# Xibo CMS unable accessing mysql docker instance

**URL:** https://community.xibo.org.uk/t/xibo-cms-unable-accessing-mysql-docker-instance/25027
**Category:** CMS Installation
**Created:** [May 13, 2021, 1:30pm UTC](https://community.xibo.org.uk/t/xibo-cms-unable-accessing-mysql-docker-instance/25027 "2021-05-13T13:30:20Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### Author: ![giovanniparodi79](https://community.xibo.org.uk/user_avatar/community.xibo.org.uk/giovanniparodi79/32/10777_2.png) [@giovanniparodi79](https://community.xibo.org.uk/u/giovanniparodi79)
#### Post date: [May 13, 2021, 2:34pm UTC](https://community.xibo.org.uk/t/xibo-cms-unable-accessing-mysql-docker-instance/25027/2 "2021-05-13T14:34:55Z")

</div>

Some additional detail:

from the command line of the docker **xibo-docker-239\_cms-web\_1** , I tried the following commands:

```
mysql -u cms -p -h mysql
Enter password:

ERROR 2005 (HY000): Unknown MySQL server host 'mysql' (-3)

```

So the issue can be reproduced inside both

- xibo-docker-239\_cms-web\_1
- xibo-docker-2310\_cms-web\_1

However, performing command:  
`mysql -u cms -p -h 127.0.0.1`

inside the **xibo-docker-239\_cms-db\_1** , connection is successful, so the mysql instance inside that apps is working fine.

Finally, performing command:  
`docker inspect xibo-docker-239_cms-db_1`

I found the **IPAddress** associated with the mysql apps container (172.18.0.3).  
Therefore, in the command line of docker **xibo-docker-239\_cms-web\_1** , I performed following command:

```
mysql -u cms -p -h 172.18.0.3

```

and it works fine.

So it really seems that the name “mysql” is not visible to the **xibo-docker-239\_cms-web\_1** instance.

If anyone is able to provide some hint about how to fix the “by name” connection to mysql apps, it could be really useful.

If I have any update I will post additional info, in order to share interesting details to other customers.

Best regards

---

_[View the full topic](https://community.xibo.org.uk/t/xibo-cms-unable-accessing-mysql-docker-instance/25027)._