40 lines
1.2 KiB
Markdown
40 lines
1.2 KiB
Markdown
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# Using database on host machine from Docker
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## Database configuration
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### PostgreSQL
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You need to make PostgreSQL listen not only `localhost`, but also Docker's network interface.
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To do that you need to add host machine IP address in the Docker network (usually `172.17.0.1`) to the
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`postgresql.conf` by changing `listen_addresses` parameter:
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```ini
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# Listen local interface and also Docker's network
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listen_addresses = 'localhost,172.17.0.1'
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```
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Then you need to allow apps inside Docker containers to authenticate. That could be done by adding following line to the
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`pg_hba.conf`:
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```
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# Docker network
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host all all 172.17.0.0/12 md5
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```
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Do not forget to restart your PostgreSQL server. For PostgreSQL 12 and `main` cluster it could be usually done like that:
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```shell
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systemctl restart postgresql@12-main.service
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```
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### MySQL / MariaDB
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TBW
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## Application configuration inside Docker
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Stacks which allow to use external database back-end should also map `host.docker.internal` to the host machine
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address inside Docker's default network.
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So to connect to the database from the application inside the container you should use `host.docker.internal` as the
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database host/address.
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