nagios_selinux(8) - Linux man page

Name

nagios_selinux - Security Enhanced Linux Policy for the nagios processes

Description

Security-Enhanced Linux secures the nagios processes via flexible mandatory access control.

The nagios processes execute with the nagios_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.

For example:

ps -eZ | grep nagios_t

Entrypoints

The nagios_t SELinux type can be entered via the "nagios_exec_t" file type. The default entrypoint paths for the nagios_t domain are the following:"

/usr/s?bin/nagios

Process Types

SELinux defines process types (domains) for each process running on the system

You can see the context of a process using the -Z option to ps

Policy governs the access confined processes have to files. SELinux nagios policy is very flexible allowing users to setup their nagios processes in as secure a method as possible.

The following process types are defined for nagios:

nagios_t, nagios_mail_plugin_t, nagios_checkdisk_plugin_t, nagios_services_plugin_t, nagios_eventhandler_plugin_t, nagios_system_plugin_t, nagios_unconfined_plugin_t, nagios_admin_plugin_t

Note: semanage permissive -a nagios_t

can be used to make the process type nagios_t permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.

File Contexts

SELinux requires files to have an extended attribute to define the file type.

You can see the context of a file using the -Z option to ls

Policy governs the access confined processes have to these files. SELinux nagios policy is very flexible allowing users to setup their nagios processes in as secure a method as possible.

The following file types are defined for nagios:

nagios_admin_plugin_exec_t

- Set files with the nagios_admin_plugin_exec_t type, if you want to transition an executable to the nagios_admin_plugin_t domain.

nagios_checkdisk_plugin_exec_t

- Set files with the nagios_checkdisk_plugin_exec_t type, if you want to transition an executable to the nagios_checkdisk_plugin_t domain.

nagios_etc_t

- Set files with the nagios_etc_t type, if you want to store nagios files in the /etc directories.

nagios_eventhandler_plugin_exec_t

- Set files with the nagios_eventhandler_plugin_exec_t type, if you want to transition an executable to the nagios_eventhandler_plugin_t domain.

nagios_eventhandler_plugin_tmp_t

- Set files with the nagios_eventhandler_plugin_tmp_t type, if you want to store nagios eventhandler plugin temporary files in the /tmp directories.

nagios_exec_t

- Set files with the nagios_exec_t type, if you want to transition an executable to the nagios_t domain.

nagios_initrc_exec_t

- Set files with the nagios_initrc_exec_t type, if you want to transition an executable to the nagios_initrc_t domain.

nagios_log_t

- Set files with the nagios_log_t type, if you want to treat the data as nagios log data, usually stored under the /var/log directory.

nagios_mail_plugin_exec_t

- Set files with the nagios_mail_plugin_exec_t type, if you want to transition an executable to the nagios_mail_plugin_t domain.

nagios_services_plugin_exec_t

- Set files with the nagios_services_plugin_exec_t type, if you want to transition an executable to the nagios_services_plugin_t domain.

nagios_spool_t

- Set files with the nagios_spool_t type, if you want to store the nagios files under the /var/spool directory.

nagios_system_plugin_exec_t

- Set files with the nagios_system_plugin_exec_t type, if you want to transition an executable to the nagios_system_plugin_t domain.

nagios_system_plugin_tmp_t

- Set files with the nagios_system_plugin_tmp_t type, if you want to store nagios system plugin temporary files in the /tmp directories.

nagios_tmp_t

- Set files with the nagios_tmp_t type, if you want to store nagios temporary files in the /tmp directories.

nagios_unconfined_plugin_exec_t

- Set files with the nagios_unconfined_plugin_exec_t type, if you want to transition an executable to the nagios_unconfined_plugin_t domain.

nagios_var_run_t

- Set files with the nagios_var_run_t type, if you want to store the nagios files under the /run directory.

Note: File context can be temporarily modified with the chcon command. If you want to permanently change the file context you need to use the semanage fcontext command. This will modify the SELinux labeling database. You will need to use restorecon to apply the labels.

Managed Files

The SELinux process type nagios_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions.

initrc_tmp_t

mnt_t

/mnt(/[^/]*)

/mnt(/[^/]*)?

/rhev(/[^/]*)?

/media(/[^/]*)

/media(/[^/]*)?

/etc/rhgb(/.*)?

/media/.hal-.*

/net

/afs

/misc

/rhev

nagios_log_t

/var/log/nagios(/.*)?

/var/log/netsaint(/.*)?

nagios_tmp_t
nagios_var_run_t

/var/run/nagios.*

root_t

/initrd

tmp_t

/tmp

/usr/tmp

/var/tmp

/var/tmp/vi.recover

Commands

semanage fcontext can also be used to manipulate default file context mappings.

semanage permissive can also be used to manipulate whether or not a process type is permissive.

semanage module can also be used to enable/disable/install/remove policy modules.

system-config-selinux is a GUI tool available to customize SELinux policy settings.

Author

This manual page was auto-generated using sepolicy manpage by mgrepl.