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![Open localrc under devstack folder and type in
below content..
MULTI_HOST=True
enable_service n-cell n-api-meta
disable_service n-cpu
…
Open /etc/nova/nova.conf and type in below
content..
[cells]
enable=True
name=parent
cell_type=api
On Parent..
Run ./stack.sh
Restart n-api and n-cell services](https://image.slidesharecdn.com/8devstackbeyondhello-world-130922201347-phpapp01/85/8-devstack-beyond_hello-world-18-320.jpg)
![On Child..
Open localrc under devstack folder and type in below
content..
MULTI_HOST=True
enable_service n-cell
disable_service n-api
Run ./stack.sh
Open /etc/nova/nova.conf and type in below
content..
[DEFAULT]
quota_driver=nova.quota.NoopQuotaDriver
glance_api_server = <glance server running in parent>
[cells]
enable=True
name=child
cell_type=compute
Restart n-cpu, n-sch and n-cell services](https://image.slidesharecdn.com/8devstackbeyondhello-world-130922201347-phpapp01/85/8-devstack-beyond_hello-world-19-320.jpg)
![Open localrc under devstack folder and type in
below content..
MULTI_HOST=True
enable_service n-cell n-api-meta
disable_service n-cpu
…
Open /etc/nova/nova.conf and type in below
content..
[cells]
enable=True
name=parent
cell_type=api
On Parent..
Run ./stack.sh
Restart n-api and n-cell services](https://image.slidesharecdn.com/8devstackbeyondhello-world-130922201347-phpapp01/75/8-devstack-beyond_hello-world-18-2048.jpg)
![On Child..
Open localrc under devstack folder and type in below
content..
MULTI_HOST=True
enable_service n-cell
disable_service n-api
Run ./stack.sh
Open /etc/nova/nova.conf and type in below
content..
[DEFAULT]
quota_driver=nova.quota.NoopQuotaDriver
glance_api_server = <glance server running in parent>
[cells]
enable=True
name=child
cell_type=compute
Restart n-cpu, n-sch and n-cell services](https://image.slidesharecdn.com/8devstackbeyondhello-world-130922201347-phpapp01/75/8-devstack-beyond_hello-world-19-2048.jpg)
Uploaded byopenstackindia
8 devstack beyond_hello-world
Devstack is an OpenStack development environment that allows for single node and multi-node setups. It uses a cell architecture with parent and child cells where the parent cell acts as the API node and child cells handle compute functions. The document demonstrates configuring a parent-child cell environment using Devstack by setting configuration options in localrc and nova.conf files on the parent and child nodes and registering the cells with each other using nova-manage commands.
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8 devstack beyond_hello-world
- 1.
- 2. Agenda What is Devstack? Singleand multi node architecture Cell architecture Quick demo of cell setup
- 3. Run it Test it Mimica deploy Why Devstack?
- 4.
- 5. Compute Other componentsNova API APIrequest Compute Compute` Compute Compute Single node setup Multi-node setup
- 6. A peek intostack.sh ADMIN_PASSWORD=password MYSQL_PASSWORD=stackdb RABBIT_PASSWORD=stackqueue SERVICE_PASSWORD=$ADMIN_PASSWORD HOST_IP=w.x.y.z ... localrc – set overrides Database type Enabled services=g-api,n-api,... (Service repos) NOVA_REPO=<nova git repo> NOVA_BRANCH=<nova branch> … stackrc – primary config file
- 7. HOST_IP = <computenode IP> MULTI_HOST=1 SERVICE_HOST=<controller IP> MYSQL_HOST=<controller IP> RABBIT_HOST=<controller IP> ENABLED_SERVICES=n-cpu, n-net, c-sch, c-api, c-vol On the compute node: localrc settings HOST_IP = <controller IP> MULTI_HOST=1 ENABLED_SERVICES=n-net, n-api, c-sch, c-api, c-vol On the controller node:
- 8.
- 9.
- 10.
- 11.
- 12.
- 13.
- 14. So, how wedo we configure these cells in devstack?
- 15. Let’s try toconfigure a cell environment with one parent and one child
- 16. We used twoVMs with Ubuntu 12.04 LTS installed as parent and child for this demo
- 17. Clone https://github.com/matiu2/devstack onboth parent and child and checkout “cell_support” branch
- 18. Open localrc underdevstack folder and type in below content.. MULTI_HOST=True enable_service n-cell n-api-meta disable_service n-cpu … Open /etc/nova/nova.conf and type in below content.. [cells] enable=True name=parent cell_type=api On Parent.. Run ./stack.sh Restart n-api and n-cell services
- 19. On Child.. Open localrcunder devstack folder and type in below content.. MULTI_HOST=True enable_service n-cell disable_service n-api Run ./stack.sh Open /etc/nova/nova.conf and type in below content.. [DEFAULT] quota_driver=nova.quota.NoopQuotaDriver glance_api_server = <glance server running in parent> [cells] enable=True name=child cell_type=compute Restart n-cpu, n-sch and n-cell services
- 20. Now we aredone configuring both parent and child…
- 21. How do theparent and the child know about each other now?
- 22. On parent, wewill run the command: nova-manage cell create --name=child --cell_type=compute -- username=guest --password=password --hostname=<child ip> -- port=5672 --virtual_host=/ --woffset=1.0 --wscale=1.0
- 23. On the child,we will run the command: nova-manage cell create –name=parent --cell_type=api -- username=guest --password=password --hostname=<parent ip> -- port=5672 --virtual_host=/ --woffset=1.0 --wscale=1.0
- 24. Let’s try tobuild an instance in this cell environment…
- 26.
- 27. So far, wehave seen… Brief introduction to devstack Single and multi-node environment Cells A demo in a cell environment Questions?