dhcp: add dhcp scope stats

[jkroepke]

Signed-off-by: Jan-Otto Kröpke [email protected]

What this PR does / why we need it

Provide more detailed DHCP scope stats.

# HELP windows_dhcp_acks_total Total DHCP Acks sent by the DHCP server (AcksTotal)
# TYPE windows_dhcp_acks_total counter
windows_dhcp_acks_total 0
# HELP windows_dhcp_active_queue_length Number of packets in the processing queue of the DHCP server (ActiveQueueLength)
# TYPE windows_dhcp_active_queue_length gauge
windows_dhcp_active_queue_length 0
# HELP windows_dhcp_conflict_check_queue_length Number of packets in the DHCP server queue waiting on conflict detection (ping). (ConflictCheckQueueLength)
# TYPE windows_dhcp_conflict_check_queue_length gauge
windows_dhcp_conflict_check_queue_length 0
# HELP windows_dhcp_declines_total Total DHCP Declines received by the DHCP server (DeclinesTotal)
# TYPE windows_dhcp_declines_total counter
windows_dhcp_declines_total 0
# HELP windows_dhcp_denied_due_to_match_total Total number of DHCP requests denied, based on matches from the Deny list (DeniedDueToMatch)
# TYPE windows_dhcp_denied_due_to_match_total counter
windows_dhcp_denied_due_to_match_total 0
# HELP windows_dhcp_denied_due_to_nonmatch_total Total number of DHCP requests denied, based on non-matches from the Allow list (DeniedDueToNonMatch)
# TYPE windows_dhcp_denied_due_to_nonmatch_total counter
windows_dhcp_denied_due_to_nonmatch_total 0
# HELP windows_dhcp_discovers_total Total DHCP Discovers received by the DHCP server (DiscoversTotal)
# TYPE windows_dhcp_discovers_total counter
windows_dhcp_discovers_total 0
# HELP windows_dhcp_duplicates_dropped_total Total number of duplicate packets received by the DHCP server (DuplicatesDroppedTotal)
# TYPE windows_dhcp_duplicates_dropped_total counter
windows_dhcp_duplicates_dropped_total 0
# HELP windows_dhcp_failover_bndack_received_total Number of DHCP fail over Binding Ack messages received (FailoverBndackReceivedTotal)
# TYPE windows_dhcp_failover_bndack_received_total counter
windows_dhcp_failover_bndack_received_total 0
# HELP windows_dhcp_failover_bndack_sent_total Number of DHCP fail over Binding Ack messages sent (FailoverBndackSentTotal)
# TYPE windows_dhcp_failover_bndack_sent_total counter
windows_dhcp_failover_bndack_sent_total 0
# HELP windows_dhcp_failover_bndupd_dropped_total Total number of DHCP fail over Binding Updates dropped (FailoverBndupdDropped)
# TYPE windows_dhcp_failover_bndupd_dropped_total counter
windows_dhcp_failover_bndupd_dropped_total 0
# HELP windows_dhcp_failover_bndupd_pending_in_outbound_queue Number of pending outbound DHCP fail over Binding Update messages (FailoverBndupdPendingOutboundQueue)
# TYPE windows_dhcp_failover_bndupd_pending_in_outbound_queue gauge
windows_dhcp_failover_bndupd_pending_in_outbound_queue 0
# HELP windows_dhcp_failover_bndupd_received_total Number of DHCP fail over Binding Update messages received (FailoverBndupdReceivedTotal)
# TYPE windows_dhcp_failover_bndupd_received_total counter
windows_dhcp_failover_bndupd_received_total 0
# HELP windows_dhcp_failover_bndupd_sent_total Number of DHCP fail over Binding Update messages sent (FailoverBndupdSentTotal)
# TYPE windows_dhcp_failover_bndupd_sent_total counter
windows_dhcp_failover_bndupd_sent_total 0
# HELP windows_dhcp_failover_transitions_communicationinterrupted_state_total Total number of transitions into COMMUNICATION INTERRUPTED state (FailoverTransitionsCommunicationinterruptedState)
# TYPE windows_dhcp_failover_transitions_communicationinterrupted_state_total counter
windows_dhcp_failover_transitions_communicationinterrupted_state_total 0
# HELP windows_dhcp_failover_transitions_partnerdown_state_total Total number of transitions into PARTNER DOWN state (FailoverTransitionsPartnerdownState)
# TYPE windows_dhcp_failover_transitions_partnerdown_state_total counter
windows_dhcp_failover_transitions_partnerdown_state_total 0
# HELP windows_dhcp_failover_transitions_recover_total Total number of transitions into RECOVER state (FailoverTransitionsRecoverState)
# TYPE windows_dhcp_failover_transitions_recover_total counter
windows_dhcp_failover_transitions_recover_total 0
# HELP windows_dhcp_informs_total Total DHCP Informs received by the DHCP server (InformsTotal)
# TYPE windows_dhcp_informs_total counter
windows_dhcp_informs_total 0
# HELP windows_dhcp_nacks_total Total DHCP Nacks sent by the DHCP server (NacksTotal)
# TYPE windows_dhcp_nacks_total counter
windows_dhcp_nacks_total 0
# HELP windows_dhcp_offer_queue_length Number of packets in the offer queue of the DHCP server (OfferQueueLength)
# TYPE windows_dhcp_offer_queue_length gauge
windows_dhcp_offer_queue_length 0
# HELP windows_dhcp_offers_total Total DHCP Offers sent by the DHCP server (OffersTotal)
# TYPE windows_dhcp_offers_total counter
windows_dhcp_offers_total 0
# HELP windows_dhcp_packets_expired_total Total number of packets expired in the DHCP server message queue (PacketsExpiredTotal)
# TYPE windows_dhcp_packets_expired_total counter
windows_dhcp_packets_expired_total 0
# HELP windows_dhcp_packets_received_total Total number of packets received by the DHCP server (PacketsReceivedTotal)
# TYPE windows_dhcp_packets_received_total counter
windows_dhcp_packets_received_total 0
# HELP windows_dhcp_releases_total Total DHCP Releases received by the DHCP server (ReleasesTotal)
# TYPE windows_dhcp_releases_total counter
windows_dhcp_releases_total 0
# HELP windows_dhcp_requests_total Total DHCP Requests received by the DHCP server (RequestsTotal)
# TYPE windows_dhcp_requests_total counter
windows_dhcp_requests_total 0
# HELP windows_dhcp_scope_addresses_free_total DHCP Scope free addresses
# TYPE windows_dhcp_scope_addresses_free_total gauge
windows_dhcp_scope_addresses_free_total{scope="10.11.12.0/25"} 0
windows_dhcp_scope_addresses_free_total{scope="172.16.0.0/24"} 0
windows_dhcp_scope_addresses_free_total{scope="192.168.0.0/24"} 231
# HELP windows_dhcp_scope_addresses_in_use_total DHCP Scope addresses in use
# TYPE windows_dhcp_scope_addresses_in_use_total gauge
windows_dhcp_scope_addresses_in_use_total{scope="10.11.12.0/25"} 0
windows_dhcp_scope_addresses_in_use_total{scope="172.16.0.0/24"} 0
windows_dhcp_scope_addresses_in_use_total{scope="192.168.0.0/24"} 0
# HELP windows_dhcp_scope_info DHCP Scope information
# TYPE windows_dhcp_scope_info gauge
windows_dhcp_scope_info{name="SUBSUPERSCOPE",scope="172.16.0.0/24",superscope_id="2",superscope_name="SUPERSCOPE"} 1
windows_dhcp_scope_info{name="TEST",scope="192.168.0.0/24",superscope_id="0",superscope_name=""} 1
windows_dhcp_scope_info{name="TEST2",scope="10.11.12.0/25",superscope_id="2",superscope_name="SUPERSCOPE"} 1
# HELP windows_dhcp_scope_pending_offers_total DHCP Scope pending offers
# TYPE windows_dhcp_scope_pending_offers_total gauge
windows_dhcp_scope_pending_offers_total{scope="10.11.12.0/25"} 0
windows_dhcp_scope_pending_offers_total{scope="172.16.0.0/24"} 0
windows_dhcp_scope_pending_offers_total{scope="192.168.0.0/24"} 0
# HELP windows_dhcp_scope_reserved_address_total DHCP Scope reserved addresses
# TYPE windows_dhcp_scope_reserved_address_total gauge
windows_dhcp_scope_reserved_address_total{scope="10.11.12.0/25"} 0
windows_dhcp_scope_reserved_address_total{scope="172.16.0.0/24"} 0
windows_dhcp_scope_reserved_address_total{scope="192.168.0.0/24"} 2
# HELP windows_dhcp_scope_state DHCP Scope state
# TYPE windows_dhcp_scope_state gauge
windows_dhcp_scope_state{scope="10.11.12.0/25",state="Disabled"} 1
windows_dhcp_scope_state{scope="10.11.12.0/25",state="DisabledSwitched"} 0
windows_dhcp_scope_state{scope="10.11.12.0/25",state="Enabled"} 0
windows_dhcp_scope_state{scope="10.11.12.0/25",state="EnabledSwitched"} 0
windows_dhcp_scope_state{scope="10.11.12.0/25",state="InvalidState"} 0
windows_dhcp_scope_state{scope="172.16.0.0/24",state="Disabled"} 1
windows_dhcp_scope_state{scope="172.16.0.0/24",state="DisabledSwitched"} 0
windows_dhcp_scope_state{scope="172.16.0.0/24",state="Enabled"} 0
windows_dhcp_scope_state{scope="172.16.0.0/24",state="EnabledSwitched"} 0
windows_dhcp_scope_state{scope="172.16.0.0/24",state="InvalidState"} 0
windows_dhcp_scope_state{scope="192.168.0.0/24",state="Disabled"} 0
windows_dhcp_scope_state{scope="192.168.0.0/24",state="DisabledSwitched"} 0
windows_dhcp_scope_state{scope="192.168.0.0/24",state="Enabled"} 1
windows_dhcp_scope_state{scope="192.168.0.0/24",state="EnabledSwitched"} 0
windows_dhcp_scope_state{scope="192.168.0.0/24",state="InvalidState"} 0

Which issue this PR fixes

• fixes DHCP include scope statistics #1836
• fixes DHCP Free DHCP IPs #880

Special notes for your reviewer

Particularly user-facing changes

Checklist

Complete these before marking the PR as ready to review:

• DCO signed
• The PR title has a summary of the changes and the area they affect
• The PR body has a summary to reflect any significant (and particularly user-facing) changes introduced by this PR