2658ab8add
DHCP relay MONitor (dhcpmon) keeps track of DORA messages. If DHCP Relay is detected to be not forwarding DORA message, dhcpmon will log such event to syslog. Under the hood dhcpmon keeps counts of clients DR messages, forwarded DR messages, DHCP server OA messages, and forwarded OA messages. dhcpmon will check every 12 sec (configurable) if counts are monotonically increasing and record snapshot of those counters. dhcpmon will report discrepancies when detected between current counters and snapshot counters. pull-request: https://github.com/Azure/sonic-buildimage/pull/3886 signed-off-by: Tamer Ahmed <tamer.ahmed@microsoft.com>
138 lines
4.1 KiB
Django/Jinja
138 lines
4.1 KiB
Django/Jinja
[supervisord]
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logfile_maxbytes=1MB
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logfile_backups=2
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nodaemon=true
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[eventlistener:supervisor-proc-exit-listener]
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command=/usr/bin/supervisor-proc-exit-listener
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events=PROCESS_STATE_EXITED
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autostart=true
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autorestart=unexpected
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[program:start.sh]
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command=/usr/bin/start.sh
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priority=1
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autostart=true
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autorestart=false
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stdout_logfile=syslog
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stderr_logfile=syslog
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[program:rsyslogd]
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command=/usr/sbin/rsyslogd -n
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priority=2
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autostart=false
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autorestart=false
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stdout_logfile=syslog
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stderr_logfile=syslog
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{# If our configuration has VLANs... #}
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{% if VLAN %}
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{# Count how many VLANs require a DHCP relay agent... #}
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{% set num_relays = { 'count': 0 } %}
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{% for vlan_name in VLAN %}
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{% if VLAN[vlan_name]['dhcp_servers'] %}
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{% set _dummy = num_relays.update({'count': num_relays.count + 1}) %}
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{% endif %}
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{% endfor %}
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{# If one or more of the VLANs require a DHCP relay agent... #}
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{% if num_relays.count > 0 %}
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[group:isc-dhcp-relay]
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programs=
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{%- set add_preceding_comma = { 'flag': False } %}
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{% for vlan_name in VLAN %}
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{% if VLAN[vlan_name]['dhcp_servers'] %}
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{% if add_preceding_comma.flag %},{% endif %}
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{% set _dummy = add_preceding_comma.update({'flag': True}) %}
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isc-dhcp-relay-{{ vlan_name }}
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{%- endif %}
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{% endfor %}
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{# Create a program entry for each DHCP relay agent instance #}
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{% set relay_for_ipv4 = { 'flag': False } %}
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{% for vlan_name in VLAN %}
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{% if VLAN[vlan_name]['dhcp_servers'] %}
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{% for dhcp_server in VLAN[vlan_name]['dhcp_servers'] %}
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{% if dhcp_server | ipv4 %}
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{% set _dummy = relay_for_ipv4.update({'flag': True}) %}
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{% endif %}
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{% endfor %}
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{% if relay_for_ipv4.flag %}
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{% set _dummy = relay_for_ipv4.update({'flag': False}) %}
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[program:isc-dhcp-relay-{{ vlan_name }}]
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{# We treat this VLAN as a downstream interface (-id), as we only want to listen for requests #}
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command=/usr/sbin/dhcrelay -d -m discard -a %%h:%%p %%P --name-alias-map-file /tmp/port-name-alias-map.txt -id {{ vlan_name }}
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{#- We treat all other interfaces as upstream interfaces (-iu), as we only want to listen for replies #}
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{% for (name, prefix) in VLAN_INTERFACE|pfx_filter %}
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{% if prefix | ipv4 and name != vlan_name %} -iu {{ name }}{% endif -%}
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{% endfor %}
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{% for (name, prefix) in INTERFACE|pfx_filter %}
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{% if prefix | ipv4 %} -iu {{ name }}{% endif -%}
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{% endfor %}
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{% for (name, prefix) in PORTCHANNEL_INTERFACE|pfx_filter %}
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{% if prefix | ipv4 %} -iu {{ name }}{% endif -%}
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{% endfor %}
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{% for dhcp_server in VLAN[vlan_name]['dhcp_servers'] %}
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{%- if dhcp_server | ipv4 %} {{ dhcp_server }}{% endif -%}
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{% endfor %}
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priority=3
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autostart=false
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autorestart=false
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stdout_logfile=syslog
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stderr_logfile=syslog
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{% endif %}
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{% endif %}
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{% endfor %}
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[group:dhcpmon]
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programs=
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{%- set add_preceding_comma = { 'flag': False } %}
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{% for vlan_name in VLAN %}
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{% if VLAN[vlan_name]['dhcp_servers'] %}
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{% if add_preceding_comma.flag %},{% endif %}
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{% set _dummy = add_preceding_comma.update({'flag': True}) %}
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dhcpmon-{{ vlan_name }}
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{%- endif %}
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{% endfor %}
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{# Create a program entry for each DHCP MONitor instance #}
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{% set relay_for_ipv4 = { 'flag': False } %}
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{% for vlan_name in VLAN %}
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{% if VLAN[vlan_name]['dhcp_servers'] %}
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{% for dhcp_server in VLAN[vlan_name]['dhcp_servers'] %}
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{% if dhcp_server | ipv4 %}
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{% set _dummy = relay_for_ipv4.update({'flag': True}) %}
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{% endif %}
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{% endfor %}
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{% if relay_for_ipv4.flag %}
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{% set _dummy = relay_for_ipv4.update({'flag': False}) %}
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[program:dhcpmon-{{ vlan_name }}]
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{# We treat this VLAN as a downstream interface (-id), as we only want to listen for requests #}
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command=/usr/sbin/dhcpmon -id {{ vlan_name }}
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{#- We treat all other interfaces as upstream interfaces (-iu), as we only want to listen for replies #}
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{% for (name, prefix) in VLAN_INTERFACE|pfx_filter %}
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{% if prefix | ipv4 and name != vlan_name %} -iu {{ name }}{% endif -%}
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{% endfor %}
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{% for (name, prefix) in INTERFACE|pfx_filter %}
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{% if prefix | ipv4 %} -iu {{ name }}{% endif -%}
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{% endfor %}
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{% for (name, prefix) in PORTCHANNEL_INTERFACE|pfx_filter %}
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{% if prefix | ipv4 %} -iu {{ name }}{% endif -%}
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{% endfor %}
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priority=4
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autostart=false
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autorestart=false
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stdout_logfile=syslog
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stderr_logfile=syslog
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{% endif %}
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{% endif %}
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{% endfor %}
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{% endif %}
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{% endif %}
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