diff --git a/.rubocop.yml b/.rubocop.yml
index 8ddc446..1ebbd9a 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,5 +1,16 @@
+AllCops:
+  Excludes:
+    - vendor/**
+
+AlignParameters:
+  Enabled: false
+Encoding:
+  Enabled: false
+HashSyntax:
+  Enabled: false
 StringLiterals:
   Enabled: false
-
 LineLength:
   Enabled: false
+MethodLength:
+  Max: 30
diff --git a/attributes/radosgw.rb b/attributes/radosgw.rb
index 6bc5278..5fb3171 100644
--- a/attributes/radosgw.rb
+++ b/attributes/radosgw.rb
@@ -16,11 +16,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+
 default["ceph"]["radosgw"]["api_fqdn"] = "localhost"
 default["ceph"]["radosgw"]["admin_email"] = "admin@example.com"
 default["ceph"]["radosgw"]["rgw_addr"] = "*:80"
 default["ceph"]["radosgw"]["rgw_port"] = false
-default["ceph"]["radosgw"]["webserver_companion"] = "apache2" #can be false
+default["ceph"]["radosgw"]["webserver_companion"] = "apache2" # can be false
 default['ceph']["radosgw"]['use_apache_fork'] = true
 case node['platform']
 when 'ubuntu'
diff --git a/attributes/repo.rb b/attributes/repo.rb
index 803a22a..b58fb12 100644
--- a/attributes/repo.rb
+++ b/attributes/repo.rb
@@ -7,7 +7,7 @@ default['ceph']['extras_repo_url'] = "http://ceph.com/packages/ceph-extras"
 
 case node['platform_family']
 when "debian"
-  #Debian/Ubuntu default repositories
+  # Debian/Ubuntu default repositories
   default['ceph']['debian']['stable']['repository'] = "#{node['ceph']['repo_url']}/debian-#{node['ceph']['version']}/"
   default['ceph']['debian']['stable']['repository_key'] = "https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc"
   default['ceph']['debian']['testing']['repository'] = "#{node['ceph']['repo_url']}/debian-testing/"
@@ -17,7 +17,7 @@ when "debian"
   default['ceph']['debian']['extras']['repository'] = "#{node['ceph']['extras_repo_url']}/debian/"
   default['ceph']['debian']['extras']['repository_key'] = "https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc"
 when "rhel"
-  #Redhat/CentOS default repositories
+  # Redhat/CentOS default repositories
   default['ceph']['rhel']['stable']['repository'] = "#{node['ceph']['repo_url']}/rpm-#{node['ceph']['version']}/el6/noarch/ceph-release-1-0.el6.noarch.rpm"
   default['ceph']['rhel']['testing']['repository'] = "#{node['ceph']['repo_url']}/rpm-testing/el6/x86_64/ceph-release-1-0.el6.noarch.rpm"
   default['ceph']['rhel']['dev']['repository'] = "http://gitbuilder.ceph.com/ceph-rpm-centos6-x86_64-basic/ref/#{node['ceph']['version']}/x86_64/"
@@ -25,7 +25,7 @@ when "rhel"
   default['ceph']['rhel']['extras']['repository'] = "#{node['ceph']['extras_repo_url']}/rpm/rhel6/x86_64/"
   default['ceph']['rhel']['extras']['repository_key'] = "https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/autobuild.asc"
 when "fedora"
-  #Fedora default repositories
+  # Fedora default repositories
   default['ceph']['fedora']['stable']['repository'] = "#{node['ceph']['repo_url']}/rpm-#{node['ceph']['version']}/fc#{node['platform_version']}/x86_64/ceph-release-1-0.fc#{node['platform_version']}.noarch.rpm"
   default['ceph']['fedora']['testing']['repository'] = "#{node['ceph']['repo_url']}/rpm-testing/fc#{node['platform_version']}/x86_64/ceph-release-1-0.fc#{node['platform_version']}.noarch.rpm"
   default['ceph']['fedora']['dev']['repository'] = "http://gitbuilder.ceph.com/ceph-rpm-fc#{node['platform_version']}-x86_64-basic/ref/#{node['ceph']['version']}/RPMS/x86_64/"
@@ -33,9 +33,9 @@ when "fedora"
   default['ceph']['fedora']['extras']['repository'] = "#{node['ceph']['extras_repo_url']}/rpm/fedora#{node['platform_version']}/x86_64/"
   default['ceph']['fedora']['extras']['repository_key'] = "https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/autobuild.asc"
 when "suse"
-  #(Open)SuSE default repositories
+  # (Open)SuSE default repositories
   # Chef doesn't make a difference between suse and opensuse
-  suse = %x[ head -n1 /etc/SuSE-release| awk '{print $1}' ].chomp.downcase #can be suse or opensuse
+  suse = %x[ head -n1 /etc/SuSE-release| awk '{print $1}' ].chomp.downcase # can be suse or opensuse
   suse = "sles" if suse == "suse"
   suse_version = suse << %x[ grep VERSION /etc/SuSE-release | awk -F'= ' '{print $2}' ].chomp
 
diff --git a/libraries/default.rb b/libraries/default.rb
index ec4e9bf..a9d98eb 100644
--- a/libraries/default.rb
+++ b/libraries/default.rb
@@ -1,26 +1,25 @@
 require 'ipaddr'
 require 'json'
 
-def is_crowbar?()
-  return defined?(Chef::Recipe::Barclamp) != nil
+def is_crowbar?
+  !defined?(Chef::Recipe::Barclamp).nil?
 end
 
 def get_mon_nodes(extra_search=nil)
   if is_crowbar?
     mon_roles = search(:role, 'name:crowbar-* AND run_list:role\[ceph-mon\]')
     if not mon_roles.empty?
-      search_string = mon_roles.map { |role_object| "roles:"+role_object.name }.join(' OR ')
+      search_string = mon_roles.map { |role_object| "roles:" + role_object.name }.join(' OR ')
       search_string = "(#{search_string}) AND ceph_config_environment:#{node['ceph']['config']['environment']}"
     end
   else
     search_string = "role:ceph-mon AND chef_environment:#{node.chef_environment}"
   end
 
-  if not extra_search.nil?
+  unless extra_search.nil?
     search_string = "(#{search_string}) AND (#{extra_search})"
   end
-  mons = search(:node, search_string)
-  return mons
+  search(:node, search_string)
 end
 
 # If public_network is specified
@@ -64,21 +63,19 @@ def find_node_ip_in_network(network, nodeish=nil)
   nil
 end
 
-def get_mon_addresses()
+def get_mon_addresses
   mon_ips = []
 
   if File.exists?("/var/run/ceph/ceph-mon.#{node['hostname']}.asok")
-    mon_ips = get_quorum_members_ips()
+    mon_ips = get_quorum_members_ips
   else
     mons = []
     # make sure if this node runs ceph-mon, it's always included even if
     # search is laggy; put it first in the hopes that clients will talk
     # primarily to local node
-    if node['roles'].include? 'ceph-mon'
-      mons << node
-    end
+    mons << node if node['roles'].include?('ceph-mon')
 
-    mons += get_mon_nodes()
+    mons += get_mon_nodes
     if is_crowbar?
       mon_ips = mons.map { |node| Chef::Recipe::Barclamp::Inventory.get_network_by_type(node, "admin").address }
     else
@@ -89,35 +86,38 @@ def get_mon_addresses()
       end
     end
   end
-  mon_ips = mon_ips.reject{|m|m.nil?}
-  return mon_ips.uniq
+  mon_ips.reject { |m| m.nil? }.uniq
 end
 
-def get_quorum_members_ips()
+def get_quorum_members_ips
   mon_ips = []
-  mon_status = %x[ceph --admin-daemon /var/run/ceph/ceph-mon.#{node['hostname']}.asok mon_status]
-  raise 'getting quorum members failed' unless $?.exitstatus == 0
+  cmd = Mixlib::ShellOut.new("ceph --admin-daemon /var/run/ceph/ceph-mon.#{node['hostname']}.asok mon_status")
+  cmd.run_command
+  cmd.error!
 
-  mons = JSON.parse(mon_status)['monmap']['mons']
+  mons = JSON.parse(cmd.stdout)['monmap']['mons']
   mons.each do |k|
     mon_ips.push(k['addr'][0..-3])
   end
-  return mon_ips
+  mon_ips
 end
 
-QUORUM_STATES = ['leader', 'peon']
-def have_quorum?()
-    # "ceph auth get-or-create-key" would hang if the monitor wasn't
-    # in quorum yet, which is highly likely on the first run. This
-    # helper lets us delay the key generation into the next
-    # chef-client run, instead of hanging.
-    #
-    # Also, as the UNIX domain socket connection has no timeout logic
-    # in the ceph tool, this exits immediately if the ceph-mon is not
-    # running for any reason; trying to connect via TCP/IP would wait
-    # for a relatively long timeout.
-    mon_status = %x[ceph --admin-daemon /var/run/ceph/ceph-mon.#{node['hostname']}.asok mon_status]
-    raise 'getting monitor state failed' unless $?.exitstatus == 0
-    state = JSON.parse(mon_status)['state']
-    return QUORUM_STATES.include?(state)
+QUORUM_STATES = %w(leader, peon)
+def have_quorum?
+  # "ceph auth get-or-create-key" would hang if the monitor wasn't
+  # in quorum yet, which is highly likely on the first run. This
+  # helper lets us delay the key generation into the next
+  # chef-client run, instead of hanging.
+  #
+  # Also, as the UNIX domain socket connection has no timeout logic
+  # in the ceph tool, this exits immediately if the ceph-mon is not
+  # running for any reason; trying to connect via TCP/IP would wait
+  # for a relatively long timeout.
+
+  cmd = Mixlib::ShellOut.new("ceph --admin-daemon /var/run/ceph/ceph-mon.#{node['hostname']}.asok mon_status")
+  cmd.run_command
+  cmd.error!
+
+  state = JSON.parse(cmd.stdout)['state']
+  QUORUM_STATES.include?(state)
 end
diff --git a/recipes/apt.rb b/recipes/apt.rb
index 67c5819..3704e9a 100644
--- a/recipes/apt.rb
+++ b/recipes/apt.rb
@@ -1,3 +1,4 @@
+
 include_recipe "apt"
 
 branch = node['ceph']['branch']
diff --git a/recipes/cephfs.rb b/recipes/cephfs.rb
index 3bd6839..741b7a3 100644
--- a/recipes/cephfs.rb
+++ b/recipes/cephfs.rb
@@ -25,7 +25,7 @@ filename = "/etc/ceph/ceph.client.#{client_name}.secret"
 
 ceph_client name do
   filename filename
-  caps ({"mon" => "allow r", "osd" => "allow rw", "mds" => "allow"})
+  caps ({ "mon" => "allow r", "osd" => "allow rw", "mds" => "allow" })
   as_keyring false
 end
 
diff --git a/recipes/osd.rb b/recipes/osd.rb
index 58858c0..7f74cf6 100644
--- a/recipes/osd.rb
+++ b/recipes/osd.rb
@@ -40,7 +40,7 @@ end
 
 package 'cryptsetup' do
   action :upgrade
-  not_if { search(:node,"hostname:#{node['hostname']} AND dmcrypt:true").empty? }
+  not_if { search(:node, "hostname:#{node['hostname']} AND dmcrypt:true").empty? }
 end
 
 service_type = node["ceph"]["osd"]["init_style"]
@@ -59,11 +59,11 @@ else
   # TODO: cluster name
   cluster = 'ceph'
 
-  osd_secret = if node['ceph']['encrypted_data_bags']
+  if node['ceph']['encrypted_data_bags']
     secret = Chef::EncryptedDataBagItem.load_secret(node["ceph"]["osd"]["secret_file"])
-    Chef::EncryptedDataBagItem.load("ceph", "osd", secret)["secret"]
+    osd_secret = Chef::EncryptedDataBagItem.load("ceph", "osd", secret)["secret"]
   else
-    mons[0]["ceph"]["bootstrap_osd_key"]
+    osd_secret = mons[0]["ceph"]["bootstrap_osd_key"]
   end
 
   execute "format as keyring" do
diff --git a/resources/client.rb b/resources/client.rb
index 26d8995..0ca1436 100644
--- a/resources/client.rb
+++ b/resources/client.rb
@@ -2,7 +2,7 @@ actions :add
 default_action :add
 
 attribute :name, :kind_of => String, :name_attribute => true
-attribute :caps, :kind_of => Hash, :default => {"mon" => "allow r", "osd" => "allow r"}
+attribute :caps, :kind_of => Hash, :default => { "mon" => "allow r", "osd" => "allow r" }
 
 # Whether to store the secret in a keyring file or a plain secret file
 attribute :as_keyring, :kind_of => [TrueClass, FalseClass], :default => true