neutron-server Connection pool is full, discarding connection 连接池过满

参考链接：https://zhiliao.h3c.com/Theme/details/48291

问题：

-- ::33.235  WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: 10.95.134.176
-- ::36.470  WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: 10.95.134.176
-- ::46.237  WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: 10.95.134.176
-- ::48.002  WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: 10.95.134.176
-- ::48.334  WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: 10.95.134.176
-- ::50.551  WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: 10.95.134.176
-- ::57.655  WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: 10.95.134.176
-- ::59.032  WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: 10.95.134.176
-- ::59.420  WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: 10.95.134.176
-- ::02.280  WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: 10.95.134.176
-- ::03.644  WARNING requests.packages.urllib3.connectionpool [-] Connection pool is full, discarding connection: 10.95.134.176

解决方法：

经确认compute容器下默认的连接池参数“DEFAULT_POOLSIZE”是10，可以修改为1000。该参数需要固化。

配置文件的路径为：/usr/lib/python2.7/site-packages/requests/adapters.py

from .exceptions import (ConnectionError, ConnectTimeout, ReadTimeout, SSLError,
                         ProxyError, RetryError)
from .auth import _basic_auth_str

DEFAULT_POOLBLOCK = False
DEFAULT_POOLSIZE =
DEFAULT_RETRIES = 

class BaseAdapter(object):