diff --git a/.gitignore b/.gitignore
index 8f5eee06db0b8248a170bacbdc780c262734dc64..15d27fa1a6ce6befbf0938ddc7bf07bc827a4ce5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,6 @@
 /.gradle
 /.project
 /.settings
-/.vagrant
\ No newline at end of file
+/.vagrant
+/home
+/log
\ No newline at end of file
diff --git a/README.md b/README.md
index 00005c515388f53dc70bcbe9327be297560c00b5..1eada91522d6eae47af4db6545fbd99ae1da645e 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ dependencies:
 Vagrant can be installed by downloading the installation package (for your
 operating system) from http://vagrantup.com.
 
-In addition to the vagrant's core system, two additional vagrant plugins have
+In addition to the vagrant's core system, three additional vagrant plugins have
 to be installed on the system. Although this is not a dependency of the
 isochrone-vm system itself, it is a mandatory step. This has been implemented
 since it solves some of the most common problems that occurred with the vagrant
@@ -38,6 +38,13 @@ use the user which will start the isochrone-vm afterwards).
 vagrant plugin install vagrant-vbguest
 ```
 
+The third (and last) vagrant plugin needed by isochrone-vm is **vagrant-triggers**.
+This plugin will delete temporary folder when destroying the virtual machine, so
+that no temporary files remain on the host system:
+```shell
+vagrant plugin install vagrant-triggers
+```
+
 ### Installing virtualbox
 Virtualbox can be downloaded from the oracle homepage using the URL
 http://www.oracle.com/technetwork/server-storage/virtualbox/downloads/index.html
diff --git a/Vagrantfile b/Vagrantfile
index dd67763805dece12b65500e889ef604c1b67fc42..14e93f2149fb818c75ae573316959e27f356d938 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -1,7 +1,7 @@
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 
-REQUIRED_PLUGINS = %w(vagrant-cachier vagrant-vbguest)
+REQUIRED_PLUGINS = %w(vagrant-cachier vagrant-vbguest vagrant-triggers)
 exit unless REQUIRED_PLUGINS.all? do |plugin|
   Vagrant.has_plugin?(plugin) || (
     puts "The #{plugin} plugin is required. Please install it with:"
@@ -42,6 +42,12 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
     v.customize ["modifyvm", :id, "--ostype", "RedHat_64"]
   end
 
+  config.trigger.after :destroy do
+    info "Deleting temporary synced folders"
+    run "rm -Rf home"
+    run "rm -Rf log"
+  end
+
   # Enable vagrant-cachier plugin
   config.cache.enable :yum
 
@@ -50,7 +56,9 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
 
   # Setup of shared folders
   config.vm.synced_folder "conf", "/setup/conf"
+  config.vm.synced_folder "home", "/home/vagrant", create: true
   config.vm.synced_folder "img", "/setup/img"
+  config.vm.synced_folder "log", "/var/log/postgresql", create: true, owner: 26, group: 26
 
   # Setup environment on startup (done using a shell script)
   config.vm.provision "shell", path: "bootstrap.sh", args: ["niko", "secretPhdPassword#2014!", (isLocalMode ? "true" : "false")]
diff --git a/bootstrap.sh b/bootstrap.sh
index dea234b8470c9b81a73674ddbfaffe9ba70a6d80..3aad5163b0fd6f807bf1da89f2985ad330b026d6 100644
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -574,6 +574,8 @@ fi
 
 if $INSTALL_POSTGRES; then
 	echo "Installing $POSTGRESQL_SERVICE_NAME"
+	groupadd -g 26 postgres
+	useradd -u 26 -g 26 -c "PostgreSQL Server" postgres
 	yum -y install $POSTGRESQL_PKG_NAME $POSTGRESQL_PKG_NAME-contrib $POSTGRESQL_PKG_NAME-server >> install_postgresql.log 2>&1
 
 	echo "  - exporting postgresql options"