Docker-compose mount postgress database for tests











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I'm trying to put together a compose file for my development environment, but I'm having problems finding some convinient way to setup a database filled with test data. I tried mounting directory from my project as a data folder for postgres container, but it mounts as root and postgres throws: 



data directory “/var/lib/postgresql/data/pgdata” has wrong ownership


Named volume works, but it would be problematic to use it with a git repo.



I could also just copy data directly into a docker image, but then I'd have to rebuild it whenever data changes.



Is there any other way around this?






docker docker-compose







share|improve this question






















  • Change the owner/group of the file (chown)?
    – Chris Stryczynski
    2 hours ago












  • why is named volume problematic to be used with a git repo?
    – Siyu
    2 hours ago










  • @ChrisStryczynski I created Dockerfile for postgres and added RUN mkdir -p "$PGDATA" && chown postgres "$PGDATA" (PGDATA set to /var/lib/postgresql/data) I still get FATAL: data directory "/var/lib/postgresql/data" has wrong ownership I guess ownership changes when compose mounts volume.
    – K. Kowalczyk
    1 hour ago












  • You need to do the chown on the directory you mount - not the directory within the container (dockerfile). The mounted directory overrides whatever is in the container.
    – Chris Stryczynski
    1 hour ago










  • @ChrisStryczynski you mean changing owner of directory on host?
    – K. Kowalczyk
    1 hour ago















up vote
0
down vote

favorite












I'm trying to put together a compose file for my development environment, but I'm having problems finding some convinient way to setup a database filled with test data. I tried mounting directory from my project as a data folder for postgres container, but it mounts as root and postgres throws: 



data directory “/var/lib/postgresql/data/pgdata” has wrong ownership


Named volume works, but it would be problematic to use it with a git repo.



I could also just copy data directly into a docker image, but then I'd have to rebuild it whenever data changes.



Is there any other way around this?






docker docker-compose







share|improve this question






















  • Change the owner/group of the file (chown)?
    – Chris Stryczynski
    2 hours ago












  • why is named volume problematic to be used with a git repo?
    – Siyu
    2 hours ago










  • @ChrisStryczynski I created Dockerfile for postgres and added RUN mkdir -p "$PGDATA" && chown postgres "$PGDATA" (PGDATA set to /var/lib/postgresql/data) I still get FATAL: data directory "/var/lib/postgresql/data" has wrong ownership I guess ownership changes when compose mounts volume.
    – K. Kowalczyk
    1 hour ago












  • You need to do the chown on the directory you mount - not the directory within the container (dockerfile). The mounted directory overrides whatever is in the container.
    – Chris Stryczynski
    1 hour ago










  • @ChrisStryczynski you mean changing owner of directory on host?
    – K. Kowalczyk
    1 hour ago













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I'm trying to put together a compose file for my development environment, but I'm having problems finding some convinient way to setup a database filled with test data. I tried mounting directory from my project as a data folder for postgres container, but it mounts as root and postgres throws: 



data directory “/var/lib/postgresql/data/pgdata” has wrong ownership


Named volume works, but it would be problematic to use it with a git repo.



I could also just copy data directly into a docker image, but then I'd have to rebuild it whenever data changes.



Is there any other way around this?






docker docker-compose







share|improve this question













I'm trying to put together a compose file for my development environment, but I'm having problems finding some convinient way to setup a database filled with test data. I tried mounting directory from my project as a data folder for postgres container, but it mounts as root and postgres throws: 



data directory “/var/lib/postgresql/data/pgdata” has wrong ownership


Named volume works, but it would be problematic to use it with a git repo.



I could also just copy data directly into a docker image, but then I'd have to rebuild it whenever data changes.



Is there any other way around this?






docker docker-compose




docker docker-compose






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 4 hours ago









K. Kowalczyk

428316




428316












  • Change the owner/group of the file (chown)?
    – Chris Stryczynski
    2 hours ago












  • why is named volume problematic to be used with a git repo?
    – Siyu
    2 hours ago










  • @ChrisStryczynski I created Dockerfile for postgres and added RUN mkdir -p "$PGDATA" && chown postgres "$PGDATA" (PGDATA set to /var/lib/postgresql/data) I still get FATAL: data directory "/var/lib/postgresql/data" has wrong ownership I guess ownership changes when compose mounts volume.
    – K. Kowalczyk
    1 hour ago












  • You need to do the chown on the directory you mount - not the directory within the container (dockerfile). The mounted directory overrides whatever is in the container.
    – Chris Stryczynski
    1 hour ago










  • @ChrisStryczynski you mean changing owner of directory on host?
    – K. Kowalczyk
    1 hour ago


















  • Change the owner/group of the file (chown)?
    – Chris Stryczynski
    2 hours ago












  • why is named volume problematic to be used with a git repo?
    – Siyu
    2 hours ago










  • @ChrisStryczynski I created Dockerfile for postgres and added RUN mkdir -p "$PGDATA" && chown postgres "$PGDATA" (PGDATA set to /var/lib/postgresql/data) I still get FATAL: data directory "/var/lib/postgresql/data" has wrong ownership I guess ownership changes when compose mounts volume.
    – K. Kowalczyk
    1 hour ago












  • You need to do the chown on the directory you mount - not the directory within the container (dockerfile). The mounted directory overrides whatever is in the container.
    – Chris Stryczynski
    1 hour ago










  • @ChrisStryczynski you mean changing owner of directory on host?
    – K. Kowalczyk
    1 hour ago
















Change the owner/group of the file (chown)?
– Chris Stryczynski
2 hours ago






Change the owner/group of the file (chown)?
– Chris Stryczynski
2 hours ago














why is named volume problematic to be used with a git repo?
– Siyu
2 hours ago




why is named volume problematic to be used with a git repo?
– Siyu
2 hours ago












@ChrisStryczynski I created Dockerfile for postgres and added RUN mkdir -p "$PGDATA" && chown postgres "$PGDATA" (PGDATA set to /var/lib/postgresql/data) I still get FATAL: data directory "/var/lib/postgresql/data" has wrong ownership I guess ownership changes when compose mounts volume.
– K. Kowalczyk
1 hour ago






@ChrisStryczynski I created Dockerfile for postgres and added RUN mkdir -p "$PGDATA" && chown postgres "$PGDATA" (PGDATA set to /var/lib/postgresql/data) I still get FATAL: data directory "/var/lib/postgresql/data" has wrong ownership I guess ownership changes when compose mounts volume.
– K. Kowalczyk
1 hour ago














You need to do the chown on the directory you mount - not the directory within the container (dockerfile). The mounted directory overrides whatever is in the container.
– Chris Stryczynski
1 hour ago




You need to do the chown on the directory you mount - not the directory within the container (dockerfile). The mounted directory overrides whatever is in the container.
– Chris Stryczynski
1 hour ago












@ChrisStryczynski you mean changing owner of directory on host?
– K. Kowalczyk
1 hour ago




@ChrisStryczynski you mean changing owner of directory on host?
– K. Kowalczyk
1 hour ago












1 Answer
1






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0
down vote













You'll need to determine the userid of the postgresql user, this can be done with id -u postgres (within the container).



Replace 1234 with the id you get from the above.



Then on the volume that you mount, from the host you need to do chown -R 1234:1234 path/to/volume/that/you/are/mounting.






share|improve this answer





















  • That won't work on Windows host tho.
    – K. Kowalczyk
    1 hour ago










  • Possibly as a work around you could docker exec into the container and run the chown from within the container.
    – Chris Stryczynski
    1 hour ago










  • Not possible since container is stopped after fatal is rised. I could theorethically write bash script to switch ownership and use it as entrypoint, but thats starting to get messy.
    – K. Kowalczyk
    38 mins ago













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You'll need to determine the userid of the postgresql user, this can be done with id -u postgres (within the container).



Replace 1234 with the id you get from the above.



Then on the volume that you mount, from the host you need to do chown -R 1234:1234 path/to/volume/that/you/are/mounting.






share|improve this answer





















  • That won't work on Windows host tho.
    – K. Kowalczyk
    1 hour ago










  • Possibly as a work around you could docker exec into the container and run the chown from within the container.
    – Chris Stryczynski
    1 hour ago










  • Not possible since container is stopped after fatal is rised. I could theorethically write bash script to switch ownership and use it as entrypoint, but thats starting to get messy.
    – K. Kowalczyk
    38 mins ago

















up vote
0
down vote













You'll need to determine the userid of the postgresql user, this can be done with id -u postgres (within the container).



Replace 1234 with the id you get from the above.



Then on the volume that you mount, from the host you need to do chown -R 1234:1234 path/to/volume/that/you/are/mounting.






share|improve this answer





















  • That won't work on Windows host tho.
    – K. Kowalczyk
    1 hour ago










  • Possibly as a work around you could docker exec into the container and run the chown from within the container.
    – Chris Stryczynski
    1 hour ago










  • Not possible since container is stopped after fatal is rised. I could theorethically write bash script to switch ownership and use it as entrypoint, but thats starting to get messy.
    – K. Kowalczyk
    38 mins ago















up vote
0
down vote










up vote
0
down vote









You'll need to determine the userid of the postgresql user, this can be done with id -u postgres (within the container).



Replace 1234 with the id you get from the above.



Then on the volume that you mount, from the host you need to do chown -R 1234:1234 path/to/volume/that/you/are/mounting.






share|improve this answer












You'll need to determine the userid of the postgresql user, this can be done with id -u postgres (within the container).



Replace 1234 with the id you get from the above.



Then on the volume that you mount, from the host you need to do chown -R 1234:1234 path/to/volume/that/you/are/mounting.







share|improve this answer












share|improve this answer



share|improve this answer










answered 1 hour ago









Chris Stryczynski

3,23612552




3,23612552












  • That won't work on Windows host tho.
    – K. Kowalczyk
    1 hour ago










  • Possibly as a work around you could docker exec into the container and run the chown from within the container.
    – Chris Stryczynski
    1 hour ago










  • Not possible since container is stopped after fatal is rised. I could theorethically write bash script to switch ownership and use it as entrypoint, but thats starting to get messy.
    – K. Kowalczyk
    38 mins ago




















  • That won't work on Windows host tho.
    – K. Kowalczyk
    1 hour ago










  • Possibly as a work around you could docker exec into the container and run the chown from within the container.
    – Chris Stryczynski
    1 hour ago










  • Not possible since container is stopped after fatal is rised. I could theorethically write bash script to switch ownership and use it as entrypoint, but thats starting to get messy.
    – K. Kowalczyk
    38 mins ago


















That won't work on Windows host tho.
– K. Kowalczyk
1 hour ago




That won't work on Windows host tho.
– K. Kowalczyk
1 hour ago












Possibly as a work around you could docker exec into the container and run the chown from within the container.
– Chris Stryczynski
1 hour ago




Possibly as a work around you could docker exec into the container and run the chown from within the container.
– Chris Stryczynski
1 hour ago












Not possible since container is stopped after fatal is rised. I could theorethically write bash script to switch ownership and use it as entrypoint, but thats starting to get messy.
– K. Kowalczyk
38 mins ago






Not possible since container is stopped after fatal is rised. I could theorethically write bash script to switch ownership and use it as entrypoint, but thats starting to get messy.
– K. Kowalczyk
38 mins ago




















 

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