Manage a pool of nodes for a distributed test infrastructure

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David Shrewsbury a0dca6ae12 Allow testing with external zookeeper It can be handy to test against an already running zookeeper, rather than requiring one be installed in your test environment. Allow for that by using the NODEPOOL_ZK_HOST environment variable. This also gives each ZKTestCase based test a pre-existing client connection that can be used for testing. To avoid znode path conflicts, each connection is chroot'ed under /nodepool_test/{uniqueInt}. We attempt to remove the {uniqueInt} znode and children as part of the test cleanup (also removed at setUp time if cleanup fails). This will leave a single znode for /nodepool_test, but if many tests fail for some reason, it is easier to remove a single root node rather than potentially many of them if we do not chroot. Change-Id: I4fd61b16353c16bed2744e0d863ce188019430cd		2016-07-07 16:32:06 -04:00
devstack	Enable a fake statsd server for devstack testing	2016-02-15 13:40:45 +11:00
doc	Document clouds.yaml as the preferred configuration	2016-02-10 13:35:45 -06:00
nodepool	Allow testing with external zookeeper	2016-07-07 16:32:06 -04:00
tools	Consume clouds.yaml from /etc/openstack	2015-10-30 11:36:01 +09:00
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.testr.conf	Add a test for subnodes	2014-03-31 09:22:00 -07:00
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README.rst	Nodepool Install failure	2015-10-29 10:44:41 +05:30
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tox.ini	Allow testing with external zookeeper	2016-07-07 16:32:06 -04:00

README.rst

Nodepool

Nodepool is a service used by the OpenStack CI team to deploy and manage a pool of devstack images on a cloud server for use in OpenStack project testing.

Developer setup

Install dependencies:

sudo apt-get update
sudo apt-get -qy install git mysql-server libmysqlclient-dev g++\
                 python-dev python-pip libffi-dev libssl-dev qemu-utils\
                 libxml2-dev libxslt1-dev python-lxml
mkdir src
cd ~/src
git clone git://git.openstack.org/openstack-infra/system-config
git clone git://git.openstack.org/openstack-infra/nodepool
cd nodepool
sudo pip install -U -r requirements.txt
sudo pip install -e .

If you're testing a specific patch that is already in gerrit, you will also want to install git-review and apply that patch while in the nodepool directory, ie:

git review -x XXXXX

Create or adapt a nodepool yaml file. You can adapt an infra/system-config one, or fake.yaml as desired. Note that fake.yaml's settings won't Just Work - consult ./modules/openstack_project/templates/nodepool/nodepool.yaml.erb in the infra/system-config tree to see a production config.

If the cloud being used has no default_floating_pool defined in nova.conf, you will need to define a pool name using the nodepool yaml file to use floating ips.

Set up database for interactive testing:

mysql -u root

mysql> create database nodepool;
mysql> GRANT ALL ON nodepool.* TO 'nodepool'@'localhost';
mysql> flush privileges;

Set up database for unit tests:

mysql -u root
mysql> grant all privileges on *.* to 'openstack_citest'@'localhost' identified by 'openstack_citest' with grant option;
mysql> flush privileges;
mysql> create database openstack_citest;

Export variable for your ssh key so you can log into the created instances:

export NODEPOOL_SSH_KEY=`cat ~/.ssh/id_rsa.pub | awk '{print $2}'`

Start nodepool with a demo config file (copy or edit fake.yaml to contain your data):

export STATSD_HOST=127.0.0.1
export STATSD_PORT=8125
nodepoold -d -c tools/fake.yaml

All logging ends up in stdout.

Use the following tool to check on progress:

nodepool image-list

After each run (the fake nova provider is only in-memory):

mysql> delete from snapshot_image; delete from node;