Questo contenuto non è disponibile nella lingua selezionata.

10.4. Rebooting Compute Nodes


Reboot each Compute node individually and ensure zero downtime of instances in your OpenStack Platform environment. This involves the following workflow:
  1. Select a Compute node to reboot
  2. Migrate its instances to another Compute node
  3. Reboot the empty Compute node

From the undercloud, list all Compute nodes and their UUIDs:
$ source ~/stackrc
$ nova list | grep "compute"
Copy to Clipboard Toggle word wrap

Select a Compute node to reboot and first migrate its instances using the following process:
  1. From the undercloud, select a Compute Node to reboot and disable it:
    $ source ~/overcloudrc
    $ nova service-list
    $ nova service-disable [hostname] nova-compute
    Copy to Clipboard Toggle word wrap
  2. List all instances on the Compute node:
    $ nova list --host [hostname]
    Copy to Clipboard Toggle word wrap
  3. Select a second Compute Node to act as the target host for migrating instances. This host needs enough resources to host the migrated instances. From the undercloud, migrate each instance from the disabled host to the target host.
    $ nova live-migration [instance-name] [target-hostname]
    $ nova migration-list
    $ nova resize-confirm [instance-name]
    Copy to Clipboard Toggle word wrap
  4. Repeat this step until you have migrated all instances from the Compute Node.

Important

For full instructions on configuring and migrating instances, see Section 8.9, “Migrating VMs from an Overcloud Compute Node”.

Reboot the Compute node using the following process
  1. Log into the Compute Node and reboot it:
    $ sudo reboot
    Copy to Clipboard Toggle word wrap
  2. Wait until the node boots.
  3. Enable the Compute Node again:
    $ source ~/overcloudrc
    $ nova service-enable [hostname] nova-compute
    Copy to Clipboard Toggle word wrap
  4. Select the next node to reboot.
Torna in cima
Red Hat logoGithubredditYoutubeTwitter

Formazione

Prova, acquista e vendi

Community

Informazioni sulla documentazione di Red Hat

Aiutiamo gli utenti Red Hat a innovarsi e raggiungere i propri obiettivi con i nostri prodotti e servizi grazie a contenuti di cui possono fidarsi. Esplora i nostri ultimi aggiornamenti.

Rendiamo l’open source più inclusivo

Red Hat si impegna a sostituire il linguaggio problematico nel codice, nella documentazione e nelle proprietà web. Per maggiori dettagli, visita il Blog di Red Hat.

Informazioni su Red Hat

Forniamo soluzioni consolidate che rendono più semplice per le aziende lavorare su piattaforme e ambienti diversi, dal datacenter centrale all'edge della rete.

Theme

© 2025 Red Hat