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https://github.com/zulip/docker-zulip.git
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8823d783a4
We need to remove the container before removing the volume, otherwise the cleanup will fail because the volume is in use.
111 lines
3.7 KiB
Bash
Executable File
111 lines
3.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -eux
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new_version=14
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# Require the `yq` tool
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if ! command -v yq >/dev/null; then
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echo "You must install the 'yq' tool to use this script."
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exit 1
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fi
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# Require docker-compose 2.1.1 or higher, for `docker-compose up --wait`
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docker_compose_version=$(docker-compose --version --short)
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if [ "$(docker_compose_version)" = "$(echo -e "2.1.0\n${docker_compose_version}" | sort -V | head -n1)" ]; then
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echo "Your docker-compose is too old (${docker_compose_version}); upgrade to at least 2.1.1."
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exit 1
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fi
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image=$(yq ".services.database.image" docker-compose.yml)
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if [[ $image =~ ^zulip/zulip-postgresql:([0-9]+)$ ]]; then
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old_version="${BASH_REMATCH[1]}"
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else
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echo "Unexpected PostgreSQL image: $image"
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exit 1
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fi
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volume_mount=$(yq ".services.database.volumes.0" docker-compose.yml)
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if [[ "$volume_mount" =~ ^([^:]+):/var/lib/postgresql/data:rw$ ]]; then
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old_mountpoint="${BASH_REMATCH[1]}"
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else
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echo "Unexpected volume mount: $volume_mount"
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exit 1
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fi
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if [ "$new_version" -eq "$old_version" ]; then
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echo "PostgreSQL image is already version $new_version!"
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exit 1
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fi
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# Create a new volume for the data; scope it with the current
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# directory, like docker-compose
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docker_compose_project="$(basename "$(pwd)")"
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new_volume="postgresql-$new_version"
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full_new_volume="${docker_compose_project}_${new_volume}"
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docker volume create "$full_new_volume"
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trap 'docker volume --force "$full_new_volume"' EXIT
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# Start a new PostgreSQL container of the right version to read in the
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# dumped database and write a new data dir on the new volume
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temp_container=$(
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docker run -d \
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-e POSTGRES_DB=zulip \
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-e POSTGRES_USER=zulip \
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-e POSTGRES_PASSWORD=zulip \
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-v "$full_new_volume:/var/lib/postgresql/data:rw" \
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--health-cmd 'psql -U zulip -c "select 1"' \
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--health-interval 10s \
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"zulip/zulip-postgresql:$new_version"
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)
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trap 'docker rm --force "$temp_container"; docker volume rm --force "$full_new_volume"' EXIT
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# Wait for the new PostgreSQL container to become available
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tries=0
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while [ "$(docker inspect --format='{{json .State.Health.Status}}' "$temp_container")" != '"healthy"' ]; do
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tries=$((tries + 1))
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if [ "$tries" -gt 5 ]; then
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echo "PostgreSQL $new_version container failed to start!"
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exit 1
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fi
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sleep 10
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done
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# Ensure database is running
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docker-compose up --wait database
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# Stop the zulip processes which talk to the database
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zulip_is_running=$(docker-compose ps --filter status=running --services | grep zulip || true)
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if [ -n "$zulip_is_running" ]; then
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docker-compose stop zulip
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fi
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# Transfer the data to the new container
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docker-compose exec database pg_dumpall -U zulip |
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docker exec -i "$temp_container" psql -U zulip
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if [ "$old_version" -eq "10" ]; then
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# Upgrade MD5 password to SCRAM-SHA-256. We escape all 's by doubling them.
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database_password=$(yq .services.database.environment.POSTGRES_PASSWORD docker-compose.yml |
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perl -pe "s/'/''/g")
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echo "ALTER USER zulip WITH PASSWORD '$database_password';" |
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docker exec -i "$temp_container" psql -U zulip
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fi
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# Stop the running database
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docker-compose rm --force --stop database
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# Stop the temporary PostgreSQL container
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docker stop "$temp_container"
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docker rm "$temp_container"
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trap '' EXIT
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# Update the docker-compose.yml file for the new version and data path
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IMAGE="zulip/zulip-postgresql:$new_version" yq -i '.services.database.image = strenv(IMAGE)' docker-compose.yml
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VOLUME="$new_volume:/var/lib/postgresql/data:rw" yq -i '.services.database.volumes.0 = strenv(VOLUME)' docker-compose.yml
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VOLUME="$new_volume" yq -i 'with(.volumes.[strenv(VOLUME)]; . = "" | . tag="!!null")' docker-compose.yml
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# Restart zulip, and the new database container
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docker-compose up --wait
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echo "Old data from PostgreSQL $old_version is available in $old_mountpoint"
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