From 3700d581b3037c5a33f6dca628314b9a6cb19bed Mon Sep 17 00:00:00 2001
From: DoTheEvolution <DoTheEvo@gmail.com>
Date: Sun, 10 Jan 2021 21:59:37 +0100
Subject: [PATCH] update

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+# Ofelia in docker
+
+###### guide-by-example
+
+# Purpose
+
+Scheduling jobs that will be run in docker containers.
+
+* [Github](https://github.com/mcuadros/ofelia)
+* [DockerHub image used](https://hub.docker.com/r/mcuadros/ofelia/)
+
+Ofelia is a simple scheduler for docker containers, replacing cron.</br>
+Written in go, its binary is running in the background as a daemon,
+executing scheduled tasks as set in a simple config file.
+
+
+# Files and directory structure
+
+```
+/home/
+└── ~/
+    └── docker/
+        └── ofelia/
+            ├── docker-compose.yml
+            └── config.ini
+```
+
+* `docker-compose.yml` - a docker compose file, telling docker how to run the container
+* `config.ini` - ofelia's configuration file bind mounted in to the container
+
+All files need to be provided.
+
+# docker-compose
+
+`docker-compose.yml`
+```yml
+version: "3"
+services:
+
+  ofelia:
+    image: mcuadros/ofelia
+    container_name: ofelia
+    hostname: ofelia
+    restart: unless-stopped
+    volumes:
+      - ./config.ini:/etc/ofelia/config.ini:ro
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+```
+
+# Config
+
+config.ini contains scheduled jobs.</br>
+There are several [types](https://github.com/mcuadros/ofelia/blob/master/docs/jobs.md),
+but here is just the basic most common use: *job-exec*</br>
+which executes command inside an already running container.
+
+`config.ini`
+```ini
+[job-exec "test1"]
+schedule = @every 5m
+container = phpipam_phpipam-web_1
+command = touch /tmp/bla
+
+[job-exec "test2"]
+schedule = @every 1h
+container = phpipam_phpipam-mariadb_1
+command = touch /tmp/bla
+
+[job-exec "test3"]
+schedule = @every 1h30m10s
+container = phpipam_phpipam-cron_1
+command = touch /tmp/bla
+```
+
+# Logging
+
+![logo](https://i.imgur.com/5SgWE0I.png)
+
+Docker containers log shows which jobs are active and when they were executed.
+
+But Ofelia has several build in
+[logging options.](https://github.com/mcuadros/ofelia#logging)
+
+#### email 
+
+Unfortunetly seems `[global]` section, where email settings would be set once
+and then enabled per job is not working.
+So either the settings would go
+in to `[global]` and be set for every single job, or every job that requires
+email logging will have to have all the email settings writen out in full.
+
+`config.ini`
+```ini
+[job-exec "test1"]
+schedule = @every 5m
+container = phpipam_phpipam-web_1
+command = touch /tmp/zla
+smtp-user = apikey
+smtp-password = SG.***************************
+smtp-host = smtp.sendgrid.net
+smtp-port = 465
+mail-only-on-error = false
+email-to = whoever@example.com
+email-from = test@example.com
+
+[job-exec "test2"]
+schedule = @every 2m
+container = phpipam_phpipam-mariadb_1
+command = touch /tmp/zla
+
+```
+
+#### save-folder
+
+Saves result of every job execution in to a file.
+
+By defining `save-folder` path for the job.</br>
+The path used should be bind mounted from the host,
+for persistence of the data and easier access.
+
+`docker-compose.yml`
+```yml
+version: "3"
+services:
+
+  ofelia:
+    image: mcuadros/ofelia
+    container_name: ofelia
+    hostname: ofelia
+    restart: unless-stopped
+    volumes:
+      - ./config.ini:/etc/ofelia/config.ini:ro
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - ./logs:/tmp/logs
+```
+
+`config.ini`
+```ini
+[job-exec "test1"]
+schedule = @every 5m
+container = nginx
+command = touch /tmp/example
+save-folder = /tmp/logs
+```
+
+# Update
+
+[Watchtower](https://github.com/DoTheEvo/selfhosted-apps-docker/tree/master/watchtower)
+updates the image automatically.
+
+Manual image update:
+
+- `docker-compose pull`</br>
+- `docker-compose up -d`</br>
+- `docker image prune`
+
+# Backup and restore
+
+#### Backup
+
+Using [borg](https://github.com/DoTheEvo/selfhosted-apps-docker/tree/master/borg_backup)
+that makes daily snapshot of the entire directory.
+  
+#### Restore
+
+* down the homer container `docker-compose down`</br>
+* delete the entire homer directory</br>
+* from the backup copy back the homer directory</br>
+* start the container `docker-compose up -d`