Init

Dockerfile

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+# syntax=docker/dockerfile:1
+FROM alpine:3.20
+
+# Install minimal tooling
+RUN apk add --no-cache \
+	bash curl ca-certificates \
+	docker-cli inotify-tools procps \
+	busybox-extras iputils \
+	wakeonlan ethtool
+
+# Copy script
+WORKDIR /app
+COPY scripts/auto-boot-ollama-pc.sh /usr/local/bin/auto-boot-ollama-pc.sh
+RUN chmod +x /usr/local/bin/auto-boot-ollama-pc.sh
+
+# Environment defaults (can be overridden by compose/Komodo)
+ENV CONTAINER_NAME=paperless-ai \
+	OLLAMA_HOST=192.168.222.12 \
+	OLLAMA_PORT=11434 \
+	SINCE=0s
+
+ENTRYPOINT ["/usr/local/bin/auto-boot-ollama-pc.sh"]

compose.yaml

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+services:
+  auto-boot-ollama-host:
+    build: .
+    container_name: auto-boot-ollama-host
+    environment:
+      # customize as needed
+      CONTAINER_NAME: "paperless-ai"
+      OLLAMA_HOST: "192.168.222.12"
+      OLLAMA_PORT: "11434"
+      SINCE: "0s"
+      # WOL_MAC: "AA:BB:CC:DD:EE:FF"
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+    restart: unless-stopped
+    # Optional: network if you need special routing to OLLAMA_HOST
+    # networks:
+    #   - hostnet
+# networks:
+#   hostnet:
+#     external: true

scripts/auto-boot-ollama-host.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+# Purpose: Watch docker logs of a host container and react to an error pattern.
+# Notes:
+# - This runs *inside* a container with /var/run/docker.sock mounted.
+# - Requires docker CLI inside this container.
+
+# ---- Config via env (with sane defaults) ----
+CONTAINER_NAME="${CONTAINER_NAME:-paperless-ai}"
+OLLAMA_HOST="${OLLAMA_HOST:-192.168.222.12}"
+OLLAMA_PORT="${OLLAMA_PORT:-11434}"
+ERROR_PATTERN="${ERROR_PATTERN:-Error: \\[ERROR\\] Document analysis failed: connect EHOSTUNREACH ${OLLAMA_HOST}:${OLLAMA_PORT}}"
+
+DOCKER_CLI="${DOCKER_CLI:-docker}"      # docker CLI binary name
+WOL_CMD="${WOL_CMD:-wakeonlan}"         # or "etherwake -i eth0 $WOL_MAC"
+NC_CMD="${NC_CMD:-nc}"                  # netcat
+WOL_MAC="${WOL_MAC:-}"                  # optional: MAC to WOL
+SINCE="${SINCE:-0s}"                    # logs window (e.g., 5m)
+
+log() { printf '[%(%F %T)T] %s\n' -1 "$*"; }
+
+# Basic pre-flight: show which container is watched
+log "Watching logs for container='${CONTAINER_NAME}' since='${SINCE}'"
+log "Looking for pattern: ${ERROR_PATTERN}"
+
+# Stream logs and parse
+"${DOCKER_CLI}" logs -f --since "${SINCE}" "${CONTAINER_NAME}" 2>&1 | \
+while IFS= read -r line; do
+  # echo "$line"   # uncomment for debugging
+  if echo "$line" | grep -qE "${ERROR_PATTERN}"; then
+    log "Detected EHOSTUNREACH for Ollama (${OLLAMA_HOST}:${OLLAMA_PORT})."
+    # --- remediation examples (optional) ---
+    # if [[ -n "$WOL_MAC" ]]; then
+    #   log "Sending WOL to ${WOL_MAC}"
+    #   $WOL_CMD "$WOL_MAC" || true
+    # fi
+    # until $NC_CMD -z "$OLLAMA_HOST" "$OLLAMA_PORT"; do
+    #   log "Waiting for Ollama to be reachable..."
+    #   sleep 2
+    # done
+    # log "Ollama reachable again."
+  fi
+done