I implemented Ceph Pacific Stable 6.0 with Ceph-Ansible on Ubuntu 20.04 LTS but when I want to change size of my pool from 3 to 1 with following command:
sudo ceph -n client.admin --keyring=/etc/ceph/ceph.client.admin.keyring osd pool set cephfs_data size 1
I get following error:
Error EPERM: configuring pool size as 1 is disabled by default.
[global]
in ceph.conf
:mon_allow_pool_size_one = true