Tacker in Kolla¶
“Tacker is an OpenStack service for NFV Orchestration with a general purpose VNF Manager to deploy and operate Virtual Network Functions (VNFs) and Network Services on an NFV Platform. It is based on ETSI MANO Architectural Framework.” [1].
Overview¶
As of the Pike release, tacker requires the following services to be enabled to operate correctly.
- Core compute stack (nova, neutron, glance, etc)
- Heat
- Mistral + Redis
- Barbican (Required only for multinode)
Optionally tacker supports the following services and features.
- Aodh
- Ceilometer
- Networking-sfc
- Opendaylight
Compatibility¶
Tacker is supported by the following distros and install_types.
- Centos, Redhat and Oraclelinux.
- Source and binary images.
- Debian and Ubuntu.
- Only source images.
Preparation and Deployment¶
By default tacker and required services are disabled in
the group_vars/all.yml file.
In order to enable them, you need to edit the file
/etc/kolla/globals.yml and set the following variables:
Note
Heat is enabled by default, ensure it is not disabled.
enable_tacker: "yes"
enable_barbican: "yes"
enable_mistral: "yes"
enable_redis: "yes"
Warning
Barbican is required in multinode deployments to share VIM fernet_keys.
If not enabled, only one tacker-server host will have the keys on it
and any request made to a different tacker-server will fail with a
similar error as No such file or directory /etc/tacker/vim/fernet_keys
Deploy tacker and related services.
$ kolla-ansible deploy
Verify¶
Generate the credentials file.
$ kolla-ansible post-deploy
Source credentials file.
$ . /etc/kolla/admin-openrc.sh
Create base neutron networks and glance images.
$ sh tools/init-runonce
Note
init-runonce file is located in $PYTHON_PATH/kolla-ansible
folder in kolla-ansible installation from pip.
In kolla-ansible git repository a tacker demo
is present in kolla-ansible/contrib/demos/tacker/ that will
create a very basic VNF from a cirros image in demo-net network.
Install python-tackerclient.
Note
Barbican, heat and mistral python clients are in tacker’s requirements and will be installed as dependency.
$ pip install python-tackerclient
Execute deploy-tacker-demo script to initialize the VNF creation.
$ sh deploy-tacker-demo
Tacker demo script will create sample VNF Descriptor (VNFD) file, then register a default VIM, create a tacker VNFD and finally deploy a VNF from the previously created VNFD.
After a few minutes, the tacker VNF is ACTIVE with a cirros instance running in nova and with its corresponding heat stack CREATION_COMPLETE.
Verify tacker VNF status is ACTIVE.
$ tacker vnf-list
+--------------------------------------+------------------+-----------------------+--------+--------------------------------------+--------------------------------------+
| id | name | mgmt_url | status | vim_id | vnfd_id |
+--------------------------------------+------------------+-----------------------+--------+--------------------------------------+--------------------------------------+
| c52fcf99-101d-427b-8a2d-c9ef54af8b1d | kolla-sample-vnf | {"VDU1": "10.0.0.10"} | ACTIVE | eb3aa497-192c-4557-a9d7-1dff6874a8e6 | 27e8ea98-f1ff-4a40-a45c-e829e53b3c41 |
+--------------------------------------+------------------+-----------------------+--------+--------------------------------------+--------------------------------------+
Verify nova instance status is ACTIVE.
$ openstack server list
+--------------------------------------+-------------------------------------------------------+--------+--------------------+--------+-----------------------------------------------------------------------------------------------------------------------+
| ID | Name | Status | Networks | Image | Flavor |
+--------------------------------------+-------------------------------------------------------+--------+--------------------+--------+-----------------------------------------------------------------------------------------------------------------------+
| d2d59eeb-8526-4826-8f1b-c50b571395e2 | ta-cf99-101d-427b-8a2d-c9ef54af8b1d-VDU1-fchiv6saay7p | ACTIVE | demo-net=10.0.0.10 | cirros | tacker.vnfm.infra_drivers.openstack.openstack_OpenStack-c52fcf99-101d-427b-8a2d-c9ef54af8b1d-VDU1_flavor-yl4bzskwxdkn |
+--------------------------------------+-------------------------------------------------------+--------+--------------------+--------+-----------------------------------------------------------------------------------------------------------------------+
Verify Heat stack status is CREATE_COMPLETE.
$ openstack stack list
+--------------------------------------+----------------------------------------------------------------------------------------------+----------------------------------+-----------------+----------------------+--------------+
| ID | Stack Name | Project | Stack Status | Creation Time | Updated Time |
+--------------------------------------+----------------------------------------------------------------------------------------------+----------------------------------+-----------------+----------------------+--------------+
| 289a6686-70f6-4db7-aa10-ed169fe547a6 | tacker.vnfm.infra_drivers.openstack.openstack_OpenStack-c52fcf99-101d-427b-8a2d-c9ef54af8b1d | 1243948e59054aab83dbf2803e109b3f | CREATE_COMPLETE | 2017-08-23T09:49:50Z | None |
+--------------------------------------+----------------------------------------------------------------------------------------------+----------------------------------+-----------------+----------------------+--------------+
After the correct functionality of tacker is verified, tacker demo
can be cleaned up executing cleanup-tacker script.
$ sh cleanup-tacker
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