Install PostGIS for AlloyDB Omni

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This page describes how to manually add the PostGIS extension to an existing AlloyDB Omni installation. The PostGIS extension enables storing, indexing, and querying geospatial data.

You can install PostGIS using either of the following methods:

  • Use Debian options in the Docker or Podman CLI. Docker relies on a daemon and requires root privileges for most operations, while Podman is daemonless and rootless.
  • Use Red Hat Universal Base Images (UBI). UBI container base operating system images are built from parts of Red Hat Enterprise Linux (RHEL).

Before you begin

Install AlloyDB Omni on your system.

Add PostGIS to your AlloyDB Omni installation

To add the PostGIS extension to your AlloyDB Omni installation, follow these steps:

  1. Find your installed AlloyDB Omni version labels:

    Docker

    docker run --rm -it  google/alloydbomni cat VERSION.txt

    Podman

    podman run --rm -it  google/alloydbomni cat VERSION.txt

    The output is similar to the following:

    AlloyDB Omni version: 16.3.0

    Take note of the AlloyDB Omni version number because you need it in the next step.

  2. Set the OMNI_VERSION environment variable:

    OMNI_VERSION=VERSION

    Replace VERSION with the complete database server version from the previous step, for example, 16.3.0.

  3. Create a new AlloyDB Omni container that includes PostGIS:

    Linux 

    mkdir ~/alloydb-omni-postgis

tee -a ~/alloydb-omni-postgis/Dockerfile << EOF
ARG OMNI_VERSION
  FROM google/alloydbomni:OMNI_VERSION
  RUN apt-get update && \
        apt-get install -y --no-install-recommends \
        postgresql-16-postgis-3 && \
        apt-get purge -y --auto-remove && \
        rm -rf /var/lib/apt/lists/*
 EOF

 cd ~/alloydb-omni-postgis

 sudo docker build --build-arg OMNI_VERSION=$OMNI_VERSION --tag google/alloydbomni-with-postgis:OMNI_VERSION .

    MacOS 

    mkdir ~/alloydb-omni-postgis

tee -a ~/alloydb-omni-postgis/Dockerfile << EOF
ARG OMNI_VERSION
FROM google/alloydbomni:OMNI_VERSION
RUN apt-get update && \
      apt-get install -y --no-install-recommends \
      postgresql-16-postgis-3 && \
      apt-get purge -y --auto-remove && \
      rm -rf /var/lib/apt/lists/*
 EOF

 cd ~/alloydb-omni-postgis

 sudo docker build --build-arg OMNI_VERSION=$OMNI_VERSION --tag google/alloydbomni-with-postgis:$OMNI_VERSION .
 ```

  4. Create a new container with AlloyDB Omni named my-omni-postgis:

    Docker 

    docker build -t google/alloydbomni-with-postgis:latest
docker run --name my-omni-postgis  -e POSTGRES_PASSWORD=NEW_PASSWORD  -d google/alloydbomni-with-postgis:OMNI_VERSION

    Podman 

    podman run --name my-omni-postgis  -e POSTGRES_PASSWORD=NEW_PASSWORD  -d google/alloydbomni-with-postgis:OMNI_VERSION

  5. Connect to your database with the PostGIS extension:

    docker exec -it my-omni-postgis psql -h localhost -U postgres

  6. Enable PostGIS:

    CREATE EXTENSION IF NOT EXISTS POSTGIS;
SELECT postgis_full_version();

    The output looks similar to the following:

    postgres=# SELECT postgis_full_version();
postgis_full_version
--------------------------------------------------------------------------------------------------------------------------------
POSTGIS="3.3.2 4975da8" [EXTENSION] PGSQL="150" GEOS="3.11.1-CAPI-1.17.1" PROJ="9.1.1" LIBXML="2.9.14" LIBJSON="0.16" LIBPROTOBUF="1.4.1" WAGYU="0.5.0 (Internal)"
(1 row)