Hi Corey, Looks like python3-senlinclient is already installed (but we dont use senlin). I would remove it but it wants to pull out all the openstack heat packages, which we use. root@lab-controller:~# dpkg -l | grep -i python3 | grep -i client ii python3-amqp 2.4.0-1~cloud0 all Low-level AMQP client (Python3 version) ii python3-aodhclient 1.0.0-0ubuntu1 all OpenStack Alarming as a Service - Python 3.x client ii python3-barbicanclient 4.6.0-0ubuntu1 all OpenStack Key Management API client - Python 3.x ii python3-blazarclient 2.1.0-0ubuntu1~cloud0 all OpenStack Reservation Service API client - Python 3 ii python3-ceilometerclient 2.9.0-0ubuntu1 all Client library for Openstack Ceilometer API server - Python 3.x ii python3-cinderclient 1:4.1.0-0ubuntu1~cloud0 all Python bindings to the OpenStack Volume API - Python 3.x ii python3-designateclient 2.9.0-0ubuntu1 all client library for the OpenStack Designate API - Python 3.x ii python3-glanceclient 1:2.16.0-0ubuntu1~cloud0 all Client library for Openstack glance server - Python 3.x ii python3-gnocchiclient 7.0.1-0ubuntu1 all bindings to the OpenStack Gnocchi API - Python 3.x ii python3-heatclient 1.17.0-0ubuntu1~cloud0 all client library and CLI for OpenStack Heat - Python 3.x ii python3-httplib2 0.9.2+dfsg-1ubuntu0.1 all comprehensive HTTP client library written for Python3 ii python3-keystoneclient 1:3.19.0-0ubuntu1~cloud0 all client library for the OpenStack Keystone API - Python 3.x ii python3-magnumclient 2.8.0-0ubuntu1 all client library for Magnum API - Python 3.x ii python3-manilaclient 1.27.0-0ubuntu1~cloud0 all OpenStack shared file system as a service - Python 3.x client ii python3-memcache 1.59-1~cloud0 all pure Python memcached client - Python 3.x ii python3-mistralclient 1:3.3.0-0ubuntu1 all OpenStack Workflow as a Service client - Python 3.x ii python3-monascaclient 1.14.0-0ubuntu1~cloud0 all client bindings for the Monasca API - Python 3.x ii python3-neutronclient 1:6.7.0-0ubuntu1 all client API library for Neutron - Python 3.x ii python3-novaclient 2:13.0.0-0ubuntu1~cloud0 all client library for OpenStack Compute API - 3.x ii python3-octaviaclient 1.8.0-0ubuntu1~cloud0 all Octavia client for OpenStack Load Balancing - Python 3.x ii python3-openstackclient 3.18.0-0ubuntu1~cloud0 all OpenStack Command-line Client - Python 3.x ii python3-os-client-config 1.29.0-0ubuntu1 all OpenStack client configuration library - Python 3.x ii python3-osc-lib 1.12.1-0ubuntu1~cloud0 all OpenStackClient Library - Python 3.x ii python3-pymemcache 1.3.2-3 all comprehensive, fast, pure Python memcached client - Python 3.x ii python3-saharaclient 2.2.0-0ubuntu1~cloud0 all Client library for Openstack Sahara API server - Python 3.x module ii python3-senlinclient 1.7.0-0ubuntu2 all OpenStack Clustering API Client Library - Python 3.x ii python3-statsd 3.2.1-2 all Python client for the statsd daemon (Python 3) ii python3-suds 0.7~git20150727.94664dd-5 all Lightweight SOAP client for Python - Python 3.x ii python3-swiftclient 1:3.7.0-0ubuntu1~cloud0 all Client library for Openstack Swift API - Python 3.x ii python3-troveclient 1:2.14.0-0ubuntu1 all Client for OpenStack Database as a Service - Python 3.x ii python3-zaqarclient 1.9.0-0ubuntu1 all OpenStack Zaqar Queueing API, client and library - Python 3.x root@lab-controller:~# apt remove python3-senlinclient -s Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: jq libjq1 libonig4 pyflakes pyflakes3 python-configparser python-designateclient python-diskimage-builder python-flake8 python-keystonemiddleware python-mccabe python-networkx python-passlib python-pexpect python-ptyprocess python-pycadf python-pycodestyle python-pyflakes python-xmltodict python3-aodhclient python3-blazarclient python3-croniter python3-gnocchiclient python3-magnumclient python3-manilaclient python3-monascaclient python3-octaviaclient python3-openstackclient python3-pyflakes python3-saharaclient python3-yaql python3-zaqarclient Use 'apt autoremove' to remove them. The following packages will be REMOVED: heat-api heat-api-cfn heat-engine python3-heat python3-senlinclient 0 upgraded, 0 newly installed, 5 to remove and 32 not upgraded. Remv heat-api [1:12.0.0-0ubuntu1~cloud0] Remv heat-api-cfn [1:12.0.0-0ubuntu1~cloud0] Remv heat-engine [1:12.0.0-0ubuntu1~cloud0] Remv python3-heat [1:12.0.0-0ubuntu1~cloud0] Remv python3-senlinclient [1.7.0-0ubuntu2]