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dotfiles/README.md
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noconnorandClaude Opus 5 135112eee5 mcp-config/hermes: make the gateway's context limits actually reach the clients
Folds in the in-flight local-checkout work and fixes the context accounting
on top of it. Both halves are the same bug seen from two ends: clients were
sending requests larger than the backend's window and getting hard
ContextWindowExceededError 400s, intermittently, in a way that looked like
the model or the GPU misbehaving.

Already in flight here (unchanged in intent):
  - sync.sh prefers the LOCAL CHECKOUT over re-downloading from Gitea, and
    install.sh records the checkout path so it can be found. That recording
    is load-bearing: without it sync.sh cannot find the repo, silently falls
    back to Gitea, and every local edit to opencode.gateway.json is ignored.
    Observed on this box — ~/.config/mcp-sync/source did not exist, the
    default ~/.dotfiles is not where the checkout lives, and the Gitea base
    still served models:{}.
  - the hermes custom-provider wiring.

Fixed on top:

opencode had NO context limit on ANY gateway model, not a wrong one. Two
faults compounded. /model/info 403s for a day-to-day virtual key (only
management-scoped keys may read it), which sync.sh treats as best-effort and
falls back to names-only — as designed and as commented. But the merge then
did `prov["models"] = models`, replacing the map wholesale, so limits
declared in the base config were discarded too and there was no floor left.
Base specs are now a floor that live /model/info overrides field by field:
discovery still wins where present, so this adds no drift, and a 403 no
longer strips the limits. Verified: ornith 195584/32768, the qwens
261120/32768.

hermes' model map named `qwen3-vl-30b-a3b` at 262144 — a model the gateway
stopped serving when Ornith replaced it — while ornith-1.0-35b, the model
actually on cg-1 AND the only one with a window smaller than its neighbours
(196608), had no entry at all and inherited Hermes' default. The one model
needing a lower ceiling was the one not declaring one, which is exactly the
shape that fails only once a session grows.

NOTE for other boxes: hermes reads ~/.hermes/config.yaml, which install.sh
produces by MERGING gateway.yaml. Editing gateway.yaml alone changes nothing
until install.sh re-runs — this machine's live config was patched by hand.

Not addressed here, deliberately: the gateway-side context_window_fallback
(ai-k8s-iac). It is wired but inert while cg-2 is scaled down, so preventing
the oversized request client-side is what actually works today.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FoDK4wwB1Twty5gwiriYLf
2026-09-11 16:38:03 -04:00

131 lines
6.6 KiB
Markdown

# dotfiles
Configures fresh VMs (RHEL-family or Debian-family) with a consistent
environment. Run `./bootstrap.sh` (or curl-pipe it) to apply everything;
each module also runs standalone and is safe to re-run.
## Quick start
On a fresh box, apply everything with one command:
```sh
curl -fsSL https://git.nic-oconnor.com/public/dotfiles/raw/branch/main/bootstrap.sh | sh
```
When piped like this (no local checkout), `bootstrap.sh` clones the repo to
`~/.dotfiles` and runs from there, so `git` must be installed first. Re-running
the command updates the checkout (`git pull`) and re-applies every module.
Override the destination or source with `DOTFILES_DIR` / `DOTFILES_REPO`.
Already have a clone? Just run it directly:
```sh
./bootstrap.sh
```
## Modules
- `zsh/` — installs zsh + oh-my-zsh, drops a managed `~/.zshrc`
(robbyrussell theme, git plugin), and sets zsh as the login shell. The
managed rc sources `~/.zshrc.local` last for per-machine customizations
(see below).
- `git/` — sets git `user.name`/`user.email` and configures
`credential.helper store` (plaintext `~/.git-credentials`, 0600) for
HTTPS auth.
- `docker/` — installs full (rootful) Docker Engine from Docker's upstream
package repo (get.docker.com on Debian-family; the docker-ce repo wired up
directly on RHEL-family, since the convenience script rejects EL rebuilds
like Oracle Linux by name), enables the service (systemd hosts), and adds
the invoking user to the
`docker` group (takes effect at next login). No-ops where a rootless
Docker daemon is already running (e.g. Kasm) so it never fights that
setup. Uses sudo.
- `bin/` — installs userland devops CLIs as self-contained, statically
linked release binaries into `~/.local/bin`: jq, kubectl, helm, k9s,
kubectx/kubens, stern, yq, OpenTofu, terragrunt, task (go-task, the
Taskfile runner), the 1Password CLI `op` for secrets storage, the
opencode coding agent, zarf (DevSecOps for Offline and Airgapped
Kubernetes), and packer (HashiCorp's infrastructure build tool).
kind is installed only when full (non-rootless) Docker is available —
it doesn't work against rootless Docker, so it is skipped on Kasm.
No sudo, nothing outside `$HOME`, so tools persist across Kasm
redeploys with no reinstall. Idempotent: each tool records its version
under `~/.local/bin/.versions` and is skipped when the pinned version
is already present. `zsh/zshrc` puts `~/.local/bin` on `PATH`.
opencode is configured by `mcp-config/`: it points at the covert-gpt
LiteLLM gateway (`https://llm.covert-gpt.com/v1`) for models. MCP tools do
NOT come from the gateway — it hosts no MCP servers, deliberately; they run
client-side under your own credentials (see `mcp-config/README.md`). Run
`mcp-config/install.sh` once to store your LiteLLM key and enable
config sync — without it, opencode installs but can't reach the
gateway.
- `ansible/` — installs Ansible into a virtualenv at `~/.local/opt/ansible`
(it's Python, not a single binary) and symlinks its CLIs into
`~/.local/bin`. Persists across redeploys; only rebuilt when the venv is
missing or broken. Building it may install `python3`/`python3-venv` via
the system package manager (the one place this module uses sudo).
- `docker-rootless-cgroup/` — on systemd-less hosts (e.g. Kasm), hand-delegates
cgroup v2 controllers to the rootless Docker daemon so per-container cgroups
work (rootless Docker otherwise comes up with
`CgroupDriver=none`). Uses sudo for host cgroup writes and restarts the
daemon; no-ops on systemd or non-rootless hosts. Re-run at each bootstrap
(the cgroup layout resets on redeploy); its PATH shim lives in `$HOME`.
- `mcp-config/` — shared MCP gateway config sync for laptops (LiteLLM /
opencode). Run by `bootstrap.sh`, and standalone too. The config and skills
are read from the **local checkout**, not re-downloaded from Gitea, so this
repo does not have to be public for a shell to work; see its own README.
## Per-machine customizations and secrets
`~/.zshrc` is managed — bootstrap overwrites it, so never hand-edit it.
Per-machine settings and secrets go in `~/.zshrc.local`, which the managed
rc sources last (so it can override anything) and bootstrap never touches:
```sh
cp zsh/zshrc.local.example ~/.zshrc.local && chmod 600 ~/.zshrc.local
```
Variables modules look for:
- `GITEA_KEY` — personal access token for `git.nic-oconnor.com`. Used for
API/CLI work, and by `bootstrap.sh`/`mcp-config/` to read this repo when it
is **private** and there is no checkout yet. With a checkout on disk nothing
here needs it; HTTPS git auth otherwise goes through `git/`'s credential
helper.
- `LITELLM_KEY` — covert-gpt gateway key used by opencode. Normally you
don't set this by hand: run `mcp-config/install.sh` once and its shell
hook exports it from `~/.config/mcp-sync/key`. Set it in `~/.zshrc.local`
only on a box without mcp-sync.
- `OP_SERVICE_ACCOUNT_TOKEN` — 1Password service-account token for
non-interactive `op read` / `op run`.
- `GITEA_KEY`, `PROXMOX_TOKEN_ID`, `PROXMOX_TOKEN_SECRET` — **your own**
credentials for the client-side MCP servers in `mcp-config/`. opencode reads
them from your environment (`{env:VAR}`) and passes them to the MCP server it
spawns, so the tools act as *you*. Keep them in `~/.zshrc.local`; they are
never written into any config file.
These are NOT used by `ai-k8s-iac` / `task up`: the LiteLLM gateway hosts no
MCP servers and stores no MCP credentials. See `mcp-config/README.md`.
- `hermes/` — installs Hermes Agent (Nous Research's self-improving AI agent)
via npm. Hermes uses npx to spawn and downloads the Python hermes-agent from
PyPI. Everything under $HOME, so it survives Kasm redeploys.
It then merges `hermes/gateway.yaml` into `~/.hermes/config.yaml`, wiring
Hermes to the covert-gpt LiteLLM gateway as a named custom provider. The merge
is idempotent and touches only that provider entry, so the rest of your
personal config is left alone; `model.default` / `model.provider` are seeded
only on a fresh box. Unlike `mcp-config/`, this deploys at BOOTSTRAP time, not
per-shell — re-run `hermes/install.sh` to pick up a gateway.yaml change.
Depends on `mcp-config/install.sh` having run: gateway.yaml names the key
(`key_env: LITELLM_KEY`) but never contains it, and `mcp-config/sync.sh` is
what exports LITELLM_KEY into your shell. Without it Hermes 401s.
Secrets never go in this repo or in `zsh/zshrc` — that file is shared
config applied to every box.
`lib/os-detect.sh` provides shared package-manager detection (`dnf`/`yum`
vs `apt`); `lib/fetch.sh` provides arch detection and binary-download
helpers. Both are used by module install scripts.