Install script - installs files and creates the fan-control service

install.sh

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+#!/bin/bash
+
+set -e
+
+if [[ "$(whoami)" != "root" ]]; then
+    echo "You need to run this script as root."
+    exit 1
+fi
+
+TARGETDIR="/opt/fan_control"
+if [ ! -z "$1" ]; then
+    TARGETDIR="$1"
+fi
+
+echo "*** Installing system dependencies..."
+if [ -x "$(command -v apt-get)" ]; then
+	apt-get update
+	apt-get install -y python3-venv python3-pip lm-sensors ipmitool
+elif [ -x "$(command -v dnf)" ]; then
+	dnf install -y python3-pip lm-sensors ipmitool
+else
+    echo "Unsupported package manager. Please install: python3-venv, python3-pip, lm-sensors, ipmitool"
+    exit 1
+fi
+
+echo "*** Creating folder '$TARGETDIR'..."
+if [ ! -d "$TARGETDIR" ]; then
+    mkdir -p "$TARGETDIR"
+fi
+
+echo "*** Creating Python3 virtual environment..."
+if [ -d "$TARGETDIR/venv" ]; then
+    echo "*** Existing venv found, purging it."
+    rm -rf "$TARGETDIR/venv"
+fi
+python3 -m venv "$TARGETDIR/venv"
+
+echo "*** Installing Python dependencies..."
+"$TARGETDIR/venv/bin/pip" install --upgrade pip
+"$TARGETDIR/venv/bin/pip" install PyYAML
+
+echo "*** Copying script and configuration..."
+if [ -f "$TARGETDIR/fan_control.yaml" ]; then
+    echo "*** Backing up existing configuration..."
+    cp "$TARGETDIR/fan_control.yaml" "$TARGETDIR/fan_control.yaml.backup.$(date +%Y%m%d_%H%M%S)"
+else
+    cp fan_control.yaml.example "$TARGETDIR/fan_control.yaml"
+    echo "*** Please edit $TARGETDIR/fan_control.yaml to configure your temperature thresholds"
+fi
+
+cp fan_control.py "$TARGETDIR/"
+chmod +x "$TARGETDIR/fan_control.py"
+
+echo "*** Creating SystemD service..."
+cat > /etc/systemd/system/fan-control.service << EOF
+[Unit]
+Description=Temperature-based fan speed controller
+After=multi-user.target
+Wants=multi-user.target
+
+[Service]
+Type=simple
+ExecStart=$TARGETDIR/venv/bin/python3 -u $TARGETDIR/fan_control.py
+Restart=always
+RestartSec=10
+User=root
+Group=root
+
+# Ensure fans return to automatic mode on service stop/failure
+ExecStopPost=/usr/bin/ipmitool raw 0x30 0x30 0x01 0x01
+
+# Resource limits
+MemoryLimit=100M
+CPUQuota=10%
+
+# Security hardening
+NoNewPrivileges=yes
+ProtectSystem=strict
+ProtectHome=yes
+ReadWritePaths=$TARGETDIR
+PrivateTmp=yes
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+echo "*** Testing the script..."
+if ! "$TARGETDIR/venv/bin/python3" -c "import yaml; print('✓ PyYAML working')"; then
+    echo "Error: PyYAML not properly installed"
+    exit 1
+fi
+
+if ! command -v sensors >/dev/null 2>&1; then
+    echo "Error: sensors command not found. Please install lm-sensors"
+    exit 1
+fi
+
+if ! sensors | grep -q "Core"; then
+    echo "Warning: No CPU core temperatures detected. You may need to run 'sensors-detect'"
+    echo "Run: sensors-detect and answer YES to safe probes, then reboot"
+fi
+
+echo "*** Enabling and starting service..."
+systemctl daemon-reload
+systemctl enable fan-control
+systemctl start fan-control
+
+echo "*** Waiting for service to start..."
+sleep 3
+
+echo "*** Installation complete! Service status:"
+systemctl status fan-control --no-pager
+
+echo ""
+echo "*** Quick checks:"
+echo "- Edit configuration: nano $TARGETDIR/fan_control.yaml"
+echo "- View logs: journalctl -u fan-control.service -f"
+echo "- Test manually: $TARGETDIR/venv/bin/python3 $TARGETDIR/fan_control.py"
+
+set +e