ah, my point is duplicated to
https://bugs.launchpad.net/nova/+bug/1630664
** Changed in: keystone
Status: Confirmed => Opinion
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https://bugs.launchpad.net/bugs/1535640
Title:
Sometimes getting unable to establish connection error in Keystone
client
Status in OpenStack Identity (keystone):
Opinion
Bug description:
In Openstack HA environment, sometimes Kesystone client is throwing
the error "unable to establish connection error". This is happening
once in fifteen times. The error and stack trace of the error log is
given below.
Error: 1) keystoneauth1.exceptions.connection.ConnectFailure: Unable to
establish connection to
http://Controller-VIP:8004/v1/ca1d10786fdc41698e276a8f22d98741/stacks
2) ConnectionRefused: Unable to establish connection to
http://Controller-VIP:9696/v2.0/ports.json?tenant_id=ca1d10786fdc41698e276a8f22d98741&device_id=183bea96-b0da-42a5-a731-713882598624
Stack trace of the error:
NFO (connectionpool) Starting new HTTP connection (1): Controller-VIP
Traceback (most recent call last):
File "/usr/bin/heat", line 10, in <module>
sys.exit(main())
File "/usr/lib/python2.7/dist-packages/heatclient/shell.py", line 706, in
main
HeatShell().main(args)
File "/usr/lib/python2.7/dist-packages/heatclient/shell.py", line 656, in
main
args.func(client, args)
File "/usr/lib/python2.7/dist-packages/heatclient/v1/shell.py", line 137,
in do_stack_create
hc.stacks.create(**fields)
File "/usr/lib/python2.7/dist-packages/heatclient/v1/stacks.py", line 134,
in create
data=kwargs, headers=headers)
File "/usr/lib/python2.7/dist-packages/heatclient/common/http.py", line
266, in json_request
resp = self._http_request(url, method, **kwargs)
File "/usr/lib/python2.7/dist-packages/heatclient/common/http.py", line
358, in _http_request
raise_exc=False, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/keystoneclient/utils.py", line
337, in inner
return func(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/keystoneclient/session.py",
line 390, in request
resp = send(**kwargs)
File "/usr/local/lib/python2.7/dist-packages/keystoneclient/session.py",
line 434, in _send_request
raise exceptions.ConnectionRefused(msg)
keystoneauth1.exceptions.connection.ConnectFailure: Unable to establish
connection to
http://Controller-VIP:8004/v1/ca1d10786fdc41698e276a8f22d98741/stacks
I think we should retry the API connection from keystone client
whenever there is a failure of connection to API. When I added code to
retry it is working fine. In the existing code Keystoneclient is
trying only one time and returning an error if it is not able to
connect to any other service API.
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