outsourcing NRPE to cd_nrpe
This commit is contained in:
Arne Teuke
10
README.md
10
README.md
@@ -1,6 +1,6 @@
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|Repo Name| version | Build Status|
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|---|---|---|---|
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|`cd_nagios`| 0.0.1.0 | [](https://jenkins.confdroid.com/job/cd_nagios/)|
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|`cd_nagios`| 0.0.1.1 | [](https://jenkins.confdroid.com/job/cd_nagios/)|
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### Synopsis
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Nagios is a powerful open source software solution for monitoring your IT environments.
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@@ -25,7 +25,8 @@ Nagios is a powerful open source software solution for monitoring your IT enviro
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* [SELINUX](#selinux)
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* [Certbot](#certbot)
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* [Httpd vHost Files](#httpd-vhost-files)
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* [Manage additional resources]
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* [Client Connections](#client-connections)
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* [Manage additional resources](#manage-additional-resources)
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* [Known Problems](#known-problems)
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* [Support](#support)
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* [Tests](#tests)
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@@ -141,6 +142,11 @@ If you prefer to use https but use self-signed certs or your own CA, simply set
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### httpd vHost files
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by Default, Nagios creates its own nagios.conf file, which is not a vhost file and relies on the main ssd.conf. However, as Nagios might be running on a regular web server with various other web instances (not recommended through for performance reasons), we will not want to manage ssl.conf directly, hence the module creates a vhost for the ssl host.
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### Client Connections
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In order to monitor clients, NAGIOS must be able to connect to them. There are multiple ways of doing so, the most common ones being NRPE and SSH.
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So far this module works through the usage of NRPE, which by default is enabled. Class cd_nagios::client::nrpe configures nrpe.cfg and opens the required firewall port on clients (optional,default).
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### Manage additional resources
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### Known Problems
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@@ -26,114 +26,117 @@ class cd_nagios::client::target (
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) inherits cd_nagios::params {
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if $::fqdn != $ng_nagios_server {
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if $ng_include_nrpe == true {
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require cd_nagios::main::install
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require cd_nrpe
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@@nagios_host { $::fqdn:
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ensure => $ng_ping_ensure,
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alias => $::hostname,
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address => $::fqdn,
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use => 'linux-server',
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target => $ng_target_host,
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hostgroups => 'linux-servers',
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contacts => 'ops',
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max_check_attempts => $ng_max_check_attempts,
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notification_period => '24x7',
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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check_command => "check_ping!${ng_ping_warn}!${ng_ping_crit}",
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notify => Service[$ng_user],
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}
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@@nagios_host { $::fqdn:
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ensure => $ng_ping_ensure,
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alias => $::hostname,
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address => $::fqdn,
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use => 'linux-server',
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target => $ng_target_host,
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hostgroups => 'linux-servers',
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contacts => 'ops',
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max_check_attempts => $ng_max_check_attempts,
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notification_period => '24x7',
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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check_command => "check_ping!${ng_ping_warn}!${ng_ping_crit}",
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notify => Service[$ng_user],
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}
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@@nagios_service { "root_partition_${::hostname}":
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ensure => $ng_disk_ensure,
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check_command => "check_nrpe!check_disk!${ng_disk_warn}!${ng_disk_crit}!/",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_root_partition",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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}
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@@nagios_service { "root_partition_${::hostname}":
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ensure => $ng_disk_ensure,
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check_command => "check_nrpe!check_disk!${ng_disk_warn}!${ng_disk_crit}!/",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_root_partition",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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}
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@@nagios_service { "Swap_Usage_${::hostname}":
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ensure => $ng_swap_ensure,
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check_command => "check_nrpe!check_swap!${ng_swap_warn}!${ng_swap_crit}",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_swap_usage",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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}
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@@nagios_service { "Swap_Usage_${::hostname}":
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ensure => $ng_swap_ensure,
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check_command => "check_nrpe!check_swap!${ng_swap_warn}!${ng_swap_crit}",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_swap_usage",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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}
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@@nagios_service { "Local_Users_${::hostname}":
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ensure => $ng_users_ensure,
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check_command => "check_nrpe!check_users!${ng_users_warn}!${ng_users_crit}",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_local_users",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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}
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@@nagios_service { "Local_Users_${::hostname}":
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ensure => $ng_users_ensure,
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check_command => "check_nrpe!check_users!${ng_users_warn}!${ng_users_crit}",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_local_users",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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}
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@@nagios_service { "Total Processes_${::hostname}":
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ensure => $ng_procs_tot_ens,
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check_command => "check_nrpe!check_procs!${ng_procs_tot_warn}!${ng_procs_tot_crit}!${ng_procs_tot_param}",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_total_processes",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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}
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@@nagios_service { "Total Processes_${::hostname}":
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ensure => $ng_procs_tot_ens,
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check_command => "check_nrpe!check_procs!${ng_procs_tot_warn}!${ng_procs_tot_crit}!${ng_procs_tot_param}",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_total_processes",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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}
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@@nagios_service { "Zombie Processes_${::hostname}":
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ensure => $ng_procs_z_ensure,
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check_command => "check_nrpe!check_procs!${ng_procs_z_warn}!${ng_procs_z_crit}!${ng_procs_z_param}",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_zombie_processes",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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}
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@@nagios_service { "Zombie Processes_${::hostname}":
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ensure => $ng_procs_z_ensure,
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check_command => "check_nrpe!check_procs!${ng_procs_z_warn}!${ng_procs_z_crit}!${ng_procs_z_param}",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_zombie_processes",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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}
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@@nagios_service { "Current_Load_${::hostname}":
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ensure => $ng_load_ensure,
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check_command => "check_nrpe!check_load!${ng_load_warn}!${ng_load_crit}",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_current_load",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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@@nagios_service { "Current_Load_${::hostname}":
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ensure => $ng_load_ensure,
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check_command => "check_nrpe!check_load!${ng_load_warn}!${ng_load_crit}",
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use => 'generic-service',
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host_name => $::fqdn,
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contacts => 'ops',
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notification_period => '24x7',
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service_description => "${::hostname}_current_load",
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servicegroups => 'linux-services',
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target => $ng_target_service,
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owner => $ng_user,
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group => $ng_user,
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mode => '0640',
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}
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}
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}
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}
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@@ -41,15 +41,6 @@ class cd_nagios::main::install (
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package {$reqpackages_client:
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ensure => $pkg_ensure,
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}
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# install NRPE if enabled
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if $ng_include_nrpe == true {
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package {$reqpackages_nrpe:
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ensure => $pkg_ensure,
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}
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}
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}
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# if we are not the nagios server, install client packages
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@@ -62,9 +53,7 @@ class cd_nagios::main::install (
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# if we want to use NRPE, install it
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if $ng_include_nrpe == true {
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package {$reqpackages_nrpe:
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ensure => $pkg_ensure,
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}
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require cd_nrpe
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}
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}
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}
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@@ -642,6 +642,8 @@
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# backoff_change - # of jobs to remove from jobs_limit when backing off
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# rampup_limit - Minimum rampup_change
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# rampup_change - # of jobs to add to jobs_limit when ramping up
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# @param [string] ng_nrpe_port the port for NRPE. used by firewall and in
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# configuration file.
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###############################################################################
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class cd_nagios::params (
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@@ -661,6 +663,7 @@ $ng_http_https_fw = true,
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$ng_fw_order = '50',
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$ng_http_port = '80',
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$ng_https_port = '443',
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$ng_nrpe_port = '5666',
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# check command parameters
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## ping
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@@ -907,9 +910,6 @@ $ng_loadctl_options = 'jobs_max=100;backoff_limit=10;rampup_change=5',
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'nagios-plugins-nrpe',
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'nagios-common']
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}
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$reqpackages_nrpe = $::operatingsystem ? {
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/(?i-mx:centos|fedora|redhat)/ => ['nrpe']
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}
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# service
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$ng_service = 'nagios'
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@@ -992,6 +992,9 @@ $ng_cntctgrps_rule_erb = 'cd_nagios/nagios/contactgroups_cfg_rule.erb'
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$ng_target_command = "${ng_conf_d_dir}/nagios_commands_base.cfg"
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$ng_nagios_service_cmd = 'check_nagios!/var/log/nagios/status.dat!5!/usr/sbin/nagios'
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# nrpe
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$ng_nrpe_file = "${ng_main_dir}/nrpe.cfg"
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# includes must be last
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include cd_nagios::main::config
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318
templates/nrpe/nrpe.cfg
Normal file
318
templates/nrpe/nrpe.cfg
Normal file
@@ -0,0 +1,318 @@
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#############################################################################
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# Sample NRPE Config File
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# Written by: Ethan Galstad (nagios@nagios.org)
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#
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# Last Modified: 2016-05-10
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#
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# NOTES:
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# This is a sample configuration file for the NRPE daemon. It needs to be
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# located on the remote host that is running the NRPE daemon, not the host
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# from which the check_nrpe client is being executed.
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#############################################################################
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# LOG FACILITY
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# The syslog facility that should be used for logging purposes.
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log_facility=daemon
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# LOG FILE
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# If a log file is specified in this option, nrpe will write to
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# that file instead of using syslog.
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#log_file=/var/run/nrpe.log
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# DEBUGGING OPTION
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# This option determines whether or not debugging messages are logged to the
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# syslog facility.
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# Values: 0=debugging off, 1=debugging on
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debug=0
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# PID FILE
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# The name of the file in which the NRPE daemon should write it's process ID
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# number. The file is only written if the NRPE daemon is started by the root
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# user and is running in standalone mode.
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pid_file=/var/run/nrpe/nrpe.pid
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# PORT NUMBER
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# Port number we should wait for connections on.
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# NOTE: This must be a non-privileged port (i.e. > 1024).
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# NOTE: This option is ignored if NRPE is running under either inetd or xinetd
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server_port=5666
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# SERVER ADDRESS
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# Address that nrpe should bind to in case there are more than one interface
|
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# and you do not want nrpe to bind on all interfaces.
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# NOTE: This option is ignored if NRPE is running under either inetd or xinetd
|
||||
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#server_address=127.0.0.1
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||||
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||||
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# LISTEN QUEUE SIZE
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# Listen queue size (backlog) for serving incoming connections.
|
||||
# You may want to increase this value under high load.
|
||||
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||||
#listen_queue_size=5
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||||
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||||
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||||
# NRPE USER
|
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# This determines the effective user that the NRPE daemon should run as.
|
||||
# You can either supply a username or a UID.
|
||||
#
|
||||
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd
|
||||
|
||||
nrpe_user=nrpe
|
||||
|
||||
|
||||
|
||||
# NRPE GROUP
|
||||
# This determines the effective group that the NRPE daemon should run as.
|
||||
# You can either supply a group name or a GID.
|
||||
#
|
||||
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd
|
||||
|
||||
nrpe_group=nrpe
|
||||
|
||||
|
||||
|
||||
# ALLOWED HOST ADDRESSES
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||||
# This is an optional comma-delimited list of IP address or hostnames
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||||
# that are allowed to talk to the NRPE daemon. Network addresses with a bit mask
|
||||
# (i.e. 192.168.1.0/24) are also supported. Hostname wildcards are not currently
|
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# supported.
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||||
#
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||||
# Note: The daemon only does rudimentary checking of the client's IP
|
||||
# address. I would highly recommend adding entries in your /etc/hosts.allow
|
||||
# file to allow only the specified host to connect to the port
|
||||
# you are running this daemon on.
|
||||
#
|
||||
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd
|
||||
|
||||
allowed_hosts=127.0.0.1,::1
|
||||
|
||||
|
||||
|
||||
# COMMAND ARGUMENT PROCESSING
|
||||
# This option determines whether or not the NRPE daemon will allow clients
|
||||
# to specify arguments to commands that are executed. This option only works
|
||||
# if the daemon was configured with the --enable-command-args configure script
|
||||
# option.
|
||||
#
|
||||
# *** ENABLING THIS OPTION IS A SECURITY RISK! ***
|
||||
# Read the SECURITY file for information on some of the security implications
|
||||
# of enabling this variable.
|
||||
#
|
||||
# Values: 0=do not allow arguments, 1=allow command arguments
|
||||
|
||||
dont_blame_nrpe=0
|
||||
|
||||
|
||||
|
||||
# BASH COMMAND SUBSTITUTION
|
||||
# This option determines whether or not the NRPE daemon will allow clients
|
||||
# to specify arguments that contain bash command substitutions of the form
|
||||
# $(...). This option only works if the daemon was configured with both
|
||||
# the --enable-command-args and --enable-bash-command-substitution configure
|
||||
# script options.
|
||||
#
|
||||
# *** ENABLING THIS OPTION IS A HIGH SECURITY RISK! ***
|
||||
# Read the SECURITY file for information on some of the security implications
|
||||
# of enabling this variable.
|
||||
#
|
||||
# Values: 0=do not allow bash command substitutions,
|
||||
# 1=allow bash command substitutions
|
||||
|
||||
allow_bash_command_substitution=0
|
||||
|
||||
|
||||
|
||||
# COMMAND PREFIX
|
||||
# This option allows you to prefix all commands with a user-defined string.
|
||||
# A space is automatically added between the specified prefix string and the
|
||||
# command line from the command definition.
|
||||
#
|
||||
# *** THIS EXAMPLE MAY POSE A POTENTIAL SECURITY RISK, SO USE WITH CAUTION! ***
|
||||
# Usage scenario:
|
||||
# Execute restricted commmands using sudo. For this to work, you need to add
|
||||
# the nagios user to your /etc/sudoers. An example entry for allowing
|
||||
# execution of the plugins from might be:
|
||||
#
|
||||
# nagios ALL=(ALL) NOPASSWD: /usr/lib/nagios/plugins/
|
||||
#
|
||||
# This lets the nagios user run all commands in that directory (and only them)
|
||||
# without asking for a password. If you do this, make sure you don't give
|
||||
# random users write access to that directory or its contents!
|
||||
|
||||
# command_prefix=/usr/bin/sudo
|
||||
|
||||
|
||||
|
||||
# COMMAND TIMEOUT
|
||||
# This specifies the maximum number of seconds that the NRPE daemon will
|
||||
# allow plugins to finish executing before killing them off.
|
||||
|
||||
command_timeout=60
|
||||
|
||||
|
||||
|
||||
# CONNECTION TIMEOUT
|
||||
# This specifies the maximum number of seconds that the NRPE daemon will
|
||||
# wait for a connection to be established before exiting. This is sometimes
|
||||
# seen where a network problem stops the SSL being established even though
|
||||
# all network sessions are connected. This causes the nrpe daemons to
|
||||
# accumulate, eating system resources. Do not set this too low.
|
||||
|
||||
connection_timeout=300
|
||||
|
||||
|
||||
|
||||
# WEAK RANDOM SEED OPTION
|
||||
# This directive allows you to use SSL even if your system does not have
|
||||
# a /dev/random or /dev/urandom (on purpose or because the necessary patches
|
||||
# were not applied). The random number generator will be seeded from a file
|
||||
# which is either a file pointed to by the environment valiable $RANDFILE
|
||||
# or $HOME/.rnd. If neither exists, the pseudo random number generator will
|
||||
# be initialized and a warning will be issued.
|
||||
# Values: 0=only seed from /dev/[u]random, 1=also seed from weak randomness
|
||||
|
||||
#allow_weak_random_seed=1
|
||||
|
||||
|
||||
|
||||
# SSL/TLS OPTIONS
|
||||
# These directives allow you to specify how to use SSL/TLS.
|
||||
|
||||
# SSL VERSION
|
||||
# This can be any of: SSLv2 (only use SSLv2), SSLv2+ (use any version),
|
||||
# SSLv3 (only use SSLv3), SSLv3+ (use SSLv3 or above), TLSv1 (only use
|
||||
# TLSv1), TLSv1+ (use TLSv1 or above), TLSv1.1 (only use TLSv1.1),
|
||||
# TLSv1.1+ (use TLSv1.1 or above), TLSv1.2 (only use TLSv1.2),
|
||||
# TLSv1.2+ (use TLSv1.2 or above)
|
||||
# If an "or above" version is used, the best will be negotiated. So if both
|
||||
# ends are able to do TLSv1.2 and use specify SSLv2, you will get TLSv1.2.
|
||||
# If you are using openssl 1.1.0 or above, the SSLv2 options are not available.
|
||||
|
||||
#ssl_version=SSLv2+
|
||||
|
||||
# SSL USE ADH
|
||||
# This is for backward compatibility and is DEPRECATED. Set to 1 to enable
|
||||
# ADH or 2 to require ADH. 1 is currently the default but will be changed
|
||||
# in a later version.
|
||||
|
||||
#ssl_use_adh=1
|
||||
|
||||
# SSL CIPHER LIST
|
||||
# This lists which ciphers can be used. For backward compatibility, this
|
||||
# defaults to 'ssl_cipher_list=ALL:!MD5:@STRENGTH' in this version but
|
||||
# will be changed to something like the example below in a later version of NRPE.
|
||||
|
||||
#ssl_cipher_list=ALL:!MD5:@STRENGTH
|
||||
#ssl_cipher_list=ALL:!aNULL:!eNULL:!SSLv2:!LOW:!EXP:!RC4:!MD5:@STRENGTH
|
||||
|
||||
# SSL Certificate and Private Key Files
|
||||
|
||||
#ssl_cacert_file=/etc/ssl/servercerts/ca-cert.pem
|
||||
#ssl_cert_file=/etc/ssl/servercerts/nagios-cert.pem
|
||||
#ssl_privatekey_file=/etc/ssl/servercerts/nagios-key.pem
|
||||
|
||||
# SSL USE CLIENT CERTS
|
||||
# This options determines client certificate usage.
|
||||
# Values: 0 = Don't ask for or require client certificates (default)
|
||||
# 1 = Ask for client certificates
|
||||
# 2 = Require client certificates
|
||||
|
||||
#ssl_client_certs=0
|
||||
|
||||
# SSL LOGGING
|
||||
# This option determines which SSL messages are send to syslog. OR values
|
||||
# together to specify multiple options.
|
||||
|
||||
# Values: 0x00 (0) = No additional logging (default)
|
||||
# 0x01 (1) = Log startup SSL/TLS parameters
|
||||
# 0x02 (2) = Log remote IP address
|
||||
# 0x04 (4) = Log SSL/TLS version of connections
|
||||
# 0x08 (8) = Log which cipher is being used for the connection
|
||||
# 0x10 (16) = Log if client has a certificate
|
||||
# 0x20 (32) = Log details of client's certificate if it has one
|
||||
# -1 or 0xff or 0x2f = All of the above
|
||||
|
||||
#ssl_logging=0x00
|
||||
|
||||
|
||||
|
||||
# NASTY METACHARACTERS
|
||||
# This option allows you to override the list of characters that cannot
|
||||
# be passed to the NRPE daemon.
|
||||
|
||||
# nasty_metachars="|`&><'\\[]{};\r\n"
|
||||
|
||||
|
||||
# INCLUDE CONFIG FILE
|
||||
# This directive allows you to include definitions from an external config file.
|
||||
|
||||
#include=<somefile.cfg>
|
||||
|
||||
|
||||
|
||||
# INCLUDE CONFIG DIRECTORY
|
||||
# This directive allows you to include definitions from config files (with a
|
||||
# .cfg extension) in one or more directories (with recursion).
|
||||
|
||||
include_dir=/etc/nrpe.d/
|
||||
|
||||
|
||||
|
||||
# COMMAND DEFINITIONS
|
||||
# Command definitions that this daemon will run. Definitions
|
||||
# are in the following format:
|
||||
#
|
||||
# command[<command_name>]=<command_line>
|
||||
#
|
||||
# When the daemon receives a request to return the results of <command_name>
|
||||
# it will execute the command specified by the <command_line> argument.
|
||||
#
|
||||
# Unlike Nagios, the command line cannot contain macros - it must be
|
||||
# typed exactly as it should be executed.
|
||||
#
|
||||
# Note: Any plugins that are used in the command lines must reside
|
||||
# on the machine that this daemon is running on! The examples below
|
||||
# assume that you have plugins installed in a /usr/local/nagios/libexec
|
||||
# directory. Also note that you will have to modify the definitions below
|
||||
# to match the argument format the plugins expect. Remember, these are
|
||||
# examples only!
|
||||
|
||||
|
||||
# The following examples use hardcoded command arguments...
|
||||
|
||||
command[check_users]=/usr/lib64/nagios/plugins/check_users -w 5 -c 10
|
||||
command[check_load]=/usr/lib64/nagios/plugins/check_load -r -w .15,.10,.05 -c .30,.25,.20
|
||||
command[check_hda1]=/usr/lib64/nagios/plugins/check_disk -w 20% -c 10% -p /dev/hda1
|
||||
command[check_zombie_procs]=/usr/lib64/nagios/plugins/check_procs -w 5 -c 10 -s Z
|
||||
command[check_total_procs]=/usr/lib64/nagios/plugins/check_procs -w 150 -c 200
|
||||
|
||||
|
||||
# The following examples allow user-supplied arguments and can
|
||||
# only be used if the NRPE daemon was compiled with support for
|
||||
# command arguments *AND* the dont_blame_nrpe directive in this
|
||||
# config file is set to '1'. This poses a potential security risk, so
|
||||
# make sure you read the SECURITY file before doing this.
|
||||
|
||||
#command[check_users]=/usr/lib64/nagios/plugins/check_users -w $ARG1$ -c $ARG2$
|
||||
#command[check_load]=/usr/lib64/nagios/plugins/check_load -w $ARG1$ -c $ARG2$
|
||||
#command[check_disk]=/usr/lib64/nagios/plugins/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$
|
||||
#command[check_procs]=/usr/lib64/nagios/plugins/check_procs -w $ARG1$ -c $ARG2$ -s $ARG3$
|
||||
Reference in New Issue
Block a user