--- ceph_stable: True public_network: "192.168.3.0/24" cluster_network: "192.168.4.0/24" journal_size: 100 devices: - '/dev/sda' - '/dev/sdb' journal_collocation: True os_tuning_params: - { name: kernel.pid_max, value: 4194303 } - { name: fs.file-max, value: 26234859 }