/usr/bin/ceph-crush-location is in ceph-common 10.1.2-0ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | #!/bin/sh
#
# Generate a CRUSH location for the given entity
#
# The CRUSH location consists of a list of key=value pairs, separated
# by spaces, all on a single line. This describes where in CRUSH
# hierarhcy this entity should be placed.
#
# Arguments:
# --cluster <clustername> name of the cluster (see /etc/ceph/$cluster.conf)
# --type <osd|mds|client> daemon/entity type
# --id <id> id (osd number, mds name, client name)
#
# if we start up as ./ceph-crush-location, assume everything else is
# in the current directory too.
if [ `dirname $0` = "." ] && [ $PWD != "/usr/bin" ]; then
BINDIR=.
SBINDIR=.
LIBDIR=.
ETCDIR=.
else
BINDIR=/usr/bin
SBINDIR=/usr/sbin
LIBDIR=/usr/lib/x86_64-linux-gnu/ceph
ETCDIR=/etc/ceph
fi
usage_exit() {
echo "usage: $0 [--cluster <cluster>] --id <id> --type <osd|mds|client>"
exit
}
cluster="ceph"
type=""
id=""
while [ $# -ge 1 ]; do
case $1 in
--cluster | -C)
shift
cluster="$1"
shift
;;
--id | -i)
shift
id="$1"
shift
;;
--type | -t)
shift
type="$1"
shift
;;
*)
echo "unrecognized option '$1'"
usage_exit
;;
esac
done
if [ -z "$type" ]; then
echo "must specify entity type"
usage_exit
fi
if [ -z "$id" ]; then
echo "must specify id"
usage_exit
fi
# try a type-specific config, e.g. 'osd crush location'
location="$($BINDIR/ceph-conf --cluster=${cluster:-ceph} --name=$type.$id --lookup ${type}_crush_location || :)"
if [ -n "$location" ]; then
echo $location
exit 0
fi
# try a generic location
location="$($BINDIR/ceph-conf --cluster=${cluster:-ceph} --name=$type.$id --lookup crush_location || :)"
if [ -n "$location" ]; then
echo $location
exit 0
fi
# spit out something generic
echo "host=$(hostname -s) root=default"
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