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Data source: rsync

info

As the first step, you need to set up a machine for Database Lab Engine instance. See the guide.

Configuration​

Jobs​

In order to set up Database Lab Engine to automatically get the data from database using rsync you need to use following jobs:

Options​

Copy the example configuration file config.example.physical_generic.yml from the Database Lab repository to ~/.dblab/engine/configs/server.yml and update the following options:

  • Set secure server:verificationToken, it will be used to authorize API requests to the Engine
  • Set connection options in physicalRestore:options:envs:
    • PGUSER: database user name
    • PGPASSWORD: database master password
    • PGHOST: database server host
  • Set PostgreSQL commands in physicalRestore:options:customTool:
    • command:
      rsync --archive \
        --password-file=${RSYNC_PWD_FILE} \
        rsync://${RSYNC_USER}@${WAL_SERVER}:/rsync/${CLUSTER}/${WALCH:0:8}/${WPNUM:4:2}/${WPNUM}/* \
        ${PGDATA}/temp_wal/ 2>/dev/null`
    • restore_command: TBD
  • Set proper version in Postgres Docker image tag (change the images itself only if you know what are you doing):
    • databaseContainer:dockerImage

pg_basebackup -D - -Ft -X​

Run Database Lab Engine​

sudo docker run \
  --name dblab_server \
  --label dblab_control \
  --privileged \
  --publish 127.0.0.1:2345:2345 \
  --volume /var/run/docker.sock:/var/run/docker.sock \
  --volume /var/lib/dblab:/var/lib/dblab/:rshared \
  --volume ~/.dblab/engine/configs:/home/dblab/configs \
  --volume ~/.dblab/engine/meta:/home/dblab/meta \
  --volume ~/.dblab/engine/logs:/home/dblab/logs \
  --volume /sys/kernel/debug:/sys/kernel/debug:rw \
  --volume /lib/modules:/lib/modules:ro \
  --volume /proc:/host_proc:ro \
  --env DOCKER_API_VERSION=1.39 \
  --detach \
  --restart on-failure \
  postgresai/dblab-server:3.5.0
info

Parameter --publish 127.0.0.1:2345:2345 means that only local connections will be allowed.

To allow external connections, consider either using additional software such as NGINX or Envoy or changing this parameter. Removing the host/IP part (--publish 2345:2345) allows listening to all available network interfaces. See more details in the official Docker command-line reference.

Restart in the case of failure​

TBD
note

This page is unfinished. Reach out to the Postgres.ai team to learn more.