pynag man page

pynag — command line front for manipulating nagios configuration


pynag <sub-command> [options] [arguments]


pynag is a command-line utility that can be used to view or change current nagios configuration.



print to screen nagios configuration objects as specified by a WHERE clause

pynag list [attribute1] [attribute2] [WHERE ...]

modify specific attributes of nagios objects as specified by a WHERE and SET clause

pynag update set attr1=value WHERE attr=value and attr=value

Delete objects from nagios configuration as specified by a WHERE clause

pynag delete delete <WHERE ...>

Add a new object definition

pynag add <object_type> <attr1=value1> [attr2=value2]

Copy objects, specifiying which attributes to change

pynag copy <WHERE ...> <SET attr1=value1 [attr2=value2] ...>

Executes the currently configured check command for a host or a service

pynag execute <host_name> [service_description]

modify values in main nagios configuration file (nagios.cfg)

pynag config [--set <attribute=value>] [--old_value=attribute]
pynag config [--append <attribute=value>] [--old_value=attribute]
pynag config [--remove <attribute>] [--old_value=attribute]
pynag config [--get <attribute>]

Where Statements

Some Subcommands use WHERE statements to filter which objects to work with.  Where has certain similarity with SQL syntax.

WHERE <attr=value> [AND attr=value] [OR attr=value] 
[another where statement]

where "attr" is any nagios attribute (i.e. host_name or service_description).

pynag list WHERE host_name=localhost and object_type=service
pynag list WHERE object_type=host or object_type=service

Any search attributes have the same syntax as the pynag filter. For example these work just fine:

pynag list WHERE host_name__contains=production
pynag list WHERE host_name__startswith=prod
pynag list WHERE host_name__notcontains=test
pynag list host_name address WHERE address__exists=True
pynag list host_name WHERE register__isnot=0

The pynag filter supports few parameters that are not just attributes.


  • filename                 -- The filename which the object belongs
  • id                       -- pynag unique identifier for the object
  • effective_command_line   -- command which nagios will execute

Of course these can be combined with the pynag filter syntax:

pynag list where filename__startswith=/etc/nagios/conf.d/
pynag list host_name service_description effective_command_line

For detailed description of the filter see pydoc for pynag.Model.ObjectDefintion.filter()

Set Statements

Subcommands that use SET statements (like update or copy) use them a list of attributes change for a specific object.

SET <attr1=value1> [attr2=value2] [...]
pynag update SET address= WHERE host_name=localhost and object_type=host


List all services that have myhost as a host_name

pynag list host_name service_description WHERE host_name=myhost and object_type=service

Set check_period to 24x7 on all services that belong to host myhost

pynag update set check_period=24x7 WHERE host_name=myhost

list examples

pynag list host_name address WHERE object_type=host
pynag list host_name service_description WHERE host_name=examplehost and object_type=service

update examples

pynag update SET host_name=newhostname WHERE host_name=oldhostname
pynag update SET address= WHERE host_name='' and object_type=host

copy examples

pynag copy SET host_name=newhostname WHERE  host_name=oldhostname
pynag copy SET address= WHERE host_name='' and object_type=host

add examples

pynag add host host_name=examplehost use=generic-host address=
pynag add service service_description="Test Service" use="check_nrpe" host_name="localhost"

delete examples

pynag delete where object_type=service and host_name='mydeprecated_host'
pynag delete where filename__startswith='/etc/nagios/myoldhosts'

execute examples

pynag execute localhost
pynag execute localhost "Disk Space

Additional Resources

See for more information.


Pall Sigurdsson and Tomas Edwardsson


August 05, 2014 0.9.1 pynag