Difference between revisions of "Ironic/NovaBaremetalIronicMigration"
< Ironic
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(→Nova Bare-metal to Ironic migration) |
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== Nova Bare-metal to Ironic migration == | == Nova Bare-metal to Ironic migration == | ||
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=== Assumptions / Requirements === | === Assumptions / Requirements === | ||
* Migration is only supported *within* Juno release | * Migration is only supported *within* Juno release | ||
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* Deploy-ironic kernel and ramdisk, uploaded in to glance ( DIB ) | * Deploy-ironic kernel and ramdisk, uploaded in to glance ( DIB ) | ||
* Empty Ironic database exists | * Empty Ironic database exists | ||
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=== High Level Walk Through === | === High Level Walk Through === | ||
* Start maintenance period (to prevent API service access for upgrade) | * Start maintenance period (to prevent API service access for upgrade) | ||
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** '''Add''' an [ironic] section ([[#Ironic_section|Example]]) | ** '''Add''' an [ironic] section ([[#Ironic_section|Example]]) | ||
** '''Remove''' the [baremetal] section ([[#Baremetal_section|Example]]) | ** '''Remove''' the [baremetal] section ([[#Baremetal_section|Example]]) | ||
− | + | * Update flavor metadata to reference Ironic's deploy kernel & ramdisk ([[#Update_flavor|Example]]) | |
− | + | * Run ironic-nova-bm-migrate script to migrate nova-bm nodes and interfaces to ironic nodes and ports | |
− | + | * Start Ironic services ([[#Start_Ironic_services|Example]]) | |
− | + | * Ensure proper start-up | |
− | + | * (Re)start Nova services ([[#Start_Nova_services|Example]]) | |
− | + | * End maintenance period | |
− | + | ||
==== Detailed examples ==== | ==== Detailed examples ==== | ||
===== Stop services ===== | ===== Stop services ===== |
Revision as of 22:59, 10 September 2014
Contents
Nova Bare-metal to Ironic migration
Assumptions / Requirements
- Migration is only supported *within* Juno release
- Migrating live instances between virt drivers in Nova is not tested! It is NOT recommended.
- Migrating from Icehouse-baremetal -> Juno-ironic is not supported
- The nova-compute and nova-scheduler will need to be restarted
- Icehouse Nova deployed with:
- Nova "bare-metal" driver
- Populated nova_bm database
- Nova Juno release admin upgrades applied
- Deploy-ironic kernel and ramdisk, uploaded in to glance ( DIB )
- Empty Ironic database exists
High Level Walk Through
- Start maintenance period (to prevent API service access for upgrade)
- Stop Nova services (Example)
- Update nova-compute configuration (nova.conf)
- Update flavor metadata to reference Ironic's deploy kernel & ramdisk (Example)
- Run ironic-nova-bm-migrate script to migrate nova-bm nodes and interfaces to ironic nodes and ports
- Start Ironic services (Example)
- Ensure proper start-up
- (Re)start Nova services (Example)
- End maintenance period
Detailed examples
Stop services
sudo service nova-compute stop sudo service nova-scheduler stop
Changes
compute_driver = nova.virt.ironic.IronicDriver scheduler_host_manager = nova.scheduler.ironic_host_manager.IronicHostManager
Ironic section
[ironic] admin_username = ironic admin_password = password admin_url = http://keystone.host:35357/v2.0 admin_tenant_name = service
Baremetal section
[Baremetal] sql_connection = db tftp_root = /tftpboot flavor_extra_specs = cpu_arch / arch driver = nova.virt.baremetal.pxe.PXE pxe_network_config=True pxe_deploy_timeout= pxe_deploy_timeout power_manager = power_manager virtual_power_host_user=user virtual_power_host_key=/mnt/state/var/lib/nova/virtual-power-key virtual_power_ssh_host=ssh_host virtual_power_type=type
Start Ironic services
sudo service ironic-api start sudo service ironic-conductor start
Start Nova services
sudo service nova-compute start sudo service nova-scheduler start
Update flavor
dkid=$(glance image-create --name "deploy-ironic-kernel" --public --disk-format aki --file deploy-ironic.kernel | awk ' / id / {print $4}') drid=$(glance image-create --name "deploy-ironic-ramdisk" --public --disk-format ari --file deploy-ironic.initramfs | awk ' / id / {print $4}') nova flavor-key baremetal set "baremetal:deploy_kernel_id"="$dkid" nova flavor-key baremetal set "baremetal:deploy_ramdisk_id"="$drid"