I am trying to create table 'User' in my database with a docker container with PostgreSQL and pgAdmin on docker-compose up.
I am following this StackOveflow article here.
DockerFile
FROM postgres:latest
COPY schema.sql /docker-entrypoint-initdb.d/
docker-compose.yaml
version: "3.8"
services:
db:
build: .
restart: always
environment:
POSTGRES_DB: xxx
POSTGRES_USER: admin
POSTGRES_PASSWORD: xxx
PGDATA: /var/lib/postgresql/data
ports:
- "5432:5432"
volumes:
- db-data:/var/lib/postgresql/data
pgadmin:
image: dpage/pgadmin4:latest
restart: always
environment:
PGADMIN_DEFAULT_EMAIL: admin#xxx.com
PGADMIN_DEFAULT_PASSWORD: xxx
PGADMIN_LISTEN_PORT: 80
ports:
- "8080:80"
volumes:
- pgadmin-data:/var/lib/pgadmin
links:
- "db:pgsql-server"
volumes:
db-data:
pgadmin-data:
schema.sql
create Table Users (
id SERIAL,
uuid VARCHAR(100) NOT NULL
)
The container and admin console starts up fine. However, the table is not generated and cannot be found in pgAdmin.
I exec-ed into the container and the file schema.sql is well copied into /docker-entrypoint-initdb.d/ directory.
In the PostgreSQL Docker repository, the documentation mentions that my data directory has to be empty or the files in the init folder will not be run. Could this be my issue?
How can I create my User table in my dockerized PostgreSQL when I run the container?
Related
I have setup from a tutorial a pgadmin4 container and a PostgreSQL container with the following docker-compose:
version: "2"
services:
db:
image: postgres:14
restart: always
environment:
POSTGRES_DB: postgres
POSTGRES_USER: admin
POSTGRES_PASSWORD: secret
PGDATA: /var/lib/postgresql/data
volumes:
- db-data:/opt/docker/pgadmin4/postgresql/data
- /home/laurent/Documents/Informatique/Docker/sample-database:/opt
ports:
- "5432:5432"
pgadmin:
image: dpage/pgadmin4:4
restart: always
environment:
PGADMIN_DEFAULT_EMAIL: admin#linuxhint.com
PGADMIN_DEFAULT_PASSWORD: secret
PGADMIN_LISTEN_PORT: 80
ports:
- "8080:80"
volumes:
- pgadmin-data:/var/lib/pgadmin
- /home/laurent/Documents/Informatique/Docker/sample-database:/opt
links:
- "db:pgsql-server"
volumes:
db-data:
pgadmin-data:
In both conainers, I have mounted the path /home/laurent/Documents/Informatique/Docker/sample-database where I have put a sample database.
After having created the dvdrental database as explained in the tutorial, I try to import it with restore, but I cannot find my /opt/dvdrental.tar as expected.
When I Select file, I get this:
If I add opt in the path and refresh, nothing more.
But if I open a console in both containers, I have /opt/dvdrental.tar.
What do I miss?
Experimenting with Postgres and Pgadmin4 with Docker Compose. Initially I use this as my docker-compose.yml file.
version: '3.8'
services:
db:
container_name: pg_container
image: postgres
restart: always
volumes:
- ./postgres-data:/var/lib/postgresql/data
environment:
POSTGRES_USER: root
POSTGRES_PASSWORD: root
POSTGRES_DB: test_db
ports:
- "5432:5432"
pgadmin:
container_name: pgadmin4_container
image: dpage/pgadmin4
restart: always
volumes:
- ./data/pgadmin:/var/lib/pgadmin
environment:
PGADMIN_DEFAULT_EMAIL: admin#admin.com
PGADMIN_DEFAULT_PASSWORD: root
ports:
- "5050:80"
links:
- "db:psql-server"
I ran:
chown -R 5050:5050 data
So that pgadmin4 could save it's configuration and it worked beautifully. Then I tried to bring it down and update the POSTGRES_PASSWORD to test.
docker-compose down
UPDATED docker-compose.yml file to:
environment:
POSTGRES_USER: root
POSTGRES_PASSWORD: test
And then brought it back up:
docker-compose up
To my surprise when connecting to Postgres from Pgadmin4 test does not work as the password, but root does. So my question is when Postgres creates the data directory does it store the credentials somewhere in there? Is there a way to update the password and user once it has been initially created?
I know this question is already asked and also answer given. But it is not working for me. I follow the same. My postgres container is running fine. I checked inside the container that /docker-entrypoint-initdb.d/init.sql exist.I used the following docker-compose.yml.
version: "3"
services:
postgres:
image: postgres:latest
network_mode: bridge
container_name: postgres
expose:
- 5432
ports:
- 5432:5432
volumes:
- ./init.sql:/docker-entrypoint-initdb.d/init.sql
environment:
- POSTGRES_PASSWORD=admin
- POSTGRES_USER=postgres
- POSTGRES_DB=dev
restart: unless-stopped
# APP
profile_editor2:
build:
context: .
dockerfile: ./Dockerfile
network_mode: bridge
container_name: profile_editor2
volumes:
- ./image:/app/image
expose:
- 8080
ports:
- 8080:8080
restart: unless-stopped
depends_on:
- postgres
links:
- postgres
volumes:
postgres-data:
init.sql:-
create table sometable(id int);
No table created. I can see only the database is created. How do I create a table and also if possible insert some data into the table?
You can write your queries inside init.sql, in this squence:-
DROP DATABASE IF EXISTS test_db;
CREATE DATABASE test_db;
\c test_db;
CREATE TABLE Role(
RoleID SERIAL PRIMARY KEY,
RoleName varchar(50),
);
insert into Role(RoleName)
values ('Admin'),('User');
I know this question is already asked and also answer given. But it is not working for me. I follow the same. My postgres container is running fine. I checked inside the container that /docker-entrypoint-initdb.d/init.sql exist.I used the following docker-compose.yml.
version: "3"
services:
postgres:
image: postgres:latest
network_mode: bridge
container_name: postgres
expose:
- 5432
ports:
- 5432:5432
volumes:
- ./init.sql:/docker-entrypoint-initdb.d/init.sql
environment:
- POSTGRES_PASSWORD=admin
- POSTGRES_USER=postgres
- POSTGRES_DB=dev
restart: unless-stopped
# APP
profile_editor2:
build:
context: .
dockerfile: ./Dockerfile
network_mode: bridge
container_name: profile_editor2
volumes:
- ./image:/app/image
expose:
- 8080
ports:
- 8080:8080
restart: unless-stopped
depends_on:
- postgres
links:
- postgres
volumes:
postgres-data:
init.sql:-
create table sometable(id int);
No table created. I can see only the database is created. How do I create a table and also if possible insert some data into the table?
You can write your queries inside init.sql, in this squence:-
DROP DATABASE IF EXISTS test_db;
CREATE DATABASE test_db;
\c test_db;
CREATE TABLE Role(
RoleID SERIAL PRIMARY KEY,
RoleName varchar(50),
);
insert into Role(RoleName)
values ('Admin'),('User');
I have the following docker-compose file:
version: '3.5'
services:
postgres:
container_name: postgres_container
image: postgres
environment:
POSTGRES_USER: ${POSTGRES_USER:-postgres}
POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-changeme}
PGDATA: /data/postgres
volumes:
- postgres:/data/postgres
onrun:
psql -h=localhost -P=${POSTGRES_PASSWORD} -U=${POSTGRES_USER} -tc "SELECT 1 FROM pg_database WHERE datname = 'premiership'" | grep -q 1 || psql -h=localhost -P=${POSTGRES_PASSWORD}-U=${POSTGRES_USER}c "CREATE DATABASE premiership"
ports:
- "5432:5432"
networks:
- postgres
restart: unless-stopped
The above does not work because there is no onrun in docker-compose services.
All I want to do is create a database if it does not exist but this is insanely difficult because I don't know when the service is up.
Also it is not easy to do this in postgres. I tried mapping a volume so that an initdb.sql is ran:
volumes:
- postgres:/data/postgres
- ./initdb/1_schema.sql:/docker-entrypoint-initdb.d/1_schema.sql
1_schema.sql looks like this:
SELECT datname
FROM pg_database
WHERE datname='premiership'';
IF datname='
premiership'
THEN CREATE DATABASE premiership PASSWORD 'test';
END IF;
THe database is not created and when I run docker-compose logs I don't see anything about running the script.
Have you tried setting POSTGRES_DB variable in your docker-compose.yml environment ?
image: postgres
environment:
POSTGRES_USER: ${POSTGRES_USER:-postgres}
POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-changeme}
POSTGRES_DB: premiership
PGDATA: /data/postgres
volumes:
see https://hub.docker.com/_/postgres :
POSTGRES_DB
This optional environment variable can be used to define a different
name for the default database that is created when the image is first
started. If it is not specified, then the value of POSTGRES_USER will
be used.