Ceph » rgw

I have installed CEPH cluster using cephadm (octopus version)

Now I’m having problems installing rados gateway for CEPH cluster using this instruction:
https://docs.ceph.com/en/latest/man/8/radosgw/

I’m following each step, but at the end command:

sudo /etc/init.d/ceph-radosgw start

not working as this script could not be found

So I’m running:

systemctl start ceph-radosgw.target

And it runs the service, then checking the status of the service shows that it’s running.

Also I have tried this instruction: https://docs.oracle.com/cd/E37670_01/E66514/html/ceph-ald_jwc_2t-configure.html
But it doesn't work either.

Anyway I don’t see any gateway in UI and radosgw-admin just hangs for infitity so I cannot create users.Debug logs show that there is infinite print of following string:
"2020-10-20T09:37:51.105+0000 7f0886696700 1 -- 172.31.14.234:0/249873515 --> [v2:172.31.14.234:6816/3880555789,v1:172.31.14.234:6817/3880555789] -- ping magic: 0 v1 -- 0x7f0848003890 con 0x55d7b52e3030"

Is there someone who faced the same problem?
Maybe there is something I have to check and do additionally? Also when I run above commands it says that monitor configuration is not found, is it related issues?