Provision nodes with Ironic+Mistral/Ansible without Nova
Making TripleO workflows use Ironic directly to provision nodes has quite a few benefits:
1. First and foremost, getting rid of the horrible "no valid hosts found" exception. The scheduling will be much simpler and the errors will be clearer.
2. Also important for the generic provisioner case, we'll be able to get rid of Nova and Glance, reducing the memory footprint.
3. We'll get rid of pre-deploy validations that currently try to get what nova scheduler will expect.
4. We'll become on charge of building the configdrive, potentially putting more useful things there.
5. In the future we'll be able to integrate things like building RAID on demand much easier.
6. Also in the future we might want to use introspection data in scheduling and provisioning decisions. Particularly, we can automate handling root device hints.
7. We'll probably have easier time combining ironic with pre-deployed services or virtual solutions (e.g. putting controllers on oVirt, which is currently done via an unsupported ironic-
8. Hopefully, scale-up will be less error-prone.
The way I see it implemented is probably similar to the config-download work (and based on it). We can have a Heat flag to not provision instances, essentially stop after creating ports and creating ansible input. Then a mistral workflow will pick the required number of nodes, prepare them and provision. Then the usual config-download will proceed.
A library is being prepared to host the reusable code for provisioning: https:/
Blueprint information
- Status:
- Complete
- Approver:
- Emilien Macchi
- Priority:
- Medium
- Drafter:
- Dmitry Tantsur
- Direction:
- Approved
- Assignee:
- Steve Baker
- Definition:
- Approved
- Series goal:
- Accepted for ussuri
- Implementation:
-
Implemented
- Milestone target:
-
ussuri-rc1
- Started by
- Dmitry Tantsur
- Completed by
- Steve Baker
Related branches
Related bugs
Sprints
Whiteboard
[2019-09-18] (aschultz): Not implemented by the end of Train, moving out to Ussuri
Gerrit topic: https:/
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Support provisioning bare metals without Nova
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Add ServerDeletionP
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Add RoleNetPortIdMap output
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Add RoleCtlplanePortMap output
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[WIP] Bare metal provisioning without Nova and Glance
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nova-
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nova-
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[WIP] nova-less-deploy: implement deploy_roles workflow
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nova-
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Switch off nova metadata api on the undercloud
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Revert "Switch off nova metadata api on the undercloud"
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Revert "Revert "Switch off nova metadata api on the undercloud""
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Configure nova_compute for vendordata
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[WIP] nova-less-deploy: stop using glance for ironic-python-agent images
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Rework create_
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Define var undercloud_
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Write out overcloud_
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DNM: undercloud_
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Env file to disable undercloud nova
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Add undercloud.conf enable_nova option
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DNM Set enable_nova in undercloud.conf
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Define variable baremetal_provision
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DNM: Set baremetal_
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Filter the rendered DeployedServerP
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Improve yaml output of "openstack overcloud node provision"
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Drop EC2MetadataIp parameter and its uses
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Make instances name/hostname optional
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WIP Add --baremetal-
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DNM proposed change to baremetal provision format
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Break out hostname format logic into functions
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Allow mixing of count and instances
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nova-
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Add provisioned attribute to instances
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WIP add an undeploy_nodes workflow
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WIP new command "openstack overcloud node unprovision"
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WIP New command "overcloud node extract provisioned"
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Remove glance and nova custom constraints
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Sync deployed-
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Remove disable_constraints
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DNM never delete a nova server
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Move enable_nova after enable_ironic
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Also disable undercloud glance with nova
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Don't mount /etc/nova into placement migrate script
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Configure nova_compute for vendordata
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Configure nova_compute for vendordata
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DNM: baremetal_
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Add missing allocations for active nodes
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Revert "Fixes for deploying nova-less undercloud"
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Revert "Revert "Fixes for deploying nova-less undercloud""
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Run RDO jobs with baremetal provisioning
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Run multinode and undercloud jobs nova-less
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Ignore failure calling cell_v2_
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mistral-
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Create an endpoint entry for novajoin
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Override policy for undercloud novajoin
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Build config-drive with novajoin metadata
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WIP prompt for nodes which will be unprovisioned
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Complete overcloud deploy --baremetal-
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Document baremetal provisioning
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Clean up instance defaults setting
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Set ServerDeletionP
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Refactor image upload command
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WIP local file based image uploader
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WIP bm provisioning with overcloud node delete
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Update docs for node delete with baremetal provisioning
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Don't subclass NovajoinConfig
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openstack overcloud node delete --baremetal-
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Clean up instance defaults setting
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Improvements to unprovision command
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Complete overcloud deploy --baremetal-
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Set ServerDeletionP
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Refactor image upload command
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Local file based image uploader
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Auto-detect default overcloud-full image
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DNM switch off nova/glance in featureset001
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Exit overcloud-deploy.sh on provision failure
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Return None image client when no glance endpoint
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Only do nova cell discovery when nova endpoint exists
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Reduce overhead of stack show loop
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New command "overcloud node extract provisioned"
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Add role tripleo_
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Module tripleo_
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WIP undercloud upgrade steps to switch off nova and glance
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Fall back to local upload when there is no glance endpoint
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