snmpd

Table of Contents

1. Overview
2. Module Description
3. Setup
   • What snmpd affects
   • Setup requirements
   • Beginning with snmpd
4. Usage
5. Reference
6. Limitations
7. Development
   • TODO
   • Contributing

Overview

SNMP agent management

Module Description

snmpd management: SNMP v1 and v2c ACL management and SNMPv3 user creation.

Support for:

• disk monitoring
• load average monitoring

Setup

What snmpd affects

• snmpd package
• snmpd service

Setup Requirements

Beginning with snmpd

Install snmpd:

class { 'snmpd': }

Usage

disable snmpd

class { 'snmpd':
  service_ensure => 'stopped',
  service_enable => false,
}

purge snmpd

class { 'snmpd':
  package_ensure => 'purged',
  manage_service => false,
}

SNMP v1 and v2c ACL

class { 'snmpd':
  add_default_acls => false,
}

snmpd::acl { 'demo':
  community => '1234567890',
}

SNMPv3 user creation

class { 'snmpd':
  add_default_acls => false,
}

snmpd::v3user { 'v3testuser':
  authpass => '1234567890',
  encpass  => '1234567890',
}

This setup can be tested vis snmpwalk:

# snmpwalk -v3  -l authPriv -u v3testuser -a SHA -A "1234567890"  -x AES -X "1234567890" 127.0.0.1 system

Reference

snmpd

• basic operations:
  • manage_package = true,
  • package_ensure = 'installed',
  • manage_service = true,
  • manage_docker_service = true,
  • service_ensure = 'running',
  • service_enable = true,

snmp::acl

snmpd::disk

Relies on fact ::eyp_snmpd_mountpoints for autoconfiguring disk monitoring if snmpd::add_disk_monit is set to true (default is true)

snmpd::v3user

It is asumed that /usr/bin/net-snmp-create-v3-user is a bash script that this module modifies for it's own purposes. The modified script is stored on /usr/local/bin/puppet_net-snmp-create-v3-user

Limitations

Mostly tested on CentOS 7 and Ubuntu 16.04

Development

We are pushing to have acceptance testing in place, so any new feature should have some test to check both presence and absence of any feature

TODO

TODO list

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

CHANGELOG

0.2.6

• Added snmpd::extend

0.2.5

• flag to ignore not prexistent users in autoACL mode

0.2.4

• add backup flag to snmpd.conf

0.2.3

• simplified auto ACL mode

0.2.2

• added auto ACL mode

0.2.1

• millora check snmpv3 user

0.2.0

• major rework
  • Added SNMPv3 support
  • Added ACL management for v1 and v2c
  • disk monitoring
  • load average monitoring

0.1.5

• added dont_log_tcp_wrappers_connects flag
• added support for:
  • Ubuntu 16.04
  • Ubuntu 18.04
  • RHEL 8

0.1.4

• improved deletion support

0.1.3

• added system snmp variables:
  • syscontact
  • syslocation

0.1.2

• added snmpd::allowed_hosts

0.1.1

• template file for snmpd

0.1.0

• initial release