General configuration options

Understand the general configuration options for Ceph.

fsid

Description: The file system ID. One per cluster.

Type: >UUID

Required: No.

Default: N/A. Usually generated by deployment tools.

admin_socket

Description: The socket for executing administrative commands on a daemon, irrespective of whether Ceph monitors have established a quorum.

Type: >String

Required: No

Default: /var/run/ceph/$cluster-$name.asok

pid_file

Description: The file in which the monitor or OSD will write its PID. For instance, /var/run/$cluster/$type.$id.pid creates /var/run/ceph/mon.a.pid for the mon with id a running in the ceph cluster. The pid file is removed when the daemon stops gracefully. If the process is not daemonized (meaning it runs with the -f or -d option), the pid file is not created.

Type: >String

Required: No

Default: No

chdir

Description: The directory Ceph daemons change to once they are up and running. Default / directory recommended.

Type: >String

Required: No

Default: /

max_open_files

Description: If set, when the IBM Storage Ceph cluster starts, Ceph sets the max_open_fds at the OS level (that is, the max # of file descriptors). It helps prevent Ceph OSDs from running out of file descriptors.

Type: >64-bit Integer

Required: No

Default: 0

fatal_signal_handlers

Description: If set, we will install signal handlers for SEGV, ABRT, BUS, ILL, FPE, XCPU, XFSZ, SYS signals to generate a useful log message.

Type: >Boolean

Default: true