puppet-lookup - Interactive Hiera lookup
Does Hiera lookups from the command line. Since this command needs access to your Hiera data, make sure to run it on a node that has a copy of that data. This usually means logging into a Puppet Server node and running 'puppet lookup' with sudo. The most common version of this command is: 'puppet lookup KEY --node NAME --environment ENV --explain'
PUPPET-LOOKUP(8) Puppet manual PUPPET-LOOKUP(8)
NAME
puppet-lookup - Interactive Hiera lookup
SYNOPSIS
Does Hiera lookups from the command line.
Since this command needs access to your Hiera data, make sure to run it
on a node that has a copy of that data. This usually means logging into
a Puppet Server node and running 'puppet lookup' with sudo.
The most common version of this command is:
'puppet lookup KEY --node NAME --environment ENV --explain'
USAGE
puppet lookup [--help] [--type TYPESTRING] [--merge
first|unique|hash|deep] [--knock-out-prefix PREFIX-STRING]
[--sort-merged-arrays] [--merge-hash-arrays] [--explain] [--environment
ENV] [--default VALUE] [--node NODE-NAME] [--facts FILE] [--compile]
[--render-as s|json|yaml|binary|msgpack] keys
DESCRIPTION
The lookup command is a CLI for Puppet's 'lookup()' function. It
searches your Hiera data and returns a value for the requested lookup
key, so you can test and explore your data. It is a modern replacement
for the 'hiera' command. Lookup uses the setting for global hiera.yaml
from puppet's config, and the environment to find the environment level
hiera.yaml as well as the resulting modulepath for the environment (for
hiera.yaml files in modules). Hiera usually relies on a node's facts to
locate the relevant data sources. By default, 'puppet lookup' uses
facts from the node you run the command on, but you can get data for
any other node with the '--node NAME' option. If possible, the lookup
command will use the requested node's real stored facts from PuppetDB;
if PuppetDB isn't configured or you want to provide arbitrary fact val-
ues, you can pass alternate facts as a JSON or YAML file with '--facts
FILE'.
If you're debugging your Hiera data and want to see where values are
coming from, use the '--explain' option.
If '--explain' isn't specified, lookup exits with 0 if a value was
found and 1 otherwise. With '--explain', lookup always exits with 0
unless there is a major error.
You can provide multiple lookup keys to this command, but it only
returns a value for the first found key, omitting the rest.
For more details about how Hiera works, see the Hiera documentation:
https://puppet.com/docs/puppet/latest/hiera_intro.html
OPTIONS
o --help: Print this help message.
o --explain Explain the details of how the lookup was performed and
where the final value came from (or the reason no value was found).
o --node NODE-NAME Specify which node to look up data for; defaults
to the node where the command is run. Since Hiera's purpose is to
provide different values for different nodes (usually based on
their facts), you'll usually want to use some specific node's facts
to explore your data. If the node where you're running this command
is configured to talk to PuppetDB, the command will use the
requested node's most recent facts. Otherwise, you can override
facts with the '--facts' option.
o --facts FILE Specify a .json or .yaml file of key => value mappings
to override the facts for this lookup. Any facts not specified in
this file maintain their original value.
o --environment ENV Like with most Puppet commands, you can specify
an environment on the command line. This is important for lookup
because different environments can have different Hiera data. This
environment will be always be the one used regardless of any other
factors.
o --merge first|unique|hash|deep: Specify the merge behavior, over-
riding any merge behavior from the data's lookup_options. 'first'
returns the first value found. 'unique' appends everything to a
merged, deduplicated array. 'hash' performs a simple hash merge by
overwriting keys of lower lookup priority. 'deep' performs a deep
merge on values of Array and Hash type. There are additional
options that can be used with 'deep'.
o --knock-out-prefix PREFIX-STRING Can be used with the 'deep' merge
strategy. Specifies a prefix to indicate a value should be removed
from the final result.
o --sort-merged-arrays Can be used with the 'deep' merge strategy.
When this flag is used, all merged arrays are sorted.
o --merge-hash-arrays Can be used with the 'deep' merge strategy.
When this flag is used, hashes WITHIN arrays are deep-merged with
their counterparts by position.
o --explain-options Explain whether a lookup_options hash affects
this lookup, and how that hash was assembled. (lookup_options is
how Hiera configures merge behavior in data.)
o --default VALUE A value to return if Hiera can't find a value in
data. For emulating calls to the 'lookup()' function that include a
default.
o --type TYPESTRING: Assert that the value has the specified type.
For emulating calls to the 'lookup()' function that include a data
type.
o --compile Perform a full catalog compilation prior to the lookup.
If your hierarchy and data only use the $facts, $trusted, and
$server_facts variables, you don't need this option; however, if
your Hiera configuration uses arbitrary variables set by a Puppet
manifest, you might need this option to get accurate data. No cata-
log compilation takes place unless this flag is given.
o --render-as s|json|yaml|binary|msgpack Specify the output format of
the results; "s" means plain text. The default when producing a
value is yaml and the default when producing an explanation is s.
EXAMPLE
To look up 'key_name' using the Puppet Server node's facts: $ puppet
lookup key_name
To look up 'key_name' using the Puppet Server node's arbitrary vari-
ables from a manifest, and classify the node if applicable: $ puppet
lookup key_name --compile
To look up 'key_name' using the Puppet Server node's facts, overridden
by facts given in a file: $ puppet lookup key_name --facts
fact_file.yaml
To look up 'key_name' with agent.local's facts: $ puppet lookup --node
agent.local key_name
To get the first value found for 'key_name_one' and 'key_name_two' with
agent.local's facts while merging values and knocking out the prefix
'foo' while merging: $ puppet lookup --node agent.local --merge deep
--knock-out-prefix foo key_name_one key_name_two
To lookup 'key_name' with agent.local's facts, and return a default
value of 'bar' if nothing was found: $ puppet lookup --node agent.local
--default bar key_name
To see an explanation of how the value for 'key_name' would be found,
using agent.local's facts: $ puppet lookup --node agent.local --explain
key_name
COPYRIGHT
Copyright (c) 2015 Puppet Inc., LLC Licensed under the Apache 2.0
License
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+--------------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------------+
|Availability | system/management/puppet |
+---------------+--------------------------+
|Stability | Volatile |
+---------------+--------------------------+
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from https://github.com/puppetlabs/puppet.
Further information about this software can be found on the open source
community website at http://puppetlabs.com/.
Puppet, Inc. January 2022 PUPPET-LOOKUP(8)