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-rw-r--r--ironic/common/swift.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/ironic/common/swift.py b/ironic/common/swift.py
index 2a0a061dc..d485ff45c 100644
--- a/ironic/common/swift.py
+++ b/ironic/common/swift.py
@@ -97,7 +97,7 @@ class SwiftAPI(object):
operation = _("put container")
raise exception.SwiftOperationError(operation=operation, error=e)
- with open(filename, "r") as fileobj:
+ with open(filename, "rb") as fileobj:
try:
obj_uuid = self.connection.put_object(container,