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Updated README.md to document notifications

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Rodrigo Damazio Bovendorp 2017-11-25 21:55:56 -08:00
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README.md
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@ -98,6 +98,8 @@ docker run --rm v2tec/watchtower --help
* `--debug` Enable debug mode. When this option is specified you'll see more verbose logging in the watchtower log file. * `--debug` Enable debug mode. When this option is specified you'll see more verbose logging in the watchtower log file.
* `--help` Show documentation about the supported flags. * `--help` Show documentation about the supported flags.
See below for options used to configure notifications.
## Linked Containers ## Linked Containers
Watchtower will detect if there are links between any of the running containers and ensure that things are stopped/started in a way that won't break any of the links. If an update is detected for one of the dependencies in a group of linked containers, watchtower will stop and start all of the containers in the correct order so that the application comes back up correctly. Watchtower will detect if there are links between any of the running containers and ensure that things are stopped/started in a way that won't break any of the links. If an update is detected for one of the dependencies in a group of linked containers, watchtower will stop and start all of the containers in the correct order so that the application comes back up correctly.
@ -161,3 +163,34 @@ docker run -d \
## Updating Watchtower ## Updating Watchtower
If watchtower is monitoring the same Docker daemon under which the watchtower container itself is running (i.e. if you volume-mounted */var/run/docker.sock* into the watchtower container) then it has the ability to update itself. If a new version of the *v2tec/watchtower* image is pushed to the Docker Hub, your watchtower will pull down the new image and restart itself automatically. If watchtower is monitoring the same Docker daemon under which the watchtower container itself is running (i.e. if you volume-mounted */var/run/docker.sock* into the watchtower container) then it has the ability to update itself. If a new version of the *v2tec/watchtower* image is pushed to the Docker Hub, your watchtower will pull down the new image and restart itself automatically.
## Notifications
Watchtower can send notifications when containers are updated. Notifications are sent via hooks in the logging system, [logrus](http://github.com/sirupsen/logrus).
The types of notifications to send are passed via the comma-separated option `--notifications` (or corresponding environment variable `WATCHTOWER_NOTIFICATIONS`), which has the following valid values:
* `email` to send notifications via e-mail
To receive notifications by email, the following command-line options, or their corresponding environment variables, can be set:
* `--notification-email-from` (env. `WATCHTOWER_NOTIFICATION_EMAIL_FROM`): The e-mail address from which notifications will be sent.
* `--notification-email-to` (env. `WATCHTOWER_NOTIFICATION_EMAIL_TO`): The e-mail address to which notifications will be sent.
* `--notification-email-server` (env. `WATCHTOWER_NOTIFICATION_EMAIL_SERVER`): The SMTP server to send e-mails through.
* `--notification-email-server-user` (env. `WATCHTOWER_NOTIFICATION_EMAIL_SERVER_USER`): The username to authenticate with the SMTP server with.
* `--notification-email-server-password` (env. `WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PASSWORD`): The password to authenticate with the SMTP server with.
Example:
```bash
docker run -d \
--name watchtower \
-v /var/run/docker.sock:/var/run/docker.sock \
-e WATCHTOWER_NOTIFICATIONS=email \
-e WATCHTOWER_NOTIFICATION_EMAIL_FROM=fromaddress@gmail.com \
-e WATCHTOWER_NOTIFICATION_EMAIL_TO=toaddress@gmail.com \
-e WATCHTOWER_NOTIFICATION_EMAIL_SERVER=smtp.gmail.com \
-e WATCHTOWER_NOTIFICATION_EMAIL_SERVER_USER=fromaddress@gmail.com \
-e WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PASSWORD=app_password \
v2tec/watchtower
```