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# Application specific configuration
This directory is **empty** on purpose in git. Content in this folder is
populated in packaging time by build/package.py and can be modified if needed
also on target server where package is installed.
## Application configuration
All application related configuration variables are defined in the
`application_configuration.yml` file in this folder. The name of the configuration
file can be altered but it must be passed to ansible run as command line
variable file nevertheless.
Example:
```
./run_playbook.sh application.yml -i application/hosts.yml -e @application/application_configuration.yml
```
## Application Helm charts
Application helm charts must be available on infra node before application playbook is executed.
That folder on infra node is specified within `app_helm_charts_infra_directory` variable.
There is a good default value for this variable and if not changed, installer will handle
Helm charts transfer from packaging up to the target infra server.
## Application specific roles
Installer supports optional custom pre and post install roles. Custom roles' code folders
are placed into this directory at packaging time and names of those folders shall be configured in
application_configuration.yml with variable `application_pre_install_role` and `application_post_install_role`.
Example:
```
application_pre_install_role: "my-pre-install-role"
```
## Inventory hosts
Ansible inventory file is least application specific but in practice example
inventory file in git ansible/inventory/hosts.yml cannot be directly used anyway
and at least ip addresses need to be changed according to target servers after
installer installation and before starting installer execution.
So it's better to place also hosts.yml to this application directory and edit it there.
That can be done either at packaging time same way as in application_configuration.yml
or after package has been installed to the install server where ansible process are run just
before launching any playbooks.
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