Use kibana as the web frontend to logstash.

Add a kibana module that installs kibana and flat configuration files,
and also disables the previous boring bland web frontend.

Change-Id: I772c66f07d2bc3a88128e101074be9d4162e3f8a
Reviewed-on: https://review.openstack.org/27089
Reviewed-by: Jesse Keating <jesse.keating@rackspace.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins

modules/kibana/files/config.rb

@@ -0,0 +1,140 @@
+module KibanaConfig
+
+  # A Note: While the only option you really have to set is "Elasticsearch" it
+  # is HIGHLY recommended you glance over every option. I personally consider
+  # 'Facet_index_limit' really important.
+
+  # Your elastic search server(s). This may be set as an array for round robin
+  # load balancing
+  # Elasticsearch = ["elasticsearch1:9200","elasticsearch2:9200"]
+  Elasticsearch = "localhost:9200"
+
+  #Set the Net::HTTP read/open timeouts for the connection to the ES backend
+  ElasticsearchTimeout = 500
+
+  # The port Kibana should listen on
+  KibanaPort = 5601
+
+  # The adress ip Kibana should listen on. Comment out or set to
+  # 0.0.0.0 to listen on all interfaces.
+  KibanaHost = '127.0.0.1'
+
+  # The record type as defined in your logstash configuration.
+  # Seperate multiple types with a comma, no spaces. Leave blank
+  # for all.
+  Type = ''
+
+  # Results to show per page
+  Per_page = 100
+
+  # Timezone. Leave this set to 'user' to have the user's browser autocorrect.
+  # Otherwise, set a timezone string
+  # Examples: 'UTC', 'America/Phoenix', 'Europe/Athens', MST
+  # You can use `date +%Z` on linux to get your timezone string
+  Timezone = 'UTC'
+
+  # Format for timestamps. Defaults to mm/dd HH:MM:ss.
+  # For syntax see: http://blog.stevenlevithan.com/archives/date-time-format
+  # Time_format = 'isoDateTime'
+  Time_format = 'isoDateTime'
+
+  # Change which fields are shown by default. Must be set as an array
+  # Default_fields = ['@fields.vhost','@fields.response','@fields.request']
+  Default_fields = ['@message']
+
+  # If set to true, Kibana will use the Highlight feature of Elasticsearch to
+  # display highlighted search results
+  Highlight_results = true
+
+  # A field needs to be specified for the highlight feature. By default,
+  # Elasticsearch doesn't allow highlighting on _all because the field has to
+  # be either stored or part of the _source field.
+  Highlighted_field = "@message"
+
+  # Make URLs clickable in detailed view
+  Clickable_URLs = true
+
+  # The default operator used if no explicit operator is specified.
+  # For example, with a default operator of OR, the query capital of
+  # Hungary is translated to capital OR of OR Hungary, and with default
+  # operator of AND, the same query is translated to capital AND of AND
+  # Hungary. The default value is OR.
+  Default_operator = 'OR'
+
+  # When using analyze, use this many of the most recent
+  # results for user's query
+  Analyze_limit = 2000
+
+  # Show this many results in analyze/trend/terms/stats modes
+  Analyze_show = 25
+
+  # Show this many results in an rss feed
+  Rss_show = 25
+
+  # Show this many results in an exported file
+  Export_show = 2000
+
+  # Delimit exported file fields with what?
+  # You may want to change this to something like "\t" (tab) if you have
+  # commas in your logs
+  Export_delimiter = ","
+
+  # You may wish to insert a default search which all user searches
+  # must match. For example @source_host:www1 might only show results
+  # from www1.
+  Filter = ''
+
+  # When searching, Kibana will attempt to only search indices
+  # that match your timeframe, to make searches faster. You can
+  # turn this behavior off if you use something other than daily
+  # indexing
+  Smart_index = true
+
+  # You can define your custom pattern here for index names if you
+  # use something other than daily indexing. Pattern needs to have
+  # date formatting like '%Y.%m.%d'.  Will accept an array of smart
+  # indexes.
+  # Smart_index_pattern = ['logstash-web-%Y.%m.%d', 'logstash-mail-%Y.%m.%d']
+  Smart_index_pattern = 'logstash-%Y.%m.%d'
+
+  # Number of seconds between each index. 86400 = 1 day.
+  Smart_index_step = 86400
+
+  # ElasticSearch has a default limit on URL size for REST calls,
+  # so Kibana will fall back to _all if a search spans too many
+  # indices. Use this to set that 'too many' number. By default this
+  # is set really high, ES might not like this
+  Smart_index_limit = 150
+
+  # Elasticsearch has an internal mechanism called "faceting" for performing
+  # analysis that we use for the "Stats" and "Terms" modes. However, on large
+  # data sets/queries facetting can cause ES to crash if there isn't enough
+  # memory available. It is suggested that you limit the number of indices that
+  # Kibana will use for the "Stats" and "Terms" to prevent ES crashes. For very
+  # large data sets and undersized ES clusers, a limit of 1 is not unreasonable.
+  # Default is 0 (unlimited)
+  Facet_index_limit = 0
+
+  # You probably don't want to touch anything below this line
+  # unless you really know what you're doing
+
+  # Primary field. By default Elastic Search has a special
+  # field called _all that is searched when no field is specified.
+  # Dropping _all can reduce index size significantly. If you do that
+  # you'll need to change primary_field to be '@message'
+  Primary_field = '@message'
+
+  # Default Elastic Search index to query
+  Default_index = '@message'
+
+  # TODO: This isn't functional yet
+  # Prevent wildcard search terms which result in extremely slow queries
+  # See: http:#www.elasticsearch.org/guide/reference/query-dsl/wildcard-query.html
+  Disable_fullscan = false
+
+  # Set headers to allow kibana to be loaded in an iframe from a different origin.
+  Allow_iframed = false
+
+  # Use this interval as fallback.
+  Fallback_interval = 900
+end

modules/kibana/files/kibana.init

@@ -0,0 +1,22 @@
+# kibana - web instance
+#
+# Copied from http://cookbook.logstash.net/recipes/using-upstart/
+
+description     "kibana web instance"
+
+start on virtual-filesystems
+stop on runlevel [06]
+
+# Respawn it if the process exits
+respawn
+respawn limit 5 30
+expect fork
+
+chdir /opt/kibana/kibana
+
+script
+
+  su -s /bin/sh -c 'exec "$0" "$@"' kibana -- /usr/bin/ruby /opt/kibana/kibana/kibana.rb &
+  emit kibana-running
+end script
+

modules/kibana/manifests/init.pp

@@ -0,0 +1,90 @@
+# Copyright 2013 Hewlett-Packard Development Company, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# Class to install kibana frontend to logstash.
+#
+class kibana {
+
+  group { 'kibana':
+    ensure => present,
+  }
+
+  user { 'kibana':
+    ensure     => present,
+    comment    => 'Kibana User',
+    home       => '/opt/kibana',
+    gid        => 'kibana',
+    shell      => '/bin/bash',
+    membership => 'minimum',
+    require    => Group['kibana'],
+  }
+
+  file { '/opt/kibana':
+    ensure   => directory,
+    owner    => 'kibana',
+    group    => 'kibana',
+    mode     => '0644',
+    recurse  => true,
+    require  => User['kibana'],
+  }
+
+  vcsrepo { '/opt/kibana/kibana':
+    ensure   => latest,
+    provider => git,
+    source   => 'https://github.com/rashidkpc/Kibana.git',
+    revision => 'v0.2.0',
+    require  => File['/opt/kibana'],
+  }
+
+  package { 'bundler':
+    ensure   => latest,
+    provider => 'gem',
+  }
+
+  exec { 'install_kibana':
+    command     => 'bundle install',
+    path        => ['/usr/bin', '/usr/local/bin'],
+    cwd         => '/opt/kibana/kibana',
+    logoutput   => true,
+    refreshonly => true,
+    subscribe   => Vcsrepo['/opt/kibana/kibana'],
+    require     => [
+      User['kibana'],
+      Package['bundler'],
+    ],
+  }
+
+  file { '/opt/kibana/kibana/KibanaConfig.rb':
+    ensure  => present,
+    source  => 'puppet:///modules/kibana/config.rb',
+    owner   => 'kibana',
+    group   => 'kibana',
+    require => Vcsrepo['/opt/kibana/kibana'],
+  }
+
+  file { '/etc/init/kibana.conf':
+    ensure => present,
+    source => 'puppet:///modules/kibana/kibana.init',
+  }
+
+  service { 'kibana':
+    ensure  => running,
+    require => [
+      File['/etc/init/kibana.conf'],
+      File['/opt/kibana/kibana/KibanaConfig.rb'],
+      Exec['install_kibana'],
+    ],
+  }
+
+}

modules/logstash/manifests/web.pp

@@ -16,15 +16,10 @@
 #
 class logstash::web (
   $vhost_name = $::fqdn,
-  $serveradmin = "webmaster@${::fqdn}"
+  $serveradmin = "webmaster@${::fqdn}",
+  $frontend = 'internal'
 ) {
   include apache
-  apache::vhost { $vhost_name:
-    port     => 80,
-    docroot  => 'MEANINGLESS ARGUMENT',
-    priority => '50',
-    template => 'logstash/logstash.vhost.erb',
-  }
   a2mod { 'rewrite':
     ensure => present,
   }
@@ -37,19 +32,41 @@ class logstash::web (
 
   include logstash
 
-  file { '/etc/init/logstash-web.conf':
-    ensure  => present,
-    source  => 'puppet:///modules/logstash/logstash-web.conf',
-    replace => true,
-    owner   => 'root',
+  case $frontend {
+    'internal': {
+      file { '/etc/init/logstash-web.conf':
+        ensure  => present,
+        source  => 'puppet:///modules/logstash/logstash-web.conf',
+        replace => true,
+        owner   => 'root',
+      }
+
+      service { 'logstash-web':
+        ensure    => running,
+        enable    => true,
+        require   => [
+          Class['logstash'],
+          File['/etc/init/logstash-web.conf'],
+        ],
+      }
+
+      $vhost = 'logstash/logstash.vhost.erb'
+    }
+
+    'kibana': {
+      include kibana
+      $vhost = 'logstash/kibana.vhost.erb'
+    }
+
+    default: {
+      fail("Unknown frontend to logstash: ${frontend}.")
+    }
   }
 
-  service { 'logstash-web':
-    ensure    => running,
-    enable    => true,
-    require   => [
-      Class['logstash'],
-      File['/etc/init/logstash-web.conf'],
-    ]
+  apache::vhost { $vhost_name:
+    port     => 80,
+    docroot  => 'MEANINGLESS ARGUMENT',
+    priority => '50',
+    template => $vhost,
   }
 }

modules/logstash/templates/kibana.vhost.erb

@@ -0,0 +1,13 @@
+<VirtualHost <%= scope.lookupvar("::logstash::web::vhost_name") %>:80>
+             ServerName <%= scope.lookupvar("::logstash::web::vhost_name") %>
+             ServerAdmin <%= scope.lookupvar("::logstash::web::serveradmin") %>
+
+             ErrorLog ${APACHE_LOG_DIR}/<%= scope.lookupvar("::logstash::web::vhost_name") %>-error.log
+
+             LogLevel warn
+
+             CustomLog ${APACHE_LOG_DIR}/<%= scope.lookupvar("::logstash::web::vhost_name") %>-access.log combined
+
+             ProxyPass / http://127.0.0.1:5601/ retry=0
+             ProxyPassReverse / http://127.0.0.1:5601/
+</VirtualHost>

modules/openstack_project/manifests/logstash.pp

@@ -25,8 +25,10 @@ class openstack_project::logstash (
   class { 'logstash::indexer':
     conf_template => 'openstack_project/logstash/indexer.conf.erb',
   }
+  class { 'logstash::web':
+    frontend => 'kibana',
+  }
   include logstash::elasticsearch
-  include logstash::web
 
   package { 'redis-server':
     ensure => 'absent',