mgr/prometheus: assign a value to osd_dev_node when obj_store is not filestore or...

Fixes: https://tracker.ceph.com/issues/42017
Signed-off-by: jiahuizeng <jhzeng93@foxmail.com>

diff --git a/src/pybind/mgr/prometheus/module.py b/src/pybind/mgr/prometheus/module.py
index 1df5d6b6d63e8c59f91f89893be6d149415c3803..602dd63eaa7431ef1b876892fe89bef763f4dd62 100644 (file)
--- a/src/pybind/mgr/prometheus/module.py
+++ b/src/pybind/mgr/prometheus/module.py
@@ -634,6 +634,8 @@ class Module(MgrModule):
                 osd_wal_dev_node = osd_metadata.get('bluefs_wal_dev_node', '')
                 # collect bluestore db backend
                 osd_db_dev_node = osd_metadata.get('bluefs_db_dev_node', '')
+            else:
+                osd_dev_node = "unknown"
             if osd_dev_node and osd_dev_node == "unknown":
                 osd_dev_node = None