Table of Contents
Defined in /modules/blocks/open-webui.nix,
found in the selfhostblocks.nixosModules.open-webui module.
See the manual for how to import the module in your code.
This service sets up Open WebUI which provides a frontend to various LLMs.
Telemetry disabled.
Skip onboarding.
Declarative LDAP Configuration. Needed LDAP groups are created automatically.
Declarative SSO Configuration. When SSO is enabled, login with user and password is disabled. Registration is enabled through SSO.
Access through subdomain using reverse proxy.
Access through HTTPS using reverse proxy.
Backup through the backup block.
The following snippet assumes a few blocks have been setup already:
the secrets block with SOPS,
the shb.ssl block,
the shb.lldap block.
the shb.authelia block.
{
shb.open-webui = {
enable = true;
domain = "example.com";
subdomain = "open-webui";
ssl = config.shb.certs.certs.letsencrypt.${domain};
sso = {
enable = true;
authEndpoint = "https://${config.shb.authelia.subdomain}.${config.shb.authelia.domain}";
sharedSecret.result = config.shb.sops.secret.oidcSecret.result;
sharedSecretForAuthelia.result = config.shb.sops.secret.oidcAutheliaSecret.result;
};
};
shb.sops.secret.oidcSecret.request = config.shb.open-webui.sso.sharedSecret.request;
shb.sops.secret.oidcAutheliaSecret.request = config.shb.open-webui.sso.sharedSecretForAuthelia.request;
}
Secrets can be randomly generated with nix run nixpkgs#openssl -- rand -hex 64.
Assuming ollama is enabled, it will be available on port config.services.ollama.port.
The following snippet sets up acceleration using an AMD (i)GPU and loads some models.
{
services.ollama = {
enable = true;
# https://wiki.nixos.org/wiki/Ollama#AMD_GPU_with_open_source_driver
acceleration = "rocm";
# https://ollama.com/library
loadModels = [
"deepseek-r1:1.5b"
"llama3.2:3b"
"llava:7b"
"mxbai-embed-large:335m"
"nomic-embed-text:v1.5"
];
};
}
Integrating with the ollama service is done with:
{
services.open-webui = {
environment.OLLAMA_BASE_URL = "http://127.0.0.1:${toString config.services.ollama.port}";
};
}
Notice we’re using the upstream service here services.open-webui, not shb.open-webui.
Backing up Open-Webui using the Restic block is done like so:
shb.restic.instances."open-webui" = {
request = config.shb.open-webui.backup;
settings = {
enable = true;
};
};
The name "open-webui" in the instances can be anything.
The config.shb.open-webui.backup option provides what directories to backup.
You can define any number of Restic instances to backup Open WebUI multiple times.
shb.open-webui.enable
Whether to enable the Open-WebUI service.
Type: boolean
Default:
false
Example:
true
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.backup
Backup state directory.
Type: submodule
Default:
{ }
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.backup.request
Request part of the backup contract.
Options set by the requester module enforcing how to backup files.
Type: submodule
Default: { user = open-webui; sourceDirectories = [ config.services.open-webui.stateDir ]; excludePatterns = [ ]; hooks.beforeBackup = [ ]; hooks.afterBackup = [ ]; };
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.backup.request.excludePatterns
File patterns to exclude.
Type: list of string
Default:
[ ]
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.backup.request.hooks
Hooks to run around the backup.
Type: submodule
Default:
{ }
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.backup.request.hooks.afterBackup
Hooks to run after backup.
Type: list of string
Default:
[ ]
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.backup.request.hooks.beforeBackup
Hooks to run before backup.
Type: list of string
Default:
[ ]
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.backup.request.sourceDirectories
Directories to backup.
Type: non-empty (list of string)
Default: [ config.services.open-webui.stateDir ]
Example:
"/var/lib/vaultwarden"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.backup.request.user
Unix user doing the backups.
Type: string
Default:
"open-webui"
Example:
"vaultwarden"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.backup.result
Result part of the backup contract.
Options set by the provider module that indicates the name of the backup and restor scripts.
Type: submodule
Default:
""
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.backup.result.backupService
Name of service backing up the database.
This script can be ran manually to backup the database:
$ systemctl start backup.service
Type: string
Default:
"backup.service"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.backup.result.restoreScript
Name of script that can restore the database. One can then list snapshots with:
$ restore snapshots
And restore the database with:
$ restore restore latest
Type: string
Default:
"restore"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.domain
domain under which Open-WebUI will be served.
Type: string
Example:
"mydomain.com"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.environment
Extra environment variables. See https://docs.openwebui.com/getting-started/env-configuration
Type: attribute set of string
Example:
''
{
WEBUI_NAME = "SelfHostBlocks";
OLLAMA_BASE_URL = "http://127.0.0.1:''${toString config.services.ollama.port}";
RAG_EMBEDDING_MODEL = "nomic-embed-text:v1.5";
ENABLE_OPENAI_API = "True";
OPENAI_API_BASE_URL = "http://127.0.0.1:''${toString config.services.llama-cpp.port}";
ENABLE_WEB_SEARCH = "True";
RAG_EMBEDDING_ENGINE = "openai";
}
''
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.ldap
Setup LDAP integration.
Type: submodule
Default:
{ }
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.ldap.adminGroup
Group users must belong to to have administrator privileges.
Type: string
Default:
"open-webui_admin"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.ldap.userGroup
Group users must belong to to be able to login.
Type: string
Default:
"open-webui_user"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.port
Port Open-WebUI listens to incoming requests.
Type: 16 bit unsigned integer; between 0 and 65535 (both inclusive)
Default:
12444
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.ssl
Path to SSL files
Type: null or (anything)
Default:
null
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.ssl.paths
Paths where the files for the certificate will be located.
This option is the contract output of the shb.certs.certs SSL block.
Type: anything
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.ssl.paths.cert
Path to the cert file.
Type: absolute path
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.ssl.paths.key
Path to the key file.
Type: absolute path
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.ssl.systemdService
Systemd oneshot service used to generate the certificate. Ends with the .service suffix.
Use this if downstream services must wait for the certificates to be generated before starting.
Type: string
Example:
"cert-generator.service"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso
Setup SSO integration.
Type: submodule
Default:
{ }
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.enable
Whether to enable SSO integration…
Type: boolean
Default:
false
Example:
true
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.authEndpoint
Endpoint to the SSO provider. Leave null to not have SSO configured.
Type: null or string
Default:
null
Example:
"https://authelia.example.com"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.authorization_policy
Require one factor (password) or two factor (device) authentication.
Type: one of “one_factor”, “two_factor”
Default:
"one_factor"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.clientID
Client ID for the OIDC endpoint.
Type: string
Default:
"open-webui"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecret
OIDC shared secret for Open-WebUI.
Type: submodule
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecret.request
Request part of the secret contract.
Options set by the requester module enforcing some properties the secret should have.
Type: submodule
Default:
""
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecret.request.group
Linux group owning the secret file.
Type: string
Default:
"root"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecret.request.mode
Mode of the secret file.
Type: string
Default:
"0400"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecret.request.owner
Linux user owning the secret file.
Type: string
Default:
"open-webui"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecret.request.restartUnits
Systemd units to restart after the secret is updated.
Type: list of string
Default:
[
"open-webui.service"
]
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecret.result
Result part of the secret contract.
Options set by the provider module that indicates where the secret can be found.
Type: submodule
Default:
{
path = "/run/secrets/secret";
}
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecret.result.path
Path to the file containing the secret generated out of band.
This path will exist after deploying to a target host, it is not available through the nix store.
Type: absolute path
Default:
"/run/secrets/secret"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecretForAuthelia
OIDC shared secret for Authelia. Must be the same as sharedSecret
Type: submodule
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecretForAuthelia.request
Request part of the secret contract.
Options set by the requester module enforcing some properties the secret should have.
Type: submodule
Default: { mode = 0400; owner = config.shb.authelia.autheliaUser; group = root; restartUnits = [ ]; }
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecretForAuthelia.request.group
Linux group owning the secret file.
Type: string
Default:
"root"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecretForAuthelia.request.mode
Mode of the secret file.
Type: string
Default:
"0400"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecretForAuthelia.request.owner
Linux user owning the secret file.
Type: string
Default: config.shb.authelia.autheliaUser
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecretForAuthelia.request.restartUnits
Systemd units to restart after the secret is updated.
Type: list of string
Default:
[ ]
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecretForAuthelia.result
Result part of the secret contract.
Options set by the provider module that indicates where the secret can be found.
Type: submodule
Default:
{
path = "/run/secrets/secret";
}
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.sso.sharedSecretForAuthelia.result.path
Path to the file containing the secret generated out of band.
This path will exist after deploying to a target host, it is not available through the nix store.
Type: absolute path
Default:
"/run/secrets/secret"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|
shb.open-webui.subdomain
Subdomain under which Open-WebUI will be served.
Type: string
Default:
"open-webui"
Declared by:
<selfhostblocks/modules/services/open-webui.nix>
|