Openstack 性能测试之 Rally
What is Rally
Rally 集成了部署、API测试、压力测试功能(如下图)，但我们一般用 devstack 部署，tempest 做 API 测试，因此 Rally 常用于模拟高并发场景的压力测试。Rally 测试 openstack 在并发下 API 的相应时间和请求成功率，从而测试出 openstack 集群的性能。
Deploy Rally
$ git clone https://git.openstack.org/stackforge/rally
$ ./rally/install_rally.sh -v
Configure Rally
$ source /opt/rally/bin/activate
初始化 Rally，把所需测试 openstack 集群的 keystone url，用户租户信息写入到 existing.json 中
$ rally deployment create --filename=existing.json --name=openstack
查看集群的 service
$ rally deployment check
keystone endpoints are valid and following services are available:
+------------+----------------+-----------+
| services | type | status |
+------------+----------------+-----------+
| ceilometer | metering | Available |
| cinder | volume | Available |
| cinderv2 | volumev2 | Available |
| ec2 | ec2 | Available |
| glance | image | Available |
| heat | cloudformation | Available |
| heat | orchestration | Available |
| keystone | identity | Available |
| neutron | network | Available |
| nova | compute | Available |
| novav3 | computev3 | Available |
| s3 | s3 | Available |
| trove | database | Available |
+------------+----------------+-----------+
Benchmark Openstack Peformance
在 rally/doc/samples/tasks/scenarios/ 里头包含各个组件的配置文件，直接使用即可，举例：
测试 keystone 创建-删除用户性能
$ rally -v task start rally/doc/samples/tasks/scenarios/keystone/create-and-delete-user.json
+--------------------------+-----------+-----------+-----------+---------------+---------------+---------+-------+
| action | min (sec) | avg (sec) | max (sec) | 90 percentile | 95 percentile | success | count |
+--------------------------+-----------+-----------+-----------+---------------+---------------+---------+-------+
| keystone.create_user | 0.653 | 2.117 | 4.912 | 2.921 | 3.259 | 100.0% | 100 |
| keystone.delete_resource | 0.112 | 0.534 | 1.684 | 0.934 | 1.119 | 100.0% | 100 |
| total | 1.461 | 2.651 | 5.351 | 3.512 | 3.924 | 100.0% | 100 |
+--------------------------+-----------+-----------+-----------+---------------+---------------+---------+-------+
测试 nova 创建-删除虚拟机性能
$ rally -v task start rally/doc/samples/tasks/scenarios/nova/boot-and-delete.json
+--------------------+-----------+-----------+-----------+---------------+---------------+---------+-------+
| action | min (sec) | avg (sec) | max (sec) | 90 percentile | 95 percentile | success | count |
+--------------------+-----------+-----------+-----------+---------------+---------------+---------+-------+
| nova.boot_server | 2.594 | 2.686 | 2.772 | 2.736 | 2.754 | 100.0% | 10 |
| nova.delete_server | 2.227 | 2.293 | 2.459 | 2.355 | 2.407 | 100.0% | 10 |
| total | 4.861 | 4.981 | 5.113 | 5.081 | 5.096 | 100.0% | 10 |
+--------------------+-----------+-----------+-----------+---------------+---------------+---------+-------+