openstack-ansible-os_neutron/handlers/main.yml
Jesse Pretorius b0241f8100 Use a common python build/install role
In order to radically simplify how we prepare the service
venvs, we use a common role to do the wheel builds and the
venv preparation. This makes the process far simpler to
understand, because the role does its own building and
installing. It also reduces the code maintenance burden,
because instead of duplicating the build processes in the
repo_build role and the service role - we only have it all
done in a single place.

We also change the role venv tag var to use the integrated
build's common venv tag so that we can remove the role's
venv tag in group_vars in the integrated build. This reduces
memory consumption and also reduces the duplication.

This is by no means the final stop in the simplification
process, but it is a step forward. The will be work to follow
which:

1. Replaces 'developer mode' with an equivalent mechanism
   that uses the common role and is simpler to understand.
   We will also simplify the provisioning of pip install
   arguments when doing this.
2. Simplifies the installation of optional pip packages.
   Right now it's more complicated than it needs to be due
   to us needing to keep the py_pkgs plugin working in the
   integrated build.
3. Deduplicates the distro package installs. Right now the
   role installs the distro packages twice - just before
   building the venv, and during the python_venv_build role
   execution.

Depends-On: https://review.openstack.org/598957
Change-Id: I1c1dcd73c9d5d78c0a8e40149ff84cbba828f3e2
Implements: blueprint python-build-install-simplification
Signed-off-by: Jesse Pretorius <jesse.pretorius@rackspace.co.uk>
2018-09-03 11:04:56 +00:00

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---
# Copyright 2014, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
- name: Stop services
service:
name: "{{ item.service_name }}"
enabled: yes
state: "stopped"
daemon_reload: yes
with_items: "{{ filtered_neutron_services }}"
register: _stop
until: _stop is success
retries: 5
delay: 2
listen:
- "Restart neutron services"
- "venv changed"
# NOTE(cloudnull):
# When installing or upgrading it is possible that an old metadata proxy process will not
# be restarted by the metadata agent when a version changes. To fix it the ns-metadata
# proxy pids are killed if they're not running the current tag. Once the old processeses
# are removed the metadata agent will respawn the missing process within 60 seconds using
# the correct code.
- name: Run ns-metadata-proxy process cleanup
shell: |
for ns_pid in $(pgrep neutron-ns-meta); do
echo $(readlink -f "/proc/$ns_pid/exe") | grep -qv "{{ neutron_venv_tag }}"
if [ $? -eq 0 ]; then
if kill -9 "$ns_pid"; then
logger -s "old metadata proxy pid found and has been cleaned up on: \"$ns_pid\""
fi
fi
done
when: "'neutron-metadata-agent' in (filtered_neutron_services | map(attribute='service_key') | list)"
listen:
- "Restart neutron services"
- "venv changed"
- name: Perform a DB contract
command: "{{ neutron_bin }}/neutron-db-manage upgrade --contract"
become: yes
become_user: "{{ neutron_system_user_name }}"
delegate_to: "{{ groups[neutron_services['neutron-server']['group']][0] }}"
when:
- "ansible_local['openstack_ansible']['neutron']['need_db_contract'] | bool"
- "neutron_services['neutron-server']['group'] in group_names"
- "inventory_hostname == ((groups[neutron_services['neutron-server']['group']] | intersect(ansible_play_hosts)) | list)[0]"
listen:
- "Restart neutron services"
- "venv changed"
- name: Start services
service:
name: "{{ item.service_name }}"
enabled: yes
state: "started"
daemon_reload: yes
with_items: "{{ filtered_neutron_services }}"
register: _start
until: _start is success
retries: 5
delay: 2
listen:
- "Restart neutron services"
- "venv changed"