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kabirbaidhya
Deploy like a boss.
Installation
$ pip install boss-cli==1.0.3
Configuration
Check the configuration page.
Custom Scripts
Custom scripts are scripts/commands that could be defined directly in the config file without having to write any line of python in the fabfile.py. They're similar to the npm scripts, if you're familiar with them.
You can define the custom scripts under the scripts field in the boss.yml.
For instance:
# boss.yml
stages:
prod:
host: your-server.com
public_url: 'https://your-server.com'
branch: master
scripts:
hello: 'echo "Hello World!"'
build: npm run build
logs: pm2 logs
Boss comes out of the box with a task run which you can use to run these scripts on the remote server like this:
$ fab prod run:hello
$ fab prod run:build
$ fab prod run:logs
Deployment
1. Remote Source Deployment
This is a generic deployment preset, where the remote host also contains the project source code and the git repository. The deploy task would synchronize the remote with the latest changes of the provided branch from the origin. It then builds the project and restarts the service if needed.
This is general and language agnostic so it can be used for deploying any kind of project. You just need to specify the relevant build script to build your project in the remote and if it requires service restart then you'll need to define a reload script as well.
You'll need to set the deployment preset as remote-source in your configuration.
deployment:
preset: remote-source
Configuration
Your boss.yml file for remote source deployment would look similar to this:
project_name: my-app
project_description: 'My App'
repository_url: 'https://github.com/username/repository'
branch_url: '{repository_url}/tree/{branch}'
user: deploy_user
deployment:
preset: remote-source
base_dir: /source/my-app
stages:
prod:
host: your-server.com
public_url: 'https://your-server.com'
branch: master
scripts:
install: 'npm install'
build: 'npm run build'
start: 'pm2 start dist/myapp.js'
stop: 'pm2 stop dist/myapp.js'
reload: 'pm2 reload dist/myapp.js'
notifications:
slack:
enabled: true
endpoint: ${BOSS_SLACK_ENDPOINT}
The above configuration is specific to a Node.js project environment, but you can also deploy projects built with other languages like PHP, Python, Java etc. All you need to do is change the scripts install, build, reload.
Available tasks
You can check the available tasks for remote-source preset with fab --list.
➜ fab --list
Available commands:
build Build the application.
check Check the current remote branch and the last commit.
deploy Deploy to remote source.
prod Configures the prod server environment.
logs Tail the logs.
restart Restart the service.
run Run a custom script.
status Check the status of the service.
stop Stop the service.
sync Sync the changes on the branch with the remote (origin).
Deploy
Now to deploy the the application to the prod server that you've configured in the stages above. You can do:
➜ fab prod deploy
This would deploy the default branch master in this case. You can also provide a specific branch to deploy, as follows:
➜ fab prod deploy:branch=my-branch
2. Web Deployment
This deployment is useful for deploying the web apps (React, Angular, Vue etc) or static files to the remote server. This preset assumes the static files are served via a web server on the remote host eg: nginx, apache etc. Here, the source code is built locally and only the dist or build is uploaded and deployed to the server.
The deployment process is zero-downtime, just like capistrano.
You'll need to set the deployment preset as web in your configuration.
deployment:
preset: web
Configuration
Your boss.yml file for web deployment would look similar to this:
project_name: my-app
project_description: 'My App'
repository_url: 'https://github.com/username/repository'
branch_url: '{repository_url}/tree/{branch}'
user: deploy_user
deployment:
preset: web
build_dir: build/ # The local build directory
base_dir: /app/deployment # The remote base directory for deployment.
stages:
prod:
host: your-server.com
public_url: 'https://your-server.com'
scripts:
install: 'npm install'
build: 'npm run build'
notifications:
slack:
enabled: true
endpoint: ${BOSS_SLACK_ENDPOINT}
The above configuration would work for any kind of web projects as long as it generates the build in static files (HTML, CSS, JS, media) that could be served via a web server.
You can define two scripts install and build in your boss.yml, to install project dependencies and build the source respectively. For instance: if you've created your application using create-react-app, you can set these to npm install and npm run build as shown in above config.
You also have to set the location of the output directory for the build script as deployment.build_dir. In our case, this would be the build/ directory.
Available Tasks
You can check the available tasks for this preset with fab --list.
➜ fab --list
Available commands:
build Build the code locally.
buildinfo Print the build information.
builds Display the build history.
deploy Zero-Downtime deployment for the web.
info Print the build information.
logs Tail the logs.
rollback Zero-Downtime deployment rollback for the web.
run Run a custom script.
setup Setup remote host for deployment.
prod Configures the prod server environment.
Remote Setup
For the first time, you can configure the remote host for deployment using the setup task.
➜ fab prod setup
This will create necessary files and directories on the remote under the provided base_dir path. In our case the base directory will be /app/deployment.
Once, the setup task completes you should see a message like this:
Remote is setup and is ready for deployment.
Deployed build will point to /app/deployment/current.
For serving the latest build, please set your web server document root to /app/deployment/current.
Now you'll need to set your web server document root on the remote host to the current symlink created under the base_dir path. This symlink will point to the latest build when you deploy your app.
Web Server Config
If you're using a web server like nginx, you can set the document root like this:
# Sample nginx Configuration.
server {
listen 80;
listen [::]:80;
# This is the symlink that points to the build that is deployed.
root /app/deployment/current;
index index.html;
...
}
Deploy
You can use the deploy task to deploy the app to the remote server.
Here, first the deploy task would trigger the install and build scripts to build the project locally, after which the built directory configured in deployment.build_dir would be tar-zipped and uploaded to the remote host via SSH.
So, to deploy current local source code to prod server you should do the following:
➜ fab prod deploy
If you're using git in your project, you need to make sure you did checkout to the branch you want to deploy and is up to date. Like this,
# Checkout to the right branch and deploy
➜ git checkout master
➜ fab prod deploy
3. Node.js Deployment
Node.js Project Deployment. More information, examples and documentation coming soon :).
Inspiration
Special Thanks
Special Thanks to Shirish Shikhrakar for the logo.
Contributing
All kinds of contributions are welcome. Read our contributing guide to learn about our development process, how to propose PRs, report bugs and suggest improvements.
Change Log
Check the CHANGELOG for full release history.
License
Licensed under The MIT License.
kabirbaidhya