Python bindings to the OpenStack Nova API

This is a client for the OpenStack Nova API. There's a Python API (the novaclient module), and a command-line script (nova). Each implements 100% of the OpenStack Nova API.

See the OpenStack CLI guide for information on how to use the nova command-line tool. You may also want to look at the OpenStack API documentation.

The project is hosted on Launchpad, where bugs can be filed. The code is hosted on Github. Patches must be submitted using Gerrit, not Github pull requests.

python-novaclient is licensed under the Apache License like the rest of OpenStack.

Contents:

Command-line API

Installing this package gets you a shell command, nova, that you can use to interact with any OpenStack cloud.

You'll need to provide your OpenStack username and password. You can do this with the --os-username, --os-password and --os-tenant-name params, but it's easier to just set them as environment variables:

export OS_USERNAME=openstack
export OS_PASSWORD=yadayada
export OS_TENANT_NAME=myproject

You will also need to define the authentication url with --os-auth-url and the version of the API with --os-compute-api-version. Or set them as an environment variables as well:

export OS_AUTH_URL=http://example.com:8774/v1.1/
export OS_COMPUTE_API_VERSION=1.1

If you are using Keystone, you need to set the OS_AUTH_URL to the keystone endpoint:

export OS_AUTH_URL=http://example.com:5000/v2.0/

Since Keystone can return multiple regions in the Service Catalog, you can specify the one you want with --os-region-name (or export OS_REGION_NAME). It defaults to the first in the list returned.

You'll find complete documentation on the shell by running nova help:

usage: nova [--debug] [--no-cache] [--timings]
            [--os-username <auth-user-name>] [--os-password <auth-password>]
            [--os-tenant-name <auth-tenant-name>] [--os-auth-url <auth-url>]
            [--os-region-name <region-name>] [--os-auth-system <auth-system>]
            [--service-type <service-type>] [--service-name <service-name>]
            [--volume-service-name <volume-service-type>]
            [--endpoint-type <endpoint-type>]
            [--os-compute-api-version <compute-api-ver>] [--insecure]
            [--bypass-url <bypass-url>]
            <subcommand> ...

Command-line interface to the OpenStack Nova API.

Positional arguments:
  <subcommand>
    absolute-limits     Print a list of absolute limits for a user
    actions             Retrieve server actions.
    add-fixed-ip        Add new IP address to network.
    add-floating-ip     Add a floating IP address to a server.
    aggregate-add-host  Add the host to the specified aggregate.
    aggregate-create    Create a new aggregate with the specified details.
    aggregate-delete    Delete the aggregate by its id.
    aggregate-details   Show details of the specified aggregate.
    aggregate-list      Print a list of all aggregates.
    aggregate-remove-host
                        Remove the specified host from the specified aggregate.
    aggregate-set-metadata
                        Update the metadata associated with the aggregate.
    aggregate-update    Update the aggregate's name and optionally
                        availability zone.
    boot                Boot a new server.
    console-log         Get console log output of a server.
    credentials         Show user credentials returned from auth
    delete              Immediately shut down and delete a server.
    describe-resource   Show details about a resource
    diagnostics         Retrieve server diagnostics.
    dns-create          Create a DNS entry for domain, name and ip.
    dns-create-private-domain
                        Create the specified DNS domain.
    dns-create-public-domain
                        Create the specified DNS domain.
    dns-delete          Delete the specified DNS entry.
    dns-delete-domain   Delete the specified DNS domain.
    dns-domains         Print a list of available dns domains.
    dns-list            List current DNS entries for domain and ip or domain
                        and name.
    endpoints           Discover endpoints that get returned from the
                        authenticate services
    evacuate            Evacuate a server from failed host
    flavor-create       Create a new flavor.
    flavor-delete       Delete a specific flavor.
    flavor-list         Print a list of available 'flavors' (sizes of
                        servers).
    flavor-show         Show details about the given flavor.
    flavor-key          Set or unset extra_spec for a flavor.
    flavor-access-list  Print access information about the given flavor.
    flavor-access-add   Add flavor access for the given tenant.
    flavor-access-remove
                        Remove flavor access for the given tenant.
    floating-ip-create  Allocate a floating IP for the current tenant.
    floating-ip-delete  De-allocate a floating IP.
    floating-ip-list    List floating ips for this tenant.
    floating-ip-pool-list
                        List all floating ip pools.
    get-vnc-console     Get a vnc console to a server.
    get-spice-console   Get a spice console to a server.
    host-action         Perform a power action on a host.
    host-update         Update host settings.
    image-create        Create a new image by taking a snapshot of a running
                        server.
    image-delete        Delete an image.
    image-list          Print a list of available images to boot from.
    image-meta          Set or Delete metadata on an image.
    image-show          Show details about the given image.
    keypair-add         Create a new key pair for use with instances
    keypair-delete      Delete keypair by its name
    keypair-list        Print a list of keypairs for a user
    list                List active servers.
    live-migration      Migrates a running instance to a new machine.
    lock                Lock a server.
    meta                Set or Delete metadata on a server.
    migrate             Migrate a server.
    pause               Pause a server.
    rate-limits         Print a list of rate limits for a user
    reboot              Reboot a server.
    rebuild             Shutdown, re-image, and re-boot a server.
    remove-fixed-ip     Remove an IP address from a server.
    remove-floating-ip  Remove a floating IP address from a server.
    rename              Rename a server.
    rescue              Rescue a server.
    resize              Resize a server.
    resize-confirm      Confirm a previous resize.
    resize-revert       Revert a previous resize (and return to the previous
                        VM).
    resume              Resume a server.
    root-password       Change the root password for a server.
    secgroup-add-group-rule
                        Add a source group rule to a security group.
    secgroup-add-rule   Add a rule to a security group.
    secgroup-create     Create a security group.
    secgroup-update     Update a security group.
    secgroup-delete     Delete a security group.
    secgroup-delete-group-rule
                        Delete a source group rule from a security group.
    secgroup-delete-rule
                        Delete a rule from a security group.
    secgroup-list       List security groups for the curent tenant.
    secgroup-list-rules
                        List rules for a security group.
    show                Show details about the given server.
    ssh                 SSH into a server.
    start               Start a server.
    stop                Stop a server.
    suspend             Suspend a server.
    unlock              Unlock a server.
    unpause             Unpause a server.
    unrescue            Unrescue a server.
    usage-list          List usage data for all tenants
    volume-attach       Attach a volume to a server.
    volume-create       Add a new volume.
    volume-delete       Remove a volume.
    volume-detach       Detach a volume from a server.
    volume-list         List all the volumes.
    volume-show         Show details about a volume.
    volume-snapshot-create
                        Add a new snapshot.
    volume-snapshot-delete
                        Remove a snapshot.
    volume-snapshot-list
                        List all the snapshots.
    volume-snapshot-show
                        Show details about a snapshot.
    volume-type-create  Create a new volume type.
    volume-type-delete  Delete a specific flavor
    volume-type-list    Print a list of available 'volume types'.
    x509-create-cert    Create x509 cert for a user in tenant
    x509-get-root-cert  Fetches the x509 root cert.
    bash-completion     Prints all of the commands and options to stdout so
                        that the nova.bash_completion script doesn't have to
                        hard code them.
    help                Display help about this program or one of its
                        subcommands.

Optional arguments:
  --debug               Print debugging output
  --no-cache            Don't use the auth token cache.
  --timings             Print call timing info
  --os-username <auth-user-name>
                        Defaults to env[OS_USERNAME].
  --os-password <auth-password>
                        Defaults to env[OS_PASSWORD].
  --os-tenant-name <auth-tenant-name>
                        Defaults to env[OS_TENANT_NAME].
  --os-auth-url <auth-url>
                        Defaults to env[OS_AUTH_URL].
  --os-region-name <region-name>
                        Defaults to env[OS_REGION_NAME].
  --os-auth-system <auth-system>
                        Defaults to env[OS_AUTH_SYSTEM].
  --service-type <service-type>
                        Defaults to compute for most actions
  --service-name <service-name>
                        Defaults to env[NOVA_SERVICE_NAME]
  --volume-service-name <volume-service-type>
                        Defaults to env[NOVA_VOLUME_SERVICE_NAME]
  --endpoint-type <endpoint-type>
                        Defaults to env[NOVA_ENDPOINT_TYPE] or publicURL.
  --os-compute-api-version <compute-api-ver>
                        Accepts 1.1, defaults to env[OS_COMPUTE_API_VERSION].      --username USERNAME   Deprecated
  --insecure            Explicitly allow novaclient to perform "insecure" SSL
                        (https) requests. The server's certificate will not be
                        verified against any certificate authorities. This
                        option should be used with caution.
  --bypass-url <bypass-url>
                        Use this API endpoint instead of the Service Catalog

See "nova help COMMAND" for help on a specific command.

Python API

There's also a complete Python API, but it has not yet been documented.

Quick-start using keystone:

# use v2.0 auth with http://example.com:5000/v2.0/")
>>> from novaclient.v1_1 import client
>>> nt = client.Client(USER, PASS, TENANT, AUTH_URL, service_type="compute")
>>> nt.flavors.list()
[...]
>>> nt.servers.list()
[...]
>>> nt.keypairs.list()
[...]