I find out with ceph orch ps
cephadm.8d0364fef6c92fc3580b0d022e32241348e6f11a7694d2b957cdafcb9d059ff2 srvcephprod04
stopped 4m ago - <unknown> <unknown>
<unknown>
<unknown>
cephadm.8d0364fef6c92fc3580b0d022e32241348e6f11a7694d2b957cdafcb9d059ff2 srvcephprod06
stopped 4m ago - <unknown> <unknown>
<unknown>
<unknown>
cephadm.8d0364fef6c92fc3580b0d022e32241348e6f11a7694d2b957cdafcb9d059ff2 srvcephprod07
stopped 4m ago - <unknown> <unknown>
<unknown>
<unknown>
And cannot remove.