Merge pull request 'fix' (#13) from master into dev

Reviewed-on: https://gitea.chocomarsh.com/self/monitoring/pulls/13

app/storage/clickhouse/client.go

@@ -53,7 +53,11 @@ func connect() (*driver.Conn, error) {
 }
 
 func Migrate() error {
-	rows, err := Connection.Query(
+	rows, err := Connection.Query(context.TODO(), "SELECT 1")
+	if err != nil {
+		log.Fatal("Query failed:", err)
+	}
+	rows, err = Connection.Query(
 		context.TODO(), 
 		`CREATE TABLE IF NOT EXISTS endpoints (
 			timestamp        DateTime,