OSError: [Errno 13] Permission denied on /var/lib/gnocchi/

Issue

• Openstack update is failing

• These errors can be seen in gnocchi logs:

2017-12-08 10:53:26.813 163375 ERROR gnocchi.storage._carbonara   File "/usr/lib/python2.7/site-packages/gnocchi/storage/_carbonara.py", line 468, in process_new_measures
2017-12-08 10:53:26.813 163375 ERROR gnocchi.storage._carbonara     self._compute_and_store_timeseries(metric, measures)
2017-12-08 10:53:26.813 163375 ERROR gnocchi.storage._carbonara   File "/usr/lib/python2.7/site-packages/gnocchi/storage/_carbonara.py", line 499, in _compute_and_store_timeseries
2017-12-08 10:53:26.813 163375 ERROR gnocchi.storage._carbonara     self._create_metric(metric)
2017-12-08 10:53:26.813 163375 ERROR gnocchi.storage._carbonara   File "/usr/lib/python2.7/site-packages/gnocchi/storage/file.py", line 74, in _create_metric
2017-12-08 10:53:26.813 163375 ERROR gnocchi.storage._carbonara     os.mkdir(path, 0o750)
2017-12-08 10:53:26.813 163375 ERROR gnocchi.storage._carbonara OSError: [Errno 13] Permission denied: '/var/lib/gnocchi/57d281f4-111e-4f22-b231-1d6a523ad790'
2017-12-08 10:53:26.813 163375 ERROR gnocchi.storage._carbonara
2017-12-08 10:53:26.896 163388 ERROR gnocchi.storage._carbonara [-] Error processing new measures
2017-12-08 10:53:26.896 163388 ERROR gnocchi.storage._carbonara Traceback (most recent call last):
2017-12-08 10:53:26.896 163388 ERROR gnocchi.storage._carbonara   File "/usr/lib/python2.7/site-packages/gnocchi/storage/_carbonara.py", line 468, in process_new_measures
2017-12-08 10:53:26.896 163388 ERROR gnocchi.storage._carbonara     self._compute_and_store_timeseries(metric, measures)
2017-12-08 10:53:26.896 163388 ERROR gnocchi.storage._carbonara   File "/usr/lib/python2.7/site-packages/gnocchi/storage/_carbonara.py", line 499, in _compute_and_store_timeseries
2017-12-08 10:53:26.896 163388 ERROR gnocchi.storage._carbonara     self._create_metric(metric)
2017-12-08 10:53:26.896 163388 ERROR gnocchi.storage._carbonara   File "/usr/lib/python2.7/site-packages/gnocchi/storage/file.py", line 74, in _create_metric

2017-12-08 10:53:26.896 163388 ERROR gnocchi.storage._carbonara     os.mkdir(path, 0o750)
2017-12-08 10:53:26.896 163388 ERROR gnocchi.storage._carbonara OSError: [Errno 13] Permission denied: '/var/lib/gnocchi/d5284435-a3d9-4758-9f30-36f74955a08c'

NFS is used to store gnocchi data:

192.168.1.1:/NOCCHI_1 on /var/lib/gnocchi type nfs4 (rw,relatime,sync,vers=4.1,rsize=65536,wsize=65536,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=10.0.0.0,local_lock=none,addr=10.0.0.0)