smarthall/docker-wal-e-replica repository overview

⁠Postgres WAL-E Replica

This docker image combines WAL-E and Postgres 9.3 to create a Docker image capable of restoring from a WAL-E backup. Ths can be used for several things:

• Developers can use it to create local replicas from backups

• It can be used to test the integrity of your backups

• It can be used to create a temporary replica for large batch jobs

⁠Running the image

First create a file named env and put the following environment variables inside one per line as KEY=VALUE:

• AWS_ACCESS_KEY_ID

• AWS_SECRET_ACCESS_KEY

• WALE_S3_PREFIX

Then simply run the container with:

docker run -p 5432:5432 --env-file=env smarthall/docker-wal-e-replica

If you want to maintain the database over several containers you can mount the postgres data directory onto your local machine by adding the following argument to the docker run command.

-v /location/on/host:/var/lib/pgsql:rw

This way you can stop the container and mount it again later with the same database. Provided new WAL segments are available it will catch up to the latest again.

⁠Building the image

docker built -t docker-wal-e-replica .