I want to set the variable lower_case_table_names to 1 in the MySQL 5.6 docker container.
I put the variable in the my.cnf file [mysqld] under /etc/mysql in the container.
After stopping the container it didn't start giving this error:
unknown variable lower_case_table_names=1
So what I'm asking is there is an other way to set this variable to 1 ?
I hope you already found your answer, but something like this works:
docker run -p 3306:3306 mysql:5.6 -e MYSQL_ALLOW_EMPTY_PASSWORD=1 mysqld --lower_case_table_names=1
For docker-compose, this works:
services:
db:
image: mysql:5.7
restart: always
command: --lower_case_table_names=1
environment:
MYSQL_DATABASE: 'test'
Related
I am trying to docker-compose up -d the docker-compose.yml below.
The first container is a mariadb with an sql script to init the database schema.
The second container is a nestjs application.
When I run docker-compose up -d the first container is completely ignored, and it starts trying to boot the second container up, which eventually leads to the startup of the nestjs app failing due to the missing database connection.
I'm failing to understand why docker-compose goes straight to initializing the server container, since if I manually start server-db container it does start up.
The actual logs from the docker-compose up -d
Deploying 'Compose: integration'...
"C:\Program Files\Docker\Docker\resources\bin\docker-compose.exe" -f D:\dev\projects\integration\docker-compose.yml up -d --build
Building server
I am on Docker Engine v20.10.5 for windows.
version: '3.3'
services:
server-db:
image: mariadb:10.3
restart: always
environment:
MYSQL_DATABASE: 'serverdb'
MYSQL_USER: 'serverdb'
MYSQL_PASSWORD: 'serverdb'
MYSQL_ROOT_PASSWORD: 'root'
command: --init-file /data/application/init.sql
ports:
- '3306:3306'
volumes:
- ./serverdb/database/init.sql:/data/application/init.sql
server:
build: ./server
ports:
- '8080:3000'
depends_on:
- server-db
I can't get environmental variables in a docker-compose file written directly in it to work. A similar configuration with the command line work just fine like this:
docker run --name container_name -d --network=my-net --mount type=bind,src=/Users/t2wu/Documents/Work/Dodo/Intron-Exon_expression/DockerCompose/intronexon_db/mnt_mysql,dst=/var/lib/mysql -e MYSQL_DATABASE=db_name -e MYSQL_USER=username -e MYSQL_PASSWORD=passwd mysql/mysql-server:8.0.13
This is an MySQL instance which sets three environmental variables: MYSQL_DATABASE, MYSQL_USER and MYSQL_PASSWORD. I'm later able to launch bash into it docker exec -it container_name bash and launch the client mysql -u username -p and connects just fine.
However when I write it in a docker-compose.yml:
version: "3.7"
services:
intronexon_db:
image: mysql/mysql-server:8.0.13
volumes:
- type: bind
source: ./intronexon_db/mnt_mysql
target: /var/lib/mysql
environment:
MYSQL_DATABASE: db_name
MYSQL_USER: username
MYSQL_PASSWORD: passwd
networks:
- my-net
networks:
my-net:
driver: bridge
Then when I use the mysql client, it's as if the user doesn't exist. How do I set it so that it is equivalent to the -e flag during docker run?
EDIT
docker-compose --version shows docker-compose version 1.24.1, build 4667896b
EDIT 2
The environmental flag did work. But I run into problem because:
Part of the problem was that it takes MySQL sometime to get the database, username and password setup ready. And I was checking it way too early.
I need to specify localhost for some reason: mysql --host=localhost -u user -p. Specifying 127.0.0.1 will not work.
For some unknown reason the example stack.yml from the official docker image did not have to specify --host when the adminer container is run. If I wipe out the adminer, then --host flag needs to be given.
Sometimes MySQL daemon will stop. It might has to do with my mount target /var/lib/mysql but I'm not certain.
command: --default-authentication-plugin=mysql_native_password is actually significant. I don't know why when I did docker run I didn't need to do anything about this.
docker-compose accept both types of ENVs either an array or a dictionary, better to double or try both approaches.
environment
Add environment variables. You can use either an array or a
dictionary. Any boolean values; true, false, yes no, need to be
enclosed in quotes to ensure they are not converted to True or False
by the YML parser.
Environment variables with only a key are resolved to their values on
the machine Compose is running on, which can be helpful for secret or
host-specific values.
environment:
RACK_ENV: development
SHOW: 'true'
SESSION_SECRET:
or
environment:
- RACK_ENV=development
- SHOW=true
- SESSION_SECRET
Might be something with docker-compose version as it working fine with 3.1. as the offical image suggested, so Better to try offical image docker-compose.yml
version: '3.1'
services:
db:
image: mysql
command: --default-authentication-plugin=mysql_native_password
restart: always
environment:
MYSQL_ROOT_PASSWORD: example
Also, better to debug such cases where everything seems correct but some minor syntax is missing. you can test it before working with DB.
version: "3.7"
services:
intronexon_db:
image: alpine
environment:
MYSQL_DATABASE: myDb
command: tail -f /dev/null
run docker-compose up
Now test and debug in testing enviroment.
docker exec -it composeenv_intronexon_db_1 ash -c "printenv"
the environment params in your yml need the - in front of them could be the likely culprit
version: "3.7"
services:
intronexon_db:
image: mysql/mysql-server:8.0.13
volumes:
- ./intronexon_db/mnt_mysql:/var/lib/mysql
environment:
- MYSQL_DATABASE: db_name
- MYSQL_USER: username
- MYSQL_PASSWORD: passwd
networks:
- my-net
networks:
my-net:
driver: bridge
I'm trying to run mysql under container with mysql parameters i defined on docker-compose.yml file. But i have an access denied when i run :
mysql -utest -ptest
I'm only able to connect with mysql -uroot -proot.
Help me please.
Thanks.
mysql:
container_name: mysql
image: mysql
restart: always
volumes:
- .docker/data/db:/var/lib/mysql
environment:
MYSQL_DATABASE: app
MYSQL_ROOT_PASSWORD: test
MYSQL_USER: test
MYSQL_PASSWORD: test
Try to launch with specified database name like this:
mysql -u test -p test app
Explanation:
MYSQL_USER, MYSQL_PASSWORD
These variables are optional, used in conjunction to create a new user and to set that user's password. This user will be granted superuser permissions (see above) for the database specified by the MYSQL_DATABASE variable. Both variables are required for a user to be created.
From MySQL docker hub page
Permissions are granted only for the database specified by environment variable. When you try to log into default database you have no permissions to it only for app database.
My complete docker-compose file.
version: '3.2'
services:
apache:
container_name: apache
build: .docker/apache/
restart: always
volumes:
- .:/var/www/html/app/
ports:
- 80:80
depends_on:
- php
- mysql
links:
- mysql:mysql
php:
container_name: php
build: .docker/php/
restart: always
volumes:
- .:/var/www/html/app/
working_dir: /var/www/html/app/
mysql:
container_name: mysql
image: mysql
restart: always
volumes:
- .docker/data/db:/var/lib/mysql
environment:
MYSQL_DATABASE: app
MYSQL_ROOT_PASSWORD: test
MYSQL_USER: test
MYSQL_PASSWORD: test
Maybe you could try attaching an interactive bash process to the already running container by following these steps:
Get your container id or name from running docker container ls in your terminal (I'm talking about the mysql container, which should have the mysql name according to your docker-compose.yml file)
Run docker exec -it mysql bash to associate an interactive bash process to the running container
Now, being inside of your container's filesystem, run mysql --user=test --password=test and you should be able to get on with your work
I know the question has been asked in various situations, but I'm still stucked despite everything I read on the Internet.
I want to have a script executed after the container "mywebsite" is built and I used ENTRYPOINT for that and I know that in normal use, after the ENTRYPOINT command is executed, the container "mywebsite" exit. I tried several tricks to avoid exit, unfortunately without success.
In my DOCKERFILE I have this :
FROM php:7.1.17-apache
[...]
WORKDIR /var/www
COPY docker-entrypoint.sh /var/www/docker-entrypoint.sh
ENTRYPOINT ["sh", "/var/www/docker-entrypoint.sh"]
Then in my docker-entrypoint.sh I have this :
#!/bin/bash
set -e
cd www
chown -R www-data:www-data sites modules themes
exec "$#"
And here is my docker-compose.yml :
version: '3.3'
services:
mywebsite:
build: .
extra_hosts:
- "mywebsite.local:127.0.0.1"
hostname: mywebsite
domainname: local
ports:
- 8088:80
volumes:
- ./www:/var/www/www
- ./vendor:/var/www/vendor
- ./scripts:/var/www/scripts
links:
- database:database
restart: always
tty: true
database:
image: mysql:5.5.49
container_name: mysql-container
ports:
- 3307:3306
volumes:
- ./www/dumps/mywebsite.sql:/docker-entrypoint-initdb.d/dump.sql
restart: always
command: --max_allowed_packet=32505856
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_DATABASE: mywebsite
When build, all steps are fine, and everything is set properly, but the container "mywebsite" keep exiting. (The "database" service is running fine)
I haded tty: true and exec "$#" but none of that works.
You can end with command like tail -f /dev/null
I often use this directly in my docker-compose.yml with command: tail -f /dev/null. And it is easy to see how I keep the container running.
I had the same problem when creating my own image from a postgis-image. The problem was that I added an entrypoint. When I removed the entrypoint, build the image again, docker-compose does start my container and postgis was accepting connections.
dockerfile
FROM postgis/postgis:12-master
COPY organisation.sql
#ENTRYPOINT ["docker-entrypoint.sh"] #This was the problem
In docker-compose I did not need command's or tty.
version: "3.7"
services:
mydb:
image: mydb:latest
container_name: mytest
ports:
- "5432:5432"
environment:
POSTGRES_DB: postgres
POSTGRES_USER: postgres
POSTGRES_PASSWORD: secret
I am trying to create a mysql database schema during the docker-compose.yml file is getting executed
version: "2"
services:
web:
build: docker
ports:
- "8080:8080"
environment:
- MYSQL_ROOT_PASSWORD=root
mysql:
image: mysql:latest
environment:
- MYSQL_ROOT_PASSWORD=root
- MYSQL_DATABASE=test
ports:
- "3306:3306"
links:
- web
onrun:
command: "docker exec -i test_mysql_1 mysql -uroot -proot test <dummy1.sql"
I tried onrun but this is not working .
i am building the first image but pulling the second image from the docker hub.
kindly help in how to execute the following command after the docker-compose up
There is nothing like onrun in docker-compose. It will only bring up the containers and execute the command. Now you have few possible options
Use mysql Image Initialization
mysql:
image: mysql:latest
environment:
- MYSQL_ROOT_PASSWORD=root
- MYSQL_DATABASE=test
volumes:
- ./dummy1.sql:/docker-entrypoint-initdb.d/dummy1.sql
ports:
- "3306:3306"
You may your sql files inside /docker-entrypoint-initdb.d inside the container
Use bash script
docker-compose up -d
# Give some time for mysql to get up
sleep 20
docker-compose exec mysql mysql -uroot -proot test <dummy1.sql
Use another docker service to initialize the DB
version: "2"
services:
web:
build: docker
ports:
- "8080:8080"
environment:
- MYSQL_ROOT_PASSWORD=root
mysql:
image: mysql:latest
environment:
- MYSQL_ROOT_PASSWORD=root
- MYSQL_DATABASE=test
ports:
- "3306:3306"
mysqlinit:
image: mysql:latest
volumes:
- ./dummy1.sql:/dump/dummy1.sql
command: bash -c "sleep 20 && mysql -h mysql -uroot -proot test < /dump/dummy1.sql"
You run another service which will init the DB for you, like mysqlinit in the above one
When a container is started for the first time, a new database with the specified name will be created and initialized with the provided configuration variables. Furthermore, it will execute files with extensions .sh, .sql and .sql.gz that are found in /docker-entrypoint-initdb.d. Files will be executed in alphabetical order.
From https://hub.docker.com/_/mysql/
That is the convenient way how many databases (postgresql, mysql, ...) are initializing themselves on container-creation. You should create a *.sql / *.sh file and bind it via volume into the new container:
db:
image: mysql:latest
volumes:
- ./db/entrypoint:/docker-entrypoint-initdb.d
environment:
- MYSQL_ROOT_PASSWORD=iamgroot
- MYSQL_DATABASE=gotg
This loads all your sql / sh files into the container which are then automatically executed.