neutron 创建安全组会有两条默认的出口规则

Direction	Ether Type	IP Protocol	Port Range	Remote IP Prefix	Remote Security Group	Actions
	Egress	IPv6	Any	Any	::/0	-	Delete Rule
	Egress	IPv4	Any	Any	0.0.0.0/0	-

遇到的需求要修改它，

找了数据库，配置文件后，在源代码中找到了他

位置 neutron/db/securitygroups_db.py

  def create_security_group(self, context, security_group, default_sg=False):

 for ethertype in ext_sg.sg_supported_ethertypes:

    if default_sg:

    # Allow intercommunication

      ingress_rule = sg_models.SecurityGroupRule(

      id=uuidutils.generate_uuid(), tenant_id=tenant_id,

      security_group=security_group_db,

      direction='ingress',

      ethertype=ethertype,

      source_group=security_group_db)

      context.session.add(ingress_rule)

修改这段内容，完成目的。 

本文转自 superbigsea 51CTO博客，原文链接:http://blog.51cto.com/superbigsea/1860311