==== Error ====
* service.version: 1.41.0-wmf.27
* trace.id: b0a79c86-20d9-48f0-925d-811379c69e25
* [[ https://logstash.wikimedia.org/app/dashboards#/view/AXFV7JE83bOlOASGccsT?_g=(time:(from:'2023-09-19T18:10:42.345Z',to:'2023-09-20T18:29:06.554Z'))&_a=(query:(query_string:(query:'reqId:%22b0a79c86-20d9-48f0-925d-811379c69e25%22'))) | Find trace.id in Logstash ]]
```name=labels.normalized_message,lines=10
Uncaught ConfigException: Failed to load configuration from etcd: in /srv/mediawiki/php-1.41.0-wmf.27/includes/config/EtcdConfig.php:229
```
```name=error.stack_trace,lines=10
(REDACTED)
```
==== Impact ====
==== Notes ====
~13 in last hour. I'm seeing this for .26 as well, so presumably not train-related.
>>! @Clement_Goubert wrote at T349376:
> This issue surfaced following [[ https://gerrit.wikimedia.org/r/q/I227ead395513877da88dd8b8abbd5ba7be25d5c7 | this change ]] that restored logging capability to the EtcdConfig class.
>
> Logstash link: https://logstash.wikimedia.org/goto/3a693de4428249a88d707aa8bf4e1672
>
> It is currently logging about 300k messages per 24 hours, which will undoubtedly become an issue.
>
> ```name=Diagnostic message
> EtcdConfig using stale data: lost lock in /srv/mediawiki/php-1.42.0-wmf.1/includes/config/EtcdConfig.php on line 218
> ```