Hi Guys, 
I am in the upgrade proccess from mimic to nautilus. 
The first step was to upgrade one cephmon, but after that this cephmon can not 
rejoin the cluster I see this at logs: 

2022-06-29 15:54:48.200 7fd3d015f1c0 0 ceph version 14.2.22 
(ca74598065096e6fcbd8433c8779a2be0c889351) nautilus (stable), process ceph-mon, 
pid 6121 
2022-06-29 15:54:48.206 7fd3d015f1c0 0 pidfile_write: ignore empty --pid-file 
2022-06-29 15:54:48.339 7fd3d015f1c0 0 load: jerasure load: lrc load: isa 


This machine is mon and mrg and the mgr daemon y working fine after upgrade 

At log messajes: 

Jun 29 15:54:38 cephmon03 systemd: ceph-mon@cephmon03.service failed. 
Jun 29 15:54:47 cephmon03 systemd: ceph-mon@cephmon03.service holdoff time 
over, scheduling restart. 
Jun 29 15:54:47 cephmon03 systemd: Stopped Ceph cluster monitor daemon. 
Jun 29 15:54:47 cephmon03 systemd: Started Ceph cluster monitor daemon. 
Jun 29 15:56:43 cephmon03 kernel: pickup invoked oom-killer: gfp_mask=0x201da, 
order=0, oom_score_adj=0 
Jun 29 15:56:43 cephmon03 kernel: pickup cpuset=/ mems_allowed=0 
Jun 29 15:56:43 cephmon03 kernel: CPU: 1 PID: 1047 Comm: pickup Not tainted 
3.10.0-957.5.1.el7.x86_64 #1 
Jun 29 15:56:43 cephmon03 kernel: Call Trace: 
Jun 29 15:56:43 cephmon03 kernel: [<ffffffff81761e41>] dump_stack+0x19/0x1b 
.......... 


Any advise? 
-- 
===================================================== 
Ibán Cabrillo Bartolomé 
Instituto de Fisica de Cantabria (IFCA-CSIC) 
Santander, Spain 
Tel: +34942200969/+34669930421 
Responsable del Servicio de Computación Avanzada 
====================================================== 


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