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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