I run docker container with following command
docker run --name postgres14 -p 5432:5432 -e POSTGRES_USER=root -e POSTGRES_PASSWORD=pass -d postgres:14-alpine
And I want to connect to my Postgres database and get error
FATAL: role "root" does not exist
My connection to db:
How to connect to my db?
Ok , this issue occurs only in Mac m1. Solution is run port 5433:5432
In my postgres.dockerfile
FROM postgres:10
ENV POSTGRES_USERNAME postgrestest
ENV POSTGRES_PASSWORD 123456
ENV POSTGRES_DB dbtest
EXPOSE 5432
I use docker build to create the image and then a docker run to create the container
I use docker exec -it <container_name> psql -U
resonates the error psql: FATAL: role "root" does not exist
If use docker exec -it <container_name> psql -U postgrestest resonates the same error
The postgres user is defined with the environment variable POSTGRES_USER and not POSTGRES_USERNAME.
Source: https://hub.docker.com/_/postgres
So your Dockerfile should be:
FROM postgres:10
ENV POSTGRES_USER=postgrestest
ENV POSTGRES_PASSWORD=123456
ENV POSTGRES_DB=dbtest
EXPOSE 5432
And if you want to effectively login smoothly without having to add anything, I would advise you to use the environments variables PGUSERand PGDATABASE.
More on those here: https://www.postgresql.org/docs/current/libpq-envars.html
So with does I can do a smooth connection:
FROM postgres:10
ENV POSTGRES_USER=postgrestest
ENV PGUSER="$POSTGRES_USER"
ENV POSTGRES_PASSWORD=123456
ENV POSTGRES_DB=dbtest
ENV PGDATABASE="$POSTGRES_DB"
EXPOSE 5432
And then running it:
$ docker run --name psql -d $(docker build -q .)
a1a6ba06293b8f1e22a0d504b5368feb87595c5c4db7b0bafdb87279dc936a26
$ docker exec -ti psql psql
psql (10.15 (Debian 10.15-1.pgdg90+1))
Type "help" for help.
dbtest=#
I launch a container running PostgreSQL with the command:
docker run -p 5432:5432 -d -it -e POSTGRES_USER='postgres' -e POSTGRES_PASSWORD='postgres' -e POSTGRES_DB='thingsboard' --name postgres postgres
Then, I launch ThingsBoard providing some environment variables to use the PostgreSQL database:
docker run -it -p 9090:9090 -p 1883:1883 -p 5683:5683/udp -v ~/.mytb-data:/data -v ~/.mytb-logs:/var/logs/thingsboard --name thingsboard --restart always -e SPRING_DATASOURCE_URL=jdbc:postgresql://<MY_LOCAL_IP>:5432/thingsboard -e SPRING_DATASOURCE_USERNAME=postgres -e SPRING_DATASOURCE_PASSWORD=postgres thingsboard/tb-postgres
where <MY_LOCAL_IP> is my IP address on the local network. I checked PostgreSQL, which actually binds to <MY_LOCAL_IP>:5432 (verified through PGAdmin).
The thingsboard container returns an error:
I expect ThingsBoard itself to create the tables in the thingsboard database, but it seems that it doesn't appen so. Any guess on the possible cause of this error? Thanks.
It seems that the problem is given by the volumes: mytb-data and mytb-logs have been created before and are not empty. The containers work as long as we launch thingsboard with:
docker run -it -p 9090:9090 -p 1883:1883 -p 5683:5683/udp --name thingsboard --restart always -e SPRING_DATASOURCE_URL=jdbc:postgresql://<MY_LOCAL_IP>:5432/thingsboard -e SPRING_DATASOURCE_USERNAME=postgres -e SPRING_DATASOURCE_PASSWORD=postgres thingsboard/tb-postgres
i have been trying out docker container for postgres. So far i have not been able to connect to the database inside the container.
My steps to recreate the problem below.
dockerfile start
FROM postgres
ENV POSTGRES_DB db
ENV POSTGRES_USER postgres
ENV POSTGRES_PASSWORD postgres
COPY db_schema.sql /docker-entrypoint-initdb.d/
I built the docker file like so
$ docker build -t db_con .
And created a container
$ docker run -it -p 5432:5432 --name test_db db_con /bin/bash
View of running container as below
$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
82347f1114c4 db "docker-entrypoint..." 3 hours ago Up 2 sec 0.0.0.0:5432->5432/tcp test_db
I inspected the container for the address info..
$ docker inspect test_db
--extract start--
"Networks": {
"bridge": {
"Gateway": "172.17.0.1",
"IPAddress": "172.17.0.2",
}
}
--extract end--
Now, i have tried within the container, but i have NOT been successful.
I have tried all the commands below with the error below.
root#82347f1114c4:/# psql -U postgres -h 0.0.0.0 -p 5432 -d db
root#82347f1114c4:/# psql -U postgres -h 172.17.0.1 -p 5432 -d db
root#82347f1114c4:/# psql -U postgres -h 172.17.0.2 -p 5432 -d db
**response for all the above**
psql: could not connect to server: Connection refused
Is the server running on host "0.0.0.0" and accepting
TCP/IP connections on port 5432?
I will be delighted if anyone can point me in the right direction. I've hit a wall here, any assistance is much appreciated.
it looks like you override default postgres cmd to /bin/bash.
Why do you put /bin/bash at the end of command?
docker run -it -p 5432:5432 --name test_db db_con /bin/bash
Try to execute
docker run -it -p 5432:5432 --name test_db db_con
Also, postgres will be available only when db dump was restored.
You need to add a new rule in your pg_hba.conf:
nano /etc/postgresql/9.3/main/pg_hba.conf
Add:
host all all [Docker Server IP]/16 md5
Next, you need to uncomment the follow line in the postgres.conf:
listen_addresses = '*' # what IP address(es) to listen on;
Now restart your postgres service, and try again.
I would like to use the psql in the postgres image in order to run some queries on the database.
But unfortunately when I attach to the postgres container, I got that error the psql command is not found...
For me a little bit it is a mystery how I can run postgre sql queries or commands in the container.
How run the psql command in the postgres container? (I am a new guy in Docker world)
I use Ubuntu as a host machine, and I did not install the postgres on the host machine, I use the postgres container instead.
docker-compose ps
Name Command State Ports
---------------------------------------------------------------------------------------------
yiialkalmi_app_1 /bin/bash Exit 0
yiialkalmi_nginx_1 nginx -g daemon off; Up 443/tcp, 0.0.0.0:80->80/tcp
yiialkalmi_php_1 php-fpm Up 9000/tcp
yiialkalmi_postgres_1 /docker-entrypoint.sh postgres Up 5432/tcp
yiialkalmi_redis_1 docker-entrypoint.sh redis ... Up 6379/tcp
Here the containers:
docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
315567db2dff yiialkalmi_nginx "nginx -g 'daemon off" 18 hours ago Up 3 hours 0.0.0.0:80->80/tcp, 443/tcp yiialkalmi_nginx_1
53577722df71 yiialkalmi_php "php-fpm" 18 hours ago Up 3 hours 9000/tcp yiialkalmi_php_1
40e39bd0329a postgres:latest "/docker-entrypoint.s" 18 hours ago Up 3 hours 5432/tcp yiialkalmi_postgres_1
5cc47477b72d redis:latest "docker-entrypoint.sh" 19 hours ago Up 3 hours 6379/tcp yiialkalmi_redis_1
And this is my docker-compose.yml:
app:
image: ubuntu:16.04
volumes:
- .:/var/www/html
nginx:
build: ./docker/nginx/
ports:
- 80:80
links:
- php
volumes_from:
- app
volumes:
- ./docker/nginx/conf.d:/etc/nginx/conf.d
php:
build: ./docker/php/
expose:
- 9000
links:
- postgres
- redis
volumes_from:
- app
postgres:
image: postgres:latest
volumes:
- /var/lib/postgres
environment:
POSTGRES_DB: project
POSTGRES_USER: project
POSTGRES_PASSWORD: project
redis:
image: redis:latest
expose:
- 6379
docker exec -it yiialkalmi_postgres_1 psql -U project -W project
Some explanation
docker exec -it
The command to run a command to a running container. The it flags open an interactive tty. Basically it will cause to attach to the terminal. If you wanted to open the bash terminal you can do this
docker exec -it yiialkalmi_postgres_1 bash
yiialkalmi_postgres_1
The container name (you could use the container id instead, which in your case would be 40e39bd0329a )
psql -U project -W project
The command to execute to the running container
U user
W Tell psql that the user needs to be prompted for the password at connection time. This parameter is optional. Without this parameter, there is an extra connection attempt which will usually find out that a password is needed, see the PostgreSQL docs.
project the database you want to connect to. There is no need for the -d parameter to mark it as the dbname when it is the first non-option argument, see the docs: -d "is equivalent to specifying dbname as the first non-option argument on the command line."
These are specified by you here
environment:
POSTGRES_DB: project
POSTGRES_USER: project
POSTGRES_PASSWORD: project
This worked for me:
goto bash :
docker exec -it <container-name> bash
from bash :
psql -U <dataBaseUserName> <dataBaseName>
or just this one-liner :
docker exec -it <container-name> psql -U <dataBaseUserName> <dataBaseName>
helps ?
After the Postgres container is configured using docker, open the bash terminal using:
docker exec -it <containerID>(postgres container name / ID) bash
Switch to the Postgres user:
su - postgres
Then run:
psql
It will open the terminal access for the Postgres.
If you need to restore the database in a container you can do this:
docker exec -i app_db_1 psql -U postgres < app_development.back
Don't forget to add -i.
:)
You can enter inside the postgres container using docker-compose by typing the following
docker-compose exec postgres bash
knowing that postgres is the name of the service. Replace it with the name of the Postgresql service in you docker-compose file.
if you have many docker-compose files, you have to add the specific docker-compose.yml file you want to execute the command with. Use the following commnand instead.
docker-compose -f < specific docker-compose.yml> exec postgres bash
For example if you want to run the command with a docker-compose file called local.yml, here the command will be
docker-compose -f local.yml exec postgres bash
Then, use psql command and specify the database name with the -d flag and the username with the -U flag
psql -U <database username you want to connect with> -d <database name>
Baammm!!!!! you are in.
If you have running "postgres" container:
docker run -it --rm --link postgres:postgres postgres:9.6 sh -c "exec psql -h \$POSTGRES_PORT_5432_TCP_ADDR -p \$POSTGRES_PORT_5432_TCP_PORT -U postgres"
We can enter the container with a terminal sh or bash by using,
docker run -it <container id | name> <sh | bash>
if assume it is sh,
psql -U postgres
will work
RUN /etc/init.d/postgresql start &&\
psql --command "CREATE USER docker WITH SUPERUSER PASSWORD 'docker';" &&\
createdb -O docker docker &&\
Just fired up a local test, not sure if -c is what you were after from the cli.
docker run -it --rm --name psql-test-connection -e PGPASSWORD=1234 postgres psql -h kubernetes.docker.internal -U awx -c "\conninfo"
You are connected to database "awx" as user "awx" on host "kubernetes.docker.internal" (address "192.168.65.4") at port "5432".
In many common setups, the PostgreSQL port is published out to the host.
postgres:
ports:
- '12345:5432'
If this is the case, you don't need to do anything Docker-specific to connect to the database. You can use the psql client directly on your host system pointing to the first ports: number.
psql -h localhost -p 12345 -U project
This approach only requires psql or another ordinary PostgreSQL client be installed on the host and that the database container be configured with ports: making it accessible from outside Docker. (The ports: are not necessary for inter-container communication and a production-oriented setup could reasonably not have them.) This does not require the ability to run docker commands and the attendant security concerns, and it can avoid multiple layers of additional command quoting from a docker exec sh -c '...' sequence.
Without using an external terminal a person can run SQL commands within the container CLI.
psql -d [database-name] -U [username] -W
** Don't forget to replace [database-name] with your db-name & [username] with your actual username
Flags:
-d : Specify the database name you want to connect
-U : Specify the username as whom you want to connect
-W : Prompt for the password