From 6151b43cba194e0b321b040b04190fb36acb7174 Mon Sep 17 00:00:00 2001
From: Helio Chissini de Castro <helio@kde.org>
Date: Wed, 15 Dec 2021 21:29:27 +0100
Subject: [PATCH] Simple script improvement to add the capability of different
user and password per database entry
Signed-off-by: Helio Chissini de Castro <helio@kde.org>
---
README.md | 9 +++++----
create-multiple-postgresql-databases.sh | 15 +++++++++------
2 files changed, 14 insertions(+), 10 deletions(-)
diff --git a/README.md b/README.md
index 3db6ca3..58c4852 100644
--- a/README.md
+++ b/README.md
@@ -18,8 +18,7 @@ mechanism.
### By mounting a volume
Clone the repository, mount its directory as a volume into
-`/docker-entrypoint-initdb.d` and declare database names separated by commas in
-`POSTGRES_MULTIPLE_DATABASES` environment variable as follows
+`/docker-entrypoint-initdb.d` and declare database names separated by commas and each entry with database, user and password separated by double colon in `POSTGRES_MULTIPLE_DATABASES` environment variable as follows
(`docker-compose` syntax):
myapp-postgresql:
@@ -27,9 +26,10 @@ Clone the repository, mount its directory as a volume into
volumes:
- ../docker-postgresql-multiple-databases:/docker-entrypoint-initdb.d
environment:
- - POSTGRES_MULTIPLE_DATABASES=db1,db2
+ - POSTGRES_MULTIPLE_DATABASES=db1:user:pwd,db2:user:pwd
- POSTGRES_USER=myapp
- POSTGRES_PASSWORD=
+ - POSTGRES_DB=db
### By building a custom image
@@ -48,10 +48,11 @@ to the container:
- POSTGRES_MULTIPLE_DATABASES=db1,db2
- POSTGRES_USER=myapp
- POSTGRES_PASSWORD=
+ - POSTGRES_DB=db
### Non-standard database names
If you need to use non-standard database names (hyphens, uppercase letters etc), quote them in `POSTGRES_MULTIPLE_DATABASES`:
environment:
- - POSTGRES_MULTIPLE_DATABASES="test-db-1","test-db-2"
+ - POSTGRES_MULTIPLE_DATABASES="test-db-1:user:pwd","test-db-2:user:pwd"
diff --git a/create-multiple-postgresql-databases.sh b/create-multiple-postgresql-databases.sh
index aa665fa..b582883 100755
--- a/create-multiple-postgresql-databases.sh
+++ b/create-multiple-postgresql-databases.sh
@@ -4,12 +4,15 @@ set -e
set -u
function create_user_and_database() {
- local database=$1
- echo " Creating user and database '$database'"
- psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" <<-EOSQL
- CREATE USER $database;
- CREATE DATABASE $database;
- GRANT ALL PRIVILEGES ON DATABASE $database TO $database;
+ local dbinfo=$1
+ IFS=":" read -r database user password <<< "$dbinfo"
+
+ echo "Creating database '$database' with user '$user' and password '$password'"
+ psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" <<-EOSQL
+ CREATE USER $user;
+ ALTER USER $user WITH ENCRYPTED PASSWORD '$password';
+ CREATE DATABASE $database;
+ GRANT ALL PRIVILEGES ON DATABASE $database TO $user;
EOSQL
}