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Sourav Banerjee d8ed2b6b2b Enhance exc_wrapper to handle internal exceptions
The idea was to reuse the existing exception handling decorator
in quark/utils.py to use the same decorator to handle exceptions
in internal methods. The enhanced decorator accepts an arguement
to specify if we are handling exceptions in an internal method.

Existing exception handling for api methods do not change.
This commit adds the enhanced wrapper and relevant unit tests, in
addition to adding the wrapper to internal calls in ports.py

Change-Id: I2aa2e3bdd06ff8f839f65e462b885c34b024c157
Implements: blueprint enhance-exc-wrapper
2018-02-05 20:33:04 +05:30
2016-10-03 19:53:47 +00:00
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quark

Caution

Quark is not currently designed to work with DevStack (but it can with the instructions below). We mention this because these instructions can become invalid if and when changes are pushed to DevStack. Please also not that once Quark+Neutron+DevStack+Tempest are wired up, the Tempest tests are failing. Please watch this Quark Github Issue for updates on this.

Dependencies

aiclib

Database Migrations

Here

Install with DevStack and Neutron

  • Ensure you have a user already with sudo rights. If you need one, do this as root:

    /usr/sbin/adduser stack
    echo "stack ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
  • Switch to user with sudo rights:

    sudo su - stack  # or whatever user you already have (instead of stack)
  • Clone devstack:

    git clone https://github.com/openstack-dev/devstack
  • Go into devstack folder:

    cd devstack
  • Create the local.conf configuration file that DevStack needs (localrc is inside it now) with Neutron as an anabled service (NOTE: This notation is explained here):

    [[local|localrc]]
    DATABASE_PASSWORD=password
    ADMIN_PASSWORD=password
    SERVICE_PASSWORD=password
    SERVICE_TOKEN=password
    RABBIT_PASSWORD=password
    # Enable Logging
    LOGFILE=/opt/stack/logs/stack.sh.log
    VERBOSE=True
    LOG_COLOR=True
    SCREEN_LOGDIR=/opt/stack/logs
    # Pre-requisite
    ENABLED_SERVICES=rabbit,mysql,key
    # Horizon (always use the trunk)
    ENABLED_SERVICES+=,horizon
    HORIZON_REPO=https://github.com/openstack/horizon
    HORIZON_BRANCH=master
    # Nova
    ENABLED_SERVICES+=,n-api,n-crt,n-obj,n-cpu,n-cond,n-sch
    IMAGE_URLS+=",https://launchpad.net/cirros/trunk/0.3.0/+download/cirros-0.3.0-x86_64-disk.img"
    # Glance
    ENABLED_SERVICES+=,g-api,g-reg
    # Neutron
    ENABLED_SERVICES+=,q-api,q-svc,q-agt,q-dhcp,q-l3,q-lbaas,q-meta,neutron
    # Cinder
    ENABLED_SERVICES+=,cinder,c-api,c-vol,c-sch
    # Tempest
    ENABLED_SERVICES+=,tempest
  • Remove Python's six packge:

    # Old version of six package in /usr/lib/python2.7/dist-packages/ crashes
    # quark server
    sudo rm -f /usr/lib/python2.7/dist-packages/six.py /usr/lib/python2.7/dist-packages/six.pyc
  • Install Devstack:

    ./stack.sh
  • Install aiclib:

    sudo pip install aiclib
    # the reason for sudo here is if you don't you'll get permission denied when it tries to install to /usr/local/lib/python2.7/dist/packages
  • Install quark:

    cd /opt/stack  #the folder where devstack installed all the services
    git clone https://github.com/rackerlabs/quark
    cd quark
    sudo python setup.py develop
    # the reason for sudo here is if you don't you'll get permission denied when it tries to install to /usr/local/lib/python2.7/dist/packages
  • Validate quark installed:

    pip freeze | grep quark
    # should see something like:
    # -e git+http://github.com/rackerlabs/quark@ff5b05943b44a44712b9fc352065a414bb2a6bf9#egg=quark-master
  • Now edit the /etc/neutron/neutron.conf file to setup Quark as the core plugin:

    vim /etc/neutron/neutron.conf
    # Search for line containing 'core_plugin = ' and replace it with
    # 'core_plugin = quark.plugin.Plugin'
    #
    # Search for line containing 'service_plugins = ' and remove
    # 'neutron.services.l3_router.l3_router_plugin.L3RouterPlugin,' from
    # service plugins list
  • Stop Neutron by going into the screen session and going to the q-svc window and pressing ctrl-C:

    screen -r  # or go into devstack clone and then type ./rejoin-stack.sh
    # press ctrl+6 to go to q-svc window
    ctrl+C
  • Go back into screen and restart neutron (q-svc window):

    screen -r  stack # or go into folder where you cloned devstack then type ./rejoin-stack.sh
    # if screen command returns 'Cannot open your terminal /dev/pts/0' execute 'sudo chmod o+rwx /dev/pts/0'
    # go to q-svc window (ctrl+a, 7 currently does it)
    # previous command that devstack used to start neutron should be in history, press up arrow key to see it
  • You shouldn't receive any errors. To validate Quark has started up, you can scroll up in q-svc screen window (ctrl+a, esc, page-up) and look for the following lines:

    DEBUG neutron.service [-] core_plugin = quark.plugin.Plugin
    ...
    DEBUG neutron.service [-] QUARK.default_ipam_strategy=ANY
    DEBUG neutron.service [-] QUARK.default_net_strategy={}
    DEBUG neutron.service [-] QUARK.default_network_type=BASE
    DEBUG neutron.service [-] QUARK.ipam_driver=quark.ipam.QuarkIpam
    DEBUG neutron.service [-] QUARK.ipam_reuse_after=7200
    DEBUG neutron.service [-] QUARK.net_driver=quark.drivers.base.BaseDriver
    DEBUG neutron.service [-] QUARK.strategy_driver=quark.network_strategy.JSONStrategy

GOTCHAS

  • you won't be able to create ports until you've added at least one mac_address_range (use this script to do it, changing host IP and admin password)
Description
Highly performant and scalable Neutron plugin.
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