Install PostGIS for AlloyDB Omni

AlloyDB Omni does not include the PostGIS extension, but you can manually add it to an existing AlloyDB Omni installation by following the instructions on this page to add support for storing, indexing, and querying geospatial data.

Before you begin

Ensure that you've installed 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: 15.12.0
   

   Take note of the AlloyDB Omni version number; 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, 15.12.0.

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-15-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-15-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 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)