homelab/active/container_bifrost/bifrost.md

# Podman bifrost

- [Podman bifrost](#podman-bifrost)
  - [Setup bifrost Project](#setup-bifrost-project)
  - [Install bifrost](#install-bifrost)
    - [Create the ai user](#create-the-ai-user)
    - [Write the bifrost compose spec](#write-the-bifrost-compose-spec)
      - [A Note on Volumes](#a-note-on-volumes)
    - [Convert bifrost compose spec to quadlets](#convert-bifrost-compose-spec-to-quadlets)
    - [Start and enable your systemd quadlet](#start-and-enable-your-systemd-quadlet)
    - [Expose bifrost](#expose-bifrost)
  - [Using bifrost](#using-bifrost)
    - [Adding Models](#adding-models)
    - [Testing Models](#testing-models)
  - [Backup bifrost](#backup-bifrost)
  - [Upgrade bifrost](#upgrade-bifrost)
    - [Upgrade Quadlets](#upgrade-quadlets)
  - [Uninstall](#uninstall)
  - [Notes](#notes)
    - [SELinux](#selinux)

## Setup bifrost Project

- [ ] Copy and rename this folder to active/container_bifrost
- [ ] Find and replace bifrost with the name of the service.
- [ ] Create the rootless user to run the podman containers
- [ ] Write the compose.yaml spec for your service
- [ ] Convert the compose.yaml spec to a quadlet
- [ ] Install the quadlet on the podman server
- [ ] Expose the quadlet service
- [ ] Install a backup service and timer

## Install bifrost

### Create the ai user

```bash
# SSH into your podman server as root
useradd ai
loginctl enable-linger $(id -u ai)
systemctl --user --machine=ai@.host enable podman-restart
systemctl --user --machine=ai@.host enable --now podman.socket
mkdir -p /home/ai/.config/containers/systemd
```

### Write the bifrost compose spec

Edit the compose.yaml at active/container_bifrost/compose/compose.yaml

#### A Note on Volumes

Named volumes are stored at `/home/bifrost/.local/share/containers/storage/volumes/`.

### Convert bifrost compose spec to quadlets

Run the following to convert a compose.yaml into the various `.container` files for systemd:

```bash
# Generate the systemd service
podman run \
--security-opt label=disable \
--rm \
-v $(pwd)/active/container_bifrost/compose:/compose \
-v $(pwd)/active/container_bifrost/quadlets:/quadlets \
quay.io/k9withabone/podlet \
-f /quadlets \
-i \
--overwrite \
compose /compose/compose.yaml

# Copy the files to the server
export PODMAN_SERVER=ai-ai
scp -r active/container_bifrost/quadlets/. $PODMAN_SERVER:/home/ai/.config/containers/systemd/
```

### Start and enable your systemd quadlet

SSH into your podman server as root:

```bash
systemctl --user daemon-reload
systemctl --user restart bifrost
journalctl --user -u bifrost -f
# Enable auto-update service which will pull new container images automatically every day
systemctl --user enable --now podman-auto-update.timer
```

### Expose bifrost

1. If you need a domain, follow the [DDNS instructions](/active/container_ddns/ddns.md#install-a-new-ddns-service)
2. For a web service, follow the [Caddy instructions](/active/container_caddy/caddy.md#adding-a-new-caddy-record)
3. Finally, follow your OS's guide for opening ports via its firewall service.

## Using bifrost

### Adding Models

```json
// qwen3.5-35b-a3b-thinking
{
    "temperature": 1,
    "top_p": 0.95,
    "presence_penalty": 1.5,
    "extra_body": {
        "top_k": 20,
        "min_p": 0,
        "repetition_penalty": 1,
        "chat_template_kwargs": {
            "enable_thinking": true
        }
    }
}

// qwen3.5-35b-a3b-coding
{
    "temperature": 0.6,
    "top_p": 0.95,
    "presence_penalty": 0,
    "extra_body": {
        "top_k": 20,
        "min_p": 0,
        "repetition_penalty": 1,
        "chat_template_kwargs": {
            "enable_thinking": true
        }
    }
}

// qwen3.5-35b-a3b-instruct
{
    "temperature": 0.7,
    "top_p": 0.8,
    "presence_penalty": 1.5,
    "extra_body": {
        "top_k": 20,
        "min_p": 0,
        "repetition_penalty": 1,
        "chat_template_kwargs": {
            "enable_thinking": false
        }
    }
}
```

### Testing Models

```bash
# List models
curl -L -X GET 'https://aipi.reeseapps.com/v1/models' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer sk-1234'

curl -L -X POST 'https://aipi.reeseapps.com/v1/chat/completions' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer sk-1234' \
-d '{
    "model": "gpt-4o-mini", # 👈 REPLACE with 'public model name' for any db-model
    "messages": [
        {
            "content": "Hey, how's it going",
            "role": "user"
        }
    ],
}'
```

## Backup bifrost

Follow the [Borg Backup instructions](/active/systemd_borg/borg.md#set-up-a-client-for-backup)

## Upgrade bifrost

### Upgrade Quadlets

Upgrades should be a repeat of [writing the compose spec](#convert-bifrost-compose-spec-to-quadlets) and [installing the quadlets](#start-and-enable-your-systemd-quadlet)

```bash
export PODMAN_SERVER=
scp -r quadlets/. $PODMAN_SERVER$:/home/bifrost/.config/containers/systemd/
ssh bifrost systemctl --user daemon-reload
ssh bifrost systemctl --user restart bifrost
```

## Uninstall

```bash
# Stop the user's services
systemctl --user disable podman-restart
podman container stop --all
systemctl --user disable --now podman.socket
systemctl --user disable --now podman-auto-update.timer

# Delete the user (this won't delete their home directory)
# userdel might spit out an error like:
# userdel: user bifrost is currently used by process 591255
# kill those processes and try again
userdel bifrost
```

## Notes

### SELinux

<https://blog.christophersmart.com/2021/01/31/podman-volumes-and-selinux/>

:z allows a container to share a mounted volume with all other containers.

:Z allows a container to reserve a mounted volume and prevents any other container from accessing.