Wsrtjtyk

The error appears in /var/log/syslog while creating new OSDs to a Ceph cluster. The symptoms are silent and ansible shows the following error:

    monclient: authenticate NOTE: no keyring found; disabled cephx 

authentication", "librados: client.admin authentication error (95)

 Operation not supported", " stderr: [errno 95] error connecting to the cluster"

The solution is with fixing the resource limit on the host.

• Find out the requested limits by the service.

$ vim /lib/systemd/system/ceph-osd@.service

• 
  

  Check out the limits

  
  
  

  
[Service]
LimitNOFILE=1048576
LimitNPROC=1048576


  
  


• 
  

  Check the max limits of your system.

  
  
  

  
# ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 148786
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 145383
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 148786
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited


  
  


• 
  

  Set the limits expected by the host.

  
  
  

  
[Service]
LimitNOFILE=145383
LimitNPROC=148786


  
  


• 
  

  Reload systemctl daemon

  
  
  

  
$ sudo systemctl daemon-reload


  
  



• Restart your service