Increase kernel.pid_max value for ceph-osd nodes

To meet Ceph requirements and eliminate accidental cascade
OSD node failures this commit increases kernel.pid_max
parameter during deploy ceph-osd nodes. Also this commit
contain some puppet-lint cleanups and validations for this
module.

Change-Id: I70a64ff7b85229bf0760be266302d9b32039989a
(cherry-picked from commit 2cec77da86)
Closes-Bug: #1536271
Closes-Bug: #1537084

deployment/puppet/ceph/manifests/init.pp

@@ -3,8 +3,8 @@
 
 class ceph (
       # General settings
-      $mon_hosts,
-      $mon_ip_addresses,
+      $mon_hosts                          = undef,
+      $mon_ip_addresses                   = undef,
       $cluster_node_address               = $::ipaddress, # This should be the cluster service address
       $primary_mon                        = $::hostname,  # This should be the first controller
       $mon_addr                           = $::ipaddress, # This needs to be replaced with the address we want to bind the mon to (if this is a mon)
@@ -91,8 +91,12 @@ class ceph (
          cwd  => '/root',
   }
 
+  # the regex includes all roles that require ceph.conf
   if hiera('role') =~ /controller|ceph|compute|cinder/ {
-    # the regex above includes all roles that require ceph.conf
+
+    validate_array($mon_hosts)
+    validate_array($mon_ip_addresses)
+
     include ceph::ssh
     include ceph::params
     include ceph::conf
@@ -101,8 +105,8 @@ class ceph (
 
   if hiera('role') =~ /controller|ceph/ {
     service {'ceph':
-      name    => $ceph::params::service_name,
       ensure  => 'running',
+      name    => $ceph::params::service_name,
       enable  => true,
       require => Class['ceph::conf']
     }
@@ -135,6 +139,13 @@ class ceph (
         include ceph::osds
         Class['ceph::conf'] -> Class['ceph::osds']
         Ceph_conf <||> ~> Service['ceph']
+
+        # set the recommended value according: http://tracker.ceph.com/issues/10988
+        sysctl::value { 'kernel.pid_max':
+          value  => '4194303',
+        }
+
+        Sysctl::Value <| |> -> Service['ceph']
       }
     }
 

deployment/puppet/ceph/manifests/keystone.pp

@@ -13,7 +13,7 @@ class ceph::keystone (
     description => 'Openstack Object-Store Service',
   }
 
-  keystone_endpoint {"$region/swift":
+  keystone_endpoint {"${region}/swift":
     ensure       => present,
     public_url   => "${pub_protocol}://${pub_ip}:${swift_endpoint_port}/swift/v1",
     admin_url    => "http://${adm_ip}:${swift_endpoint_port}/swift/v1",

deployment/puppet/ceph/manifests/nova_compute.pp

@@ -11,8 +11,8 @@ class ceph::nova_compute (
 
   if !defined(Service['libvirt'] ) {
     service { 'libvirt':
-      name   => $::ceph::params::libvirt_service_name,
       ensure => 'running',
+      name   => $::ceph::params::libvirt_service_name,
     }
   }
 

deployment/puppet/ceph/manifests/radosgw.pp

@@ -56,11 +56,11 @@ class ceph::radosgw (
     ensure  => 'installed',
   }
 
-  if !(defined('horizon') or
-       defined($::ceph::params::package_httpd) or
-       defined($::ceph::params::service_httpd) ) {
-    package {$::ceph::params::package_httpd:
+  # check out httpd package/service is defined
+  if !defined(Package['httpd']) {
+    package { 'httpd':
       ensure => 'installed',
+      name   => $::ceph::params::package_httpd,
     }
     service { 'httpd':
       ensure => 'running',