SNMP meters

snmpd-user.yaml

heat_template_version: 2014-10-16

parameters:
  servers:
    type: json

  # Optional implementation specific parameters
  snmp_user:
    type: string
  snmp_pass:
    type: string

resources:

  ExtraConfig:
    type: OS::Heat::SoftwareConfig
    properties:
      group: script
      config:
        str_replace:
          template: |
            #!/bin/sh
            systemctl stop snmpd
            net-snmp-create-v3-user -ro -A _SNMPPASS_ -X _SNMPPASS_ -a MD5 _SNMPUSER_
            cat > /etc/snmp/snmpd.conf << EOF
            #  Listen for connections on all interfaces (both IPv4 *and* IPv6)
            agentAddress udp:161,udp6:[::1]:161
            createUser _SNMPUSER_  MD5 "_SNMPPASS_"
            view   systemonly  included   .1.3.6.1.2.1.1
            view   systemonly  included   .1.3.6.1.2.1.25.1
            rouser   _SNMPUSER_
            sysLocation    Sitting on top of the cloud
            sysContact     Me <me@example.org>
            
            sysServices    72
            
            #  Process Monitoring
            proc  cron
            
            #  Disk Monitoring
            # 10MBs required on root disk, 5% free on /var, 10% free on all other disks
            includeAllDisks  10%
            
            #  ACTIVE MONITORING
            #   send SNMPv1  traps
            trapsink        localhost public
            iquerySecName   internalUser
            rouser          internalUser
            # generate traps on UCD error conditions
            defaultMonitors          yes
            # generate traps on linkUp/Down
            linkUpDownNotifications  yes
            
            #  Arbitrary extension commands
            extend  OoOEnabled /bin/echo  Yes
            extend  CheckProcOpenFiles /bin/bash /usr/lib/nagios/plugins/check_proc_open_files.py
            
            #  "Pass-through" MIB extension command
            #pass .1.3.6.1.4.1.8072.2.255  /bin/sh       PREFIX/local/passtest
            #pass .1.3.6.1.4.1.8072.2.255  /usr/bin/perl PREFIX/local/passtest.pl
            
            #  AgentX Sub-agents
            #  Run as an AgentX master agent
            master          agentx
            EOF
            systemctl start snmpd
            
          params:
            _SNMPUSER_: {get_param: snmp_user}
            _SNMPPASS_: {get_param: snmp_pass}
 
  ExtraDeployments:
    type: OS::Heat::SoftwareDeployments
    properties:
      servers:  {get_param: servers}
      config: {get_resource: ExtraConfig}
      actions: ['CREATE', 'UPDATE'] # Only do this on CREATE

snmpd.yaml

resource_registry:
    OS::TripleO::NodeExtraConfigPost: my-overcloud/extraconfig/post_deploy/snmpd-user.yaml
parameter_defaults:
    snmp_user: ro_snmp_user
    snmp_pass: ro_snmp_user_pass