Ceph's config files comprise multiple sections, one global and one for each core Ceph component daemon. A few entries are mandatory; many are optional. Each section begins with a bracketed name, a convention that is often called the INI format, after its widespread use in MS-DOS. Let's go through these sections with some examples of their contents. We'll start with the ceph.conf file from the sandbox cluster we explored in Chapter 5, Deploying a Virtual Sandbox Cluster.
# cat /etc/ceph/ceph.conf [global] fsid = 5591400a-6868-447f-be89-thx1138656b6 max open files = 131072 mon initial members = ceph-mon0 mon host = 192.168.42.10 public network = 192.168.42.0/24 cluster network = 192.168.43.0/24 [client.libvirt] ...