Add Ceph monitor backup

roles/base/templates/etc/cron.daily/mon-backup.j2

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# Backup the Ceph monitor data
+# {{ ansible_managed }}
+
+set -o errexit
+
+BACKUP_DIR="/srv/backups"
+DATE="$( date +%Y%m%d )"
+HOSTNAME="$( hostname -s )"
+
+if [[ ! -d ${BACKUP_DIR} ]]; then
+    mkdir -p ${BACKUP_DIR}
+fi
+
+pushd ${BACKUP_DIR} &>/dev/null
+
+MON_BACKUP_FILENAME_BASE="ceph-mon-backup"
+MON_BACKUP_FILENAME="${BACKUP_DIR}/${MON_BACKUP_FILENAME_BASE}.${DATE}.tar.xz"
+
+tar -cJf ${MON_BACKUP_FILENAME} /var/lib/ceph/mon
+find ${BACKUP_DIR} -type f -name "${MON_BACKUP_FILENAME_BASE}*" -mtime +7 -exec rm {} \;
+
+popd &>/dev/null