Files
homelab/active/software_pi/pi.md
T
ducoterra 8bcee5c17f document ops-user pi install and sudoers escalation policy
Adds the sysadmin setup recipe to the pi notes: run pi as a dedicated `ops`
user with a tightly controlled sudoers allowlist instead of root, so an agent
can do host work without unbounded privilege.

Includes the AGENTS.md to drop at /home/ops/AGENTS.md. It records that the
allowlist is discovered with `sudo -l` (hostnamectl, reboot, the dnf and
systemctl subcommands, firewall-cmd, the ansible shim, libvirt/virsh and
composer-cli, getfacl/setfacl, osbuild-auto.sh, btrfs scrub) and sets the hard
rule for agents: when a command is not on that list, stop, do not attempt
escalation workarounds, and ask the human to add the exact full-path sudoers
line for review before proceeding.

LLM-Generated: true
2026-10-17 12:26:40 -04:00

3.3 KiB

Pi AI Harness

Prereqs

I would recommend using pass to store your api key. This is installed with dnf install pass on Fedora systems.

After installing pass, update your ~/.gnupg/gpg-agent.conf to set the timeout to max so automated processes can use the values in your password store:

default-cache-ttl 2147483647
max-cache-ttl 2147483647

Then add a pass.sh to you ~/.bashrc.d that looks like

pass unlock

That way every time you log in your pass keyring is unlocked for your session so automations can use it.

Setup

This is my ~/.pi/agent/models.json

{
  "providers": {
    "reeseapps-aipi": {
      "baseUrl": "https://aipi.reeseapps.com/v1",
      "api": "openai-completions",
      "apiKey": "!pass aipi/dev-token",
      "models": [
        {
          "id": "juggernaut",
          "input": ["text", "image"],
          "reasoning": true,
          "contextWindow": 262144,
          "maxTokens": 32000,
          "thinkingLevelMap": {
            "off": "none",
            "minimal": null,
            "low": "low",
            "medium": "medium",
            "high": null,
            "xhigh": "xhigh",
            "max": null
          }
        },
        {
          "id": "turbo",
          "input": ["text", "image"],
          "reasoning": true,
          "contextWindow": 262144,
          "maxTokens": 32000,
           "thinkingLevelMap": {
            "off": "none",
            "minimal": null,
            "low": "low",
            "medium": "medium",
            "high": null,
            "xhigh": "xhigh",
            "max": null
          }
        }
      ]
    }
  }
}

Installing for sysadmin work

I would absolutely recommend installing pi under a special user (I call mine ops) with limited sudoers access that you tightly control. Pair that with the following AGENTS.md at /home/ops/AGENTS.md:

# AGENTS.md

## Sudo policy

The `ops` user on this machine has **limited sudoers capabilities**. The exact
allowlist is discoverable at any time with:

sudo -l

Allowed (NOPASSWD) commands currently include: `hostnamectl hostname`, `reboot`,
`dnf update/upgrade/install/remove/clean/makecache/autoremove`,
`dnf config-manager addrepo`, `systemctl start/restart/reload/enable`,
`firewall-cmd`, the ansible shim, `qemu-img`, `virsh`, `virt-install`,
`composer-cli`, `getfacl`, specific `setfacl` invocations,
`/usr/local/sbin/osbuild-auto.sh`, and `btrfs scrub`.

## Rule for agents

If you (the agent) believe you need a permission that is **not** in the
`sudo -l` allowlist — i.e., a command fails with a sudo permission error, or a
task requires root access you do not have — you must:

1. **Stop** and do not attempt workarounds that bypass sudo (no password
   guessing, no escalating via other users, no trying to write to root-owned
   paths without permission).
2. **Ask the human** to update sudoers with the specific command(s) you need,
   stating exactly which command(s) and arguments should be added so the user
   can review and approve them. Requests must be correct and copy-pastable,
   using full command paths in standard sudoers format, e.g.
   `ops ALL=(root) NOPASSWD: /usr/sbin/btrfs scrub*`

Do not proceed with root-only operations until the user has confirmed the
sudoers entries have been added.