.github/workflows | ||
examples/homeassistant | ||
modules | ||
test/modules | ||
.gitignore | ||
flake.lock | ||
flake.nix | ||
LICENSE | ||
README.md |
Self Host Blocks
Building blocks for self-hosting with battery included.
SHB's (Self Host Blocks) goal is to provide a lower entry-bar for self-hosting. I intend to achieve this by providing opinionated building blocks fitting together to self-host a wide range of services. Also, the design will be extendable to allow users to add services not provided by SHB.
For each service, I intend to provide turn-key Nix options to setup:
- access through a subdomain,
- HTTPS access,
- backup,
- single sign-on,
- LDAP user management,
- and metrics and logs monitoring and alerting.
TOC
- Supported Features
- Usage
- Examples
- Add SSL configuration
- Add LDAP and Authelia services
- Deploy the full Grafana, Prometheus and Loki suite
- Deploy a Nextcloud Instance
- Enable verbose Nginx logging
- Deploy an hledger Instance with LDAP and SSO support
- Deploy a Jellyfin instance with LDAP and SSO support
- Deploy a Home Assistant instance with LDAP support
- Set up network tunnel with VPN and Proxy
- Tips
- TODOs
- Links that helped
- License
Supported Features
Currently supported services and features are:
- Authelia as SSO provider.
- Export metrics to Prometheus.
- LDAP server through lldap, it provides a nice Web UI.
- Administrative UI only accessible from local network.
- Backup with Restic or BorgBackup
- UI for backups.
- Export metrics to Prometheus.
- Alert when backups fail or are not done on time.
- Reverse Proxy with Nginx.
- Export metrics to Prometheus.
- Log slow requests.
- SSL support.
- Backup support.
- Monitoring through Prometheus and Grafana.
- Export systemd services status.
- Provide out of the box dashboards and alerts for common tasks.
- LDAP auth.
- SSO auth.
- Vaultwarden
- UI only accessible for
vaultwarden_user
LDAP group. /admin
only accessible forvaultwarden_admin
LDAP group.- [WIP] True SSO support, see dani-garcia/vaultwarden/issues/246. For now, Authelia protects access to the UI but you need to login afterwards to Vaultwarden. So there are two login required.
- UI only accessible for
- Nextcloud
- LDAP auth, unfortunately we need to configure this manually.
- Declarative setup.
- SSO auth.
- Backup support.
- Optional tracing debug.
- Export traces to Prometheus.
- Export metrics to Prometheus.
- LDAP auth, unfortunately we need to configure this manually.
- Home Assistant.
- Export metrics to Prometheus.
- LDAP auth through
homeassistant_user
LDAP group. - SSO auth.
- Backup support.
- Jellyfin
- Export metrics to Prometheus.
- LDAP auth through
jellyfin_user
andjellyfin_admin
LDAP groups. - SSO auth.
- Backup support.
- Hledger
- Export metrics to Prometheus.
- LDAP auth through
hledger_user
LDAP group. - SSO auth.
- Backup support.
- Database Postgres
- Slow log monitoring.
- Export metrics to Prometheus.
- VPN tunnel
- Arr suite
- SSO auth (one account for all users).
- VPN support.
- Mount webdav folders
- Gitea to deploy
- Scrutiny to monitor hard drives health
- Export metrics to Prometheus.
Usage
The top-level flake.nix
just outputs a nixos module that gathers all other modules from the modules/
directory.
Some provided modules are low-level and some are high-level that re-use those low-level ones. For example, the nextcloud module re-uses the backup and nginx ones.
You want to use this repo as a flake input to your own repo. The inputs
field of your flake.nix
file in your repo should look like so:
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
sops-nix.url = "github:Mic92/sops-nix";
selfhostblocks.url = "github:ibizaman/selfhostblocks";
selfhostblocks.inputs.nixpkgs.follows = "nixpkgs";
selfhostblocks.inputs.sops-nix.follows = "sops-nix";
};
sops-nix
is used to setup passwords and secrets. Currently selfhostblocks
has a strong
dependency on it but I'm working on removing that so you could use any secret provider.
The snippet above makes selfhostblocks
' inputs follow yours. This is not maintainable though
because options that selfhostblocks
rely on can change or disappear and you have no control on
that. Later, I intend to make selfhostblocks
provide its own nixpkgs
input and update it myself
through CI.
How you actually deploy using selfhostblocks depends on what system you choose. If you use
colmena, this is what your outputs
field could look like:
outputs = inputs@{ self, nixpkgs, ... }: {
colmena = {
meta = {
nixpkgs = import inputs.nixpkgs {
system = "x86_64-linux";
};
specialArgs = inputs;
};
myserver = import ./machines/myserver.nix;
};
}
Now, what goes inside this ./machines/myserver.nix
file? First, import selfhostblocks
and
sops-nix
:
imports = [
selfhostblocks.nixosModules.x86_64-linux.default
sops-nix.nixosModules.default
]
For how to deploy services, check the examples below.
Examples
I plan to have documentation for all options provided by selfhostblocks and more examples. For now, I have a few examples:
Add SSL configuration
This is pretty much a prerequisite for all services.
shb.ssl = {
enable = true;
domain = "example.com";
adminEmail = "me@example.com";
sopsFile = ./secrets/linode.yaml;
dnsProvider = "linode";
};
The configuration above assumes you own the example.com
domain and the DNS is managed by Linode.
The sops
file must be in the following format:
acme: |-
LINODE_HTTP_TIMEOUT=10
LINODE_POLLING_INTERVAL=10
LINODE_PROPAGATION_TIMEOUT=240
LINODE_TOKEN=XYZ...
For now, linode is the only supported DNS provider as it's the one I'm using. I intend to make this
module more generic so you can easily use another provider not supported by selfhostblocks
. You
can skip setting the shb.ssl
options and roll your own. Feel free to look at the
ssl.nix
for inspiration.
Add LDAP and Authelia services
These too are prerequisites for other services. Not all services support LDAP and SSO just yet, but I'm working on that.
shb.ldap = {
enable = true;
domain = "example.com";
subdomain = "ldap";
ldapPort = 3890;
httpPort = 17170;
dcdomain = "dc=example,dc=com";
sopsFile = ./secrets/ldap.yaml;
localNetworkIPRange = "192.168.1.0/24";
};
shb.authelia = {
enable = true;
domain = "example.com";
subdomain = "authelia";
ldapEndpoint = "ldap://127.0.0.1:${builtins.toString config.shb.ldap.ldapPort}";
dcdomain = config.shb.ldap.dcdomain;
smtpHost = "smtp.mailgun.org";
smtpPort = 587;
smtpUsername = "postmaster@mg.example.com";
secrets = {
jwtSecretFile = config.sops.secrets."authelia/jwt_secret".path;
ldapAdminPasswordFile = config.sops.secrets."authelia/ldap_admin_password".path;
sessionSecretFile = config.sops.secrets."authelia/session_secret".path;
notifierSMTPPasswordFile = config.sops.secrets."authelia/smtp_password".path;
storageEncryptionKeyFile = config.sops.secrets."authelia/storage_encryption_key".path;
identityProvidersOIDCHMACSecretFile = config.sops.secrets."authelia/hmac_secret".path;
identityProvidersOIDCIssuerPrivateKeyFile = config.sops.secrets."authelia/private_key".path;
};
};
sops.secrets."authelia/jwt_secret" = {
sopsFile = ./secrets/authelia.yaml;
mode = "0400";
owner = config.shb.authelia.autheliaUser;
restartUnits = [ "authelia.service" ];
};
sops.secrets."authelia/ldap_admin_password" = {
sopsFile = ./secrets/authelia.yaml;
mode = "0400";
owner = config.shb.authelia.autheliaUser;
restartUnits = [ "authelia.service" ];
};
sops.secrets."authelia/session_secret" = {
sopsFile = ./secrets/authelia.yaml;
mode = "0400";
owner = config.shb.authelia.autheliaUser;
restartUnits = [ "authelia.service" ];
};
sops.secrets."authelia/smtp_password" = {
sopsFile = ./secrets/authelia.yaml;
mode = "0400";
owner = config.shb.authelia.autheliaUser;
restartUnits = [ "authelia.service" ];
};
sops.secrets."authelia/storage_encryption_key" = {
sopsFile = ./secrets/authelia.yaml;
mode = "0400";
owner = config.shb.authelia.autheliaUser;
restartUnits = [ "authelia.service" ];
};
sops.secrets."authelia/hmac_secret" = {
sopsFile = ./secrets/authelia.yaml;
mode = "0400";
owner = config.shb.authelia.autheliaUser;
restartUnits = [ "authelia.service" ];
};
sops.secrets."authelia/private_key" = {
sopsFile = ./secrets/authelia.yaml;
mode = "0400";
owner = config.shb.authelia.autheliaUser;
restartUnits = [ "authelia.service" ];
};
This sets up lldap under https://ldap.example.com
and authelia under https://authelia.example.com
.
The lldap
sops file must be in the following format:
lldap:
user_password: XXX...
jwt_secret: YYY...
You can format the Authelia
sops file as you wish since you can give the path to every secret independently. For completeness, here's the format expected by the snippet above:
authelia:
ldap_admin_password: AAA...
smtp_password: BBB...
jwt_secret: CCC...
storage_encryption_key: DDD...
session_secret: EEE...
storage_encryption_key: FFF...
hmac_secret: GGG...
private_key: |
-----BEGIN PRIVATE KEY-----
MII...MDQ=
-----END PRIVATE KEY-----
Add backup to LDAP:
shb.backup.instances.lldap = {
# Can also use "borgmatic".
backend = "restic";
keySopsFile = ./secrets/backup.yaml;
# Backs up to 2 repositories.
repositories = [
"/srv/backup/restic/nextcloud"
"s3:s3.us-west-000.backblazeb2.com/myserver-backup/nextcloud"
];
retention = {
keep_within = "1d";
keep_hourly = 24;
keep_daily = 7;
keep_weekly = 4;
keep_monthly = 6;
};
consistency = {
repository = "2 weeks";
archives = "1 month";
};
environmentFile = true; # Needed for the s3 repository
}
This will backup the ldap users and groups to two different repositories. It assumes you have a backblaze account.
The backup sops
file format is:
restic:
passphrases:
lldap: XYZ...
environmentfiles:
lldap: |-
AWS_ACCESS_KEY_ID=XXX...
AWS_SECRET_ACCESS_KEY=YYY...
The AWS keys are those provided by Backblaze.
See the ldap.nix
and authelia.nix
modules for more info.
Deploy the full Grafana, Prometheus and Loki suite
This is not a prerequisite for anything and could be enabled just for debugging.
shb.monitoring = {
enable = true;
subdomain = "grafana";
inherit domain;
};
With that, Grafana, Prometheus, Loki and Promtail are setup! You can access Grafana
at
grafana.example.com
.
A few Prometheus metrics scrapers are setup automatically:
- node - cpu, memory, disk I/O, network I/O and a few others of the computer
- smartctl - hard drive health
- prometheus_internal - scraping jobs health
- nginx
- dnsmasq (if the service is enabled)
The following Loki logs scraper is setup automatically:
- systemd journal
I intend to provide more options so that you could for example tweak data retention.
Also, since all logs are now stored in Loki, you can probably reduce the systemd journal retention time with:
# See https://www.freedesktop.org/software/systemd/man/journald.conf.html#SystemMaxUse=
services.journald.extraConfig = ''
SystemMaxUse=2G
SystemKeepFree=4G
SystemMaxFileSize=100M
MaxFileSec=day
'';
Deploy a Nextcloud Instance
shb.nextcloud = {
enable = true;
domain = "example.com";
subdomain = "nextcloud";
sopsFile = ./secrets/nextcloud.yaml;
localNetworkIPRange = "192.168.1.0/24";
debug = false;
};
# Only needed if you want to override some default settings.
services.nextcloud = {
datadir = "/srv/nextcloud";
poolSettings = {
"pm" = "dynamic";
"pm.max_children" = 120;
"pm.start_servers" = 12;
"pm.min_spare_servers" = 6;
"pm.max_spare_servers" = 18;
};
};
# Backup the Nextcloud data.
shb.backup.instances.nextcloud = # Same as for the Authelia one above;
# For onlyoffice
nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (pkgs.lib.getName pkg) [
"corefonts"
];
The snippet above sets up:
- The nginx reverse proxy to listen on requests for the
nextcloud.example.com
domain. - An onlyoffice instance listening at
oo.example.com
that only listens on the local nextwork; you still need to setup manually the onlyoffice plugin in Nextcloud. - All the required databases and secrets.
The sops file format is:
nextcloud:
adminpass: XXX...
onlyoffice:
jwt_secret: YYY...
See the nextcloud-server.nix
module for more info.
You can enable tracing with:
shb.nextcloud.debug = true;
See my blog post for how to look at the traces.
Enable verbose Nginx logging
In case you need more verbose logging to investigate an issue:
shb.nginx.accessLog = true;
shb.nginx.debugLog = true;
See the nginx.nix
module to see the effect of those options.
Deploy an hledger Instance with LDAP and SSO support
shb.hledger = {
enable = true;
subdomain = "hledger";
domain = "example.com";
oidcEndpoint = "https://authelia.example.com";
localNetworkIPRange = "192.168.1.0/24";
};
shb.backup.instances.hledger = # Same as the examples above
This will setup:
- The nginx reverse proxy to listen on requests for the
hledger.example.com
domain. - Backup of everything.
- Only allow users of the
hledger_user
group to be able to login. - All the required databases and secrets.
See hledger.nix
module for more details.
Deploy a Jellyfin instance with LDAP and SSO support
shb.jellyfin = {
enable = true;
domain = "example.com";
subdomain = "jellyfin";
sopsFile = ./secrets/jellyfin.yaml;
ldapHost = "127.0.0.1";
ldapPort = 3890;
dcdomain = config.shb.ldap.dcdomain;
oidcEndpoint = "https://${config.shb.authelia.subdomain}.${config.shb.authelia.domain}";
oidcClientID = "jellyfin";
oidcUserGroup = "jellyfin_user";
oidcAdminUserGroup = "jellyfin_admin";
};
shb.backup.instances.jellyfin = # Same as the examples above
This sets up, as usual:
- The nginx reverse proxy to listen on requests for the
jellyfin.example.com
domain. - Backup of everything.
- Only allow users of the
jellyfin_user
orjellyfin_admin
ldap group to be able to login. - All the required databases and secrets.
The sops file format is:
jellyfin:
ldap_password: XXX...
sso_secret: YYY...
Although the configuration of the LDAP and
SSO plugins is done declaratively in the Jellyfin
preStart
step, they still need to be installed manually at the moment.
See jellyfin.nix
module for more details.
Deploy a Home Assistant instance with LDAP support
SSO support is WIP.
shb.home-assistant = {
enable = true;
subdomain = "ha";
inherit domain;
ldapEndpoint = "http://127.0.0.1:${builtins.toString config.shb.ldap.httpPort}";
backupCfg = # Same as the examples above
sopsFile = ./secrets/homeassistant.yaml;
};
services.home-assistant = {
extraComponents = [
"backup"
"esphome"
"jellyfin"
"kodi"
"wyoming"
"zha"
];
};
services.wyoming.piper.servers = {
"fr" = {
enable = true;
voice = "fr-siwis-medium";
uri = "tcp://0.0.0.0:10200";
speaker = 0;
};
};
services.wyoming.faster-whisper.servers = {
"tiny-fr" = {
enable = true;
model = "medium-int8";
language = "fr";
uri = "tcp://0.0.0.0:10300";
device = "cpu";
};
};
This sets up everything needed to have a Home Assistant instance available under ha.example.com
.
It also shows how to have a piper
and whisper
server for respectively text to speech and speech
to text. The integrations must still be setup in the web UI.
The sops
file must be in the following format:
home-assistant: |
country: "US"
latitude_home: "0.01234567890123"
longitude_home: "-0.01234567890123"
Set up network tunnel with VPN and Proxy
shb.vpn.nordvpnus = {
enable = true;
# Only "nordvpn" supported for now.
provider = "nordvpn";
dev = "tun1";
# Must be unique per VPN instance.
routingNumber = 10;
# Change to the one you want to connect to
remoteServerIP = "1.2.3.4";
sopsFile = ./secrets/vpn.yaml;
proxyPort = 12000;
};
This sets up a tunnel interface tun1
that connects to the VPN provider, here NordVPN. Also, if the
proxyPort
option is not null, this will spin up a tinyproxy
instance that listens on the given
port and redirects all traffic through that VPN.
$ curl 'https://api.ipify.org?format=json'
{"ip":"107.21.107.115"}
$ curl --interface tun1 'https://api.ipify.org?format=json'
{"ip":"46.12.123.113"}
$ curl --proxy 127.0.0.1:12000 'https://api.ipify.org?format=json'
{"ip":"46.12.123.113"}
Tips
Run tests
$ nix flake check
Deploy using colmena
$ nix run nixpkgs#colmena -- apply
Use a local version of selfhostblocks
This works with any flake input you have. Either, change the .url
field directly in you flake.nix
:
selfhostblocks.url = "/home/me/projects/selfhostblocks";
Or override on the command line:
$ nix run nixpkgs#colmena --override-input selfhostblocks ../selfhostblocks -- apply
Diff changes
First, you must know what to compare. You need to know the path to the nix store of what is already deployed and to what you will deploy.
What is deployed
To know what is deployed, either just stash the changes you made and run build
:
$ nix run nixpkgs#colmena -- build
...
Built "/nix/store/yyw9rgn8v5jrn4657vwpg01ydq0hazgx-nixos-system-baryum-23.11pre-git"
Or ask the target machine:
$ nix run nixpkgs#colmena -- exec -v readlink -f /run/current-system
baryum | /nix/store/77n1hwhgmr9z0x3gs8z2g6cfx8gkr4nm-nixos-system-baryum-23.11pre-git
What will get deployed
Assuming you made some changes, then instead of deploying with apply
, just build
:
$ nix run nixpkgs#colmena -- build
...
Built "/nix/store/16n1klx5cxkjpqhrdf0k12npx3vn5042-nixos-system-baryum-23.11pre-git"
Get the full diff
With nix-diff
:
$ nix run nixpkgs#nix-diff -- \
/nix/store/yyw9rgn8v5jrn4657vwpg01ydq0hazgx-nixos-system-baryum-23.11pre-git \
/nix/store/16n1klx5cxkjpqhrdf0k12npx3vn5042-nixos-system-baryum-23.11pre-git \
--color always | less
Get version bumps
A nice summary of version changes can be produced with:
$ nix run nixpkgs#nvd -- diff \
/nix/store/yyw9rgn8v5jrn4657vwpg01ydq0hazgx-nixos-system-baryum-23.11pre-git \
/nix/store/16n1klx5cxkjpqhrdf0k12npx3vn5042-nixos-system-baryum-23.11pre-git \
Generate random secret
$ nix run nixpkgs#openssl -- rand -hex 64
TODOs
- Add examples that sets up services in a VM.
- Do not depend on sops.
- Add more options to avoid hardcoding stuff.
- Make sure nginx gets reloaded when SSL certs gets updated.
- Better backup story by taking optional LVM or ZFS snapshot before backing up.
- Many more tests.
- Tests deploying to real nodes.
- DNS must be more configurable.
Links that helped
While creating an XML config generator for Radarr:
- https://stackoverflow.com/questions/4906977/how-can-i-access-environment-variables-in-python
- https://stackoverflow.com/questions/7771011/how-can-i-parse-read-and-use-json-in-python
- https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-support/writers/scripts.nix
- https://stackoverflow.com/questions/43837691/how-to-package-a-single-python-script-with-nix
- https://ryantm.github.io/nixpkgs/languages-frameworks/python/#python
- https://ryantm.github.io/nixpkgs/hooks/python/#setup-hook-python
- https://ryantm.github.io/nixpkgs/builders/trivial-builders/
- https://discourse.nixos.org/t/basic-flake-run-existing-python-bash-script/19886
- https://docs.python.org/3/tutorial/inputoutput.html
- https://pypi.org/project/json2xml/
- https://www.geeksforgeeks.org/serialize-python-dictionary-to-xml/
- https://nixos.org/manual/nix/stable/language/builtins.html#builtins-toXML
- https://github.com/NixOS/nixpkgs/blob/master/pkgs/pkgs-lib/formats.nix
License
I'm following the Nextcloud license which is AGPLv3. See this article from the FSF that explains what this license adds to the GPL one.