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-rw-r--r--synapse/metrics/__init__.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py
index 3f7b7158aa..943d637459 100644
--- a/synapse/metrics/__init__.py
+++ b/synapse/metrics/__init__.py
@@ -130,6 +130,10 @@ def _process_fds():
     counts = {(k,): 0 for k in TYPES.values()}
     counts[("other",)] = 0
 
+    # Not every OS will have a /proc/self/fd directory
+    if not os.path.exists("/proc/self/fd"):
+        return counts
+
     for fd in os.listdir("/proc/self/fd"):
         try:
             s = os.stat("/proc/self/fd/%s" % (fd))