worlddump.py fails to kill processes: neutron-*-agent not found

[Eric Xie]

When ./stack.sh failed and exited, got error
Error on exit
neutron-dhcp-agent: no process found
neutron-l3-agent: no process found
neutron-metadata-agent: no process found
neutron-openvswitch-agent: no process found

local.conf
[[local|localrc]]
ADMIN_PASSWORD=secret
DATABASE_PASSWORD=$ADMIN_PASSWORD
RABBIT_PASSWORD=$ADMIN_PASSWORD
SERVICE_PASSWORD=$ADMIN_PASSWORD
DEST=/opt/stack
DATA_DIR=/opt/stack/data
LOGFILE=/opt/stack/devstacklog.txt

RECLONE=yes

# Enabling manila services
LIBS_FROM_GIT=python-manilaclient
enable_plugin manila https://git.openstack.org/openstack/manila
enable_plugin manila-ui https://github.com/openstack/manila-ui
enable_plugin manila-tempest-plugin https://git.openstack.org/openstack/manila-tempest-plugin

# Generic Back end config options
SHARE_DRIVER=manila.share.drivers.generic.GenericShareDriver
MANILA_ENABLED_BACKENDS=tokyo,shanghai
MANILA_BACKEND1_CONFIG_GROUP_NAME=tokyo
MANILA_BACKEND2_CONFIG_GROUP_NAME=shanghai
MANILA_SHARE_BACKEND1_NAME=TOKYO
MANILA_SHARE_BACKEND2_NAME=SHANGHAI
MANILA_OPTGROUP_tokyo_driver_handles_share_servers=True
MANILA_OPTGROUP_shanghai_driver_handles_share_servers=True
MANILA_OPTGROUP_tokyo_connect_share_server_to_tenant_network=True
MANILA_OPTGROUP_shanghai_connect_share_server_to_tenant_network=True
MANILA_DEFAULT_SHARE_TYPE_EXTRA_SPECS='snapshot_support=True create_share_from_snapshot_support=True'
MANILA_CONFIGURE_DEFAULT_TYPES=True

# Storage Virtual Machine settings for the generic driver
MANILA_SERVICE_IMAGE_ENABLED=True
MANILA_USE_SERVICE_INSTANCE_PASSWORD=True

Version of devstack:
$ git log
commit 12e5ddcc2d0058ead4de76053db698ed21d4e813
Author: Masayuki Igawa <email address hidden>
Date: Wed Sep 25 12:23:16 2019 +0900

    Add PDF documentation build

    This commit adds PDF documentation build target 'pdf-docs' that will
    build PDF versions of our docs. As per the Train community goal:

     https://governance.openstack.org/tc/goals/selected/train/pdf-doc-generation.html

    Change-Id: Iecb0fe5b957af7dae66bea04dfbd9c2fb4f74a99
    Story: #2006070
    Task: #35456

[Dr. Jens Harbott (j-harbott)]

This is a known issue in worlddump.py, running "killall some-long-process-name" fails to find an kill that process.

[rap (rap25)]

The error is caused because of uwsgi is not installed properly.
uwsgi is required for developing and deploying web applications and services.
Installation of uwsgi is performed by function 'install_apache_uwsgi' in stack.sh and function is defined in devstack/lib/apache file.
Check if it is installed properly, otherwise install it manually using 'pip install uwsgi'.