Adding Backup

README.md

@@ -6,4 +6,16 @@ The goal of this project is to create a containerized minecraft app that does th
 2. Runs the [equivalent exchange mod](https://github.com/sinkillerj/ProjectE)
 3. Compile forge in base image
 4. ~~Runs the [minecraft overviewer](https://github.com/overviewer/Minecraft-Overviewer) mapper~~
-5. Automagic backup the backup
+5. ~~Automagic backup the backup~~
+
+## Map/Web
+The mapper service runs a cron that runs [minecraft overviewer](https://github.com/overviewer/Minecraft-Overviewer) every 10 minutes.  The files from that process are saved to a voume that is shared to the web service.  That service runs nginx and makes the map available on port 80
+
+## Backup
+Backups are handled by a cron in the backups service.  Backups follow the following schedule.
+#### Hourly
+Hourly backups run at the top of each hour.  24 hourly backups are retained.  
+#### Daily
+Daily backups are ran at 00:05:00 each day.  7 daily backups are retained.  
+#### Weekly
+Weekly backups are ran sundays at 00:10:00.  8 weekly backups are retained.  

backup.Dockerfile

@@ -0,0 +1,12 @@
+FROM ubuntu:18.04
+
+RUN apt-get update -y
+
+ARG MINECRAFT_VERSION
+
+RUN apt-get update -y && \
+    apt-get install \
+    cron -y
+
+COPY backup.sh /entrypoint.sh
+ENTRYPOINT /entrypoint.sh

backup.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Start the run once job.
+echo "backup container has been started"
+
+mkdir /backup/hourly
+mkdir /backup/daily
+mkdir /backup/weekly
+
+# Setup a cron schedule
+echo '0 * * * * datetime=$(date +"%Y%m%d%H%M%S") && echo "created /backup/hourly/$datetime.tar.gz" >> /var/log/cron.log 2>&1 && tar -czvf "/backup/hourly/$datetime.tar.gz" /world >> /var/log/cron.log 2>&1
+5 * * * * find /backup/hourly | grep -v "/$" | tail -n +26 | xargs -I {} rm -- {}
+5 0 * * * datetime=$(date +"%Y%m%d%H%M%S") && echo "created /backup/daily/$datetime.tar.gz" >> /var/log/cron.log 2>&1 && tar -czvf "/backup/daily/$datetime.tar.gz" /world >> /var/log/cron.log 2>&1
+10 0 * * * find /backup/daily | grep -v "/$" | tail -n +9 | xargs -I {} rm -- {}
+10 0 * * 0 datetime=$(date +"%Y%m%d%H%M%S") && echo "created /backup/weekly/$datetime.tar.gz" >> /var/log/cron.log 2>&1 && tar -czvf "/backup/weekly/$datetime.tar.gz" /world >> /var/log/cron.log 2>&1
+15 0 * * 0 find /backup/weekly | grep -v "/$" | tail -n +10 | xargs -I {} rm -- {}
+# This extra line makes it a valid cron' > scheduler.txt
+
+crontab scheduler.txt
+cron
+touch /var/log/cron.log
+tail -f /var/log/cron.log

docker-compose.yml

@@ -47,5 +47,18 @@ services:
               target: /usr/share/nginx/html
               read_only: true
 
+    backup:
+        build: 
+            dockerfile: backup.Dockerfile
+            context: .
+        volumes:
+            - type: bind
+              source: C:\temp\world
+              target: /world
+              read_only: true
+            - type: bind
+              source: c:\temp\backup
+              target: /backup
+
 volumes:
     mapper_output: {}

mapper.Dockerfile

@@ -1,11 +1,11 @@
 # Base Image
 FROM ubuntu:18.04
 
+RUN apt-get update -y
+
 ARG MINECRAFT_VERSION
 ARG OVERVIEWER_VERSION
 
-RUN apt-get update -y
-
 # Add build dependency
 RUN apt-get update -y && \
     apt-get install \

mapper.sh

@@ -1,10 +1,10 @@
 #!/bin/bash
 
 # Start the run once job.
-echo "Docker container has been started"
+echo "mapper container has been started"
 
 # Setup a cron schedule
-echo "*/5 * * * * /usr/local/src/Minecraft-Overviewer/overviewer.py /world /output >> /var/log/cron.log 2>&1
+echo "*/10 * * * * /usr/local/src/Minecraft-Overviewer/overviewer.py /world /output >> /var/log/cron.log 2>&1
 # This extra line makes it a valid cron" > scheduler.txt
 
 crontab scheduler.txt