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Merge pull request #7312 from scjane/patch-110 

Update postgresql_service.md
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--- ---
description: Running and installing a PostgreSQL service description: Running and installing a PostgreSQL service
keywords: docker, example, package installation, postgresql keywords: docker, example, package installation, postgresql
title: Dockerize PostgreSQL title: Dockerize PostgreSQL
--- ---
## Installing PostgreSQL on Docker ## Install PostgreSQL on Docker
Assuming there is no Docker image that suits your needs on the [Docker Assuming there is no Docker image that suits your needs on the [Docker
Hub](http://hub.docker.com), you can create one yourself. Hub](http://hub.docker.com), you can create one yourself.
@ -67,7 +67,7 @@ VOLUME ["/etc/postgresql", "/var/log/postgresql", "/var/lib/postgresql"]
CMD ["/usr/lib/postgresql/9.3/bin/postgres", "-D", "/var/lib/postgresql/9.3/main", "-c", "config_file=/etc/postgresql/9.3/main/postgresql.conf"] CMD ["/usr/lib/postgresql/9.3/bin/postgres", "-D", "/var/lib/postgresql/9.3/main", "-c", "config_file=/etc/postgresql/9.3/main/postgresql.conf"]
``` ```
Build an image from the Dockerfile assign it a name. Build an image from the Dockerfile and assign it a name.
```bash ```bash
$ docker build -t eg_postgresql . $ docker build -t eg_postgresql .
@ -79,14 +79,14 @@ Run the PostgreSQL server container (in the foreground):
$ docker run --rm -P --name pg_test eg_postgresql $ docker run --rm -P --name pg_test eg_postgresql
``` ```
There are 2 ways to connect to the PostgreSQL server. We can use [*Link There are two ways to connect to the PostgreSQL server. We can use [*Link
Containers*](../userguide/networking/default_network/dockerlinks.md), or we can access it from our host Containers*](../userguide/networking/default_network/dockerlinks.md), or we can access it from our host
(or the network). (or the network).
> **Note**: The `--rm` removes the container and its image when > **Note**: The `--rm` removes the container and its image when
the container exits successfully. the container exits successfully.
### Using container linking ### Use container linking
Containers can be linked to another container's ports directly using Containers can be linked to another container's ports directly using
`-link remote_name:local_alias` in the client's `-link remote_name:local_alias` in the client's
@ -99,7 +99,7 @@ $ docker run --rm -t -i --link pg_test:pg eg_postgresql bash
postgres@7ef98b1b7243:/$ psql -h $PG_PORT_5432_TCP_ADDR -p $PG_PORT_5432_TCP_PORT -d docker -U docker --password postgres@7ef98b1b7243:/$ psql -h $PG_PORT_5432_TCP_ADDR -p $PG_PORT_5432_TCP_PORT -d docker -U docker --password
``` ```
### Connecting from your host system ### Connect from your host system
Assuming you have the postgresql-client installed, you can use the Assuming you have the postgresql-client installed, you can use the
host-mapped port to test as well. You need to use `docker ps` host-mapped port to test as well. You need to use `docker ps`
@ -115,7 +115,7 @@ CONTAINER ID IMAGE COMMAND CREATED
$ psql -h localhost -p 49153 -d docker -U docker --password $ psql -h localhost -p 49153 -d docker -U docker --password
``` ```
### Testing the database ### Test the database
Once you have authenticated and have a `docker =#` Once you have authenticated and have a `docker =#`
prompt, you can create a table and populate it. prompt, you can create a table and populate it.
@ -138,7 +138,7 @@ $ docker=# select * from cities;
(1 row) (1 row)
``` ```
### Using the container volumes ### Use the container volumes
You can use the defined volumes to inspect the PostgreSQL log files and You can use the defined volumes to inspect the PostgreSQL log files and
to backup your configuration and data: to backup your configuration and data: