Reapply "Merge branch 'canary' into kucherenko/canary"

This reverts commit e6cb6454db.

apps/monitoring/database/db.go

@@ -0,0 +1,47 @@
+package database
+
+import (
+	"database/sql"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+type DB struct {
+	*sql.DB
+}
+
+func InitDB() (*DB, error) {
+	db, err := sql.Open("sqlite3", "./monitoring.db")
+	if err != nil {
+		return nil, err
+	}
+
+	// Create metrics table if it doesn't exist
+	_, err = db.Exec(`
+		CREATE TABLE IF NOT EXISTS server_metrics (
+			timestamp TEXT PRIMARY KEY,
+			cpu REAL,
+			cpu_model TEXT,
+			cpu_cores INTEGER,
+			cpu_physical_cores INTEGER,
+			cpu_speed REAL,
+			os TEXT,
+			distro TEXT,
+			kernel TEXT,
+			arch TEXT,
+			mem_used REAL,
+			mem_used_gb REAL,
+			mem_total REAL,
+			uptime INTEGER,
+			disk_used REAL,
+			total_disk REAL,
+			network_in REAL,
+			network_out REAL
+		)
+	`)
+	if err != nil {
+		return nil, err
+	}
+
+	return &DB{db}, nil
+}