Using Redis to serve data to unsafe docker container












0














I am making a webapp with docker, i need to run code made by public user (not safe at all), i use redis to push some data between my containers (using a socket shared in a named volume)



schema



How can i forbid unsafe containers to send data to Redis?



my docker-compose.yml



version: "3"

services:
redis:
image: redis:latest
command: >
sh -c "chown redis /tmp/redis/
redis-server /usr/local/etc/redis/redis.conf"
volumes:
- redis_socket:/tmp/redis
unsafe_container:
build:
context: ./docker
dockerfile: Dockerfile
command: python unsafe.py
volumes:
- redis_socket:/tmp/redis:ro
links:
- redis
depends_on:
- redis
data_in:
build:
context: ./docker
dockerfile: Dockerfile-data
command: >
sh -c "python3 /code/manage.py wait_db
python3 /code/manage.py start_dc"
volumes:
- redis_socket:/tmp/redis
links:
- redis
depends_on:
- redis
volumes:
redis_socket:


If i make a redis slave, can i set this one to only accept read from every connections except for the master redis?



Thanks



EDIT: After some tests, a slave is read only by default, but i can't connect the slave to the master using a socket, i dont find anything about this feature / issue on the docs










share|improve this question





























    0














    I am making a webapp with docker, i need to run code made by public user (not safe at all), i use redis to push some data between my containers (using a socket shared in a named volume)



    schema



    How can i forbid unsafe containers to send data to Redis?



    my docker-compose.yml



    version: "3"

    services:
    redis:
    image: redis:latest
    command: >
    sh -c "chown redis /tmp/redis/
    redis-server /usr/local/etc/redis/redis.conf"
    volumes:
    - redis_socket:/tmp/redis
    unsafe_container:
    build:
    context: ./docker
    dockerfile: Dockerfile
    command: python unsafe.py
    volumes:
    - redis_socket:/tmp/redis:ro
    links:
    - redis
    depends_on:
    - redis
    data_in:
    build:
    context: ./docker
    dockerfile: Dockerfile-data
    command: >
    sh -c "python3 /code/manage.py wait_db
    python3 /code/manage.py start_dc"
    volumes:
    - redis_socket:/tmp/redis
    links:
    - redis
    depends_on:
    - redis
    volumes:
    redis_socket:


    If i make a redis slave, can i set this one to only accept read from every connections except for the master redis?



    Thanks



    EDIT: After some tests, a slave is read only by default, but i can't connect the slave to the master using a socket, i dont find anything about this feature / issue on the docs










    share|improve this question



























      0












      0








      0







      I am making a webapp with docker, i need to run code made by public user (not safe at all), i use redis to push some data between my containers (using a socket shared in a named volume)



      schema



      How can i forbid unsafe containers to send data to Redis?



      my docker-compose.yml



      version: "3"

      services:
      redis:
      image: redis:latest
      command: >
      sh -c "chown redis /tmp/redis/
      redis-server /usr/local/etc/redis/redis.conf"
      volumes:
      - redis_socket:/tmp/redis
      unsafe_container:
      build:
      context: ./docker
      dockerfile: Dockerfile
      command: python unsafe.py
      volumes:
      - redis_socket:/tmp/redis:ro
      links:
      - redis
      depends_on:
      - redis
      data_in:
      build:
      context: ./docker
      dockerfile: Dockerfile-data
      command: >
      sh -c "python3 /code/manage.py wait_db
      python3 /code/manage.py start_dc"
      volumes:
      - redis_socket:/tmp/redis
      links:
      - redis
      depends_on:
      - redis
      volumes:
      redis_socket:


      If i make a redis slave, can i set this one to only accept read from every connections except for the master redis?



      Thanks



      EDIT: After some tests, a slave is read only by default, but i can't connect the slave to the master using a socket, i dont find anything about this feature / issue on the docs










      share|improve this question















      I am making a webapp with docker, i need to run code made by public user (not safe at all), i use redis to push some data between my containers (using a socket shared in a named volume)



      schema



      How can i forbid unsafe containers to send data to Redis?



      my docker-compose.yml



      version: "3"

      services:
      redis:
      image: redis:latest
      command: >
      sh -c "chown redis /tmp/redis/
      redis-server /usr/local/etc/redis/redis.conf"
      volumes:
      - redis_socket:/tmp/redis
      unsafe_container:
      build:
      context: ./docker
      dockerfile: Dockerfile
      command: python unsafe.py
      volumes:
      - redis_socket:/tmp/redis:ro
      links:
      - redis
      depends_on:
      - redis
      data_in:
      build:
      context: ./docker
      dockerfile: Dockerfile-data
      command: >
      sh -c "python3 /code/manage.py wait_db
      python3 /code/manage.py start_dc"
      volumes:
      - redis_socket:/tmp/redis
      links:
      - redis
      depends_on:
      - redis
      volumes:
      redis_socket:


      If i make a redis slave, can i set this one to only accept read from every connections except for the master redis?



      Thanks



      EDIT: After some tests, a slave is read only by default, but i can't connect the slave to the master using a socket, i dont find anything about this feature / issue on the docs







      docker redis






      share|improve this question















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      edited Nov 18 '18 at 1:27

























      asked Nov 18 '18 at 0:26









      Bast

      374111




      374111
























          1 Answer
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          Redis replicas are primarily designed to allow high availability, and as such, connect over the network. They do not support UDS connections to the master.



          You can, however, use socat to expose a Unix socket as TCP (for example https://serverfault.com/questions/517906/how-to-expose-a-unix-domain-socket-directly-over-tcp).






          share|improve this answer





















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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            1














            Redis replicas are primarily designed to allow high availability, and as such, connect over the network. They do not support UDS connections to the master.



            You can, however, use socat to expose a Unix socket as TCP (for example https://serverfault.com/questions/517906/how-to-expose-a-unix-domain-socket-directly-over-tcp).






            share|improve this answer


























              1














              Redis replicas are primarily designed to allow high availability, and as such, connect over the network. They do not support UDS connections to the master.



              You can, however, use socat to expose a Unix socket as TCP (for example https://serverfault.com/questions/517906/how-to-expose-a-unix-domain-socket-directly-over-tcp).






              share|improve this answer
























                1












                1








                1






                Redis replicas are primarily designed to allow high availability, and as such, connect over the network. They do not support UDS connections to the master.



                You can, however, use socat to expose a Unix socket as TCP (for example https://serverfault.com/questions/517906/how-to-expose-a-unix-domain-socket-directly-over-tcp).






                share|improve this answer












                Redis replicas are primarily designed to allow high availability, and as such, connect over the network. They do not support UDS connections to the master.



                You can, however, use socat to expose a Unix socket as TCP (for example https://serverfault.com/questions/517906/how-to-expose-a-unix-domain-socket-directly-over-tcp).







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 18 '18 at 18:32









                Itamar Haber

                28.1k43760




                28.1k43760






























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