Agent
b8298024fb
After installing cron, the agent now starts right away via nohup ... & disown instead of waiting for the next boot.
148 lines
4.0 KiB
Bash
148 lines
4.0 KiB
Bash
#!/bin/bash
|
|
# ServerManager Agent Installer
|
|
# Usage: bash agent-install.sh <SERVER_URL> <AGENT_KEY> [INTERVAL]
|
|
|
|
SERVER_URL="${1:-}"
|
|
AGENT_KEY="${2:-}"
|
|
INTERVAL="${3:-60}"
|
|
|
|
if [ -z "$SERVER_URL" ] || [ -z "$AGENT_KEY" ]; then
|
|
echo "Usage: bash agent-install.sh <SERVER_URL> <AGENT_KEY> [INTERVAL]"
|
|
exit 1
|
|
fi
|
|
|
|
# Detect if we can run as root
|
|
CAN_ROOT=false
|
|
if [ "$(id -u)" -eq 0 ]; then
|
|
CAN_ROOT=true
|
|
elif command -v sudo >/dev/null 2>&1 && sudo -n true 2>/dev/null; then
|
|
CAN_ROOT=true
|
|
fi
|
|
|
|
if [ "$CAN_ROOT" = true ]; then
|
|
if [ "$(id -u)" -ne 0 ]; then
|
|
if command -v script >/dev/null 2>&1; then
|
|
exec script -q -c "sudo bash '$0' '$1' '$2' '$3'" /dev/null
|
|
fi
|
|
exec sudo bash "$0" "$@"
|
|
fi
|
|
|
|
AGENT_BIN="/usr/local/bin/servermanager-agent"
|
|
SERVICE_FILE="/etc/systemd/system/servermanager-agent.service"
|
|
USE_SYSTEMD=true
|
|
INSTALL_MODE="system"
|
|
else
|
|
AGENT_BIN="$HOME/.local/bin/servermanager-agent"
|
|
USE_SYSTEMD=false
|
|
INSTALL_MODE="user"
|
|
fi
|
|
|
|
echo "[1/3] Creating directory..."
|
|
mkdir -p "$(dirname "$AGENT_BIN")"
|
|
|
|
echo "[2/3] Installing agent binary..."
|
|
cat > "$AGENT_BIN" << EOF
|
|
#!/bin/bash
|
|
|
|
SERVER_URL="$SERVER_URL"
|
|
AGENT_KEY="$AGENT_KEY"
|
|
INTERVAL=$INTERVAL
|
|
|
|
collect_metrics() {
|
|
CPU=\$(LC_ALL=C top -bn1 2>/dev/null | grep 'Cpu(s)' | awk '{print \$2}' | cut -d'%' -f1 || true)
|
|
[ -z "\$CPU" ] && CPU=0
|
|
RAM=\$(LC_ALL=C free 2>/dev/null | grep Mem | awk '{printf "%.1f", \$3/\$2 * 100}' || true)
|
|
[ -z "\$RAM" ] && RAM=0
|
|
DISK=\$(df / 2>/dev/null | tail -1 | awk '{print \$5}' | sed 's/%//' || true)
|
|
[ -z "\$DISK" ] && DISK=0
|
|
LOAD=\$(cat /proc/loadavg 2>/dev/null | awk '{print \$1}' || true)
|
|
[ -z "\$LOAD" ] && LOAD=0
|
|
UPTIME=\$(uptime -p 2>/dev/null | sed 's/^up //' || true)
|
|
[ -z "\$UPTIME" ] && UPTIME=""
|
|
}
|
|
|
|
push_metrics() {
|
|
payload=\$(cat << PAYLOAD
|
|
{
|
|
"agent_key": "\$AGENT_KEY",
|
|
"cpu": \$CPU,
|
|
"ram": \$RAM,
|
|
"disk": \$DISK,
|
|
"load": \$LOAD,
|
|
"uptime": "\$UPTIME"
|
|
}
|
|
PAYLOAD
|
|
)
|
|
local code
|
|
code=\$(curl -s -X POST "$SERVER_URL/api/metrics/push" \
|
|
-H "Content-Type: application/json" \
|
|
-d "\$payload" \
|
|
--connect-timeout 10 --max-time 30 \
|
|
-o /dev/null -w "%{http_code}" 2>/dev/null) || code=0
|
|
echo "\$code"
|
|
}
|
|
|
|
echo "ServerManager Agent started"
|
|
echo " Server: $SERVER_URL/api/metrics/push"
|
|
echo " Interval: \${INTERVAL}s"
|
|
echo " Host: \$(hostname)"
|
|
sleep 2
|
|
while true; do
|
|
collect_metrics
|
|
http_code=\$(push_metrics)
|
|
echo "[\$(date)] HTTP \$http_code"
|
|
if [ "\$http_code" = "0" ]; then
|
|
echo " curl failed — check SERVER_URL=$SERVER_URL"
|
|
fi
|
|
sleep "\$INTERVAL"
|
|
done
|
|
EOF
|
|
|
|
chmod +x "$AGENT_BIN"
|
|
|
|
if [ ! -f "$AGENT_BIN" ]; then
|
|
echo "ERROR: Agent binary was not created"
|
|
exit 1
|
|
fi
|
|
echo " Binary: $AGENT_BIN ($(wc -c < "$AGENT_BIN") bytes)"
|
|
|
|
echo "[3/3] Enabling auto-start..."
|
|
|
|
if [ "$USE_SYSTEMD" = true ]; then
|
|
echo " Using systemd service..."
|
|
cat > "$SERVICE_FILE" << 'UNIT'
|
|
[Unit]
|
|
Description=ServerManager Monitoring Agent
|
|
After=network-online.target
|
|
Wants=network-online.target
|
|
[Service]
|
|
Type=simple
|
|
ExecStart=/usr/local/bin/servermanager-agent
|
|
Restart=always
|
|
RestartSec=10
|
|
[Install]
|
|
WantedBy=multi-user.target
|
|
UNIT
|
|
systemctl daemon-reload 2>/dev/null || true
|
|
systemctl enable servermanager-agent 2>/dev/null || true
|
|
systemctl restart servermanager-agent 2>/dev/null || true
|
|
else
|
|
echo " Using crontab (@reboot)..."
|
|
LOG_DIR="$HOME/.local/share/servermanager"
|
|
mkdir -p "$LOG_DIR"
|
|
CRON_JOB="@reboot $AGENT_BIN > $LOG_DIR/agent.log 2>&1"
|
|
(crontab -l 2>/dev/null | grep -v 'servermanager-agent'; echo "$CRON_JOB") | crontab - 2>/dev/null || {
|
|
echo "WARNING: Could not install crontab."
|
|
echo " Run: $AGENT_BIN &"
|
|
}
|
|
echo " Starting agent in background..."
|
|
nohup "$AGENT_BIN" > "$LOG_DIR/agent.log" 2>&1 & disown
|
|
echo " Agent started (PID $!)"
|
|
fi
|
|
|
|
echo ""
|
|
echo "ServerManager Agent installed successfully!"
|
|
echo " Mode: $INSTALL_MODE"
|
|
echo " Binary: $AGENT_BIN"
|
|
echo " Config: embedded in binary (no external config file)"
|