Hi guys.

I have one crash - containerized cluster - which upon start logs:
...
INFO:ceph-crash:pinging cluster to exercise our key

2025-08-18T14:59:59.663+0000 7fe9106bb640 -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

2025-08-18T14:59:59.663+0000 7fe9106bb640 -1 AuthRegistry(0x7fe908069670) no keyring found at /etc/ceph/ceph.client.admin.keyring,/etc/ceph/ceph.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin, disabling cephx

2025-08-18T14:59:59.664+0000 7fe9106bb640 -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

2025-08-18T14:59:59.664+0000 7fe9106bb640 -1 AuthRegistry(0x7fe9106b9ff0) no keyring found at /etc/ceph/ceph.client.admin.keyring,/etc/ceph/ceph.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin, disabling cephx

2025-08-18T14:59:59.665+0000 7fe90e430640 -1 monclient(hunting): handle_auth_bad_method server allowed_methods [2] but i only support [1]

2025-08-18T14:59:59.665+0000 7fe90dc2f640 -1 monclient(hunting): handle_auth_bad_method server allowed_methods [2] but i only support [1]

In that 'crash' container I have:
-> $ ll /etc/ceph/
total 16
-rw-------. 1 ceph ceph  81 Aug  6 13:26 ceph.client.crash.podster1.keyring
-rw-------. 1 ceph ceph 253 Aug  6 13:26 ceph.conf
-rw-------. 1 root root 151 Aug 18 04:20 ceph.keyring
-rw-r--r--. 1 root root  92 Jul 17 03:53 rbdmap

then:
-> $ ceph auth get client.admin
[client.admin]
    key = AQD....
    caps mds = "allow *"
    caps mgr = "allow *"
    caps mon = "allow *"
    caps osd = "allow *"

which key is in: /etc/ceph/ceph.keyring on this 'crash'

What is happening here can anybody suggest/tell?
Other 'crashes' remain that-error-free - but I wonder if that is only because they have had nothing to do yet.
This one 'crash' has - on the same node - monitor failing.

many thanks, L.
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