# README

system-helpers is a collection of helper systemd services, systemd timers and
shell scripts for common configuration and tasks like 

* checking if systemd services and timers are running
* borgmatic backup
* restic backup
* checking if docker containers are running
* batch docker-compose upgrades
* docker housekeeping for removing unused docker containers, volumes and images
* dynamic dns update
* update check for pacman
* memory and disk checks

Provided systemd services mostly support mail notifications if they have failed
via systemd_failure_notify.

See `/usr/share/doc/system-helpers` for example configurations which should 
be copied inside $HOME or /etc depending on the helper script.

## Installation

1. Build a `pacman` package for ArchLinux via `makepkg -csi` inside the `_pkg/` folder
2. Alternatively, use `./sync` from the git clone and pick an action which should be self-explaining
3. Use the custom provided ArchLinux repository hosted at `aur.myservermanager.com`

```shell
[repo-aur-myservermanager-com]
SigLevel = Never
Server = https://aur.myservermanager.com
```

## Usage

Services and scripts don't depend on each other but have hints that they can be 
combined (out-commented line in service files for `systemd_failure_notify@.service` 
for example).

Examples are given inside `usr/share/doc/system-helpers`.

## FAQ

### User cannot use network-online.target

By default, no user unit can depend on system events like `network-online.target`. 
To enable this, you need to link the proper `.target` which you like to use inside
the user service before.

```shell
systemctl --user link /usr/lib/systemd/system/network-online.target
```

This would make `network-online.target` available after a _reboot_ to the user who issued the command.

### `network-online.target` doesn't recognize DNS correctly

If you like to set `Persistent=true`, then you should probably equip the related `.service` file with a `ExecStartPre=/bin/bash -c 'until host captiveportal.myservermanager.com; do sleep 1; done'` or any domain you think is 100% reachable.