e081b96221
There are three places that nodepool connects to hosts: - to bootstrap where by definition any existing host key must be wrong - to bring up a snapshot where again any existing host key must be wrong - to check a node is still running Nodepool itself doesn't save the host key, so the third case will typically warn as well, or if an administrator logged into a node from the nodepool user account cause a failure. As such it seems that system host key validation is not useful and just serves to cause failures when a stale key is present. Change-Id: I074314d61b5c520bdd67da24bfd2a8e626da0dc5
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 install git mysql-server libmysqlclient-dev g++ python-dev libzmq-dev
mkdir src
cd ~/src
git clone git://git.openstack.org/openstack-infra/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 XXXXXCreate or adapt a nodepool yaml file. You can adapt an infra/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/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:
mysql -u root
mysql> create database nodepool;
mysql> GRANT ALL ON nodepool.* TO 'nodepool'@'localhost';
mysql> flush privileges;Export variable for your ssh key so you can log into the created instances:
export NODEPOOL_SSH_KEY=`cat ~/.ssh/id_rsa.pub`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.yamlAll logging ends up in stdout.
Use the following tool to check on progress:
nodepool image-listAfter each run (the fake nova provider is only in-memory):
mysql> delete from snapshot_image; delete from node;