ceph-crash user requirements

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Hi,


I just stumpled over some log messages regarding ceph-crash:

May 10 09:32:19 bigfoot60775 ceph-crash[2756]: WARNING:ceph-crash:post /var/lib/ceph/crash/2022-05-10T07:10:55.837665Z_7f3b726e-0368-4149-8834-6cafd92fb13f as client.admin failed: b'2022-05-10T09:32:19.099+0200 7f911ad92700 -1 auth: unable to find a keyring on /etc/ceph/ceph.client.admin.keyring,/etc/ceph/ceph.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin,: (2) No such file or directory\n2022-05-10T09:32:19.099+0200 7f911ad92700 -1 AuthRegistry(0x7f911405b178) no keyring found at /etc/ceph/ceph.client.admin.keyring,/etc/ceph/ceph.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin,, disabling cephx\n2022-05-10T09:32:19.107+0200 7f9119b30700 -1 auth: unable to find a keyring on /etc/ceph/ceph.client.admin.keyring,/etc/ceph/ceph.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin,: (2) No such file or directory\n2022-05-10T09:32:19.107+0200 7f9119b30700 -1 AuthRegistry(0x7f91140609d0) no keyring found at /etc/ceph/ceph.client.admin.keyring,/etc/ceph/ceph.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin,, disabling cephx\n2022-05-10T09:32:19.107+0200 7f9119b30700 -1 auth: unable to find a keyring on /etc/ceph/ceph.client.admin.keyring,/etc/ceph/ceph.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin,: (2) No such file or directory\n2022-05-10T09:32:19.107+0200 7f9119b30700 -1 AuthRegistry(0x7f9119b2efe0) no keyring found at /etc/ceph/ceph.client.admin.keyring,/etc/ceph/ceph.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin,, disabling cephx\n[errno 2] RADOS object not found (error connecting to the cluster)\n'


This cluster is a manual setup, no cephadm or other stuff. We do not deploy the admin key to the OSD nodes unless absolutely necessary...


How can I configure a separate cephx user for ceph-crash? Which capabilities are required for that user?


Regards,

Burkhard


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