add mysqld exporter

Prometheus/install_mysqld_exporter.sh

@@ -0,0 +1,107 @@
+#!/bin/bash
+set -e
+
+#Detect Operation System
+
+if command -v apt >/dev/null 2>&1; then
+    echo "Detected apt-based system"
+    sudo apt update
+    sudo apt install -y wget curl tar 
+
+elif command -v dnf >/dev/null 2>&1; then
+    echo "Detected dnf-based system"
+    sudo dnf install -y wget curl tar 
+
+else
+    echo "Unsupported package manager"
+    exit 1
+fi
+
+
+# Download Node Exporter
+
+CN_URL="https://8.134.128.173/relayx/node_exporter-1.10.2.linux-amd64.tar.gz"
+GLOBAL_URL="https://github.com/prometheus/mysqld_exporter/releases/download/v0.18.0/mysqld_exporter-0.18.0.linux-amd64.tar.gz"
+TARGET="/tmp/mysqld_exporter-0.18.0.linux-amd64.tar.gz"
+
+is_cn=false
+
+echo "Detecting geographic location..."
+
+COUNTRY=$(curl -s --max-time 3 https://ipinfo.io/country || true)
+if [ "$COUNTRY" = "CN" ]; then
+    is_cn=true
+fi
+
+
+if [ "$is_cn" = true ]; then
+    echo "Geolocation: China mainland detected"
+    DOWNLOAD_URL="$CN_URL"
+else
+    echo "Geolocation: non-China region detected"
+    DOWNLOAD_URL="$GLOBAL_URL"
+fi
+
+echo "Downloading from: $DOWNLOAD_URL"
+curl -fL -o "$TARGET" "$DOWNLOAD_URL"
+
+
+sudo mkdir -p /etc/mysqld_exporter
+
+
+# Extract
+echo "Extracting Node Exporter..."
+tar -zxvf /tmp/mysqld_exporter-0.18.0.linux-amd64.tar.gz -C /tmp
+
+# Copy to /node_exporter
+echo "Copying Node Exporter to /node_exporter..."
+sudo cp -r /tmp/mysqld_exporter-0.18.0.linux-amd64.tar.gz/mysqld_exporter /usr/bin/mysqld_exporter
+
+# Create mysqld_exporter config
+sudo tee "/etc/mysqld_exporter/my.cnf" > /dev/null <<EOF
+
+[client]
+user=exporter
+password=exporter_password
+host=127.0.0.1
+port=3306
+
+EOF
+
+# Create systemd service file
+SERVICE_FILE="/etc/systemd/system/mysqld_exporter.service"
+
+echo "Creating systemd service file..."
+sudo tee "$SERVICE_FILE" > /dev/null <<EOF
+
+[Unit]
+Description=Prometheus MySQL Exporter
+Documentation=https://github.com/prometheus/mysqld_exporter
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=simple
+User=mysqld_exporter
+Group=mysqld_exporter
+ExecStart=/usr/local/bin/mysqld_exporter \
+  --config.my-cnf=/etc/mysqld_exporter/my.cnf \
+  --web.listen-address=0.0.0.0:9104
+Restart=always
+RestartSec=5
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=full
+ProtectHome=true
+
+[Install]
+WantedBy=multi-user.target
+
+EOF
+
+# Reload systemd, enable and start service
+echo "Enabling and starting mysqld_exporter service..."
+sudo systemctl daemon-reload
+sudo systemctl enable --now mysqld_exporter.service
+
+echo "MySQL Exporter installation completed, listening on port 9104"