Adding Docker build and K8s YAML file

Author: mgoddard

Dockerfile

@@ -0,0 +1,8 @@
+FROM python:3.8-slim-buster
+WORKDIR /app
+COPY . /app
+RUN apt-get update && apt-get --yes --no-install-recommends install python3-dev build-essential cmake && rm -rf /var/lib/apt/lists/*
+RUN pip3 install --no-cache-dir -r requirements.txt && rm -rf ~/.cache/pip
+EXPOSE 18080
+ENTRYPOINT [ "python", "./map_app.py" ]
+

README.md

@@ -53,3 +53,22 @@ time it takes to load the amenity icons in the browser.
 $ export USE_GEOHASH=true
 ```
 
+## Rebuild the Docker image (optional)
+
+Edit Dockerfile as necessary, and then change `./docker_include.sh` to set
+`docker_id` and anything else you'd like to change.
+
+```
+$ ./docker_build_image.sh
+$ ./docker_tag_publish.sh
+
+```
+
+## Run the app via its Docker image
+
+Edit `./docker_run_image.sh`, changing the environment variables to suit your deployment.
+
+```
+$ ./docker_run_image.sh
+```
+

crdb-geo-tourist.yaml

@@ -0,0 +1,26 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: crdb-geo-tourist
+spec:
+  containers:
+  - name: crdb-geo
+    image: mgoddard/crdb-geo-tourist:1.0
+    imagePullPolicy: Always
+    env:
+      - name: PGHOST
+        value: ""
+      - name: PGPORT
+        value: "26257"
+      - name: PGDATABASE
+        value: "defaultdb"
+      - name: PGUSER
+        value: "root"
+      - name: PGPASSWORD
+        value: ""
+      - name: MAPBOX_TOKEN
+        value: "INSERT YOUR MAPBOX TOKEN VALUE HERE"
+      - name: USE_GEOHASH
+        value: "False"
+  restartPolicy: Always
+

docker_build_image.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+. ./docker_include.sh
+
+docker build -t $docker_id/$img_name .
+

docker_include.sh

@@ -0,0 +1,3 @@
+tag=1.0
+docker_id="mgoddard"
+img_name="crdb-geo-tourist"

docker_run_image.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+. ./docker_include.sh
+
+img="$docker_id/$img_name"
+tag="1.0"
+
+export PGHOST="host.docker.internal"
+export PGPORT="26257"
+export PGDATABASE="defaultdb"
+export PGUSER="root"
+export PGPASSWORD=""
+export MAPBOX_TOKEN=$( cat ../MapBox_Token.txt )
+export USE_GEOHASH=False
+
+docker pull $img:$tag
+docker run -e PGHOST -e PGPORT -e PGDATABASE -e PGUSER -e PGPASSWORD -e MAPBOX_TOKEN --publish 18080:18080 $img
+

docker_tag_publish.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+. ./docker_include.sh
+
+docker tag $docker_id/$img_name $docker_id/$img_name:$tag
+docker image tag $docker_id/$img_name:$tag $docker_id/$img_name:latest
+docker push $docker_id/$img_name:$tag
+

map_app.py

@@ -13,8 +13,8 @@
 #
 # Prior to running, set the two required connection parameters as environment variables:
 #
-#   $ export PGHOST=192.168.1.4
-#   $ export PGPORT=5432
+#   $ export PGHOST=192.168.1.9
+#   $ export PGPORT=26257
 #
 
 useGeohash = False
@@ -23,7 +23,8 @@ def db_connect():
   return psycopg2.connect(
     database=os.getenv("PGDATABASE", "defaultdb"),
     user=os.getenv("PGUSER", "root"),
-    application_name="Map Client"
+    password=os.getenv("PGPASSWORD", ""),
+    application_name="CRDB Geo Tourist"
   )
 
 def get_db():

requirements.txt

@@ -1,5 +1,6 @@
 psycopg2-binary
 Flask
 gunicorn
+python-geohash
 Geohash
 flask-cors