Github user nchammas commented on a diff in the pull request:
https://github.com/apache/spark/pull/4162#discussion_r24211576
--- Diff: ec2/spark_ec2.py ---
@@ -1003,6 +1006,17 @@ def real_main():
DeprecationWarning
)
+ if opts.identity_file is not None:
+ if not os.path.exists(opts.identity_file):
+ print >> stderr,\
+ "ERROR: The identity file '{f}' doesn't
exist.".format(f=opts.identity_file)
+ sys.exit(1)
+
+ file_mode = os.stat(opts.identity_file).st_mode
+ if not (file_mode & S_IRUSR) or not oct(file_mode)[-2:] == '00':
+ print >> stderr, "ERROR: The identity file must be accessible
only by you."
--- End diff --
Per @shivaram's suggestion, maybe add an additional print statement here
like:
```
print >> stderr, 'You can fix this with: chmod 400
"{f}"'.format(f=opts.identity_file)
```
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