what is the usage of Puppet apply command

Question

Could you explain with example the usage of puppet apply command?

Answer 1

Puppet apply- Applies a standalone Puppet manifest to the local system.

This is the standalone puppet execution tool; use it to apply individual manifests.

When provided with a modulepath, via command line or config file, puppet apply can effectively mimic the catalog that would be served by puppet master with access to the same modules, although there are some subtle differences. 

When combined with scheduling and an automated system for pushing manifests, this can be used to implement a serverless Puppet site.

Most users should use 'puppet agent' and 'puppet master' for site-wide manifests.

Example:

$ puppet apply -l /tmp/manifest.log manifest.pp
$ puppet apply --modulepath=/root/dev/modules -e "include ntpd::server" 
$ puppet apply --catalog catalog.json