mirror of https://github.com/vapor/docs.git
60 lines
1.7 KiB
Markdown
60 lines
1.7 KiB
Markdown
# Supervisor
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[Supervisor](http://supervisord.org) is a process control system that makes it easy to start, stop, and restart your Vapor app.
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## Install
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```sh
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sudo apt-get update
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sudo apt-get install supervisor
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```
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## Configure
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Each Vapor app on your server should have its own configuration file. For an example `Hello` project, the configuration file would be located at `/etc/supervisor/conf.d/hello.conf`
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```sh
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[program:hello]
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command=/home/vapor/hello/.build/release/Run serve --env=production
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directory=/home/vapor/hello/
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user=www-data
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stdout_logfile=/var/log/supervisor/%(program_name)-stdout.log
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stderr_logfile=/var/log/supervisor/%(program_name)-stderr.log
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```
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As specified in our configuration file the `Hello` project is located in the home folder for the user `vapor`. Make sure `directory` points to the root directory of your project where the `Config/` folder is.
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The `--env=production` flag will disable verbose logging and prioritize the `Config/production` sub folder of your configuration files.
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### Environment
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You can export variables to your Vapor app with supervisor.
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```sh
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environment=PORT=8123
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```
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Exported variables can be used in Vapor's configuration files with the `$` prefix.
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`Config/production/servers.json `
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```json
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{
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"port": "$PORT"
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}
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```
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The above config file will start a server named `my-server` on the port number exported by supervisor. This is a great way to control how Vapor starts from the supervisor config scripts. Feel free to name the server whatever you like.
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## Start
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You can now load and start your app.
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```sh
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supervisorctl reread
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supervisorctl add hello
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supervisorctl start hello
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```
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!!! note
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The `add` command may have already started your app.
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