I'm using the official MariaDB container. I need binary logs in mixed format, which I currently do by running:
docker run -it --link mariadb:mysql --rm mariadb sh -c 'exec mysql -h"$MYSQL_PORT_3306_TCP_ADDR" -P"$MYSQL_PORT_3306_TCP_PORT" -uroot -p"$MYSQL_ENV_MYSQL_ROOT_PASSWORD"'
and then
SET GLOBAL binlog_format = 'MIXED';
However if I restart the container I have to do it again. Is there a way to enable it by default?
Related
I want to start three RabbitMQ containers that will be joined together in a cluster. I want to keep it simple and not define complex Dockerfiles with specific volumes.
This is what I am doing right now:
docker network create rabbits
docker run -d --rm --net rabbits --hostname rabbit-1 --name rabbit-1 -p 8081:15672 -e RABBITMQ_ERLANG_COOKIE=ASDF rabbitmq:3.8-management
docker run -d --rm --net rabbits --hostname rabbit-2 --name rabbit-2 -p 8082:15672 -e RABBITMQ_ERLANG_COOKIE=ASDF rabbitmq:3.8-management
docker run -d --rm --net rabbits --hostname rabbit-3 --name rabbit-3 -p 8083:15672 -e RABBITMQ_ERLANG_COOKIE=ASDF rabbitmq:3.8-management
When I then try to tell the nodes to join each other with the following commands, I get an error message:
docker exec -it rabbit-2 rabbitmqctl stop_app
docker exec -it rabbit-2 rabbitmqctl reset
docker exec -it rabbit-2 rabbitmqctl join_cluster rabbit#rabbit-1
docker exec -it rabbit-2 rabbitmqctl start_app
docker exec -it rabbit-2 rabbitmqctl cluster_status
This results in:
RABBITMQ_ERLANG_COOKIE env variable support is deprecated and will be REMOVED in a future version. Use the $HOME/.erlang.cookie file or the --erlang-cookie switch instead.
However I do not know how to pass this switch. When I add this to the docker run command it does not work. So i thought maybe add this after the join_cluster command, but then the cookie is already set.
How do I need to change the docker run command?
In response to your and other questions about RABBITMQ_ERLANG_COOKIE, I opened this issue:
https://github.com/rabbitmq/rabbitmq-server/issues/7262
Currently you should use the environment variable and disregard the warning.
The best practice is to use docker compose and your own image based off of the official RabbitMQ images:
https://github.com/lukebakken/docker-rabbitmq-cluster/blob/main/docker-compose.yml
https://github.com/lukebakken/docker-rabbitmq-cluster/blob/main/rmq/Dockerfile
NOTE: the RabbitMQ team monitors the rabbitmq-users mailing list and only sometimes answers questions on StackOverflow.
The RABBITMQ_ERLANG_COOKIE environment variable is no longer used in RabbitMQ starting from version 3.7.0. Instead, you can set the Erlang cookie value by using the -e option in the docker run command and setting the RABBITMQ_ERLANG_COOKIE environment variable to your desired value. Here's an example:
docker run -d --name rabbitmq -e RABBITMQ_ERLANG_COOKIE='your_cookie_value' rabbitmq:3
Alternatively, you can store the Erlang cookie in a file and mount it as a volume in your container. For example:
Create a file named erlang.cookie with your desired cookie value
echo 'your_cookie_value' > erlang.cookie
Start the RabbitMQ container, mounting the erlang.cookie file
docker run -d --name rabbitmq -v $(pwd)/erlang.cookie:/var/lib/rabbitmq/.erlang.cookie rabbitmq:3
I got a MariaDB database dump from a colleague, and he asked me to run it in a docker container.
So i executed the following:
docker pull mariadb:10.4.26
then created the container
docker run --name test_smdb -e MYSQL_ROOT_PASSWORD=<some_password> -p 3306:3306 -d mariadb:10.4.26
then connected to the container:
docker exec -it test_smdb mariadb --user root -p<some_password>
and created a database in it from the mariadb prompt:
MariaDB [(none)]> CREATE DATABASE smdb_dev;
So far, so good. But when i tried to import the dump into it via this command:
docker exec -i test_smdb mariadb -uroot -p<some_password> --force < C:\smdb-dev.sql
i get a lot of lines like
ERROR 1046 (3D000) at line 22: No database selected.
So i am not sure what exactly is the issue?
Should i define a database, in which the dump should be imported? If yes - how exactly, because i look at different pages, like:
https://hub.docker.com/_/mariadb, especially this:
$ docker exec -i some-mariadb sh -c 'exec mariadb -uroot -p"$MARIADB_ROOT_PASSWORD"' < /some/path/on/your/host/all-databases.sql
and i see no database mentioned here.
Or
2) The colleague has not created the dump in the correct way?
I do not use mariadb in a docker environment at my place, but I do use mariadb on a linux machine so it should be really similar.
You said you used this command :
docker exec -i test_smdb mariadb -uroot -p<some_password> --force < C:\smdb-dev.sql
If we breakthrough it :
docker exec -i test_smdb docker stuff where you ask docker to execute the following command on the test_smdb container (or close to it, I'm not a docker daily user).
mariadb -uroot -p<password> --force here is the interesting part. You ask your shell to open mariadb and login as root with then given password with an extra flag --force. But you never specify which database should be overridden.
In my gist, again for mariadb outside docker but I really think it should be the same, I've the following command mariadb -uusername -p<password> <DB_NAME> < /path/to/file.sql
So I would try something like :
docker exec -i test_smdb mariadb -uroot -p<some_password> smdb_dev --force < C:\smdb-dev.sql
Below command should work I believe
docker exec -i test_smdb sh -c "exec mariadb -uroot -pPASSWORD smdb_dev" < /some/path/on/your/host/all-databases.sql
Reference: Import local database to remote host Docker container
From within my docker pgadmin container, I want to access a postgresql backup file located in my windows10 OS.
So I'm trying to set up a shared directory.
Running this command works fine. Directory is linked to the container.
docker run --name=windows10 -d -v C:\Users\johndoe:/windows10 -p 5554:80 dpage/pgadmin4 -e PGADMIN_DEFAULT_EMAIL=john#doe.com -e PGADMIN_DEFAULT_PASSWORD=whatever
However, the directory won't mount because it's giving this error log on startup:
You need to specify PGADMIN_DEFAULT_EMAIL and PGADMIN_DEFAULT_PASSWORD environment variables
What is this sorcery??
Move the environment variables to before the image name
docker run --name=windows10 -d -v C:\Users\johndoe:/windows10 -p 5554:80 -e PGADMIN_DEFAULT_EMAIL=john#doe.com -e PGADMIN_DEFAULT_PASSWORD=whatever dpage/pgadmin4
-e is an option and must be specified between run and IMAGE (see https://docs.docker.com/engine/reference/commandline/run/)
Just basic and simple steps illustrating what I have tried:
docker pull mysql/mysql-server
sudo docker run -i -t mysql/mysql-server:latest /bin/bash
yum install vi
vi /etc/my.cnf -> bind-address=0.0.0.0
exit
docker ps
docker commit new_image_name
docker run --name mysql -p 3306:3306 -e MYSQL_ROOT_PASSWORD=secret -d new_image_name
docker ps -a STATUS - Exited (1)
Please let me know what I did wrong.
Instead of trying to modify an existing image, try and use (for testing) MYSQL_ROOT_HOST=%.
That would allow root login from any IP. (As seen in docker-library/mysql issue 241)
sudo docker run --name mysql -p 3306:3306 -e MYSQL_ROOT_PASSWORD=123456 -e MYSQL_ROOT_HOST=% -d mysql/mysql-server:latest
The README mentions:
By default, MySQL creates the 'root'#'localhost' account.
This account can only be connected to from inside the container, requiring the use of the docker exec command as noted under Connect to MySQL from the MySQL Command Line Client.
To allow connections from other hosts, set this environment variable.
As an example, the value "172.17.0.1", which is the default Docker gateway IP, will allow connections from the Docker host machine.
I have deis(1.5.2) with 3 host and I want "app" with database. I want to use postgres, so I found this docker image https://registry.hub.docker.com/_/postgres/ . I did deploy without problems, but I don't know how can I connect into this app/container (create some db, users) and link with other app/container. They write commands for it but it's for docker. So how can I run these commands from deis:
docker run --name some-app --link some-postgres:postgres -d application-that-uses-postgres
docker run -it --link some-postgres:postgres --rm postgres sh -c 'exec psql -h "$POSTGRES_PORT_5432_TCP_ADDR" -p "$POSTGRES_PORT_5432_TCP_PORT" -U postgres'
or do you have some other solution for using DB with deis?