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start: support creation of user and database at launch

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Refer #5
This commit is contained in:
Sameer Naik
2014-09-27 14:10:30 +05:30
parent 916a36f163
commit 370e1aea63
2 changed files with 69 additions and 0 deletions
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README.md
+36
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@@ -5,6 +5,7 @@
- [Reporting Issues](#reporting-issues)
- [Installation](#installation)
- [Quick Start](#quick-start)
- [Creating User and Database at Launch](creating-user-and-database-at-launch)
- [Configuration](#configuration)
- [Data Store](#data-store)
- [Securing the server](#securing-the-server)
@@ -91,6 +92,41 @@ To test if the postgresql server is working properly, try connecting to the serv
psql -U postgres -h $(docker inspect --format {{.NetworkSettings.IPAddress}} postgresql)
```
# Creating User and Database at Launch
The image allows you to create a user and database at launch time.
To create a new user you should specify the `DB_USER` and `DB_PASS` variables. The following command will create a new user *dbuser* with the password *dbpass*.
```bash
docker run --name postgresql -d \
-e 'DB_USER=dbuser' -e 'DB_PASS=dbpass' \
sameersbn/postgresql:latest
```
**NOTE**
- If the password is not specified the user will not be created
- If the user user already exists no changes will be made
Similarly, you can also create a new database by specifying the database name in the `DB_NAME` variable.
```bash
docker run --name postgresql -d \
-e 'DB_NAME=dbname' sameersbn/postgresql:latest
```
If the `DB_USER` and `DB_PASS` variables are also specified while creating the database, then the user is granted access to the database.
For example,
```bash
docker run --name postgresql -d \
-e 'DB_USER=dbuser' -e 'DB_PASS=dbpass' -e 'DB_NAME=dbname' \
sameersbn/postgresql:latest
```
, will create a user *dbuser* with the password *dbpass*. It will also create a database named *dbname* and the *dbuser* user will have full access to the *dbname* database.
# Configuration
## Data Store
start
+33
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@@ -6,6 +6,10 @@ PG_CONFDIR="/etc/postgresql/${PG_VERSION}/main"
PG_BINDIR="/usr/lib/postgresql/${PG_VERSION}/bin"
PG_DATADIR="/var/lib/postgresql/${PG_VERSION}/main"
DB_NAME=${DB_NAME:-}
DB_USER=${DB_USER:-}
DB_PASS=${DB_PASS:-}
# fix permissions and ownership of /var/lib/postgresql
mkdir -p -m 0700 /var/lib/postgresql
chown -R postgres:postgres /var/lib/postgresql
@@ -49,6 +53,35 @@ if [ -f /var/lib/postgresql/pwfile ]; then
echo "|------------------------------------------------------------------|"
fi
if [ -n "${DB_USER}" ]; then
if [ -z "${DB_PASS}" ]; then
echo ""
echo "WARNING: "
echo " Please specify a password for \"${DB_USER}\". Skipping user creation..."
echo ""
DB_USER=
else
echo "Creating user \"${DB_USER}\"..."
echo "CREATE ROLE ${DB_USER} with LOGIN CREATEDB PASSWORD '${DB_PASS}';" |
sudo -u postgres -H ${PG_BINDIR}/postgres --single \
-D ${PG_DATADIR} -c config_file=${PG_CONFDIR}/postgresql.conf >/dev/null 2>&1
fi
fi
if [ -n "${DB_NAME}" ]; then
echo "Creating database \"${DB_NAME}\"..."
echo "CREATE DATABASE ${DB_NAME};" | \
sudo -u postgres -H ${PG_BINDIR}/postgres --single \
-D ${PG_DATADIR} -c config_file=${PG_CONFDIR}/postgresql.conf >/dev/null 2>&1
if [ -n "${DB_USER}" ]; then
echo "Granting access to database \"${DB_NAME}\" for user \"${DB_USER}\"..."
echo "GRANT ALL PRIVILEGES ON DATABASE ${DB_NAME} to ${DB_USER};" |
sudo -u postgres -H ${PG_BINDIR}/postgres --single \
-D ${PG_DATADIR} -c config_file=${PG_CONFDIR}/postgresql.conf >/dev/null 2>&1
fi
fi
echo "Starting PostgreSQL server..."
exec sudo -u postgres -H ${PG_BINDIR}/postgres \
-D ${PG_DATADIR} -c config_file=${PG_CONFDIR}/postgresql.conf