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OpenStack Mitaka : How to use Ceilometer
2016/05/12
 
How to use the OpenStack Metering Service (Ceilometer).
This example is based on the environment like follows.
                                |
+------------------+            |            +------------------------+
| [ Control Node ] |            |            |    [ Network Node ]    |
|     Keystone     |10.0.0.30   |   10.0.0.50|    DHCP,L3,L2 Agent    |
|      Glance      |------------+------------|     Metadata Agent     |
|     Nova API     |eth0        |        eth0|   Ceilometer Services  |
|  Neutron Server  |            |            |                        |
+------------------+            |            +------------------------+
                            eth0|10.0.0.51
                      +--------------------+
                      |  [ Compute Node ]  |
                      |    Nova Compute    |
                      |      L2 Agent      |
                      | Ceilometer-Compute |
                      +--------------------+

[1] If you configured Ceilometer#1 section, Ceilometer#2 section, Ceilometer#3 section, the command below shows some results without errors like follows.
[root@dlp ~(keystone)]#
ceilometer meter-list

+-------------------+------------+----------+------------------------+---------------------+-------------------+
| Name              | Type       | Unit     | Resource ID            | User ID             | Project ID        |
+-------------------+------------+----------+------------------------+---------------------+-------------------+
| cpu               | cumulative | ns       | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| image             | gauge      | image    | 2aab2d1a-e1e8-45c9-... | None            ... | 98ea1b896d3a48... |
| image.size        | gauge      | B        | 2aab2d1a-e1e8-45c9-... | None            ... | 98ea1b896d3a48... |
| instance          | gauge      | instance | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| instance:m1.small | gauge      | instance | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
+-------------------+------------+----------+------------------------+---------------------+-------------------+
[2] It's possible to monitor Compute Service (Nova) now. Try to create and start an instance, and next, input the command meter-list again, then meters are loged like follows.
[root@dlp ~(keystone)]#
neutron net-list

+--------------------------------------+---------+-------------------------------------------------------+
| id                                   | name    | subnets                                               |
+--------------------------------------+---------+-------------------------------------------------------+
| 550b379c-90f6-4cff-8063-88167dc7c568 | ext_net | 702832ef-4de5-41ba-9c2c-de2450d15ab0 10.0.0.0/24      |
| a8705bd3-c2de-4526-aa7c-2c4605a6edf4 | int_net | f29ee9fd-7bae-40d8-8d4c-a1340092f258 192.168.100.0/24 |
+--------------------------------------+---------+-------------------------------------------------------+

[root@dlp ~(keystone)]#
Int_Net_ID=`neutron net-list | grep int_net | awk '{ print $2 }'`

[root@dlp ~(keystone)]#
nova boot --flavor 2 --image CentOS7 --security-groups default --nic net-id=$Int_Net_ID CentOS_7

[root@dlp ~(keystone)]#
ceilometer meter-list

+---------------------+------------+----------+------------------------+---------------------+-------------------+
| Name                | Type       | Unit     | Resource ID            | User ID             | Project ID        |
+---------------------+------------+----------+------------------------+---------------------+-------------------+
| cpu                 | cumulative | ns       | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| disk.ephemeral.size | gauge      | GB       | 0fbc0272-285a-4d97-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| disk.ephemeral.size | gauge      | GB       | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| disk.root.size      | gauge      | GB       | 0fbc0272-285a-4d97-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| disk.root.size      | gauge      | GB       | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| image               | gauge      | image    | 2aab2d1a-e1e8-45c9-... | None            ... | 98ea1b896d3a48... |
| image.size          | gauge      | B        | 2aab2d1a-e1e8-45c9-... | None            ... | 98ea1b896d3a48... |
| instance            | gauge      | instance | 0fbc0272-285a-4d97-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| instance            | gauge      | instance | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| instance:m1.small   | gauge      | instance | 0fbc0272-285a-4d97-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| instance:m1.small   | gauge      | instance | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| memory              | gauge      | MB       | 0fbc0272-285a-4d97-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| memory              | gauge      | MB       | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| port                | gauge      | port     | 188e5409-c6f4-4a7a-... | f13070920e5c477e... | 4e84300cbeeb4a... |
| port.create         | delta      | port     | 188e5409-c6f4-4a7a-... | f13070920e5c477e... | 4e84300cbeeb4a... |
| vcpus               | gauge      | vcpu     | 0fbc0272-285a-4d97-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| vcpus               | gauge      | vcpu     | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
+---------------------+------------+----------+------------------------+---------------------+-------------------+
[3] Configure to enable monitoring Image Service (Glance).
[root@dlp ~(keystone)]#
vi /etc/glance/glance-api.conf
# add into [DEFAULT] section

rpc_backend = rabbit
# add to the end

[oslo_messaging_notifications]
driver = messagingv2

[oslo_messaging_rabbit]
rabbit_host = 10.0.0.30
rabbit_port = 5672
rabbit_userid = openstack
rabbit_password = password 

[root@dlp ~(keystone)]#
vi /etc/glance/glance-registry.conf
# add into [DEFAULT] section

rpc_backend = rabbit
# add to the end

[oslo_messaging_notifications]
driver = messagingv2

[oslo_messaging_rabbit]
rabbit_host = 10.0.0.30
rabbit_port = 5672
rabbit_userid = openstack
rabbit_password = password 

[root@dlp ~(keystone)]#
systemctl restart openstack-glance-api openstack-glance-registry

# verify the configuration

[root@dlp ~(keystone)]#
ceilometer meter-list

+-------------------+------------+----------+------------------------+---------------------+-------------------+
| Name              | Type       | Unit     | Resource ID            | User ID             | Project ID        |
+-------------------+------------+----------+------------------------+---------------------+-------------------+
| cpu               | cumulative | ns       | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| cpu_util          | gauge      | %        | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| image             | gauge      | image    | 2aab2d1a-e1e8-45c9-... | None            ... | 98ea1b896d3a48... |
| image.size        | gauge      | B        | 2aab2d1a-e1e8-45c9-... | None            ... | 98ea1b896d3a48... |
| instance          | gauge      | instance | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| instance:m1.small | gauge      | instance | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
+-------------------+------------+----------+------------------------+---------------------+-------------------+

# try to add a new image

[root@dlp ~(keystone)]#
glance image-create --name "CentOS71" --file /var/kvm/images/centos7.img --disk-format qcow2 --container-format bare --visibility public

[root@dlp ~(keystone)]#
ceilometer meter-list

+-------------------+------------+----------+------------------------+---------------------+-------------------+
| Name              | Type       | Unit     | Resource ID            | User ID             | Project ID        |
+-------------------+------------+----------+------------------------+---------------------+-------------------+
| cpu               | cumulative | ns       | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| cpu_util          | gauge      | %        | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| image             | gauge      | image    | 2aab2d1a-e1e8-45c9-... | None            ... | 98ea1b896d3a48... |
| image             | gauge      | image    | 95b05349-e9cb-4e88-... | None            ... | 98ea1b896d3a48... |
| image.size        | gauge      | B        | 2aab2d1a-e1e8-45c9-... | None            ... | 98ea1b896d3a48... |
| image.size        | gauge      | B        | 95b05349-e9cb-4e88-... | None            ... | 98ea1b896d3a48... |
| image.update      | delta      | image    | 95b05349-e9cb-4e88-... | None            ... | 98ea1b896d3a48... |
| image.upload      | delta      | image    | 95b05349-e9cb-4e88-... | None            ... | 98ea1b896d3a48... |
| instance          | gauge      | instance | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
| instance:m1.small | gauge      | instance | 2c7a1025-30d6-446a-... | 704a7f5cf84a4797... | 98ea1b896d3a48... |
+-------------------+------------+----------+------------------------+---------------------+-------------------+
# meters are loged for Image Service

[4] Configure to enable monitoring Block Storage (Cinder).
# add in the [DEFAULT] section

[root@dlp ~(keystone)]#
vi /etc/cinder/cinder.conf
# add to the end

[oslo_messaging_notifications]
driver = messagingv2

# Control Node

[root@dlp ~(keystone)]#
systemctl restart openstack-cinder-api openstack-cinder-scheduler

# Storage Node

[root@network ~]#
systemctl restart openstack-cinder-volume

# verify the configuration

[root@dlp ~(keystone)]#
ceilometer meter-list

+------------+-------+-------+------------------------+---------+----------------------+
| Name       | Type  | Unit  | Resource ID            | User ID | Project ID           |
+------------+-------+-------+------------------------+---------+----------------------+
| image      | gauge | image | 2aab2d1a-e1e8-45c9-... | None    | 98ea1b896d3a48438... |
| image.size | gauge | B     | 2aab2d1a-e1e8-45c9-... | None    | 98ea1b896d3a48438... |
+------------+-------+-------+------------------------+---------+----------------------+
[root@dlp ~(keystone)]#
cinder create --display_name disk01 10

[root@dlp ~(keystone)]#
ceilometer meter-list

+---------------------+-------+--------+------------------------+---------------------+--------------------+
| Name                | Type  | Unit   | Resource ID            | User ID             | Project ID         |
+---------------------+-------+--------+------------------------+---------------------+--------------------+
| image               | gauge | image  | 2aab2d1a-e1e8-45c9-... | None                | 98ea1b896d3a484... |
| image.size          | gauge | B      | 2aab2d1a-e1e8-45c9-... | None                | 98ea1b896d3a484... |
| volume              | gauge | volume | 1dadb51f-9acb-4845-... | 704a7f5cf84a4797... | 98ea1b896d3a484... |
| volume.create.end   | delta | volume | 1dadb51f-9acb-4845-... | 704a7f5cf84a4797... | 98ea1b896d3a484... |
| volume.create.start | delta | volume | 1dadb51f-9acb-4845-... | 704a7f5cf84a4797... | 98ea1b896d3a484... |
| volume.size         | gauge | GB     | 1dadb51f-9acb-4845-... | 704a7f5cf84a4797... | 98ea1b896d3a484... |
+---------------------+-------+--------+------------------------+---------------------+--------------------+
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