diff --git a/manifests/params.pp b/manifests/params.pp
index 39cd005..b014822 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -1,51 +1,73 @@
 # This class is meant to be called from the locp-cassandra module.
 # It sets variables according to platform.
 class cassandra::params {
   case $::osfamily {
     'Debian': {
-      case $::operatingsystemmajrelease {
-        12.04: {
-          $net_ipv4_tcp_rmem = '4096 87380 16777216'
-          $net_ipv4_tcp_wmem = '4096 65536 16777216'
+      case $::operatingsystem {
+        'Ubuntu': {
+          case $::operatingsystemmajrelease {
+            '18.04': {
+              $net_ipv4_tcp_rmem = '4096 87380 16777216'
+              $net_ipv4_tcp_wmem = '4096 65536 16777216'
+              $java_package = 'openjdk-8-jre-headless'
+              warning("Experimental ${::osfamily} ${::operatingsystemmajrelease} support")
+            }
+            default: {
+              $net_ipv4_tcp_rmem = '4096, 87380, 16777216'
+              $net_ipv4_tcp_wmem = '4096, 65536, 16777216'
+              $java_package = 'openjdk-7-jre-headless'
+              warning("Defaults used for ${::osfamily} ${::operatingsystemmajrelease}")
+            }
+          }
         }
+        # non-Ubuntu Debian is just... Debian
         default: {
-          $net_ipv4_tcp_rmem = '4096, 87380, 16777216'
-          $net_ipv4_tcp_wmem = '4096, 65536, 16777216'
+          case $::operatingsystemmajrelease {
+            '12.04': {
+              $net_ipv4_tcp_rmem = '4096 87380 16777216'
+              $net_ipv4_tcp_wmem = '4096 65536 16777216'
+              $java_package = 'openjdk-7-jre-headless'
+            }
+            default: {
+              $net_ipv4_tcp_rmem = '4096, 87380, 16777216'
+              $net_ipv4_tcp_wmem = '4096, 65536, 16777216'
+              $java_package = 'openjdk-7-jre-headless'
+            }
+          }
         }
       }
 
       $cassandra_pkg = 'cassandra'
       $config_path = '/etc/cassandra'
-      $java_package = 'openjdk-7-jre-headless'
       $jna_package_name = 'libjna-java'
       $optutils_package_name = 'cassandra-tools'
       $sysctl_file = '/etc/sysctl.d/10-cassandra.conf'
       $systemctl = '/bin/systemctl'
     }
     'RedHat': {
       case $::operatingsystemmajrelease {
         6: {
           $net_ipv4_tcp_rmem = '4096 87380 16777216'
           $net_ipv4_tcp_wmem = '4096 65536 16777216'
           $sysctl_file = '/etc/sysctl.conf'
         }
         7: {
           $net_ipv4_tcp_rmem = '4096, 87380, 16777216'
           $net_ipv4_tcp_wmem = '4096, 65536, 16777216'
           $sysctl_file = '/etc/sysctl.d/10-cassandra.conf'
         }
         default: {}
       }
 
       $cassandra_pkg = 'cassandra22'
       $config_path = '/etc/cassandra/default.conf'
       $java_package = 'java-1.8.0-openjdk-headless'
       $jna_package_name = 'jna'
       $optutils_package_name = 'cassandra22-tools'
       $systemctl = '/usr/bin/systemctl'
     }
     default: {
       $config_path_parents = []
     }
   }
 }