neutron routers HA 实验

测试环境：

5个节点(( controller,2  network,2 compute nodes))

采用VXLAN+Linux Bridge

1. 确定所有的neutron和nova服务都在运行

Nova service-list

Neutron agent-list

2. 创建2个networks

a)  neutron net-create private
neutron subnet-create –name private-subnet private 10.0.0.0/
 
b)  neutron net-create private1
neutron subnet-create –name private1-subnet private1 10.0.1.0/

3. 创建一个共享的public网络连接到物理网络physnet1

Neutron net-create –shared public –router:external=True –provide:network_type flat –provider:physical_network physnet1
 
Neutron subnet-create –name public-subnet public –allocation-pool start 172.16.0.33,end-172.16.0.66 –gateway=172.16.0.5 –enable-dhcp=False 172.16.0.0/

4. 创建一个router，–distributed为 False， –ha 为True

Neutron router-create MyRouter –distributed False –ha True

5. 把private和private1加入到MyRouter，并设置router的网关到public网络

Neutron router-interface-add MyRouter private-subnet
 
Neutron router-interface-add MyRouter private1-subnet
 
Neutron router-gateway-set MyRouter public

6. 查看各种节点上的namespace

7. Open ICMP 和port 22 in security group

Neutron security-group-rule-create –protocol icmp –direction ingress default
 
Neutron security-group-rule-create –protocol tcp –port-range-min  –port-range-max  –direction ingress default

8. 启动VMs

nova boot –image cirros-qcow2 –flavor  –nic net-id=<private net is> private one
 
nova boot –image cirros-qcow2 –flavor  –nic net-id=<private net is> private two
 
nova boot –image cirros-qcow2 –flavor  –nic net-id=<private1 net is> private1 three
 
nova boot –image cirros-qcow2 –flavor  –nic net-id=<private1 net is> private1 four

9. Neutron port-list

10. Add floating IP

网络节点上：

Neutron floatingip-create –port-id=<port ID>

11. Neutron net-list

注意：HA network已经自动创建了。如何创建的

12. Keepalived用来监控每个HA router，VIP会随着master failes而移动

Ssh networknode
 
Less /var/lib/neutron/ha_confs/router_UUDI/keepalived.conf
 
Less /var/lib/neutron/ha_confs/router_UUDI/state

13. 看看qrouter
namespace中VIP在那个node上

Networknode1$ Ip netns exec qrouter-id ip a
 
Networknode2$ Ip netns exec qrouter-id ip a

14. Down 所有active router上的interfaces,VIP移动到了另外的node上了。（router不能直接down掉？）

Ip netns exec qgouter-id  ip link set dev qg-id down
 
Ip netns exec qrouter-id  ip link set dev qg-id down
 
Ip netns exec ha-id  ip link set dev qg-id down

15. Up 刚才down了接口，VIP没有移动

注意：由于bug1365476, HA routers在L2 pop的情况下不工作。（VXLAN不works）