1.概述
Ceilometer是OpenStack中的一个子项目，它像一个漏斗一样，能把OpenStack内部发生的几乎所有的事件都收集起来，然后为计费和监控以及其它服务提供数据支撑。Ceilometer的核心架构图如下：
图1 Ceilometer的核心架构图
图2 Ceilometer架构模型
2.安装
2.1安装服务
apt-get install ceilometer-api
ceilometer-collector ceilometer-agent-central python-ceilometerclient
2.2配置
/etc/ceilometer/ceilometer.conf
[DEFAULT]
#rabbitMQ
rabbit_host = client
rabbit_password = 12345
rabbit_hosts = client:5672
rabbit_userid = guest
[database]
connection = mysql://ceilometer:12345@client/ceilometer
[publisher_rpc]
metering_secret = ADMIN
[keystone_authtoken]
auth_host = client
auth_port = 35357
auth_protocol = http
admin_tenant_name = service
admin_user = ceilometer
admin_password = ceilometers
2.3在keystone中创建ceilometer用户和服务endpoint
keystone user-create –name=ceilometer
–pass=CEILOMETER_PASS –email=ceilometer@example.com
keystone user-role-add –user=ceilometer
–tenant=service –role=admin
keystone service-create –name=ceilometer
–type=metering –description=”Ceilometer Telemetry Service”
keystone endpoint-create
–service-id=the_service_id_above
–publicurl=http://controller:8777/
–internalurl=http://controller:8777/
–adminurl=http://controller:8777/
2.4创建ceilometer的mysql数据表
ceilometer-dbsync
2.5重启服务
service ceilometer-agent-central restart
service ceilometer-api restart
service ceilometer-collector restart
3.API
3.1 Resources资源
获取资源的信息。
GET http://HOST:8777/v2/resources
列出所有资源的定义。
GET http://HOST:8777/v2/resources/{resource_id}
获取指定的资源的详细信息。
3.2 Meters计量
获取计量信息。
GET http://HOST:8777/v2/meters
到目前为止的计量数据列表。
GET http://HOST:8777/v2/meters/{meter_id}
获取指定ID的计量信息。
POST http://HOST:8777/v2/meters/{meter_id}
更新指定ID的计量信息列表。
GET http://HOST:8777/v2/meters/{meter_id}/statistics
计算在指定的时间范围内的样本的统计信息。
3.3 Alarms告警
列表，创建，获取详细信息，更新和删除报警。
GET http://HOST:8777/v2/alarms
根据指定查询，列出了警报。
POST http://HOST:8777/v2/alarms
创建一个报警。
GET http://HOST:8777/v2/alarms/{alarm_id}
获取指定ID的报警信息。
PUT http://HOST:8777/v2/alarms/{alarm_id}
更新指定ID的报警。
PUT http://HOST:8777/v2/alarms/{alarm_id}/state
设置一个指定ID的报警状态。
GET http://HOST:8777/v2/alarms/{alarm_id}/state
获取指定ID的报警状态。
GET http://HOST:8777/v2/alarms/{alarm_id}/history
组装指定ID的报警历史记录。
4.OpenStack服务的监控
4.1Compute (Nova)
所有计量来自实例，不宿主机.
| 名称 |
类型 |
单位 |
资源 |
Origin |
说明 |
| instance |
Gauge |
instance |
inst ID |
both |
Duration of instance |
| instance:<type> |
Gauge |
instance |
inst ID |
both |
Duration of instance <type>
(openstack types) |
| memory |
Gauge |
MB |
inst ID |
notification |
Volume of RAM in MB |
| cpu |
Cumulative |
ns |
inst ID |
pollster |
CPU time used |
| cpu_util |
Gauge |
% |
inst ID |
pollster |
Average CPU utilisation |
| vcpus |
Gauge |
vcpu |
inst ID |
notification |
Number of VCPUs |
| disk.read.requests |
Cumulative |
request |
inst ID |
pollster |
Number of read requests |
| disk.write.requests |
Cumulative |
request |
inst ID |
pollster |
Number of write requests |
| disk.read.bytes |
Cumulative |
B |
inst ID |
pollster |
Volume of read in B |
| disk.write.bytes |
Cumulative |
B |
inst ID |
pollster |
Volume of write in B |
| disk.root.size |
Gauge |
GB |
inst ID |
notification |
Size of root disk in GB |
| disk.ephemeral.size |
Gauge |
GB |
inst ID |
notification |
Size of ephemeral disk in GB |
| network.incoming.bytes |
Cumulative |
B |
iface ID |
pollster |
number of incoming bytes on the network
for a VM interface |
| network.outgoing.bytes |
Cumulative |
B |
iface ID |
pollster |
number of outgoing bytes on the network
for a VM interface |
| network.incoming.packets |
Cumulative |
packet |
iface ID |
pollster |
number of incoming packets for a VM
interface |
| network.outgoing.packets |
Cumulative |
packet |
iface ID |
pollster |
number of outgoing packets for a VM
interface |
At present, most of the Nova meters will
only work with libvirt front-end hypervisors while test coverage was mostly
done based on KVM. Contributors are welcome to implement other virtualization
backends’ meters or complete the existing ones.
4.2 Network (Neutron)
| 名称 |
类型 |
单位 |
资源 |
Origin |
说明 |
| network |
Gauge |
network |
netw ID |
notification |
Duration of network |
| network.create |
Delta |
network |
netw ID |
notification |
Creation requests for this network |
| network.update |
Delta |
network |
netw ID |
notification |
Update requests for this network |
| subnet |
Gauge |
subnet |
subnt ID |
notification |
Duration of subnet |
| subnet.create |
Delta |
subnet |
subnt ID |
notification |
Creation requests for this subnet |
| subnet.update |
Delta |
subnet |
subnt ID |
notification |
Update requests for this subnet |
| port |
Gauge |
port |
port ID |
notification |
Duration of port |
| port.create |
Delta |
port |
port ID |
notification |
Creation requests for this port |
| port.update |
Delta |
port |
port ID |
notification |
Update requests for this port |
| router |
Gauge |
router |
rtr ID |
notification |
Duration of router |
| router.create |
Delta |
router |
rtr ID |
notification |
Creation requests for this router |
| router.update |
Delta |
router |
rtr ID |
notification |
Update requests for this router |
| ip.floating |
Gauge |
ip |
ip ID |
both |
Duration of floating ip |
| ip.floating.create |
Delta |
ip |
ip ID |
notification |
Creation requests for this floating ip |
| ip.floating.update |
Delta |
ip |
ip ID |
notification |
Update requests for this floating ip |
4.3Image (Glance)
| 名称 |
类型 |
单位 |
资源 |
Origin |
说明 |
| image |
Gauge |
image |
image ID |
both |
Image polling -> it (still) exists |
| image.size |
Gauge |
B |
image ID |
both |
Uploaded image size |
| image.update |
Delta |
image |
image ID |
notification |
Number of update on the image |
| image.upload |
Delta |
image |
image ID |
notification |
Number of upload of the image |
| image.delete |
Delta |
image |
image ID |
notification |
Number of delete on the image |
| image.download |
Delta |
B |
image ID |
notification |
Image is downloaded |
| image.serve |
Delta |
B |
image ID |
notification |
Image is served out |
4.4Volume (Cinder)
| 名称 |
类型 |
单位 |
资源 |
Origin |
说明 |
| volume |
Gauge |
volume |
vol ID |
notification |
Duration of volume |
| volume.size |
Gauge |
GB |
vol ID |
notification |
Size of volume |
4.5Object Storage (Swift)
| 名称 |
类型 |
单位 |
资源 |
Origin |
说明 |
| storage.objects |
Gauge |
object |
store ID |
pollster |
Number of objects |
| storage.objects.size |
Gauge |
B |
store ID |
pollster |
Total size of stored objects |
| storage.objects.containers |
Gauge |
container |
store ID |
pollster |
Number of containers |
| storage.objects.incoming.bytes |
Delta |
B |
store ID |
notification |
Number of incoming bytes |
| storage.objects.outgoing.bytes |
Delta |
B |
store ID |
notification |
Number of outgoing bytes |
| storage.api.request |
Delta |
request |
store ID |
notification |
Number of API requests against swift |
| storage.containers.objects |
Gauge |
object |
str ID/cont |
pollster |
Number of objects in container |
| storage.containers.objects.size |
Gauge |
B |
str ID/cont |
pollster |
Total size of stored objects in container |
4.6Energy (Kwapi)
| 名称 |
类型 |
单位 |
资源 |
Origin |
说明 |
| energy |
Cumulative |
kWh |
probe ID |
pollster |
Amount of energy |
| power |
Gauge |
W |
probe ID |
pollster |
Power consumption |
