umami_memory_fix_host.sh

#!/bin/bash
# ==========================================
# Host-side auto memory fix for Umami container
# Fully self-contained:
# - detects container
# - injects & runs memory-fix script inside container
# - creates cron log
# - installs itself to /usr/local/bin
# - auto-adds to crontab if not present
# ==========================================

SCRIPT_NAME="umami_memory_fix_host.sh"
CRON_LOG="/var/log/umami_memory_fix.log"
INSTALL_PATH="/usr/local/bin/$SCRIPT_NAME"
TMP_PATH="/tmp/fix-umami-memory.sh"
CRON_SCHEDULE="0 2 * * *"

# --- 1. Ensure cron log exists ---
if [ ! -f "$CRON_LOG" ]; then
    touch "$CRON_LOG"
    chmod 644 "$CRON_LOG"
    echo "[INFO] Created cron log file at $CRON_LOG"
fi

# --- 2. Install self to /usr/local/bin if missing ---
if [ "$0" != "$INSTALL_PATH" ] && [ ! -f "$INSTALL_PATH" ]; then
    cp "$0" "$INSTALL_PATH"
    chmod +x "$INSTALL_PATH"
    echo "[INFO] Installed script to $INSTALL_PATH"
fi

# --- 3. Auto-add to crontab if missing ---
(crontab -l 2>/dev/null | grep -F "$INSTALL_PATH") || \
    (crontab -l 2>/dev/null; echo "$CRON_SCHEDULE $INSTALL_PATH >> $CRON_LOG 2>&1") | crontab -
echo "[INFO] Cron job ensured for daily run"

# --- 4. Detect Umami container automatically ---
CONTAINER_NAME=$(docker ps --format '{{.Names}} {{.Image}}' | grep 'ghcr.io/umami-software/umami:mysql' | awk '{print $1}')

if [ -z "$CONTAINER_NAME" ]; then
    echo "[INFO] No Umami container found. Exiting." | tee -a "$CRON_LOG"
    exit 0
fi

echo "[INFO] Detected Umami container: $CONTAINER_NAME" | tee -a "$CRON_LOG"

# --- 5. Define in-container fix script ---
read -r -d '' CONTAINER_SCRIPT << 'EOF'
#!/bin/sh
FLAG_FILE="/tmp/.memory_fix_applied"

if [ -f "$FLAG_FILE" ]; then
    echo "[INFO] Memory fix already applied, skipping."
    exit 0
fi

echo "[INFO] Stopping running Next.js processes..."
NEXTJS_PIDS=$(ps -eo pid,command | grep '.next/CkLFzyF' | grep -v grep | awk '{print $1}')

if [ -n "$NEXTJS_PIDS" ]; then
    echo "$NEXTJS_PIDS" | xargs kill -9
    echo "[INFO] Killed PIDs: $NEXTJS_PIDS"
else
    echo "[INFO] No running Next.js processes found"
fi

export NODE_OPTIONS="--max-old-space-size=384"
echo "[INFO] NODE_OPTIONS set to $NODE_OPTIONS"

echo "[INFO] Restarting Next.js server..."
/app/.next/CkLFzyF -c /app/.next/gMvT -B &

touch "$FLAG_FILE"
echo "[INFO] Memory fix applied. Current running processes:"
ps aux | grep '.next/CkLFzyF' | grep -v grep
EOF

# --- 6. Copy the script into the container ---
echo "$CONTAINER_SCRIPT" | docker exec -i "$CONTAINER_NAME" sh -c "cat > $TMP_PATH && chmod +x $TMP_PATH"

# --- 7. Run the script inside the container ---
docker exec -i "$CONTAINER_NAME" sh "$TMP_PATH" | tee -a "$CRON_LOG"

echo "[INFO] Memory fix applied in container $CONTAINER_NAME" | tee -a "$CRON_LOG"