computer-playbook/roles/docker-gitlab/README.md

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# Docker-GitLab Ansible Role
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## Overview
This Ansible role is designed for setting up and managing a GitLab server running in a Docker container. It automates the process of installing GitLab, configuring its environment, and managing dependencies such as a PostgreSQL database and an Nginx reverse proxy.
## Features
- **GitLab Installation**: Automatically deploys GitLab using Docker.
- **External PostgreSQL Database**: Configures GitLab to use an external PostgreSQL database.
- **Nginx Reverse Proxy Integration**: Includes tasks for setting up an Nginx reverse proxy for GitLab.
- **Customizable Configuration**: Variables and templates allow for easy customization.
## Requirements
- Docker and Docker Compose installed on the target machine.
- Ansible for automation.
## Role Variables
Variables are defined in `vars/main.yml`. Key variables include:
- `docker_compose_instance_directory`: Directory for Docker Compose instances.
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- `docker_compose_project_name`, `database_host`, `database_name`, `database_username`, `database_password`: Database configuration variables.
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## Handlers
- `recreate gitlab`: Restarts GitLab using Docker Compose when changes are detected.
## Dependencies
- `nginx-docker-reverse-proxy`: A role for setting up an Nginx reverse proxy for GitLab.
## Template Files
- `docker-compose.yml.j2`: Jinja2 template for the Docker Compose configuration.
- Additional templates for database and proxy configuration.
## Usage
Include this role in your Ansible playbooks and specify the necessary variables. Run the playbook to deploy and configure GitLab in a Docker environment.
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For a detailed walkthrough and explanation of this role, refer to the conversation at [ChatGPT Session Transcript](https://chat.openai.com/share/1b0147bf-d4de-4790-b8ed-c332aa4e3ce3).
## Further Information
- https://ralph.blog.imixs.com/2019/06/09/running-gitlab-on-docker/
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## Performance Optimation
- https://techoverflow.net/2020/04/18/how-i-reduced-gitlab-memory-consumption-in-my-docker-based-setup/