sonic-buildimage/dockers/docker-snmp/snmpd.conf.j2

###############################################################################
# Managed by sonic-config-engine
###############################################################################
#
# EXAMPLE.conf:
#   An example configuration file for configuring the Net-SNMP agent ('snmpd')
#   See the 'snmpd.conf(5)' man page for details
#
#  Some entries are deliberately commented out, and will need to be explicitly activated
#
###############################################################################
#
#  AGENT BEHAVIOUR
#

# Listen for connections on all ip addresses, including eth0, ipv4 lo for multi-asic platform
# Listen on managment and loopback0 ips for single asic platform
#
{% macro protocol(ip_addr) %}
{%- if ip_addr|ipv6 -%}
{{ 'udp6' }}
{%- else -%}
{{ 'udp' }}
{%- endif -%}
{% endmacro %}

{% if SNMP_AGENT_ADDRESS_CONFIG %}
{% for (agentip, port, vrf) in SNMP_AGENT_ADDRESS_CONFIG %}
agentAddress {{ protocol(agentip) }}:[{{ agentip }}]{% if port %}:{{ port }}{% endif %}{% if vrf %}%{{ vrf }}{% endif %}{{ "" }}
{% endfor %}
{% elif NAMESPACE_COUNT is not defined or NAMESPACE_COUNT|int <= 1 %}
{% if MGMT_INTERFACE is defined %}
{% for intf, ip in MGMT_INTERFACE %}
{% set agentip = ip.split('/')[0]|lower %}
{% set zoneid = '' %}
# Use interface as zoneid for link local ipv6
{% if agentip.startswith('fe80') %}
{% set zoneid = '%' + intf %}
{% endif %}
agentAddress {{ protocol(agentip) }}:[{{ agentip }}{{ zoneid }}]:161
{% endfor %}
{% endif %}
{% if LOOPBACK_INTERFACE is defined %}
{% for lo in LOOPBACK_INTERFACE %}
{% if lo | length == 2 %}
{% set intf = lo[0] %}
{% set agentip = lo[1].split('/')[0]|lower %}
{% set zoneid = '' %}
# Use interface as zoneid for link local ipv6
{% if agentip.startswith('fe80') %}
{% set zoneid = '%' + intf %}
{% endif %}
agentAddress {{ protocol(agentip) }}:[{{ agentip }}{{ zoneid }}]:161
{% endif %}
{% endfor %}
{% endif %}
{% else %}
agentAddress udp:161
agentAddress udp6:161
{% endif %}

###############################################################################
#
#  ACCESS CONTROL
#

                                                 #  system + hrSystem groups only
view   systemonly  included   .1.3.6.1.2.1.1
view   systemonly  included   .1.3.6.1.2.1.25.1

                                                 #  Default access to basic system info


{% if SNMP_COMMUNITY is defined %}
{% for community in SNMP_COMMUNITY %}
{% if SNMP_COMMUNITY[community]['TYPE'] == 'RO' %}
rocommunity {{ community }}
rocommunity6 {{ community }}
{% endif %}
{% endfor %}
{% endif %}

{% if SNMP_COMMUNITY is defined %}
{% for community in SNMP_COMMUNITY %}
{% if SNMP_COMMUNITY[community]['TYPE'] == 'RW' %}
rwcommunity {{ community }}
rwcommunity6 {{ community }}
{% endif %}
{% endfor %}
{% endif %}

{% if SNMP_USER is defined %}
{% for user in SNMP_USER %}
{% if SNMP_USER[user]['SNMP_USER_PERMISSION'] == 'RO' %}
rouser {{ user }} {{ SNMP_USER[user]['SNMP_USER_TYPE'] }}
CreateUser {{ user }} {{ SNMP_USER[user]['SNMP_USER_AUTH_TYPE'] }} {{ SNMP_USER[user]['SNMP_USER_AUTH_PASSWORD'] }} {{ SNMP_USER[user]['SNMP_USER_ENCRYPTION_TYPE'] }} {{ SNMP_USER[user]['SNMP_USER_ENCRYPTION_PASSWORD'] }}
{% elif SNMP_USER[user]['SNMP_USER_PERMISSION'] == 'RW' %}
rwuser {{ user }} {{ SNMP_USER[user]['SNMP_USER_TYPE'] }}
CreateUser {{ user }} {{ SNMP_USER[user]['SNMP_USER_AUTH_TYPE'] }} {{ SNMP_USER[user]['SNMP_USER_AUTH_PASSWORD'] }} {{ SNMP_USER[user]['SNMP_USER_ENCRYPTION_TYPE'] }} {{ SNMP_USER[user]['SNMP_USER_ENCRYPTION_PASSWORD'] }}
{% endif %}
{% endfor %}
{% else %}
{% endif %}


###############################################################################
#
#  SYSTEM INFORMATION
#

#  Note that setting these values here, results in the corresponding MIB objects being 'read-only'
#  See snmpd.conf(5) for more details

{% if SNMP is defined and SNMP.LOCATION is defined %}
sysLocation    {{ SNMP.LOCATION.Location }}
{% else %}
sysLocation    public
{% endif %}
{% if SNMP is defined and SNMP.CONTACT is defined %}
sysContact     {{ SNMP.CONTACT.keys() | first }} {{ SNMP.CONTACT.values() | first }}
{% else %}
sysContact     Azure Cloud Switch vteam <linuxnetdev@microsoft.com>
{% endif %}

                                                 # Application + End-to-End layers
sysServices    72


#
#  Process Monitoring
#
# todo: should we enable snmp based monitoring of sswsyncd and other processes?

# At least one 'sendmail' process, but no more than 10
#proc  sendmail 10 1

#  Walk the UCD-SNMP-MIB::prTable to see the resulting output
#  Note that this table will be empty if there are no "proc" entries in the snmpd.conf file


#
#  Disk Monitoring
#
                               # 10MBs required on root disk, 5% free on /var, 10% free on all other disks
disk       /     10000
disk       /var  5%
includeAllDisks  10%

#  Walk the UCD-SNMP-MIB::dskTable to see the resulting output
#  Note that this table will be empty if there are no "disk" entries in the snmpd.conf file


#
#  System Load
#
                               # Unacceptable 1-, 5-, and 15-minute load averages
load   12 10 5

#  Walk the UCD-SNMP-MIB::laTable to see the resulting output
#  Note that this table *will* be populated, even without a "load" entry in the snmpd.conf file



###############################################################################
#
#  ACTIVE MONITORING
#
# Note: disabled snmp traps due to side effect of causing snmpd to listen on all ports (0.0.0.0)
#
#   send SNMPv1  traps
{% if SNMP_TRAP_CONFIG and SNMP_TRAP_CONFIG['v1TrapDest'] %}
{% set v1SnmpTrapIp = SNMP_TRAP_CONFIG['v1TrapDest']['DestIp'] %}
{% set v1SnmpTrapPort = SNMP_TRAP_CONFIG['v1TrapDest']['DestPort'] %}
{% set v1SnmpTrapVrf = SNMP_TRAP_CONFIG['v1TrapDest']['vrf'] %}
{% set v1SnmpTrapComm = SNMP_TRAP_CONFIG['v1TrapDest']['Community'] %}
trapsink {{ v1SnmpTrapIp }}:{{ v1SnmpTrapPort }}{% if v1SnmpTrapVrf != 'None' %}%{{ v1SnmpTrapVrf }}{% endif %} {{ v1SnmpTrapComm }}{{ "" }}
{% else %}
#trapsink     localhost public
{% endif %}
#   send SNMPv2c traps
{% if SNMP_TRAP_CONFIG and SNMP_TRAP_CONFIG['v2TrapDest'] %}
{% set v2SnmpTrapIp = SNMP_TRAP_CONFIG['v2TrapDest']['DestIp'] %}
{% set v2SnmpTrapPort = SNMP_TRAP_CONFIG['v2TrapDest']['DestPort'] %}
{% set v2SnmpTrapVrf = SNMP_TRAP_CONFIG['v2TrapDest']['vrf'] %}
{% set v2SnmpTrapComm = SNMP_TRAP_CONFIG['v2TrapDest']['Community'] %}
trap2sink {{ v2SnmpTrapIp }}:{{ v2SnmpTrapPort }}{% if v2SnmpTrapVrf != 'None' %}%{{ v2SnmpTrapVrf }}{% endif %} {{ v2SnmpTrapComm }}{{ "" }}
{% else %}
#trap2sink    localhost public
{% endif %}
#   send SNMPv2c INFORMs
{% if SNMP_TRAP_CONFIG and SNMP_TRAP_CONFIG['v3TrapDest'] %}
{% set v3SnmpTrapIp = SNMP_TRAP_CONFIG['v3TrapDest']['DestIp'] %}
{% set v3SnmpTrapPort = SNMP_TRAP_CONFIG['v3TrapDest']['DestPort'] %}
{% set v3SnmpTrapVrf = SNMP_TRAP_CONFIG['v3TrapDest']['vrf'] %}
{% set v3SnmpTrapComm = SNMP_TRAP_CONFIG['v3TrapDest']['Community'] %}
trapsink {{ v3SnmpTrapIp }}:{{ v3SnmpTrapPort }}{% if v3SnmpTrapVrf != 'None' %}%{{ v3SnmpTrapVrf }}{% endif %} {{ v3SnmpTrapComm }}{{ "" }}
{% else %}
#informsink   localhost public
{% endif %}

#  Note that you typically only want *one* of these three lines
#  Uncommenting two (or all three) will result in multiple copies of each notification.


#
#  Event MIB - automatically generate alerts
#
# Remember to activate the 'createUser' lines above
#iquerySecName   internalUser
#rouser          internalUser
# generate traps on UCD error conditions
#defaultMonitors          yes
#note, this release of snmpd does not support linkUpDownNotifications
# generate traps on linkUp/Down
#linkUpDownNotifications  yes


#
#  AgentX Sub-agents
#
                                           #  Run as an AgentX master agent
master          agentx
# internal socket to allow extension to other docker containers
# Currently the other container using this is docker-fpm-frr
# make sure this line matches bgp:/etc/snmp/frr.conf 
# please see testing procedure in the same file to verify this works
# to verify the SNMP docker side look for the following string in the log file:
# INFO snmp-subagent [ax_interface] INFO: Using agentx socket type tcp with path tcp:localhost:3161
# INFO supervisord snmp-subagent INFO:ax_interface:Using agentx socket type tcp with path tcp:localhost:3161
agentxsocket    tcp:localhost:3161

#
#  SysDescription pass-through
#

pass -p 10 .1.3.6.1.2.1.1.1 /usr/share/snmp/sysDescr_pass.py