Monitoring DNS/DHCP Server health using the metrics services
Attention: The metrics services are only available on
DNS/DHCP Server v25.1.
By default, the metrics service is enabled and collects information related to
appliance, DNS, DHCPv4, DHCPv6, and notifications. You can navigate to the different
tabs within the Dashboards page to view additional information
about Address Manager health.
If you are using the metrics exporter service, you can monitor multiple metrics using
your observability platform. For more information on the statistics that are
available for export to an observability platform, refer to the following topics:
Monitoring DNS/DHCP Server health using
SNMP
Each BlueCat-specific BDDS MIB (management
information base) OID (object identifier) begins with the following prefix of
network management object
identifiers:
.1.3.6.1.4.1.13315
That represent
iso.org.dod.internet.private.enterprise.bluecatnetworks.
Note: The
following tables are not an exhaustive list of available SNMP MIBs. For more
information of all SNMP MIBs available in BDDS, refer to
DNS/DHCP Server polled objects .
When
monitoring BDDS using SNMP, BlueCat recommends polling the
following SNMP Objects to monitor the health of the
system.
BCN-DHCPV4-MIB.mib
| SNMP Object |
OID |
Description |
| .bcnDhcpv4SerOperState |
.3.1.1.2.1.1 |
Current running state of DHCPv4 service:
- 1—Running
- 2—Not Running
- 3—Starting
- 4—Stopping
- 5—Fault
|
| SNMP Object |
OID |
Description |
| .bcnDnsSerOperState |
.3.1.2.2.1.1 |
Current running state of DNS service:
- 1—Running
- 2—Not Running
- 3—Starting
- 4—Stopping
- 5—Fault
|
| .bcnDnsStatSrvQrySuccess |
.3.1.2.2.2.1.1 |
Queries resulting in a successful answer |
| .bcnDnsStatSrvQryFailure |
.3.1.2.2.2.1.6 |
Number of failed queries that did not result in non-existent
domains or records |
| SNMP Object |
OID |
Description |
| .bcnNtpSysclock |
.3.1.4.2.2.11 |
Current local time |
| SNMP Object |
OID |
Description |
| .bcnHaSerOperState |
.3.1.5.2.1.1 |
Current running state of xHA service:
- 1—Running
- 2—Not Running
- 3—Starting
- 4—Stopping
- 5—Fault
|
| SNMP Object |
OID |
Description |
| .bcnCommandServerSerOperState |
.3.1.7.2.1.1 |
Current running state of command server service:
- 1—Running
- 2—Not Running
- 3—Starting
- 4—Stopping
- 5—Fault
|
| SNMP Object |
OID |
Description |
| .bcnSysIdOSRelease |
.3.2.2.1.2 |
Current running BlueCat Networks OS release |
BlueCat also recommends monitoring BDDS for the
following SNMP traps:
| SNMP Object |
OID |
Description |
| .bcnDhcpv4AlarmNotif |
.3.1.1.3.0.1 |
Returns when the DHCPv4 service has transitioned state or a
particular event has been detected on the service. |
| .bcnDnsAlarmNotif |
.3.1.2.3.0.1 |
Returns when the DNS service has transitioned state or a
particular event has been detected on the service. |
| .bcnNtpAlarmNotif |
.3.1.4.3.0.1 |
Returns when the NTP service has transitioned state or a
particular event has been detected on the service. |
| .bcnHaAlarmNotif |
.3.1.5.3.0.1 |
Returns when the xHA service has transitioned state or a
particular event has been detected on the service. |
| .bcnCommandServerAlarmNotif |
.3.1.7.3.0.1 |
Returns when the Command Server service has transitioned state or
a particular event has been detected on the service. |
| .bcnSysAlarmNotif |
.3.2.3.0.1 |
Returns when the system starts, reboots, or shuts down |
Linux SNMP MIBs
You can also poll BDDS for the following Linux-specific SNMP
Objects for information on system load and usage.
UCD-SNMP-MIB.mib
| SNMP Object |
OID |
Description |
| .memAvailSwap |
.1.3.6.1.4.1.2021.4.4.0 |
Available swap size |
| .memTotalReal |
.1.3.6.1.4.1.2021.4.5.0 |
Total RAM in machine |
| .memAvailReal |
.1.3.6.1.4.1.2021.4.6.0 |
Total RAM used |
| .memTotalFree |
.1.3.6.1.4.1.2021.4.11.0 |
Total RAM free |
| .ssCpuUser |
.1.3.6.1.4.1.2021.11.9.0 |
Percentage of user CPU time |
| .ssCpuSystem |
.1.3.6.1.4.1.2021.11.10.0 |
Percentages of system CPU time |
| .ssCpuIdle |
.1.3.6.1.4.1.2021.11.11.0 |
Percentage of idle CPU time |