yesterday enabled 2 active mds's on this cluster. I don't have much info about this client, other than that it has been running for several weeks successfully until we enabled the 2nd active mds. To clear out the slow ops we evicted client.1212755100, and then we reduced back to 1 active mds so it doesn't happen again. Any ideas what might have triggered this? Cheers, Dan

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OSD memory (buffer_anon) grows once writing stops
by Wido den Hollander 03 Sep '20

03 Sep '20

Hi, The cluster I'm writing about has a long history (months) of instability mainly related to large RocksDB database and high memory consumption. The use-case is RGW with an EC8+3 pool for data. In the last months this cluster has been suffering from OSDs using much more memory then osd_memory_target and mainly allocated in buffer_anon. After removing a lot of data from the cluster and re-installing all OSDs there is one thing remaining: High memory usage when *NOT* writing data to the cluster. There is a script running which keeps writing data to RADOS in a slow pace. Once this stops we are observing the memory usage of the OSDs grow steadily and also see the RocksDB databases of the BlueStore OSDs grow. Once we start to write again memory usage (buffer_annon) reduces. I think this is related to the pglogs, but even trimming all the pglogs does not solve this issue. Has anybody seen this before or has any clues where to start looking? Ceph version 14.2.8 Wido

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