diff --git a/meta-yocto/conf/local.conf.sample b/meta-yocto/conf/local.conf.sample
index 38507e3..c82cb7e 100644
--- a/meta-yocto/conf/local.conf.sample
+++ b/meta-yocto/conf/local.conf.sample
@@ -224,3 +224,31 @@ PATCHRESOLVE = "noop"
 # track the version of this file when it was generated. This can safely be ignored if
 # this doesn't mean anything to you.
 CONF_VERSION = "1"
+
+#
+# Disk space monitor, warning when the disk space or the amount of inode
+# is running low, it is enabled when BB_DISKMON_DIRS is set.
+#
+# Set the directories to monitor for disk usage, if more than one
+# directories are in the same device, then only one directory would be
+# warned since the monitor is based on the device.
+#
+BB_DISKMON_DIRS = "${TMPDIR} ${DL_DIR} ${SSTATE_DIR}"
+#
+# Set the minimum amount of disk space to warn, the unit can be G,
+# M or K, but do not use GB, MB or KB (B is not needed).
+# The default vaule is 1G if not set.
+#
+#BB_DISKMON_MINSPACE = "1G"
+#
+# Set the minimum amount of inodes to warn, the unit can be G, M or K.
+# The default value is 1K if not set.
+#
+#BB_DISKMON_MININODES = "1K"
+#
+# Set the monitor frequency, the unit can be h(hour), m(minute) or
+# s(second), when no unit is specified, the default unit is s(second),
+# for example, "60" means 60 seconds.
+# The default value is 60s if not set.
+#
+#BB_DISKMON_INTERVAL = "60s"