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update data migration instructions

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Ryan Petrello 2020-01-15 09:03:36 -05:00
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DATA_MIGRATION.md
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## Introduction
Upgrades using Django migrations are not expected to work in AWX. As a result, to upgrade to a new version, it is necessary to export resources from the old AWX node and import them into a freshly-installed node with the new version. The recommended way to do this is to use the tower-cli send/receive feature.
Early versions of AWX did not support seamless upgrades between major versions and required the use of a backup and restore tool to perform upgrades.
This tool does __not__ support export/import of the following:
* Logs/history
* Credential passwords
* LDAP/AWX config
Users who wish to upgrade modern AWX installations should follow the instructions at:
### Install & Configure Tower-CLI
In terminal, pip install tower-cli (if you do not have pip already, install [here](https://pip.pypa.io/en/stable/installing/)):
```
$ pip install --upgrade ansible-tower-cli
```
The AWX host URL, user, and password must be set for the AWX instance to be exported:
```
$ tower-cli config host http://<old-awx-host.example.com>
$ tower-cli config username <user>
$ tower-cli config password <pass>
```
For more information on installing tower-cli look [here](http://tower-cli.readthedocs.io/en/latest/quickstart.html).
### Export Resources
Export all objects
```$ tower-cli receive --all > assets.json```
### Teardown Old AWX
Clean up remnants of the old AWX install:
```docker rm -f $(docker ps -aq)``` # remove all old awx containers
```make clean-ui``` # clean up ui artifacts
### Install New AWX version
If you are installing AWX as a dev container, pull down the latest code or version you want from GitHub, build
the image locally, then start the container
```
git pull # retrieve latest AWX changes from repository
make docker-compose-build # build AWX image
make docker-compose # run container
```
For other install methods, refer to the [Install.md](https://github.com/ansible/awx/blob/devel/INSTALL.md).
### Import Resources
Configure tower-cli for your new AWX host as shown earlier. Import from a JSON file named assets.json
```
$ tower-cli config host http://<new-awx-host.example.com>
$ tower-cli config username <user>
$ tower-cli config password <pass>
$ tower-cli send assets.json
```
--------------------------------------------------------------------------------
## Additional Info
If you have two running AWX hosts, it is possible to copy all assets from one instance to another
```$ tower-cli receive --tower-host old-awx-host.example.com --all | tower-cli send --tower-host new-awx-host.example.com```
#### More Granular Exports:
Export all credentials
```$ tower-cli receive --credential all > credentials.json```
> Note: This exports the credentials with blank strings for passwords and secrets
Export a credential named "My Credential"
```$ tower-cli receive --credential "My Credential"```
#### More Granular Imports:
You could import anything except an organization defined in a JSON file named assets.json
```$ tower-cli send --prevent organization assets.json```
https://github.com/ansible/awx/blob/devel/INSTALL.md#upgrading-from-previous-versions