解决　neutron client uri请求过长碰到的问题

作者：简简单单 2015-02-08

问题：

运维同事使用管理员执行neutron security-group-rule-list查询安全组规则时，由于安全组规则过多，而我们的neutron-client代码版本比较旧，出现了414的错误。

解决过程：

查看社区新的代码，bug已经修复。

Fix listing security group rules

此patch在查询安全组规则的时候，如果发现uri大于8192字节，则分割成多个http请求。

backport回来之后，继续执行命令，neutron-server返回400错误

ERROR: neutronclient.shell

400 Bad request

Your browser sent an invalid request.

Traceback (most recent call last):
File "/usr/lib/python2.6/site-packages/neutronclient/shell.py", line 554, in run_subcommand
    return run_command(cmd, cmd_parser, sub_argv)
File "/usr/lib/python2.6/site-packages/neutronclient/shell.py", line 83, in run_command
    return cmd.run(known_args)
File "/usr/lib/python2.6/site-packages/neutronclient/common/command.py", line 34, in run
    return super(OpenStackCommand, self).run(parsed_args)
File "/usr/lib/python2.6/site-packages/cliff/display.py", line 84, in run
    column_names, data = self.take_action(parsed_args)
File "/usr/lib/python2.6/site-packages/neutronclient/common/command.py", line 40, in take_action
    return self.get_data(parsed_args)
File "/usr/lib/python2.6/site-packages/neutronclient/neutron/v2_0/__init__.py", line 615, in get_data
    self.extend_list(data, parsed_args)
File "/usr/lib/python2.6/site-packages/neutronclient/neutron/v2_0/securitygroup.py", line 171, in extend_list
    _get_sec_group_list(sec_group_ids[i: i + chunk_size]))
File "/usr/lib/python2.6/site-packages/neutronclient/neutron/v2_0/securitygroup.py", line 153, in _get_sec_group_list
    **search_opts).get('security_groups', [])
File "/usr/lib/python2.6/site-packages/neutronclient/v2_0/client.py", line 101, in with_params
    ret = self.function(instance, *args, **kwargs)
File "/usr/lib/python2.6/site-packages/neutronclient/v2_0/client.py", line 476, in list_security_groups
    retrieve_all, **_params)
File "/usr/lib/python2.6/site-packages/neutronclient/v2_0/client.py", line 1330, in list
    for r in self._pagination(collection, path, **params):
File "/usr/lib/python2.6/site-packages/neutronclient/v2_0/client.py", line 1343, in _pagination
    res = self.get(path, params=params)
File "/usr/lib/python2.6/site-packages/neutronclient/v2_0/client.py", line 1316, in get
    headers=headers, params=params)
File "/usr/lib/python2.6/site-packages/neutronclient/v2_0/client.py", line 1301, in retry_request
    headers=headers, params=params)
File "/usr/lib/python2.6/site-packages/neutronclient/v2_0/client.py", line 1244, in do_request
    self._handle_fault_response(status_code, replybody)
File "/usr/lib/python2.6/site-packages/neutronclient/v2_0/client.py", line 1211, in _handle_fault_response
    exception_handler_v20(status_code, des_error_body)
File "/usr/lib/python2.6/site-packages/neutronclient/v2_0/client.py", line 81, in exception_handler_v20
    message=message)
NeutronClientException: