Ceilometer 监控网络流量
Ceilometer 网络流量采集两种方式
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Ceilometer 网络流量监控默认是通过Compute 的libvirt进行监控，记录网卡进入与出去流量统计，针对某个虚拟机的网卡，该方式记录所有网卡通过的流量统计。
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网络bandwidth的采集是通过neutron-metering-agent 代理方式进行流量采集，然后push到oslo-messaging, ceilometer-agent-notification 通过监听消息队列来收取bandwidth信息。
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同一子网下虚拟机互相访问不会统计，但不同子网间进过虚拟路由器的流量会被统计，虚拟机与外部网络互访也会统计（有floatingip)
Bandwidth 采集配置
- 安装neutron-metering-agent
# yum install openstack-neutron-metering-agent
- 修改配置文件/etc/neutron/neutron.conf
service_plugins =neutron.services.l3_router.l3_router_plugin.L3RouterPlugin,neutron.services.metering.metering_plugin.MeteringPlugin
notification_driver=neutron.openstack.common.notifier.rpc_notifier (消息发布）
- 修改neutron-metering-agent.ini文件
[DEFAULT]
# Show debugging output in log (sets DEBUG log level output)
debug = True
# Default driver:
# driver = neutron.services.metering.drivers.noop.noop_driver.NoopMeteringDriver
# Example of non-default driver
driver = neutron.services.metering.drivers.iptables.iptables_driver.IptablesMeteringDriver
# Interval between two metering measures
measure_interval = 30
# Interval between two metering reports
report_interval = 300
# interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
use_namespaces = True
#interface_driver = neutron.agent.linux.interface.BridgeInterfaceDriver
重启neutron-service服务与neutrong-metering-agent服务
systemctl restart neutron-server.service
systemctl restart neutron-metering-agent.service
如果neutron-metering-agent 为新安装，需要加入开机自动启动，systemctl enable neutron-metering-agent.service
neutron agent-list (查看代理是否已经运行)
配置Neutron-metering 采集信息
Create some metering labels for traffic passing through routers external interface
The following will meter all traffic going through routers’ external interfaces:
neutron meter-label-create public-in
neutron meter-label-rule-create public-in 0.0.0.0/0 --direction ingress
neutron meter-label-create public-out
neutron meter-label-rule-create public-out 0.0.0.0/0 --direction egress
查看iptables 上的规则链
iptables -L -vnx
ip netns exec qrouter-d31150a1-e519-46e5-a5bc-a5ab94c1dab1 iptables -t filter -L neutron-meter-l-5814b182-67a -v -n -x (查看流量统计情况,qrouter 与neutron-meter-l可以通过在/var/log/neutron/metering-agent.log中查看到
查看统计信息
ceilometer meter-list （会出现bandwidth采集名称)
ceilometer sample-list -m bandwidth （查询bandwidth采样信息）
ceilometer statistics -m bandwidth --period 60 -q "resource_id= xxxxxxxx" （查看统计信息）