DevAndTools/docker-postgres-backup-local
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Implement hooks with run-parts #58

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Pau Rodriguez-Estivill
2022-08-20 19:29:18 +02:00
parent 1f46aba95a
commit 67ecbb1b3e
5 changed files with 61 additions and 12 deletions
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README.md
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@@ -90,8 +90,8 @@ Most variables are the same as in the [official postgres image](https://hub.dock
| POSTGRES_USER_FILE | Alternative to POSTGRES_USER, for usage with docker secrets. |
| SCHEDULE | [Cron-schedule](http://godoc.org/github.com/robfig/cron#hdr-Predefined_schedules) specifying the interval between postgres backups. Defaults to `@daily`. |
| TZ | [POSIX TZ variable](https://www.gnu.org/software/libc/manual/html_node/TZ-Variable.html) specifying the timezone used to evaluate SCHEDULE cron (example "Europe/Paris"). |
| WEBHOOK_EXTRA_URL | Extra arguments for the webhook. |
| WEBHOOK_URL | URL to be called after a successful backup. |
| WEBHOOK_URL | URL to be called after an error or after a successful backup (POST with a JSON payload, check `hooks/00-webhook.sh` file for more info). Default disabled. |
| WEBHOOK_EXTRA_ARGS | Extra arguments for the `curl` execution in the webhook (check `hooks/00-webhook.sh` file for more info). |
#### Special Environment Variables
@@ -132,6 +132,13 @@ To do so it is using the following independent variables:
* BACKUP_KEEP_WEEKS: will remove files from the `weekly` folder that are older than its value in weeks after a new successfull backup (remember that it starts counting from the end of each week not the beggining).
* BACKUP_KEEP_MONTHS: will remove files from the `monthly` folder that are older than its value in months (of 31 days) after a new successfull backup (remember that it starts counting from the end of each month not the beggining).
### Hooks
The folder `hooks` inside the container can contain hooks/scripts to be run in differrent cases getting the exact situation as a first argument (`error`, `pre-backup` or `post-backup`).
Just create an script in that folder with execution permission so that [run-parts](https://manpages.debian.org/stable/debianutils/run-parts.8.en.html) can execute it on each state change.
Please, as an example take a look in the script already present there that implements the `WEBHOOK_URL` functionality.
### Manual Backups