elasticsearch resource

Use the elasticsearch resource to test the status of a node against a running Elasticsearch cluster. Chef InSpec retrieves the node list from the cluster node URL provided (defaults to http://localhost:9200) and provides the ability to query a variety of settings and statuses.

Availability

Install

This resource is distributed with Chef InSpec and is automatically available for use.

Version

This resource first became available in v1.43.5 of InSpec.

Syntax

describe elasticsearch do
  its('property') { should cmp 'value' }
end

Supported Resource Parameters

The elasticsearch resource accepts several optional resource parameters:

url

the top-level URL of an Elasticsearch node in the cluster. If your Elasticsearch installation is not served out of the top-level directory at the host, be sure to specify the full URL; for example: http://my-load-balancer/elasticsearch. Default: http://localhost:9200

username

a username to use to log in with HTTP-Basic authentication. If username is provided, a password must also be provided.

password

a password to use to log in with HTTP-Basic authentication. If password is provided, a username must also be provided.

ssl_verify

if false, SSL certificate validation will be disabled. Default: true

In addition, the elasticsearch resource allows for filtering the nodes returned by property before executing the tests:

describe elasticsearch.where { node_name == 'one-off-node' } do
  its('version') { should eq '1.2.3' }
end

describe elasticsearch.where { process.mlockall == false } do
  its('count') { should cmp 0 }
end

To simply check if nodes exist that match the criteria, use the exist matcher:

describe elasticsearch.where { cluster_name == 'my_cluster' } do
  it { should exist }
end

Properties

The following are the different properties of the resource:

Since the elasticsearch resource is meant for use on a cluster, each property will return an array of the values for each node that matches any provided search criteria. Using InSpec’s cmp matcher helps avoid issues when comparing values when there is only a single match (i.e. when the cluster only contains a single node or the where filter criteria provided only returns a single node).

build_hash

The build hash property returns the build hash for each of the nodes.

its('build_hash') { should cmp 'b2f0c09' }

cluster_name

The cluster_name property returns the cluster names of each of the nodes.

its('cluster_name') { should cmp 'my_cluster' }

host

The host property returns the hostname of each of the nodes. This may return an IP address if the node is improperly performing DNS resolution or has no hostname set.

its('host') { should cmp 'my.hostname.mycompany.biz' }

http

The http property returns a hash of HTTP-related settings for each of the nodes. In this example, the first method is used to grab only the first node’s HTTP-related info and is a way of removing the item from the Array if only one node is being queried.

its('http.first.max_content_length_in_bytes') { should cmp 123456 }

ingest

The ingest property returns ingest-related settings and capabilities, such as available processors.

its('ingest.first.processors.count') { should be >= 1 }

ip

The ip property returns the IP address of each of the nodes.

its('ip') { should cmp '192.168.1.100' }

jvm

The jvm property returns Java Virtual Machine related parameters for each of the nodes.

its('jvm.first.version') { should cmp '1.8.0_141' }

module_list

The module_list property returns a list of enabled modules for each node in the cluster.

its('module_list.first') { should include 'my_module' }

modules

The modules property returns detailed information about each enabled module for each node in the cluster.

its('modules.first') { should include 'lang-groovy' }

node_name

The node_name property returns the node name for each node in the cluster.

its('node_name') { should cmp 'node1' }

node_id

The node_id property returns the node IDs of each of the nodes in the cluster.

its('node_id') { should include 'my_node_id' }

os

The os property returns OS-related information about each node in the cluster.

its('os.first.arch') { should cmp 'amd64' }

plugin_list

The plugin_list property returns a list of enabled plugins for each node in the cluster. For more additional information about each plugin, use the plugins property.

its('plugin_list.first') { should include 'my_plugin' }

plugins

The plugins property returns detailed information about each enabled plugin for each node in the cluster.

its('plugins.first') { should include 'my_plugin' }

process

The process property returns process information for each node in the cluster, such as the process ID.

its('process.first.mlockall') { should cmp true }

roles

The roles property returns the role for each of the nodes in the cluster.

its('roles') { should include 'master' }

settings

The settings property returns all the configuration settings for each node in the cluster. These settings usually include those set in the elasticsearch.yml as well as those set via -Des. or -E flags at startup. Use the inspec shell to explore the various setting keys that are available.

its('settings.first.path.home') { should cmp '/usr/share/elasticsearch' }

total_indexing_buffer

The total_indexing_buffer property returns the total indexing buffer for each node in the cluster.

its('total_indexing_buffer') { should cmp 123456 }

transport

The transport property returns transport-related settings for each node in the cluster, such as the bound and published addresses.

its('transport.first.bound_address') { should cmp '1.2.3.4:9200' }

transport_address

The transport_address property returns the bound transport address for each node in the cluster.

its('transport_address') { should cmp '1.2.3.4:9200' }

version

The version property returns the version of Elasticsearch running on each node of the cluster.

its('version') { should cmp '5.5.2' }

Examples

Test to verify the specific module. Uses additional Ruby to find a specific module and assert a value. For a succinct list of the names of each of the modules enabled, use the module_list property.

modules = elasticsearch.modules.first
lang_groovy_module = modules.find { |mod| mod.name == 'lang-groovy' }

describe 'lang-groovy module version' do
  subject { lang_groovy_module }
  its('version') { should cmp '5.5.2' }
end

Tests to verify the specific plugin. Uses additional Ruby to find a specific plugin and assert a value. For a succinct list of the names of each of the plugins enabled, use the plugin_list property.

plugins = elasticsearch.plugins.first
my_plugin = plugins.find { |plugin| plugin.name == 'my_plugin' }

describe 'my_plugin plugin version' do
  subject { my_plugin }
  its('version') { should cmp '1.2.3' }
end

Matchers

For a full list of available matchers, see our Universal Matchers page.