kolla-ansible/doc/source/contributor/kolla-for-openstack-development.rst
confi-surya dbf754655f Following the new PTI for document build
For compliance with the Project Testing Interface [1]
as described in [2]

[1]
https://governance.openstack.org/tc/reference/project-testing-interface.html
[2]
http://lists.openstack.org/pipermail/openstack-dev/2017-December/125710.html

doc8 command is dropped from docs tox envs.
So this affect nothing and run in PEP8.

Related-Bug: #1765348

Depends-On: Icc7fe3a8f9716281de88825e9d5b2fd84de3d00a
Change-Id: Idf9a16111479ccc64004eac9508da575822a3df5
2018-05-21 10:51:59 +01:00

1.9 KiB

Using Kolla For OpenStack Development

Kolla-ansible can be used to deploy containers in a way suitable for doing development on OpenStack services.

Note

This functionality is new in the Pike release.

Heat was the first service to be supported, and so the following will use submitting a patch to Heat using Kolla as an example.

Only source containers are supported.

Warning

Kolla dev mode is intended for OpenStack hacking or development only. Do not use this in production!

Enabling Kolla "dev mode"

To enable dev mode for all supported services, set in /etc/kolla/globals.yml:

kolla_dev_mode: true

To enable it just for heat, set:

heat_dev_mode: true

Usage

When enabled, the source repo for the service in question will be cloned under /opt/stack/ on the target node(s). This will be bind mounted into the container's virtualenv under the location expected by the service on startup.

After making code changes, simply restart the container to pick them up:

docker restart heat_api

Debugging

remote_pdb can be used to perform debugging with Kolla containers. First, make sure it is installed in the container in question:

docker exec -it -u root heat_api pip install remote_pdb

Then, set your breakpoint as follows:

from remote_pdb import RemotePdb
RemotePdb('127.0.0.1', 4444).set_trace()

Once you run the code(restart the container), pdb can be accessed using socat:

socat readline tcp:127.0.0.1:4444

Learn more information about remote_pdb.