Though I mount data on external volume, upon docker-compose down I am losing my data. I am using docker-compose version 1.14.0, build c7bdf9e and docker version 17.06.1-ce, build 874a737
# docker-compose.yml
version: '3'
services:
db:
image: postgres
volumes:
- data:/var/lib/postgres/data
web:
build: .
command: bundle exec rails s -p 3000 -b '0.0.0.0'
volumes:
- .:/myapp
ports:
- "3000:3000"
depends_on:
- db
volumes:
data:
external: true
Related
I have a project Spring Boot MVC and Mysql Database with Dockerfile and docker-compose.yml and I want to push this project to the hub docker that to run every client as you know. I pushed to the docker hub successfully with the docker-compose push command, but after that when I pull my image from the hub docker it doesn't work because there are some errors occurs for an instance connection refuesed and etc error happens. but in my device it work perfectly I mean I am runing my project successfully with the docker container.
This is my Dockerfile:
FROM maven:3.8.2-jdk-11
WORKDIR /empmanagment-app
COPY . .
RUN mvn clean install
CMD mvn spring-boot:run
and this is my docker-compose.yml file
version: '3'
services:
mysql-standalone:
image: 'mysql:5.7'
environment:
- MYSQL_ROOT_PASSWORD=root
- MYSQL_ROOT_USER=root
- MYSQL_PASSWORD=root
- MYSQL_DATABASE=elvin_emp_managment
ports:
- "3307:3306"
networks:
- common-network
volumes:
- mysql-standalone:/var/lib/mysql
springboot-docker-container:
build: ./
image: anar1501/emp-managment
ports:
- "8080:8080"
networks:
- common-network
environment:
SPRING_DATASOURCE_URL: jdbc:mysql://mysql-standalone:3306/elvin_emp_managment?autoReconnect=true&useSSL=false
SPRING_DATASOURCE_USERNAME: "root"
SPRING_DATASOURCE_PASSWORD: "root"
depends_on:
- mysql-standalone
volumes:
- .m2:/root/.m2
volumes:
mysql-standalone:
networks:
common-network:
driver: bridge
can anyone prefer any suggest, that what I am doing?
I read an instruction here
https://github.com/dahlsailrunner/northwind-core-api
and exec 2 commands everytime as it is written:
docker volume create --name northwind-pg-data -d local
docker-compose -f .\docker-compose-windows.yml up
But is it possible to add the 1st command to the docker-compose-windows.yml file and perform one command only?
There is the docker-compose file:
version: '3'
services:
db:
image: postgres:12
environment:
POSTGRES_DB: northwind
POSTGRES_USER: northwind_user
POSTGRES_PASSWORD: thewindisblowing
volumes:
- northwind-pg-data:/var/lib/postgresql/data
- ./northwind.sql:/docker-entrypoint-initdb.d/northwind.sql
ports:
- "5432:5432"
volumes:
northwind-pg-data:
external: true
I have an app that is working but I am getting problems to make it run on Azure.
I have the next docker-compose
version: "3.6"
services:
nginx:
image: nginx:alpine
volumes:
- ./:/var/www/
- ./setup/azure/nginx/conf.d/:/etc/nginx/template
environment:
PORT: ${PORT}
command: /bin/sh -c "envsubst '$${PORT}' < /etc/nginx/template/nginx.conf.template > /etc/nginx/conf.d/default.conf && nginx -g 'daemon off;'"
networks:
- mynet
depends_on:
- app
- worker
app:
image: myimage:latest
build:
context: .
dockerfile: ./setup/azure/Dockerfile
restart: unless-stopped
tty: true
expose:
- 9000
volumes:
- uploads:/var/www/simple/public/uploads
- logos:/var/www/simple/public/logos
networks:
- mynet
worker:
image: my_image:latest
command: bash -c "/usr/local/bin/php artisan queue:work --timeout=0"
depends_on:
- app
networks:
- mynet
volumes:
uploads:
logos:
networks:
mynet:
I am unsure if the volumes in nginx ok, I think that perhaps I should create a new Dockerfile to copy the files. However, this would increase a lot the size of the project.
When using App Services on azure the development is made assigning a randomly port, that's wgy i have the envsubst instruction in command. I appreciate any other suggestion to make it run this project on Azure
I'm assuming you're trying to persist the storage in your app to a volume. Check out this doc issue. Now I don't think you need
volumes:
- ./:/var/www/
- ./setup/azure/nginx/conf.d/:/etc/nginx/template
but for
volumes:
- uploads:/var/www/simple/public/uploads
- logos:/var/www/simple/public/logos
you can create a storage account, mount it to your linux app plan (it's not available for Windows app plans yet), and mount the relative path /var/www/simple/public/uploads to the file path of the storage container.
I'm new to docker and started to play with it on my small project.
I have dockerized the service itself with the following Docker file:
ROM adoptopenjdk:11-jdk-hotspot AS DEPENDENCIES_BUILD_IMAGE
ENV APP_HOME=/usr/app/
WORKDIR $APP_HOME
COPY build.gradle settings.gradle gradlew $APP_HOME
COPY gradle $APP_HOME/gradle
RUN ./gradlew build || return 0
COPY . .
RUN ./gradlew build
FROM adoptopenjdk/openjdk11:jdk-11.0.7_10-alpine AS FINAL
ENV JAR_TEMPLATE=myapp-0.0.1-SNAPSHOT.jar
ENV ARTIFACT_NAME=myapp.jar
ENV APP_HOME=/usr/app
WORKDIR $APP_HOME
COPY --from=DEPENDENCIES_BUILD_IMAGE $APP_HOME/build/libs/$JAR_TEMPLATE .
RUN mv $JAR_TEMPLATE $ARTIFACT_NAME
EXPOSE 8080
CMD ["java", "-jar", "budget-calculator.jar"]
Side note - I know that there's a problem that I'm always copying 0.0.1-SNAPSHOT - but I'm not sure how to solve it at the moment.
After that I wanted to connect my service to a Postgres DB with docker-compose using this confirmation:
version: '3'
services:
backend:
build: .
container_name: myapp
ports:
- "8080:8080"
links:
- "db"
depends_on:
- db
networks:
- backend
db:
restart: unless-stopped
image: postgres:10
container_name: myapp-db
environment:
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=secret
- POSTGRES_DB=myapp
ports:
- 5436:5436
networks:
- backend
networks:
backend:
After that I've updated my application.properties file to indicate that the DB link is on the other container as follow:
spring.flyway.url=jdbc:postgresql://db:5436/myapp
spring.flyway.user=postgres
spring.flyway.password=secret
spring.flyway.baseline-on-migrate=true
spring.datasource.url=jdbc:postgresql://db:5436/myapp
spring.datasource.username=postgres
spring.datasource.password=secret
spring.datasource.driverClassName=org.postgresql.Driver
Now I had 2 problems:
While I assumed that build: . will rebuild my image every time
that I'm running docker-compose up if something changed in
practice I saw that it's not the case.
When the backend service starts flyway (a migration DB library) try
to connect to the database and cannot resolve the connection.
I've seen online that the usage of - links is deprecated and I should use the networks but both do not seem to work - what am I missing?
There are 2 problems with my configurations, the first one - the internal port of Postgres was configured as 5436 while the default port of the image is 5432 (I've updated both of them to 5432)
the second one, in order to pass the IP of the DB to the service I've added the following environment variables to the service image:
environment: # Pass environment variables to the service
SPRING_DATASOURCE_URL: jdbc:postgresql://db:5432/budget
SPRING_DATASOURCE_USERNAME: postgres
SPRING_DATASOURCE_PASSWORD: secret
SPRING_FLYWAY_URL: jdbc:postgresql://db:5432/budget
SPRING_FLYWAY_USER: postgres
SPRING_FLYWAY_PASSWORD: secret
So my current working configuration is this:
version: '3.8'
services:
backend:
build: .
container_name: app-service
ports:
- "8080:8080"
depends_on:
- db
environment: # Pass environment variables to the service
SPRING_DATASOURCE_URL: jdbc:postgresql://db:5432/myapp
SPRING_DATASOURCE_USERNAME: postgres
SPRING_DATASOURCE_PASSWORD: secret
SPRING_FLYWAY_URL: jdbc:postgresql://db:5432/myapp
SPRING_FLYWAY_USER: postgres
SPRING_FLYWAY_PASSWORD: secret
db:
restart: unless-stopped
image: postgres:10
environment:
- POSTGRES_DB=myapp
- POSTGRES_PASSWORD=postgres
- POSTGRES_USER=secret
volumes:
- myapp_data:/var/lib/postgresql/data
ports:
- 5432:5432
volumes:
myapp_data:
I am running a postgres database generated by the below docker-compose file on Windows. Before running docker-compose up --build, I created a docker volume with docker volume --name postgresdata --driver local. The latter is done to avoid mounting a Windows folder into Postgres.
However, when I run docker-compose down followed by docker-compose up --build, the database is empty which I would not have expected. Any ideas or suggestions?
This is the docker-compose.yml file I am using:
version: '3.0'
services:
db:
image: postgres:latest
restart: always
ports:
- 5432:5432
env_file:
- env_file
volumes:
- postgresdata
networks:
- db1
market_data:
build: .
environment:
PYTHONUNBUFFERED: 'true'
stdin_open: true
tty: true
links:
- db:db
container_name: market_data_container
volumes:
- '.:/market_data'
depends_on:
- db
networks:
- db1
adminer:
image: adminer
restart: always
ports:
- 8080:8080
networks:
- db1
depends_on:
- db
volumes:
market_data:
postgresdata:
external: true
networks:
db1:
driver: bridge
Postgres uses already a volume to persist data, but docker-compose down deletes this volume. You are using named volumes in your compose file, but don't mount it correctly.
version: '3.0'
services:
db:
image: postgres:latest
restart: always
ports:
- 5432:5432
env_file:
- env_file
volumes:
- postgresdata:/var/lib/postgresql/data
networks:
- db1
Add the default path for postgres data to your volume postgresdata:/var/lib/postgresql/data. This should fix it.