Devstack: Neutron did not start

[YujiAzama]

In Devstack deployment, Neutron did not start.

service_plugin in neutron.conf should be deleted.

The devstack log is shown below:

2017-05-09 03:49:16.667 | + lib/neutron-legacy:start_neutron_service_and_check:470 : echo 'Waiting for Neutron to start...'
2017-05-09 03:49:16.667 | Waiting for Neutron to start...
2017-05-09 03:49:16.669 | + lib/neutron-legacy:start_neutron_service_and_check:472 : local 'testcmd=wget --no-proxy -q -O- http://158.69.65.17:9696'
2017-05-09 03:49:16.670 | + lib/neutron-legacy:start_neutron_service_and_check:473 : test_with_retry 'wget --no-proxy -q -O- http://158.69.65.17:9696' 'Neutron did not start' 60
2017-05-09 03:49:16.672 | + functions-common:test_with_retry:2441 : local 'testcmd=wget --no-proxy -q -O- http://158.69.65.17:9696'
2017-05-09 03:49:16.674 | + functions-common:test_with_retry:2442 : local 'failmsg=Neutron did not start'
2017-05-09 03:49:16.676 | + functions-common:test_with_retry:2443 : local until=60
2017-05-09 03:49:16.678 | + functions-common:test_with_retry:2444 : local sleep=0.5
2017-05-09 03:49:16.680 | + functions-common:test_with_retry:2446 : time_start test_with_retry
2017-05-09 03:49:16.681 | + functions-common:time_start:2489 : local name=test_with_retry
2017-05-09 03:49:16.684 | + functions-common:time_start:2490 : local start_time=
2017-05-09 03:49:16.686 | + functions-common:time_start:2491 : [[ -n '' ]]
2017-05-09 03:49:16.688 | ++ functions-common:time_start:2494 : date +%s
2017-05-09 03:49:16.691 | + functions-common:time_start:2494 : _TIME_START[$name]=1494301756
2017-05-09 03:49:16.693 | + functions-common:test_with_retry:2447 : timeout 60 sh -c 'while ! wget --no-proxy -q -O- http://158.69.65.17:9696; do sleep 0.5; done'
2017-05-09 03:50:16.704 | + functions-common:test_with_retry:2448 : die 2448 'Neutron did not start'
2017-05-09 03:50:16.706 | + functions-common:die:186 : local exitcode=0
2017-05-09 03:50:16.709 | [Call Trace]
2017-05-09 03:50:16.709 | ./stack.sh:1272:start_neutron_service_and_check
2017-05-09 03:50:16.709 | /opt/stack/new/devstack/lib/neutron-legacy:473:test_with_retry
2017-05-09 03:50:16.709 | /opt/stack/new/devstack/functions-common:2448:die
2017-05-09 03:50:16.713 | [ERROR] /opt/stack/new/devstack/functions-common:2448 Neutron did not start
2017-05-09 03:50:17.717 | Error on exit

The neutron.conf is shown below:

[DEFAULT]
service_plugins = neutron.services.l3_router.l3_router_plugin.L3RouterPlugin,neutron.services.metering.metering_plugin.MeteringPlugin
rpc_state_report_workers = 0
api_workers = 2
notify_nova_on_port_data_changes = True
notify_nova_on_port_status_changes = True
auth_strategy = keystone
allow_overlapping_ips = True
debug = True
core_plugin = calico
transport_url = rabbit://stackrabbit:secretrabbit@158.69.65.17:5672/
logging_exception_prefix = ERROR %(name)s %(instance)s
logging_default_format_string = %(levelname)s %(name)s [-] %(instance)s%(color)s%(message)s
logging_context_format_string = %(levelname)s %(name)s [%(request_id)s %(project_name)s %(user_name)s] %(instance)s%(message)s
logging_debug_format_suffix = {{(pid=%(process)d) %(funcName)s %(pathname)s:%(lineno)d}}
bind_host = 0.0.0.0
use_syslog = False
state_path = /opt/stack/data/neutron

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/463498

[Nell Jerram (neil-jerram)]

Thanks Azama-san. Please note that at http://git.openstack.org/cgit/openstack/networking-calico/tree/devstack/plugin.sh#n160 we have (already):

      inidelete $NEUTRON_CONF DEFAULT service_plugins

So I think the problem is that the DevStack configuration for Neutron has just changed, so that it rewrites service_plugins after that point. I think it is configure_neutron_after_post_config that does that.

So I'm hoping this will be fixed by adding

Q_SERVICE_PLUGIN_CLASSES=

to the settings of the networking-calico plugin.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/463498
Committed: https://git.openstack.org/cgit/openstack/networking-calico/commit/?id=4234da5d475d116e310eda54bc370dd5a2e69e3b
Submitter: Jenkins
Branch: master

commit 4234da5d475d116e310eda54bc370dd5a2e69e3b
Author: Neil Jerram <email address hidden>
Date: Tue May 9 10:09:06 2017 +0100

    DevStack plugin: fix for recent neutron and devstack changes

    - Set variables so that configure_neutron_after_post_config does not set
      service_plugins. (What changed here has that neutron-legacy's setting
      of service_plugins was deferred. Previously neutron-legacy set some
      value, and then the networking-calico deleted that. Now
      neutron-legacy sets its value after the last time that the
      networking-calico plugin code has run.)

    - Don't use systemd, as our running of auto-bird-conf is not
      systemd-compatible yet.

    - Remove 'coverage=eventlet' declaration from .coveragerc.

    - Also disable q-metering, as we have no use for it.

    Change-Id: If08b226ce53051e50030ee961a9b05a62d44b204
    Closes-Bug: #1689483
    Closes-Bug: #1690101