> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/continuous-delivery/troubleshooting-and-resources/armory/general/clouddriver-shows-connection-is-not-available-request-timed-out-after-10000ms.md).

# Clouddriver shows "Connection is not available, request timed out after 10000ms."

### Issue <a href="#issue" id="issue"></a>

An error stating that `Connection is not available, request timed out after 10000ms` is observed in an environment with `MySQL` used for CloudDriver, along with `HA-mode` enabled. Clouddriver logs show the following error:

```
2021-10-03 13:34:54.553 ERROR 1 --- [gPodsObserver-0] c.n.s.c.s.c.SqlCachingPodsObserver       : Failed to manage replicas heartbeat
org.springframework.dao.TransientDataAccessResourceException: jOOQ; SQL [select * from caching_replicas where pod_id = ...?]; default - Connection is not available, request timed out after 10000ms.; nested exception is java.sql.SQLTransientConnectionException: default - Connection is not available, request timed out after 10000ms.
	at org.jooq_3.13.2.MYSQL.debug(Unknown Source) ~[na:na]
```

### Cause <a href="#cause" id="cause"></a>

The issue pertains to Clouddriver being unable to establish connections with MySQL, with HA Mode enabled due to the amount of connections being attempted.