I am on a Mac.
I pulled the postgres docker image by running:
docker pull postgres:12.4
Then I start the container by running:
docker run --rm --name pg-docker -e POSTGRES_PASSWORD=pass -d -p 5432:5432 -v $HOME/docker/volumes/postgres:/var/lib/postgresql/data postgres
I can confirm the container is running:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6ef29362b6f3 postgres "docker-entrypoint.s…" 4 minutes ago Up 4 minutes 0.0.0.0:5432->5432/tcp pg-docker
I installed only psql on the host and when I try to connect to the postgres, I get the following error:
psql -h localhost -U postgres -d postgres
psql: error: could not connect to server: FATAL: password authentication failed for user "postgres"
password retrieved from file "/Users/me/.pgpass"
I am actually following the steps as outline in this post
I am not sure what is going wrong or how to fix this. Any ideas?
I'm trying to connect postgresql and pgadmin4 work together.
pgadmin4 works fine but when I try to create a new server I have 2 problems:
if the postgres container is at other port that is not 5432 it dont recognize that port. It show this error: could not connect to server: Connection refused
Is the server running on host "172.17.0.5" and accepting
TCP/IP connections on port 5431?
if the postgres container is at port 5432 the error is FATAL: password authentication failed for user "example".
I execute this command to get postgres container: docker run -p 5431:5432 --name postgres2 -e POSTGRES_PASSWORD=ad1234 -d postgres.
I try, following other responses in stackoverflow, adding this command -c"listen_addresses='*'" and I enter in the config file too but noone of this work to me.
Hope you can help me, thanks.
EDIT [Solved]
Ok I solved, it was a big fail by my part. I was using 172.17.0.5 (the IP container address) and what I need to use to connect is 172.17.01 (the Gateway).
Thanks for you time.
I have reproduce your scenario this way:
# docker run -p 5431:5432 --name postgres2 -e POSTGRES_PASSWORD=ad1234 -d postgres
# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
d4030c577a24 postgres "docker-entrypoint.s…" 2 minutes ago Up 2 minutes 0.0.0.0:5431->5432/tcp postgres2
# sudo -u postgres psql -h localhost -p 5431
could not change directory to "/root": Permission denied
Password:
psql (10.5, server 11.2 (Debian 11.2-1.pgdg90+1))
WARNING: psql major version 10, server major version 11.
Some psql features might not work.
Type "help" for help.
postgres=# CREATE DATABASE mytestdb;
CREATE DATABASE
postgres=# \q
Now starting docker for pgadmin and being able to connect to postgresql:
docker run -p 80:80 --link postgres2 -e "PGADMIN_DEFAULT_EMAIL=user#domain.com" -e "PGADMIN_DEFAULT_PASSWORD=SuperSecret" -d dpage/pgadmin4
With the above command you can link the postgres2 docker to the pgadmin docker and then on creating a connection on pgadmin4 you should use:
host name/address: postgres2
port: 5432
Maintenance database: postgres
username: postgres
with that, I've connected to Postgres from pgadmin4
As far as I know, docker PostgreSQL comes by default with localhost only connection and if you want to add remote connection you should add "listen_addresses = '*'" to postgresql.conf
I am trying to deploy Hyperledger Iroha in Docker environment for running a single instance as per the guidelines given in 5.3.1 section at
https://iroha.readthedocs.io/en/latest/guides/deployment.html#running-single-instance
However, I am getting below error.
NOTE: IROHA_POSTGRES_HOST should match 'host' option in config file
wait-for-it.sh: waiting 30 seconds for 127.0.0.1:5432
wait-for-it.sh: timeout occurred after waiting 30 seconds for 127.0.0.1:5432
[2019-01-02 11:33:20.406202853][th:80][info] MAIN start
[2019-01-02 11:33:20.406373949][th:80][info] MAIN config initialized
[2019-01-02 11:33:20.407157701][th:80][info] IROHAD created
[2019-01-02 11:33:20.407215609][th:80][info] StorageImpl:initConnection Start st
[2019-01-02 11:33:20.407363960][th:80][info] StorageImpl:initConnection block st
terminate called after throwing an instance of 'soci::soci_error'
what(): Cannot establish connection to the database.
could not connect to server: Connection refused
Is the server running on host "127.0.0.1" and accepting
TCP/IP connections on port 5432?
But I tested whether postgres server is running in my system or not using psql command. I am able to connect to postgres server from command prompt using psql command.
The iroha config file contents are as follows.
{
"block_storage_path":"/tmp/block_store",
"torii_port" : 50051,
"internal_port" : 10001,
"pg_opt" : "host=127.0.0.1 port=5432 user=postgres password=abc123",
"max_proposal_size" : 10,
"proposal_delay" : 5000,
"vote_delay" : 5000,
"mst_enable" : false
}
And the command i used for running iroha daemon is as follows.
iroha$ sudo docker run --name iroha2 -p 50051:50051 -v /home/user/iroha/example:/opt/iroha_data -v blockstore:/tmp/block_store -e IROHA_POSTGRES_HOST='127.0.0.1' -e POSTGRES_PORT='5432' -e POSTGRES_PASSWORD='abc123' -e POSTGRES_USER='postgres' -e KEY=node0 --network=iroha-network hyperledger/iroha:latest
Please note that you are trying to run Iroha node inside docker container, thus inside docker network. Postgres instance running on host machine will not be reachable from docker container.
I suggest you running two docker containers: Postgres and Iroha. They will be in the same network, thus they will see each other.
In the link that you provided above, there are instructions for that.
docker run --name some-postgres \
-e POSTGRES_USER=postgres \
-e POSTGRES_PASSWORD=mysecretpassword \
-p 5432:5432 \
--network=iroha-network \
-d postgres:9.5
And do not forget to change postgres host in your config file
I have successfully built a postgres-based Docker image that enables PostGIS:
The I run it:
docker run -d -t -p 5432:5432 -v ./data:/data --name postgis-osm-pgrouting -e POSTGRES_PASSWORD=postgres pamtrak06/postgis-pgrouting-osm bash
However, when I try to connect to the database via psql:
psql -h localhost -p 5432 postgres
I get an error:
psql: server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
I am a beginner with the port forwarding, but it looks like a port-related issue to me.
Any ideas?
To access an application from within your container you need to first "attach" to that container.
You can do so by running the command:
docker exec -it container_name sh
What this command does is it runs the command sh inside the container container_name
It will prompt a shell terminal where you can now run your psql command like this:
psql -U postgres
Where here you're running psql with the user postgres (default authorized user for psql)
try this
docker run -d -t -p 5432:5432 -v $PWD/data:/data --name postgis-osm-pgrouting -e POSTGRES_PASSWORD=postgres pamtrak06/postgis-pgrouting-osm
and then
psql -h localhost -p 5432 postgres
You've got:
psql: could not connect to server: Connection refused
Is the server running on host "192.168.99.101" and accepting
TCP/IP connections on port 5432?
So apply [Configure PostgreSQL to accept TCP/IP connections][https://www.mozmorris.com/2011/11/15/configure-postgresql-to-accept-tcpip-connections.html], but not in production, for tests purpose only !
And override your Dockerfile with this configuration
I'm trying to use a Docker container to run a PostgreSQL server, and connect with it from my host machine.
My configuration is:
Host machine: Mac OS X 10.10.5
Docker 1.10.1
I've done this:
Step 1: create a volume for permanent postgres data
docker volume create --name postgres_data
Step 2: Start the postgres instance
UPDATE: As suggested in comments, I specified port mapping when running the container
docker run --name my_postgres_container -e POSTGRES_PASSWORD=my_password -v postgres_data:/var/lib/postgresql/data -p 5432:5432 -d postgres:9.1
Step 3: connect to Docker instance by doing this:
docker run -it --link my_postgres_container:postgres --rm postgres:9.1 sh -c 'exec psql -h "$POSTGRES_PORT_5432_TCP_ADDR" -p "$POSTGRES_PORT_5432_TCP_PORT" -U postgres'
But I want to connect to that instance just by:
psql -h localhost -p 5432 -U postgres
Like if I had installed Postgres locally in my host machine.
The problem is port 5432 is not exposed. So, I can't connect with it:
sudo lsof -i -P | grep -i "listen" --> no port 5432 open
UPDATE 2: Even stranger. I've also done this:
Stop Docker. Then, run a normal PostgreSQL 9.4.4 instance in my host machine (no docker involved here, just postgres running in my Mac OS X host, listening on port 5432). Everything is normal:
sudo lsof -i -P | grep -i "postgres"
postgres 14100 jorge 6u IPv4 0x780274158cebef01 0t0 TCP localhost:5432 (LISTEN)
I can connect with my local postgres instance without any problem (look the output of the command: is the postgres compiled for Mac OS X, my host):
psql -h localhost -U postgres -c "select version()"
version
---------------------------------------------------------------------------------------------------------------------------------------
PostgreSQL 9.4.4 on x86_64-apple-darwin14.3.0, compiled by Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn), 64-bit
(1 row)
Now the fun part. I start my Docker instance again, while the host PostgreSQL instance is running.
It starts! (and it shouldn't). I can even connect using docker run...
docker run -it --link my_postgres_instance:postgres --rm postgres:9.1 sh -c 'exec psql -h "$POSTGRES_PORT_5432_TCP_ADDR" -p "$POSTGRES_PORT_5432_TCP_PORT" -U postgres'
If I run select version() now, it shows postgres running inside my docker instance at the same time postgres is running in my host, out of docker, using the same 5432 port. (Look at the ouput, is postgres compiled for Debian, the OS inside the postgres:9.1 container)
postgres=# select version();
version
------------------------------------------------------------------------------------------------
PostgreSQL 9.1.20 on x86_64-unknown-linux-gnu, compiled by gcc (Debian 4.9.2-10) 4.9.2, 64-bit
(1 row)
Why?
Does it make sense? My final goal is to run a Django app in another Docker container and connect with my Postgres instance. How could I do that?
It's 2018 and I just had a similar problem. The solution for me seemed to be with the order of props to docker. e.g. this resulted in no port being exposed;
docker run -d --name posttest postgres:alpine -e POSTGRES_PASSWORD=fred -p 5432:5432
while this worked fine (image exposed port 5432 as expected);
docker run --name posttest -d -p 5432:5432 -e POSTGRES_PASSWORD=fred postgres:alpine
Run the postgre image with the correct Port Mapping using -p <host_port>:<container_port>:
docker run --same-options-as-step-one -d -p 5432:5432 postgres:9.1
Your docker host is a virtual machine, which has it's own IP adddres.
You can detect this IP address by entering the following command:
docker-machine ip
The answer will be something like 192.168.99.100
When you have mapped the ports using the -p 5432:5432 switch, you will be able to connect to postgres with any tool from your dev machine using the IP address mentioned.
I was able to connect using container IP or host IP, except localhost (127.0.0.1).
To get container id run
docker ps
Find required container id and run
docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' <container_id>
Port must be exposed.
Here is an example of docker-compose.yml which starts two containers postgres and adminer, which is database management tool you can use to connect to postgres:
version: '3'
services:
adminer:
image: adminer
restart: always
ports:
- 8080:8080
postgres:
image: postgres:11.4-alpine
restart: always
ports:
- "5432:5432"
environment:
POSTGRES_USER: postgres
POSTGRES_PASSWORD: postgres
I had a similar issue. My problem was simply 0.0.0.0 not mapping to localhost so I just had to add to psql
psql --host=0.0.0.0
This is presuming
docker port <container name>
outputs
5432/tcp -> 0.0.0.0:5432
Other answers work, but don't explain why they work.
Given the command:
psql -h localhost -p 5432:5432 -U postgres
localhost is actually a special value that tells psql to look for a unix socket connection, instead of going over TCP. We can't use unix sockets to connect to docker services.
Changing the command like so fixes it, by forcing TCP:
psql -h 127.0.0.1 -p 5432:5432 -U postgres
That will work as long as you docker run ... -p 5432:5432 .... Specifying the IP returned by docker-machine ip also forces TCP, so that also works.
I had a similar problem working in a VMWare virtual machine with Lubuntu. The VM had been paused and then was restarted. The PostgreSQL Docker container was correctly mapped and listening on localhost:5432, but I always got:
psql: server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
Restarting the VM solved the problem in my case.
Try this to install postgresql
docker run --name postgres -d -p 5432:5432 -e POSTGRES_PASSWORD=fred postgres:alpine
Or Change port host machine Heree (mac)
docker run --name postgres -d -p 5436:5432 -e POSTGRES_PASSWORD=fred postgres:alpine
Tip:
Install pgadmin4
docker run -p 5050:80 -e "PGADMIN_DEFAULT_EMAIL=name#example.com" -e "PGADMIN_DEFAULT_PASSWORD=admin" -d dpage/pgadmin4