Now that service uid, gid mappings are included in the backups, along
with the service data dirs, we can remove 'chown -R' for
clightning and liquidd data dirs.
Note that we used 'chown -R' only for these two services, while this
approach would have been relevant for all services with data dirs.
Use the following order of definitions for all services:
- assertions
- configuration of other services
- environment.systemPackages
- tmpfiles
- own service
- users
- secrets
Systemd's `Description` option is a misnomer (as confessed by `man systemd.unit`):
Its value is used by user-facing tools in place of the unit file name, so this option
could have been more aptly named `label` or `name`.
`Description` should only be set if the unit file name is not sufficient for naming a unit.
This is not the case for our services, except for `systemd.services.nb-netns-bridge`
whose description has been kept.
As an example how this affects users, weird journal lines like
```
nb-test systemd[1]: Starting Run clightningd...
```
are now replaced by
```
nb-test systemd[1]: Starting clightning.service...
```
- Adds clightning to netns-isolation.services
- Adds bitcoin-rpcconnect option to allow using clightning with network
namespaces
- Uses bind-addr option (defaults to localhost) as target of hidden service
- Adds different bind-addr options depending on if netns-isolation is
enabled or not.
From the clightning manpage:
autolisten=BOOL By default, we bind (and maybe announce) on IPv4 and
IPv6 interfaces if no addr, bind-addr or announce-addr options are
specified. Setting this to false disables that.
We already set bind-addr by default, so autolisten had no effect.
Therefore, this commit replaces autolisten with the more granular
announce-addr option.
For now we are Tor-only, so we only need to announce our hidden service
to accept incoming connections. In the future, we can add clearnet
connectivity with `addr` and route connections into our netns with NAT.
Remove PermissionsStartOnly for bitcoind and spark-wallet (it was never
needed there)
Give reason for PermissionsStartOnly in lightning-charge
Replace PermissionsStartOnly in clightning, electrs and liquid
This is NixOS' recommended way to setup service dirs
https://github.com/NixOS/nixpkgs/pull/56265. This commit hands off the
initial data directory creation to systemd.tmpfiles.rules. All other
preStart scripts are left intact to limit this changes' scope.
