Merge pull request #28 from cfortier2/fix/docker-cleanup

Convert docker-cleanup to a script for easier maintainability

v1/fleet_units/docker-cleanup.service

@@ -10,17 +10,7 @@ User=core
 Restart=on-failure
 RestartSec=20
 TimeoutStartSec=0
-ExecStart=/usr/bin/sh -c ' \
-  if [[ $(/usr/bin/docker ps -a | grep Exited | awk \'{print $1 "\\t" $7 "\\t" $10}\' | grep week | wc -l) -ne 0 ]]; \
-  then \
-    echo "Starting docker cleanup with a max of: $MAX_DOCKER"; \
-    /usr/bin/docker ps -a | grep Exited | awk \'{print $1 "\\t" $7 "\\t" $10}\' | grep week | awk \'{print $1}\' | head -n $MAX_DOCKER | xargs /usr/bin/docker rm -v ; \
-    /usr/bin/docker images -a | grep none | awk \'{print $3}\' | xargs /usr/bin/docker rmi ; \
-    echo "cleanup complete"; \
-  else \
-    echo "nothing to cleanup"; \
-  fi
-  sudo free -h'
+ExecStart=/usr/bin/bash -c '/usr/bin/wget -O /home/core/docker-cleanup.sh https://raw.githubusercontent.com/behance/mesos-systemd/fix/docker-cleanup/v1/fleet_units/docker-cleanup.sh && /usr/bin/bash /home/core/docker-cleanup.sh'
 
 [X-Fleet]
 Global=true

v1/fleet_units/docker-cleanup.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# this exists because trying to escape bash commands in a sytemd unit is super sadtimes
+
+if [[ $(/usr/bin/docker ps -a | grep Exited | awk '{print $1 "\\t" $7 "\\t" $10}' | grep week | wc -l) -ne 0 ]]
+then
+  echo "Starting docker cleanup with a max of: $MAX_DOCKER"
+  /usr/bin/docker ps -a | grep Exited | awk '{print $1 "\\t" $7 "\\t" $10}' | grep week | awk '{print $1}' | head -n $MAX_DOCKER | xargs /usr/bin/docker rm -v
+  /usr/bin/docker images -a | grep none | awk '{print $3}' | xargs /usr/bin/docker rmi
+  echo "cleanup complete"
+else
+  echo "nothing to cleanup"
+fi
+sudo free -h