fix: We accpet InternalServerError because MySQL Router REST API return 500 when route status does not alive.

See: rluisr/mysqlrouter_exporter#30 (comment)

Author: rluisr

request.go

@@ -30,7 +30,8 @@ func (c *Client) request(url string) ([]byte, error) {
 	}
 	defer resp.Body.Close()
 
-	if resp.StatusCode != 200 {
+	// We accept InternalServerError because MySQL Router REST API return 500 when route status does not alive. see: https://github.com/rluisr/mysqlrouter_exporter/issues/30#issue-1703518829
+	if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusInternalServerError {
 		return nil, fmt.Errorf("%s got %d", errStatusCode, resp.StatusCode)
 	}